From d062f91193dbd5a0c1d8469c8517ec8dd552c3f2 Mon Sep 17 00:00:00 2001 From: Shuah Khan Date: Wed, 3 Jun 2015 12:12:53 -0300 Subject: [media] media: new media controller API for device resource support Add new media controller API to allocate media device as a device resource. When a media device is created on the main struct device which is the parent device for the interface device, it will be available to all drivers associated with that interface. For example, if a usb media device driver creates the media device on the main struct device which is common for all the drivers that control the media device, including the non-media ALSA driver, media controller API can be used to share access to the resources on the media device. This new interface provides the above described feature. A second interface that finds and returns the media device is added to allow drivers to find the media device created by any of the drivers associated with the device. Signed-off-by: Shuah Khan Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 33 +++++++++++++++++++++++++++++++++ include/media/media-device.h | 2 ++ 2 files changed, 35 insertions(+) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 7b39440192d61a..a4d5b2488c0513 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -462,3 +462,36 @@ void media_device_unregister_entity(struct media_entity *entity) entity->parent = NULL; } EXPORT_SYMBOL_GPL(media_device_unregister_entity); + +static void media_device_release_devres(struct device *dev, void *res) +{ +} + +/* + * media_device_get_devres() - get media device as device resource + * creates if one doesn't exist +*/ +struct media_device *media_device_get_devres(struct device *dev) +{ + struct media_device *mdev; + + mdev = devres_find(dev, media_device_release_devres, NULL, NULL); + if (mdev) + return mdev; + + mdev = devres_alloc(media_device_release_devres, + sizeof(struct media_device), GFP_KERNEL); + if (!mdev) + return NULL; + return devres_get(dev, mdev, NULL, NULL); +} +EXPORT_SYMBOL_GPL(media_device_get_devres); + +/* + * media_device_find_devres() - find media device as device resource +*/ +struct media_device *media_device_find_devres(struct device *dev) +{ + return devres_find(dev, media_device_release_devres, NULL, NULL); +} +EXPORT_SYMBOL_GPL(media_device_find_devres); diff --git a/include/media/media-device.h b/include/media/media-device.h index 6e6db78f1ee2d1..22792cd5b1d1aa 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -95,6 +95,8 @@ void media_device_unregister(struct media_device *mdev); int __must_check media_device_register_entity(struct media_device *mdev, struct media_entity *entity); void media_device_unregister_entity(struct media_entity *entity); +struct media_device *media_device_get_devres(struct device *dev); +struct media_device *media_device_find_devres(struct device *dev); /* Iterate over all entities. */ #define media_device_for_each_entity(entity, mdev) \ -- cgit 1.2.3-korg From e576d60bb21e7add884f052ff0e5c28ebf7b7461 Mon Sep 17 00:00:00 2001 From: Shuah Khan Date: Fri, 5 Jun 2015 17:11:54 -0300 Subject: [media] media: define Media Controller API when CONFIG_MEDIA_CONTROLLER enabled Change to define Media Controller API when CONFIG_MEDIA_CONTROLLER is enabled. Define stubs for CONFIG_MEDIA_CONTROLLER disabled case. This will help avoid drivers needing to enclose Media Controller code within ifdef CONFIG_MEDIA_CONTROLLER block. Signed-off-by: Shuah Khan Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 4 ++++ include/media/media-device.h | 27 +++++++++++++++++++++++++++ 2 files changed, 31 insertions(+) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index a4d5b2488c0513..c55ab5029323ac 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -30,6 +30,8 @@ #include #include +#ifdef CONFIG_MEDIA_CONTROLLER + /* ----------------------------------------------------------------------------- * Userspace API */ @@ -495,3 +497,5 @@ struct media_device *media_device_find_devres(struct device *dev) return devres_find(dev, media_device_release_devres, NULL, NULL); } EXPORT_SYMBOL_GPL(media_device_find_devres); + +#endif /* CONFIG_MEDIA_CONTROLLER */ diff --git a/include/media/media-device.h b/include/media/media-device.h index 22792cd5b1d1aa..a44f18fdf321d8 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -80,6 +80,8 @@ struct media_device { unsigned int notification); }; +#ifdef CONFIG_MEDIA_CONTROLLER + /* Supported link_notify @notification values. */ #define MEDIA_DEV_NOTIFY_PRE_LINK_CH 0 #define MEDIA_DEV_NOTIFY_POST_LINK_CH 1 @@ -102,4 +104,29 @@ struct media_device *media_device_find_devres(struct device *dev); #define media_device_for_each_entity(entity, mdev) \ list_for_each_entry(entity, &(mdev)->entities, list) +#else +static inline int media_device_register(struct media_device *mdev) +{ + return 0; +} +static inline void media_device_unregister(struct media_device *mdev) +{ +} +static inline int media_device_register_entity(struct media_device *mdev, + struct media_entity *entity) +{ + return 0; +} +static inline void media_device_unregister_entity(struct media_entity *entity) +{ +} +static inline struct media_device *media_device_get_devres(struct device *dev) +{ + return NULL; +} +static inline struct media_device *media_device_find_devres(struct device *dev) +{ + return NULL; +} +#endif /* CONFIG_MEDIA_CONTROLLER */ #endif -- cgit 1.2.3-korg From bed6919665072b1e5bad31a013d53798394e097c Mon Sep 17 00:00:00 2001 From: Rafael Lourenço de Lima Chehab Date: Mon, 8 Jun 2015 22:20:46 -0300 Subject: [media] au0828: Add support for media controller MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add support for analog and dvb tv using media controller. Signed-off-by: Rafael Lourenço de Lima Chehab Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/au8522_decoder.c | 17 +++++ drivers/media/dvb-frontends/au8522_priv.h | 12 ++++ drivers/media/usb/au0828/au0828-core.c | 98 ++++++++++++++++++++++++++++ drivers/media/usb/au0828/au0828-dvb.c | 10 +++ drivers/media/usb/au0828/au0828-video.c | 83 +++++++++++++++++++++++ drivers/media/usb/au0828/au0828.h | 6 ++ 6 files changed, 226 insertions(+) diff --git a/drivers/media/dvb-frontends/au8522_decoder.c b/drivers/media/dvb-frontends/au8522_decoder.c index c8f13d8370e507..0a8882cb23c38f 100644 --- a/drivers/media/dvb-frontends/au8522_decoder.c +++ b/drivers/media/dvb-frontends/au8522_decoder.c @@ -730,6 +730,9 @@ static int au8522_probe(struct i2c_client *client, struct v4l2_ctrl_handler *hdl; struct v4l2_subdev *sd; int instance; +#ifdef CONFIG_MEDIA_CONTROLLER + int ret; +#endif /* Check if the adapter supports the needed features */ if (!i2c_check_functionality(client->adapter, @@ -758,6 +761,20 @@ static int au8522_probe(struct i2c_client *client, sd = &state->sd; v4l2_i2c_subdev_init(sd, client, &au8522_ops); +#if defined(CONFIG_MEDIA_CONTROLLER) + + state->pads[AU8522_PAD_INPUT].flags = MEDIA_PAD_FL_SINK; + state->pads[AU8522_PAD_VID_OUT].flags = MEDIA_PAD_FL_SOURCE; + state->pads[AU8522_PAD_VBI_OUT].flags = MEDIA_PAD_FL_SOURCE; + sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_DECODER; + + ret = media_entity_init(&sd->entity, ARRAY_SIZE(state->pads), + state->pads, 0); + if (ret < 0) { + v4l_info(client, "failed to initialize media entity!\n"); + return ret; + } +#endif hdl = &state->hdl; v4l2_ctrl_handler_init(hdl, 4); diff --git a/drivers/media/dvb-frontends/au8522_priv.h b/drivers/media/dvb-frontends/au8522_priv.h index ee330c61aa613e..404a0cb0ed8d9b 100644 --- a/drivers/media/dvb-frontends/au8522_priv.h +++ b/drivers/media/dvb-frontends/au8522_priv.h @@ -39,6 +39,14 @@ #define AU8522_DIGITAL_MODE 1 #define AU8522_SUSPEND_MODE 2 +enum au8522_media_pads { + AU8522_PAD_INPUT, + AU8522_PAD_VID_OUT, + AU8522_PAD_VBI_OUT, + + AU8522_NUM_PADS +}; + struct au8522_state { struct i2c_client *c; struct i2c_adapter *i2c; @@ -68,6 +76,10 @@ struct au8522_state { u32 id; u32 rev; struct v4l2_ctrl_handler hdl; + +#ifdef CONFIG_MEDIA_CONTROLLER + struct media_pad pads[AU8522_NUM_PADS]; +#endif }; /* These are routines shared by both the VSB/QAM demodulator and the analog diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c index 0934024fb89d37..0378a2c99ebb4f 100644 --- a/drivers/media/usb/au0828/au0828-core.c +++ b/drivers/media/usb/au0828/au0828-core.c @@ -127,8 +127,22 @@ static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value, return status; } +static void au0828_unregister_media_device(struct au0828_dev *dev) +{ + +#ifdef CONFIG_MEDIA_CONTROLLER + if (dev->media_dev) { + media_device_unregister(dev->media_dev); + kfree(dev->media_dev); + dev->media_dev = NULL; + } +#endif +} + static void au0828_usb_release(struct au0828_dev *dev) { + au0828_unregister_media_device(dev); + /* I2C */ au0828_i2c_unregister(dev); @@ -161,6 +175,8 @@ static void au0828_usb_disconnect(struct usb_interface *interface) */ dev->dev_state = DEV_DISCONNECTED; + au0828_unregister_media_device(dev); + au0828_rc_unregister(dev); /* Digital TV */ au0828_dvb_unregister(dev); @@ -180,6 +196,81 @@ static void au0828_usb_disconnect(struct usb_interface *interface) au0828_usb_release(dev); } +static void au0828_media_device_register(struct au0828_dev *dev, + struct usb_device *udev) +{ +#ifdef CONFIG_MEDIA_CONTROLLER + struct media_device *mdev; + int ret; + + mdev = kzalloc(sizeof(*mdev), GFP_KERNEL); + if (!mdev) + return; + + mdev->dev = &udev->dev; + + if (!dev->board.name) + strlcpy(mdev->model, "unknown au0828", sizeof(mdev->model)); + else + strlcpy(mdev->model, dev->board.name, sizeof(mdev->model)); + if (udev->serial) + strlcpy(mdev->serial, udev->serial, sizeof(mdev->serial)); + strcpy(mdev->bus_info, udev->devpath); + mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice); + mdev->driver_version = LINUX_VERSION_CODE; + + ret = media_device_register(mdev); + if (ret) { + pr_err( + "Couldn't create a media device. Error: %d\n", + ret); + kfree(mdev); + return; + } + + dev->media_dev = mdev; +#endif +} + + +static void au0828_create_media_graph(struct au0828_dev *dev) +{ +#ifdef CONFIG_MEDIA_CONTROLLER + struct media_device *mdev = dev->media_dev; + struct media_entity *entity; + struct media_entity *tuner = NULL, *decoder = NULL; + + if (!mdev) + return; + + media_device_for_each_entity(entity, mdev) { + switch (entity->type) { + case MEDIA_ENT_T_V4L2_SUBDEV_TUNER: + tuner = entity; + break; + case MEDIA_ENT_T_V4L2_SUBDEV_DECODER: + decoder = entity; + break; + } + } + + /* Analog setup, using tuner as a link */ + + if (!decoder) + return; + + if (tuner) + media_entity_create_link(tuner, 0, decoder, 0, + MEDIA_LNK_FL_ENABLED); + if (dev->vdev.entity.links) + media_entity_create_link(decoder, 1, &dev->vdev.entity, 0, + MEDIA_LNK_FL_ENABLED); + if (dev->vbi_dev.entity.links) + media_entity_create_link(decoder, 2, &dev->vbi_dev.entity, 0, + MEDIA_LNK_FL_ENABLED); +#endif +} + static int au0828_usb_probe(struct usb_interface *interface, const struct usb_device_id *id) { @@ -224,11 +315,16 @@ static int au0828_usb_probe(struct usb_interface *interface, dev->boardnr = id->driver_info; dev->board = au0828_boards[dev->boardnr]; + /* Register the media controller */ + au0828_media_device_register(dev, usbdev); #ifdef CONFIG_VIDEO_AU0828_V4L2 dev->v4l2_dev.release = au0828_usb_v4l2_release; /* Create the v4l2_device */ +#ifdef CONFIG_MEDIA_CONTROLLER + dev->v4l2_dev.mdev = dev->media_dev; +#endif retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev); if (retval) { pr_err("%s() v4l2_device_register failed\n", @@ -287,6 +383,8 @@ static int au0828_usb_probe(struct usb_interface *interface, mutex_unlock(&dev->lock); + au0828_create_media_graph(dev); + return retval; } diff --git a/drivers/media/usb/au0828/au0828-dvb.c b/drivers/media/usb/au0828/au0828-dvb.c index c267d76f5b3c56..c01772c4f9f07e 100644 --- a/drivers/media/usb/au0828/au0828-dvb.c +++ b/drivers/media/usb/au0828/au0828-dvb.c @@ -415,6 +415,11 @@ static int dvb_register(struct au0828_dev *dev) result); goto fail_adapter; } + +#ifdef CONFIG_MEDIA_CONTROLLER_DVB + dvb->adapter.mdev = dev->media_dev; +#endif + dvb->adapter.priv = dev; /* register frontend */ @@ -480,6 +485,11 @@ static int dvb_register(struct au0828_dev *dev) dvb->start_count = 0; dvb->stop_count = 0; + +#ifdef CONFIG_MEDIA_CONTROLLER_DVB + dvb_create_media_graph(&dvb->adapter); +#endif + return 0; fail_fe_conn: diff --git a/drivers/media/usb/au0828/au0828-video.c b/drivers/media/usb/au0828/au0828-video.c index 0a725a161dd6c0..7aa7d509885bbb 100644 --- a/drivers/media/usb/au0828/au0828-video.c +++ b/drivers/media/usb/au0828/au0828-video.c @@ -638,6 +638,75 @@ static inline int au0828_isoc_copy(struct au0828_dev *dev, struct urb *urb) return rc; } +static int au0828_enable_analog_tuner(struct au0828_dev *dev) +{ +#ifdef CONFIG_MEDIA_CONTROLLER + struct media_device *mdev = dev->media_dev; + struct media_entity *entity, *decoder = NULL, *source; + struct media_link *link, *found_link = NULL; + int i, ret, active_links = 0; + + if (!mdev) + return 0; + + /* + * This will find the tuner that is connected into the decoder. + * Technically, this is not 100% correct, as the device may be + * using an analog input instead of the tuner. However, as we can't + * do DVB streaming while the DMA engine is being used for V4L2, + * this should be enough for the actual needs. + */ + media_device_for_each_entity(entity, mdev) { + if (entity->type == MEDIA_ENT_T_V4L2_SUBDEV_DECODER) { + decoder = entity; + break; + } + } + if (!decoder) + return 0; + + for (i = 0; i < decoder->num_links; i++) { + link = &decoder->links[i]; + if (link->sink->entity == decoder) { + found_link = link; + if (link->flags & MEDIA_LNK_FL_ENABLED) + active_links++; + break; + } + } + + if (active_links == 1 || !found_link) + return 0; + + source = found_link->source->entity; + for (i = 0; i < source->num_links; i++) { + struct media_entity *sink; + int flags = 0; + + link = &source->links[i]; + sink = link->sink->entity; + + if (sink == entity) + flags = MEDIA_LNK_FL_ENABLED; + + ret = media_entity_setup_link(link, flags); + if (ret) { + pr_err( + "Couldn't change link %s->%s to %s. Error %d\n", + source->name, sink->name, + flags ? "enabled" : "disabled", + ret); + return ret; + } else + au0828_isocdbg( + "link %s->%s was %s\n", + source->name, sink->name, + flags ? "ENABLED" : "disabled"); + } +#endif + return 0; +} + static int queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[]) @@ -650,6 +719,8 @@ static int queue_setup(struct vb2_queue *vq, *nplanes = 1; sizes[0] = size; + au0828_enable_analog_tuner(dev); + return 0; } @@ -1823,6 +1894,18 @@ int au0828_analog_register(struct au0828_dev *dev, dev->vbi_dev.queue->lock = &dev->vb_vbi_queue_lock; strcpy(dev->vbi_dev.name, "au0828a vbi"); +#if defined(CONFIG_MEDIA_CONTROLLER) + dev->video_pad.flags = MEDIA_PAD_FL_SINK; + ret = media_entity_init(&dev->vdev.entity, 1, &dev->video_pad, 0); + if (ret < 0) + pr_err("failed to initialize video media entity!\n"); + + dev->vbi_pad.flags = MEDIA_PAD_FL_SINK; + ret = media_entity_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad, 0); + if (ret < 0) + pr_err("failed to initialize vbi media entity!\n"); +#endif + /* initialize videobuf2 stuff */ retval = au0828_vb2_setup(dev); if (retval != 0) { diff --git a/drivers/media/usb/au0828/au0828.h b/drivers/media/usb/au0828/au0828.h index 60b59391ea2ae4..7d175d8b8a7afd 100644 --- a/drivers/media/usb/au0828/au0828.h +++ b/drivers/media/usb/au0828/au0828.h @@ -33,6 +33,7 @@ #include #include #include +#include /* DVB */ #include "demux.h" @@ -276,6 +277,11 @@ struct au0828_dev { /* Preallocated transfer digital transfer buffers */ char *dig_transfer_buffer[URB_COUNT]; + +#ifdef CONFIG_MEDIA_CONTROLLER + struct media_device *media_dev; + struct media_pad video_pad, vbi_pad; +#endif }; -- cgit 1.2.3-korg From 0158e7b6a29f33a2c91cf045468958fbe8cb0b4c Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 18 Jun 2015 13:06:38 -0300 Subject: [media] au0828: Cache the decoder info at au0828 dev structure Instead of seeking for the decoder every time analog stream is started, cache it. This simplifies the code a little bit. Requested-by: Hans Verkuil Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/au0828/au0828-cards.c | 4 ++++ drivers/media/usb/au0828/au0828-video.c | 19 +++++-------------- drivers/media/usb/au0828/au0828.h | 1 + 3 files changed, 10 insertions(+), 14 deletions(-) diff --git a/drivers/media/usb/au0828/au0828-cards.c b/drivers/media/usb/au0828/au0828-cards.c index 6b469e8c4c6e20..ca861aea68a573 100644 --- a/drivers/media/usb/au0828/au0828-cards.c +++ b/drivers/media/usb/au0828/au0828-cards.c @@ -228,6 +228,10 @@ void au0828_card_analog_fe_setup(struct au0828_dev *dev) "au8522", 0x8e >> 1, NULL); if (sd == NULL) pr_err("analog subdev registration failed\n"); +#ifdef CONFIG_MEDIA_CONTROLLER + if (sd) + dev->decoder = &sd->entity; +#endif } /* Setup tuners */ diff --git a/drivers/media/usb/au0828/au0828-video.c b/drivers/media/usb/au0828/au0828-video.c index 7aa7d509885bbb..0b6e97d4fd949e 100644 --- a/drivers/media/usb/au0828/au0828-video.c +++ b/drivers/media/usb/au0828/au0828-video.c @@ -642,11 +642,11 @@ static int au0828_enable_analog_tuner(struct au0828_dev *dev) { #ifdef CONFIG_MEDIA_CONTROLLER struct media_device *mdev = dev->media_dev; - struct media_entity *entity, *decoder = NULL, *source; + struct media_entity *entity, *source; struct media_link *link, *found_link = NULL; int i, ret, active_links = 0; - if (!mdev) + if (!mdev || !dev->decoder) return 0; /* @@ -656,18 +656,9 @@ static int au0828_enable_analog_tuner(struct au0828_dev *dev) * do DVB streaming while the DMA engine is being used for V4L2, * this should be enough for the actual needs. */ - media_device_for_each_entity(entity, mdev) { - if (entity->type == MEDIA_ENT_T_V4L2_SUBDEV_DECODER) { - decoder = entity; - break; - } - } - if (!decoder) - return 0; - - for (i = 0; i < decoder->num_links; i++) { - link = &decoder->links[i]; - if (link->sink->entity == decoder) { + for (i = 0; i < dev->decoder->num_links; i++) { + link = &dev->decoder->links[i]; + if (link->sink->entity == dev->decoder) { found_link = link; if (link->flags & MEDIA_LNK_FL_ENABLED) active_links++; diff --git a/drivers/media/usb/au0828/au0828.h b/drivers/media/usb/au0828/au0828.h index 7d175d8b8a7afd..3577b931157b4c 100644 --- a/drivers/media/usb/au0828/au0828.h +++ b/drivers/media/usb/au0828/au0828.h @@ -281,6 +281,7 @@ struct au0828_dev { #ifdef CONFIG_MEDIA_CONTROLLER struct media_device *media_dev; struct media_pad video_pad, vbi_pad; + struct media_entity *decoder; #endif }; -- cgit 1.2.3-korg From 1809510715c4187fa7338204cac53e30326d5d04 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 6 Aug 2015 09:25:57 -0300 Subject: [media] media: get rid of unused "extra_links" param on media_entity_init() Currently, media_entity_init() creates an array with the links, allocated at init time. It provides a parameter (extra_links) that would allocate more links than the current needs, but this is not used by any driver. As we want to be able to do dynamic link allocation/removal, we'll need to change the implementation of the links. So, before doing that, let's first remove that extra unused parameter, in order to cleanup the interface first. Signed-off-by: Mauro Carvalho Chehab Acked-by: Sakari Ailus Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- Documentation/media-framework.txt | 7 +++---- Documentation/video4linux/v4l2-framework.txt | 4 ++-- Documentation/zh_CN/video4linux/v4l2-framework.txt | 4 ++-- drivers/media/dvb-core/dvbdev.c | 2 +- drivers/media/dvb-frontends/au8522_decoder.c | 2 +- drivers/media/i2c/ad9389b.c | 2 +- drivers/media/i2c/adp1653.c | 2 +- drivers/media/i2c/adv7180.c | 2 +- drivers/media/i2c/adv7511.c | 2 +- drivers/media/i2c/adv7604.c | 2 +- drivers/media/i2c/adv7842.c | 2 +- drivers/media/i2c/as3645a.c | 2 +- drivers/media/i2c/cx25840/cx25840-core.c | 2 +- drivers/media/i2c/lm3560.c | 2 +- drivers/media/i2c/lm3646.c | 2 +- drivers/media/i2c/m5mols/m5mols_core.c | 2 +- drivers/media/i2c/mt9m032.c | 2 +- drivers/media/i2c/mt9p031.c | 2 +- drivers/media/i2c/mt9t001.c | 2 +- drivers/media/i2c/mt9v032.c | 2 +- drivers/media/i2c/noon010pc30.c | 2 +- drivers/media/i2c/ov2659.c | 2 +- drivers/media/i2c/ov9650.c | 2 +- drivers/media/i2c/s5c73m3/s5c73m3-core.c | 4 ++-- drivers/media/i2c/s5k4ecgx.c | 2 +- drivers/media/i2c/s5k5baf.c | 4 ++-- drivers/media/i2c/s5k6a3.c | 2 +- drivers/media/i2c/s5k6aa.c | 2 +- drivers/media/i2c/smiapp/smiapp-core.c | 4 ++-- drivers/media/i2c/tc358743.c | 2 +- drivers/media/i2c/tvp514x.c | 2 +- drivers/media/i2c/tvp7002.c | 2 +- drivers/media/media-entity.c | 18 ++++++++---------- drivers/media/platform/exynos4-is/fimc-capture.c | 4 ++-- drivers/media/platform/exynos4-is/fimc-isp-video.c | 2 +- drivers/media/platform/exynos4-is/fimc-isp.c | 2 +- drivers/media/platform/exynos4-is/fimc-lite.c | 4 ++-- drivers/media/platform/exynos4-is/fimc-m2m.c | 2 +- drivers/media/platform/exynos4-is/mipi-csis.c | 2 +- drivers/media/platform/omap3isp/ispccdc.c | 2 +- drivers/media/platform/omap3isp/ispccp2.c | 2 +- drivers/media/platform/omap3isp/ispcsi2.c | 2 +- drivers/media/platform/omap3isp/isppreview.c | 2 +- drivers/media/platform/omap3isp/ispresizer.c | 2 +- drivers/media/platform/omap3isp/ispstat.c | 2 +- drivers/media/platform/omap3isp/ispvideo.c | 2 +- drivers/media/platform/s3c-camif/camif-capture.c | 4 ++-- drivers/media/platform/vsp1/vsp1_entity.c | 2 +- drivers/media/platform/vsp1/vsp1_video.c | 2 +- drivers/media/platform/xilinx/xilinx-dma.c | 2 +- drivers/media/platform/xilinx/xilinx-tpg.c | 2 +- drivers/media/usb/au0828/au0828-video.c | 4 ++-- drivers/media/usb/cx231xx/cx231xx-video.c | 4 ++-- drivers/media/usb/uvc/uvc_entity.c | 4 ++-- drivers/media/v4l2-core/tuner-core.c | 2 +- drivers/media/v4l2-core/v4l2-flash-led-class.c | 2 +- drivers/staging/media/davinci_vpfe/dm365_ipipe.c | 2 +- drivers/staging/media/davinci_vpfe/dm365_ipipeif.c | 2 +- drivers/staging/media/davinci_vpfe/dm365_isif.c | 2 +- drivers/staging/media/davinci_vpfe/dm365_resizer.c | 6 +++--- drivers/staging/media/davinci_vpfe/vpfe_video.c | 2 +- drivers/staging/media/omap4iss/iss_csi2.c | 2 +- drivers/staging/media/omap4iss/iss_ipipe.c | 2 +- drivers/staging/media/omap4iss/iss_ipipeif.c | 2 +- drivers/staging/media/omap4iss/iss_resizer.c | 2 +- drivers/staging/media/omap4iss/iss_video.c | 2 +- include/media/media-entity.h | 2 +- 67 files changed, 89 insertions(+), 92 deletions(-) diff --git a/Documentation/media-framework.txt b/Documentation/media-framework.txt index f552a75c0e70b2..6903b25035774f 100644 --- a/Documentation/media-framework.txt +++ b/Documentation/media-framework.txt @@ -104,7 +104,7 @@ although drivers can allocate entities directly. Drivers initialize entities by calling media_entity_init(struct media_entity *entity, u16 num_pads, - struct media_pad *pads, u16 extra_links); + struct media_pad *pads); The media_entity name, type, flags, revision and group_id fields can be initialized before or after calling media_entity_init. Entities embedded in @@ -120,9 +120,8 @@ media_entity_init. The function will initialize the other pads fields. Unlike the number of pads, the total number of links isn't always known in advance by the entity driver. As an initial estimate, media_entity_init -pre-allocates a number of links equal to the number of pads plus an optional -number of extra links. The links array will be reallocated if it grows beyond -the initial estimate. +pre-allocates a number of links equal to the number of pads. The links array +will be reallocated if it grows beyond the initial estimate. Drivers register entities with a media device by calling diff --git a/Documentation/video4linux/v4l2-framework.txt b/Documentation/video4linux/v4l2-framework.txt index 75d5c18d689aaa..109cc379253443 100644 --- a/Documentation/video4linux/v4l2-framework.txt +++ b/Documentation/video4linux/v4l2-framework.txt @@ -300,7 +300,7 @@ calling media_entity_init(): struct media_pad *pads = &my_sd->pads; int err; - err = media_entity_init(&sd->entity, npads, pads, 0); + err = media_entity_init(&sd->entity, npads, pads); The pads array must have been previously initialized. There is no need to manually set the struct media_entity type and name fields, but the revision @@ -700,7 +700,7 @@ calling media_entity_init(): struct media_pad *pad = &my_vdev->pad; int err; - err = media_entity_init(&vdev->entity, 1, pad, 0); + err = media_entity_init(&vdev->entity, 1, pad); The pads array must have been previously initialized. There is no need to manually set the struct media_entity type and name fields. diff --git a/Documentation/zh_CN/video4linux/v4l2-framework.txt b/Documentation/zh_CN/video4linux/v4l2-framework.txt index 2b828e631e318c..ff815cb9203185 100644 --- a/Documentation/zh_CN/video4linux/v4l2-framework.txt +++ b/Documentation/zh_CN/video4linux/v4l2-framework.txt @@ -295,7 +295,7 @@ owner 域。若使用 i2c 辅助函数，这些都会帮你处理好。 struct media_pad *pads = &my_sd->pads; int err; - err = media_entity_init(&sd->entity, npads, pads, 0); + err = media_entity_init(&sd->entity, npads, pads); pads 数组必须预先初始化。无须手动设置 media_entity 的 type 和 name 域，但如有必要，revision 域必须初始化。 @@ -602,7 +602,7 @@ v4l2_file_operations 结构体是 file_operations 的一个子集。其主要 struct media_pad *pad = &my_vdev->pad; int err; - err = media_entity_init(&vdev->entity, 1, pad, 0); + err = media_entity_init(&vdev->entity, 1, pad); pads 数组必须预先初始化。没有必要手动设置 media_entity 的 type 和 name 域。 diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index 13bb57f0457f7f..2fdcbb5f000a95 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -249,7 +249,7 @@ static void dvb_register_media_device(struct dvb_device *dvbdev, } if (npads) - ret = media_entity_init(dvbdev->entity, npads, dvbdev->pads, 0); + ret = media_entity_init(dvbdev->entity, npads, dvbdev->pads); if (!ret) ret = media_device_register_entity(dvbdev->adapter->mdev, dvbdev->entity); diff --git a/drivers/media/dvb-frontends/au8522_decoder.c b/drivers/media/dvb-frontends/au8522_decoder.c index 0a8882cb23c38f..580859c89da176 100644 --- a/drivers/media/dvb-frontends/au8522_decoder.c +++ b/drivers/media/dvb-frontends/au8522_decoder.c @@ -769,7 +769,7 @@ static int au8522_probe(struct i2c_client *client, sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_DECODER; ret = media_entity_init(&sd->entity, ARRAY_SIZE(state->pads), - state->pads, 0); + state->pads); if (ret < 0) { v4l_info(client, "failed to initialize media entity!\n"); return ret; diff --git a/drivers/media/i2c/ad9389b.c b/drivers/media/i2c/ad9389b.c index 0494a7896aa219..a02dc4925707c0 100644 --- a/drivers/media/i2c/ad9389b.c +++ b/drivers/media/i2c/ad9389b.c @@ -1158,7 +1158,7 @@ static int ad9389b_probe(struct i2c_client *client, const struct i2c_device_id * state->rgb_quantization_range_ctrl->is_private = true; state->pad.flags = MEDIA_PAD_FL_SINK; - err = media_entity_init(&sd->entity, 1, &state->pad, 0); + err = media_entity_init(&sd->entity, 1, &state->pad); if (err) goto err_hdl; diff --git a/drivers/media/i2c/adp1653.c b/drivers/media/i2c/adp1653.c index f00745bbe471fe..07e46b5b849cfb 100644 --- a/drivers/media/i2c/adp1653.c +++ b/drivers/media/i2c/adp1653.c @@ -512,7 +512,7 @@ static int adp1653_probe(struct i2c_client *client, if (ret) goto free_and_quit; - ret = media_entity_init(&flash->subdev.entity, 0, NULL, 0); + ret = media_entity_init(&flash->subdev.entity, 0, NULL); if (ret < 0) goto free_and_quit; diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c index 3c3c4bfe386644..0fca8677014c90 100644 --- a/drivers/media/i2c/adv7180.c +++ b/drivers/media/i2c/adv7180.c @@ -1214,7 +1214,7 @@ static int adv7180_probe(struct i2c_client *client, state->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER; - ret = media_entity_init(&sd->entity, 1, &state->pad, 0); + ret = media_entity_init(&sd->entity, 1, &state->pad); if (ret) goto err_free_ctrl; diff --git a/drivers/media/i2c/adv7511.c b/drivers/media/i2c/adv7511.c index eeb2cd823c4d1f..cbcf81b1d29e5a 100644 --- a/drivers/media/i2c/adv7511.c +++ b/drivers/media/i2c/adv7511.c @@ -1482,7 +1482,7 @@ static int adv7511_probe(struct i2c_client *client, const struct i2c_device_id * state->rgb_quantization_range_ctrl->is_private = true; state->pad.flags = MEDIA_PAD_FL_SINK; - err = media_entity_init(&sd->entity, 1, &state->pad, 0); + err = media_entity_init(&sd->entity, 1, &state->pad); if (err) goto err_hdl; diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c index 74528622565587..c2df7e8053f3dd 100644 --- a/drivers/media/i2c/adv7604.c +++ b/drivers/media/i2c/adv7604.c @@ -3209,7 +3209,7 @@ static int adv76xx_probe(struct i2c_client *client, state->pads[state->source_pad].flags = MEDIA_PAD_FL_SOURCE; err = media_entity_init(&sd->entity, state->source_pad + 1, - state->pads, 0); + state->pads); if (err) goto err_work_queues; diff --git a/drivers/media/i2c/adv7842.c b/drivers/media/i2c/adv7842.c index 69378e4914b620..b5013a937254b5 100644 --- a/drivers/media/i2c/adv7842.c +++ b/drivers/media/i2c/adv7842.c @@ -3309,7 +3309,7 @@ static int adv7842_probe(struct i2c_client *client, adv7842_delayed_work_enable_hotplug); state->pad.flags = MEDIA_PAD_FL_SOURCE; - err = media_entity_init(&sd->entity, 1, &state->pad, 0); + err = media_entity_init(&sd->entity, 1, &state->pad); if (err) goto err_work_queues; diff --git a/drivers/media/i2c/as3645a.c b/drivers/media/i2c/as3645a.c index 29a2e7034aa60a..b83c7fc988aef3 100644 --- a/drivers/media/i2c/as3645a.c +++ b/drivers/media/i2c/as3645a.c @@ -827,7 +827,7 @@ static int as3645a_probe(struct i2c_client *client, if (ret < 0) goto done; - ret = media_entity_init(&flash->subdev.entity, 0, NULL, 0); + ret = media_entity_init(&flash->subdev.entity, 0, NULL); if (ret < 0) goto done; diff --git a/drivers/media/i2c/cx25840/cx25840-core.c b/drivers/media/i2c/cx25840/cx25840-core.c index f2e2c34ddbbd25..022ad5ae886994 100644 --- a/drivers/media/i2c/cx25840/cx25840-core.c +++ b/drivers/media/i2c/cx25840/cx25840-core.c @@ -5214,7 +5214,7 @@ static int cx25840_probe(struct i2c_client *client, sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_DECODER; ret = media_entity_init(&sd->entity, ARRAY_SIZE(state->pads), - state->pads, 0); + state->pads); if (ret < 0) { v4l_info(client, "failed to initialize media entity!\n"); return ret; diff --git a/drivers/media/i2c/lm3560.c b/drivers/media/i2c/lm3560.c index 19ecb88010647d..91c1ed27a458a0 100644 --- a/drivers/media/i2c/lm3560.c +++ b/drivers/media/i2c/lm3560.c @@ -365,7 +365,7 @@ static int lm3560_subdev_init(struct lm3560_flash *flash, rval = lm3560_init_controls(flash, led_no); if (rval) goto err_out; - rval = media_entity_init(&flash->subdev_led[led_no].entity, 0, NULL, 0); + rval = media_entity_init(&flash->subdev_led[led_no].entity, 0, NULL); if (rval < 0) goto err_out; flash->subdev_led[led_no].entity.type = MEDIA_ENT_T_V4L2_SUBDEV_FLASH; diff --git a/drivers/media/i2c/lm3646.c b/drivers/media/i2c/lm3646.c index 7fbe6ff1c4f4f7..a037616bbab0e3 100644 --- a/drivers/media/i2c/lm3646.c +++ b/drivers/media/i2c/lm3646.c @@ -282,7 +282,7 @@ static int lm3646_subdev_init(struct lm3646_flash *flash) rval = lm3646_init_controls(flash); if (rval) goto err_out; - rval = media_entity_init(&flash->subdev_led.entity, 0, NULL, 0); + rval = media_entity_init(&flash->subdev_led.entity, 0, NULL); if (rval < 0) goto err_out; flash->subdev_led.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_FLASH; diff --git a/drivers/media/i2c/m5mols/m5mols_core.c b/drivers/media/i2c/m5mols/m5mols_core.c index f8993933416e79..0788c1908f9c0c 100644 --- a/drivers/media/i2c/m5mols/m5mols_core.c +++ b/drivers/media/i2c/m5mols/m5mols_core.c @@ -975,7 +975,7 @@ static int m5mols_probe(struct i2c_client *client, sd->internal_ops = &m5mols_subdev_internal_ops; info->pad.flags = MEDIA_PAD_FL_SOURCE; - ret = media_entity_init(&sd->entity, 1, &info->pad, 0); + ret = media_entity_init(&sd->entity, 1, &info->pad); if (ret < 0) return ret; sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; diff --git a/drivers/media/i2c/mt9m032.c b/drivers/media/i2c/mt9m032.c index 101cb26f9330e7..a2a450839ca121 100644 --- a/drivers/media/i2c/mt9m032.c +++ b/drivers/media/i2c/mt9m032.c @@ -799,7 +799,7 @@ static int mt9m032_probe(struct i2c_client *client, sensor->subdev.ctrl_handler = &sensor->ctrls; sensor->pad.flags = MEDIA_PAD_FL_SOURCE; - ret = media_entity_init(&sensor->subdev.entity, 1, &sensor->pad, 0); + ret = media_entity_init(&sensor->subdev.entity, 1, &sensor->pad); if (ret < 0) goto error_ctrl; diff --git a/drivers/media/i2c/mt9p031.c b/drivers/media/i2c/mt9p031.c index a3da0e977d0b35..165f29cddca6d1 100644 --- a/drivers/media/i2c/mt9p031.c +++ b/drivers/media/i2c/mt9p031.c @@ -1112,7 +1112,7 @@ static int mt9p031_probe(struct i2c_client *client, mt9p031->subdev.internal_ops = &mt9p031_subdev_internal_ops; mt9p031->pad.flags = MEDIA_PAD_FL_SOURCE; - ret = media_entity_init(&mt9p031->subdev.entity, 1, &mt9p031->pad, 0); + ret = media_entity_init(&mt9p031->subdev.entity, 1, &mt9p031->pad); if (ret < 0) goto done; diff --git a/drivers/media/i2c/mt9t001.c b/drivers/media/i2c/mt9t001.c index b28fdff1d3107d..7d3df84651d885 100644 --- a/drivers/media/i2c/mt9t001.c +++ b/drivers/media/i2c/mt9t001.c @@ -933,7 +933,7 @@ static int mt9t001_probe(struct i2c_client *client, mt9t001->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; mt9t001->pad.flags = MEDIA_PAD_FL_SOURCE; - ret = media_entity_init(&mt9t001->subdev.entity, 1, &mt9t001->pad, 0); + ret = media_entity_init(&mt9t001->subdev.entity, 1, &mt9t001->pad); done: if (ret < 0) { diff --git a/drivers/media/i2c/mt9v032.c b/drivers/media/i2c/mt9v032.c index 1dbbd23fdfb039..b4f0f042c6c3b3 100644 --- a/drivers/media/i2c/mt9v032.c +++ b/drivers/media/i2c/mt9v032.c @@ -1046,7 +1046,7 @@ static int mt9v032_probe(struct i2c_client *client, mt9v032->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; mt9v032->pad.flags = MEDIA_PAD_FL_SOURCE; - ret = media_entity_init(&mt9v032->subdev.entity, 1, &mt9v032->pad, 0); + ret = media_entity_init(&mt9v032->subdev.entity, 1, &mt9v032->pad); if (ret < 0) goto err; diff --git a/drivers/media/i2c/noon010pc30.c b/drivers/media/i2c/noon010pc30.c index 69e4f3031d8b93..2e614ad473f1f0 100644 --- a/drivers/media/i2c/noon010pc30.c +++ b/drivers/media/i2c/noon010pc30.c @@ -780,7 +780,7 @@ static int noon010_probe(struct i2c_client *client, info->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; - ret = media_entity_init(&sd->entity, 1, &info->pad, 0); + ret = media_entity_init(&sd->entity, 1, &info->pad); if (ret < 0) goto np_err; diff --git a/drivers/media/i2c/ov2659.c b/drivers/media/i2c/ov2659.c index 82c7ac1cc88e89..ea95f854a51959 100644 --- a/drivers/media/i2c/ov2659.c +++ b/drivers/media/i2c/ov2659.c @@ -1446,7 +1446,7 @@ static int ov2659_probe(struct i2c_client *client, #if defined(CONFIG_MEDIA_CONTROLLER) ov2659->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; - ret = media_entity_init(&sd->entity, 1, &ov2659->pad, 0); + ret = media_entity_init(&sd->entity, 1, &ov2659->pad); if (ret < 0) { v4l2_ctrl_handler_free(&ov2659->ctrls); return ret; diff --git a/drivers/media/i2c/ov9650.c b/drivers/media/i2c/ov9650.c index 9fe9006474b2b5..b4c408f2a2b0d8 100644 --- a/drivers/media/i2c/ov9650.c +++ b/drivers/media/i2c/ov9650.c @@ -1501,7 +1501,7 @@ static int ov965x_probe(struct i2c_client *client, ov965x->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; - ret = media_entity_init(&sd->entity, 1, &ov965x->pad, 0); + ret = media_entity_init(&sd->entity, 1, &ov965x->pad); if (ret < 0) return ret; diff --git a/drivers/media/i2c/s5c73m3/s5c73m3-core.c b/drivers/media/i2c/s5c73m3/s5c73m3-core.c index 25f5e79dc9bc5a..381f903831f470 100644 --- a/drivers/media/i2c/s5c73m3/s5c73m3-core.c +++ b/drivers/media/i2c/s5c73m3/s5c73m3-core.c @@ -1691,7 +1691,7 @@ static int s5c73m3_probe(struct i2c_client *client, sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV; ret = media_entity_init(&sd->entity, S5C73M3_NUM_PADS, - state->sensor_pads, 0); + state->sensor_pads); if (ret < 0) return ret; @@ -1707,7 +1707,7 @@ static int s5c73m3_probe(struct i2c_client *client, oif_sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV; ret = media_entity_init(&oif_sd->entity, OIF_NUM_PADS, - state->oif_pads, 0); + state->oif_pads); if (ret < 0) return ret; diff --git a/drivers/media/i2c/s5k4ecgx.c b/drivers/media/i2c/s5k4ecgx.c index 6757aca2cdabe0..445a89e30949df 100644 --- a/drivers/media/i2c/s5k4ecgx.c +++ b/drivers/media/i2c/s5k4ecgx.c @@ -962,7 +962,7 @@ static int s5k4ecgx_probe(struct i2c_client *client, priv->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; - ret = media_entity_init(&sd->entity, 1, &priv->pad, 0); + ret = media_entity_init(&sd->entity, 1, &priv->pad); if (ret) return ret; diff --git a/drivers/media/i2c/s5k5baf.c b/drivers/media/i2c/s5k5baf.c index 774e0d0c94cb3b..30a9ca62e034dc 100644 --- a/drivers/media/i2c/s5k5baf.c +++ b/drivers/media/i2c/s5k5baf.c @@ -1905,7 +1905,7 @@ static int s5k5baf_configure_subdevs(struct s5k5baf *state, state->cis_pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; - ret = media_entity_init(&sd->entity, NUM_CIS_PADS, &state->cis_pad, 0); + ret = media_entity_init(&sd->entity, NUM_CIS_PADS, &state->cis_pad); if (ret < 0) goto err; @@ -1920,7 +1920,7 @@ static int s5k5baf_configure_subdevs(struct s5k5baf *state, state->pads[PAD_CIS].flags = MEDIA_PAD_FL_SINK; state->pads[PAD_OUT].flags = MEDIA_PAD_FL_SOURCE; sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV; - ret = media_entity_init(&sd->entity, NUM_ISP_PADS, state->pads, 0); + ret = media_entity_init(&sd->entity, NUM_ISP_PADS, state->pads); if (!ret) return 0; diff --git a/drivers/media/i2c/s5k6a3.c b/drivers/media/i2c/s5k6a3.c index b1b1574dfb95d7..2434a794478185 100644 --- a/drivers/media/i2c/s5k6a3.c +++ b/drivers/media/i2c/s5k6a3.c @@ -333,7 +333,7 @@ static int s5k6a3_probe(struct i2c_client *client, sensor->format.height = S5K6A3_DEFAULT_HEIGHT; sensor->pad.flags = MEDIA_PAD_FL_SOURCE; - ret = media_entity_init(&sd->entity, 1, &sensor->pad, 0); + ret = media_entity_init(&sd->entity, 1, &sensor->pad); if (ret < 0) return ret; diff --git a/drivers/media/i2c/s5k6aa.c b/drivers/media/i2c/s5k6aa.c index 60aaff7190d24e..31be29d250932d 100644 --- a/drivers/media/i2c/s5k6aa.c +++ b/drivers/media/i2c/s5k6aa.c @@ -1578,7 +1578,7 @@ static int s5k6aa_probe(struct i2c_client *client, s5k6aa->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; - ret = media_entity_init(&sd->entity, 1, &s5k6aa->pad, 0); + ret = media_entity_init(&sd->entity, 1, &s5k6aa->pad); if (ret) return ret; diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c index fb39dfd55e7531..7ed0538ea8db2a 100644 --- a/drivers/media/i2c/smiapp/smiapp-core.c +++ b/drivers/media/i2c/smiapp/smiapp-core.c @@ -2488,7 +2488,7 @@ static int smiapp_register_subdevs(struct smiapp_sensor *sensor) continue; rval = media_entity_init(&this->sd.entity, - this->npads, this->pads, 0); + this->npads, this->pads); if (rval) { dev_err(&client->dev, "media_entity_init failed\n"); @@ -3078,7 +3078,7 @@ static int smiapp_probe(struct i2c_client *client, sensor->src->pads[0].flags = MEDIA_PAD_FL_SOURCE; rval = media_entity_init(&sensor->src->sd.entity, 2, - sensor->src->pads, 0); + sensor->src->pads); if (rval < 0) return rval; diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c index 77b801152ea590..78e5b644d40060 100644 --- a/drivers/media/i2c/tc358743.c +++ b/drivers/media/i2c/tc358743.c @@ -1889,7 +1889,7 @@ static int tc358743_probe(struct i2c_client *client, } state->pad.flags = MEDIA_PAD_FL_SOURCE; - err = media_entity_init(&sd->entity, 1, &state->pad, 0); + err = media_entity_init(&sd->entity, 1, &state->pad); if (err < 0) goto err_hdl; diff --git a/drivers/media/i2c/tvp514x.c b/drivers/media/i2c/tvp514x.c index b5dba5b7ce3a66..11e426dbe89197 100644 --- a/drivers/media/i2c/tvp514x.c +++ b/drivers/media/i2c/tvp514x.c @@ -1097,7 +1097,7 @@ tvp514x_probe(struct i2c_client *client, const struct i2c_device_id *id) decoder->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; decoder->sd.entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER; - ret = media_entity_init(&decoder->sd.entity, 1, &decoder->pad, 0); + ret = media_entity_init(&decoder->sd.entity, 1, &decoder->pad); if (ret < 0) { v4l2_err(sd, "%s decoder driver failed to register !!\n", sd->name); diff --git a/drivers/media/i2c/tvp7002.c b/drivers/media/i2c/tvp7002.c index 772a3043ae3b98..a5ee2b8df4294a 100644 --- a/drivers/media/i2c/tvp7002.c +++ b/drivers/media/i2c/tvp7002.c @@ -1014,7 +1014,7 @@ static int tvp7002_probe(struct i2c_client *c, const struct i2c_device_id *id) device->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; device->sd.entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER; - error = media_entity_init(&device->sd.entity, 1, &device->pad, 0); + error = media_entity_init(&device->sd.entity, 1, &device->pad); if (error < 0) return error; #endif diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 767fe55ba08eec..eabcbacfe387c5 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -30,32 +30,30 @@ * media_entity_init - Initialize a media entity * * @num_pads: Total number of sink and source pads. - * @extra_links: Initial estimate of the number of extra links. * @pads: Array of 'num_pads' pads. * * The total number of pads is an intrinsic property of entities known by the * entity driver, while the total number of links depends on hardware design * and is an extrinsic property unknown to the entity driver. However, in most - * use cases the entity driver can guess the number of links which can safely - * be assumed to be equal to or larger than the number of pads. + * use cases the number of links can safely be assumed to be equal to or + * larger than the number of pads. * - * For those reasons the links array can be preallocated based on the entity - * driver guess and will be reallocated later if extra links need to be - * created. + * For those reasons the links array can be preallocated based on the number + * of pads and will be reallocated later if extra links need to be created. * * This function allocates a links array with enough space to hold at least - * 'num_pads' + 'extra_links' elements. The media_entity::max_links field will - * be set to the number of allocated elements. + * 'num_pads' elements. The media_entity::max_links field will be set to the + * number of allocated elements. * * The pads array is managed by the entity driver and passed to * media_entity_init() where its pointer will be stored in the entity structure. */ int media_entity_init(struct media_entity *entity, u16 num_pads, - struct media_pad *pads, u16 extra_links) + struct media_pad *pads) { struct media_link *links; - unsigned int max_links = num_pads + extra_links; + unsigned int max_links = num_pads; unsigned int i; links = kzalloc(max_links * sizeof(links[0]), GFP_KERNEL); diff --git a/drivers/media/platform/exynos4-is/fimc-capture.c b/drivers/media/platform/exynos4-is/fimc-capture.c index 0d549a6c8a13ca..8f5bee42783f1b 100644 --- a/drivers/media/platform/exynos4-is/fimc-capture.c +++ b/drivers/media/platform/exynos4-is/fimc-capture.c @@ -1800,7 +1800,7 @@ static int fimc_register_capture_device(struct fimc_dev *fimc, vid_cap->wb_fmt.code = fmt->mbus_code; vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK; - ret = media_entity_init(&vfd->entity, 1, &vid_cap->vd_pad, 0); + ret = media_entity_init(&vfd->entity, 1, &vid_cap->vd_pad); if (ret) goto err_free_ctx; @@ -1893,7 +1893,7 @@ int fimc_initialize_capture_subdev(struct fimc_dev *fimc) fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_FIFO].flags = MEDIA_PAD_FL_SINK; fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM, - fimc->vid_cap.sd_pads, 0); + fimc->vid_cap.sd_pads); if (ret) return ret; diff --git a/drivers/media/platform/exynos4-is/fimc-isp-video.c b/drivers/media/platform/exynos4-is/fimc-isp-video.c index 0dd22ec6669410..817226d52b7421 100644 --- a/drivers/media/platform/exynos4-is/fimc-isp-video.c +++ b/drivers/media/platform/exynos4-is/fimc-isp-video.c @@ -617,7 +617,7 @@ int fimc_isp_video_device_register(struct fimc_isp *isp, vdev->lock = &isp->video_lock; iv->pad.flags = MEDIA_PAD_FL_SINK; - ret = media_entity_init(&vdev->entity, 1, &iv->pad, 0); + ret = media_entity_init(&vdev->entity, 1, &iv->pad); if (ret < 0) return ret; diff --git a/drivers/media/platform/exynos4-is/fimc-isp.c b/drivers/media/platform/exynos4-is/fimc-isp.c index 5d78f5716f3b8d..f52eebf765c178 100644 --- a/drivers/media/platform/exynos4-is/fimc-isp.c +++ b/drivers/media/platform/exynos4-is/fimc-isp.c @@ -709,7 +709,7 @@ int fimc_isp_subdev_create(struct fimc_isp *isp) isp->subdev_pads[FIMC_ISP_SD_PAD_SRC_FIFO].flags = MEDIA_PAD_FL_SOURCE; isp->subdev_pads[FIMC_ISP_SD_PAD_SRC_DMA].flags = MEDIA_PAD_FL_SOURCE; ret = media_entity_init(&sd->entity, FIMC_ISP_SD_PADS_NUM, - isp->subdev_pads, 0); + isp->subdev_pads); if (ret) return ret; diff --git a/drivers/media/platform/exynos4-is/fimc-lite.c b/drivers/media/platform/exynos4-is/fimc-lite.c index 639ee710499ed7..2ce670425cd96b 100644 --- a/drivers/media/platform/exynos4-is/fimc-lite.c +++ b/drivers/media/platform/exynos4-is/fimc-lite.c @@ -1316,7 +1316,7 @@ static int fimc_lite_subdev_registered(struct v4l2_subdev *sd) return ret; fimc->vd_pad.flags = MEDIA_PAD_FL_SINK; - ret = media_entity_init(&vfd->entity, 1, &fimc->vd_pad, 0); + ret = media_entity_init(&vfd->entity, 1, &fimc->vd_pad); if (ret < 0) return ret; @@ -1431,7 +1431,7 @@ static int fimc_lite_create_capture_subdev(struct fimc_lite *fimc) fimc->subdev_pads[FLITE_SD_PAD_SOURCE_DMA].flags = MEDIA_PAD_FL_SOURCE; fimc->subdev_pads[FLITE_SD_PAD_SOURCE_ISP].flags = MEDIA_PAD_FL_SOURCE; ret = media_entity_init(&sd->entity, FLITE_SD_PADS_NUM, - fimc->subdev_pads, 0); + fimc->subdev_pads); if (ret) return ret; diff --git a/drivers/media/platform/exynos4-is/fimc-m2m.c b/drivers/media/platform/exynos4-is/fimc-m2m.c index 5aa857c7b631e6..8ff4e6f76b8489 100644 --- a/drivers/media/platform/exynos4-is/fimc-m2m.c +++ b/drivers/media/platform/exynos4-is/fimc-m2m.c @@ -739,7 +739,7 @@ int fimc_register_m2m_device(struct fimc_dev *fimc, return PTR_ERR(fimc->m2m.m2m_dev); } - ret = media_entity_init(&vfd->entity, 0, NULL, 0); + ret = media_entity_init(&vfd->entity, 0, NULL); if (ret) goto err_me; diff --git a/drivers/media/platform/exynos4-is/mipi-csis.c b/drivers/media/platform/exynos4-is/mipi-csis.c index ff5dabf24694ae..8847797b0d0b4e 100644 --- a/drivers/media/platform/exynos4-is/mipi-csis.c +++ b/drivers/media/platform/exynos4-is/mipi-csis.c @@ -867,7 +867,7 @@ static int s5pcsis_probe(struct platform_device *pdev) state->pads[CSIS_PAD_SINK].flags = MEDIA_PAD_FL_SINK; state->pads[CSIS_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; ret = media_entity_init(&state->sd.entity, - CSIS_PADS_NUM, state->pads, 0); + CSIS_PADS_NUM, state->pads); if (ret < 0) goto e_clkdis; diff --git a/drivers/media/platform/omap3isp/ispccdc.c b/drivers/media/platform/omap3isp/ispccdc.c index a6a61cce43ddad..3b10304b580bd8 100644 --- a/drivers/media/platform/omap3isp/ispccdc.c +++ b/drivers/media/platform/omap3isp/ispccdc.c @@ -2650,7 +2650,7 @@ static int ccdc_init_entities(struct isp_ccdc_device *ccdc) pads[CCDC_PAD_SOURCE_OF].flags = MEDIA_PAD_FL_SOURCE; me->ops = &ccdc_media_ops; - ret = media_entity_init(me, CCDC_PADS_NUM, pads, 0); + ret = media_entity_init(me, CCDC_PADS_NUM, pads); if (ret < 0) return ret; diff --git a/drivers/media/platform/omap3isp/ispccp2.c b/drivers/media/platform/omap3isp/ispccp2.c index 38e6a974c5b1e8..e1b5f5bea541fb 100644 --- a/drivers/media/platform/omap3isp/ispccp2.c +++ b/drivers/media/platform/omap3isp/ispccp2.c @@ -1071,7 +1071,7 @@ static int ccp2_init_entities(struct isp_ccp2_device *ccp2) pads[CCP2_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; me->ops = &ccp2_media_ops; - ret = media_entity_init(me, CCP2_PADS_NUM, pads, 0); + ret = media_entity_init(me, CCP2_PADS_NUM, pads); if (ret < 0) return ret; diff --git a/drivers/media/platform/omap3isp/ispcsi2.c b/drivers/media/platform/omap3isp/ispcsi2.c index a78338d012b4df..6fff92f0813a03 100644 --- a/drivers/media/platform/omap3isp/ispcsi2.c +++ b/drivers/media/platform/omap3isp/ispcsi2.c @@ -1245,7 +1245,7 @@ static int csi2_init_entities(struct isp_csi2_device *csi2) | MEDIA_PAD_FL_MUST_CONNECT; me->ops = &csi2_media_ops; - ret = media_entity_init(me, CSI2_PADS_NUM, pads, 0); + ret = media_entity_init(me, CSI2_PADS_NUM, pads); if (ret < 0) return ret; diff --git a/drivers/media/platform/omap3isp/isppreview.c b/drivers/media/platform/omap3isp/isppreview.c index 13803270d1045e..b440c6342ca496 100644 --- a/drivers/media/platform/omap3isp/isppreview.c +++ b/drivers/media/platform/omap3isp/isppreview.c @@ -2282,7 +2282,7 @@ static int preview_init_entities(struct isp_prev_device *prev) pads[PREV_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; me->ops = &preview_media_ops; - ret = media_entity_init(me, PREV_PADS_NUM, pads, 0); + ret = media_entity_init(me, PREV_PADS_NUM, pads); if (ret < 0) return ret; diff --git a/drivers/media/platform/omap3isp/ispresizer.c b/drivers/media/platform/omap3isp/ispresizer.c index 7cfb43dc0ffd77..3deb1ec4a973a2 100644 --- a/drivers/media/platform/omap3isp/ispresizer.c +++ b/drivers/media/platform/omap3isp/ispresizer.c @@ -1728,7 +1728,7 @@ static int resizer_init_entities(struct isp_res_device *res) pads[RESZ_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; me->ops = &resizer_media_ops; - ret = media_entity_init(me, RESZ_PADS_NUM, pads, 0); + ret = media_entity_init(me, RESZ_PADS_NUM, pads); if (ret < 0) return ret; diff --git a/drivers/media/platform/omap3isp/ispstat.c b/drivers/media/platform/omap3isp/ispstat.c index 94d4c295d3d00f..f7a5eee9f11d53 100644 --- a/drivers/media/platform/omap3isp/ispstat.c +++ b/drivers/media/platform/omap3isp/ispstat.c @@ -1028,7 +1028,7 @@ static int isp_stat_init_entities(struct ispstat *stat, const char *name, stat->pad.flags = MEDIA_PAD_FL_SINK | MEDIA_PAD_FL_MUST_CONNECT; me->ops = NULL; - return media_entity_init(me, 1, &stat->pad, 0); + return media_entity_init(me, 1, &stat->pad); } int omap3isp_stat_init(struct ispstat *stat, const char *name, diff --git a/drivers/media/platform/omap3isp/ispvideo.c b/drivers/media/platform/omap3isp/ispvideo.c index ecadca3e945b44..963cb9318873d0 100644 --- a/drivers/media/platform/omap3isp/ispvideo.c +++ b/drivers/media/platform/omap3isp/ispvideo.c @@ -1367,7 +1367,7 @@ int omap3isp_video_init(struct isp_video *video, const char *name) if (IS_ERR(video->alloc_ctx)) return PTR_ERR(video->alloc_ctx); - ret = media_entity_init(&video->video.entity, 1, &video->pad, 0); + ret = media_entity_init(&video->video.entity, 1, &video->pad); if (ret < 0) { vb2_dma_contig_cleanup_ctx(video->alloc_ctx); return ret; diff --git a/drivers/media/platform/s3c-camif/camif-capture.c b/drivers/media/platform/s3c-camif/camif-capture.c index ec3abbed87d905..a87ac16273a048 100644 --- a/drivers/media/platform/s3c-camif/camif-capture.c +++ b/drivers/media/platform/s3c-camif/camif-capture.c @@ -1144,7 +1144,7 @@ int s3c_camif_register_video_node(struct camif_dev *camif, int idx) goto err_vd_rel; vp->pad.flags = MEDIA_PAD_FL_SINK; - ret = media_entity_init(&vfd->entity, 1, &vp->pad, 0); + ret = media_entity_init(&vfd->entity, 1, &vp->pad); if (ret) goto err_vd_rel; @@ -1560,7 +1560,7 @@ int s3c_camif_create_subdev(struct camif_dev *camif) camif->pads[CAMIF_SD_PAD_SOURCE_P].flags = MEDIA_PAD_FL_SOURCE; ret = media_entity_init(&sd->entity, CAMIF_SD_PADS_NUM, - camif->pads, 0); + camif->pads); if (ret) return ret; diff --git a/drivers/media/platform/vsp1/vsp1_entity.c b/drivers/media/platform/vsp1/vsp1_entity.c index fd95a75b04f4c0..619942ff2058f4 100644 --- a/drivers/media/platform/vsp1/vsp1_entity.c +++ b/drivers/media/platform/vsp1/vsp1_entity.c @@ -220,7 +220,7 @@ int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity, /* Initialize the media entity. */ return media_entity_init(&entity->subdev.entity, num_pads, - entity->pads, 0); + entity->pads); } void vsp1_entity_destroy(struct vsp1_entity *entity) diff --git a/drivers/media/platform/vsp1/vsp1_video.c b/drivers/media/platform/vsp1/vsp1_video.c index 45eb65fa23dbbc..fb52683b5c2228 100644 --- a/drivers/media/platform/vsp1/vsp1_video.c +++ b/drivers/media/platform/vsp1/vsp1_video.c @@ -1193,7 +1193,7 @@ int vsp1_video_init(struct vsp1_video *video, struct vsp1_entity *rwpf) video->pipe.state = VSP1_PIPELINE_STOPPED; /* Initialize the media entity... */ - ret = media_entity_init(&video->video.entity, 1, &video->pad, 0); + ret = media_entity_init(&video->video.entity, 1, &video->pad); if (ret < 0) return ret; diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c index 722758f3392412..ce2d34df12ed81 100644 --- a/drivers/media/platform/xilinx/xilinx-dma.c +++ b/drivers/media/platform/xilinx/xilinx-dma.c @@ -677,7 +677,7 @@ int xvip_dma_init(struct xvip_composite_device *xdev, struct xvip_dma *dma, dma->pad.flags = type == V4L2_BUF_TYPE_VIDEO_CAPTURE ? MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE; - ret = media_entity_init(&dma->video.entity, 1, &dma->pad, 0); + ret = media_entity_init(&dma->video.entity, 1, &dma->pad); if (ret < 0) goto error; diff --git a/drivers/media/platform/xilinx/xilinx-tpg.c b/drivers/media/platform/xilinx/xilinx-tpg.c index 8bd7e373601953..c09ca513a9dc5d 100644 --- a/drivers/media/platform/xilinx/xilinx-tpg.c +++ b/drivers/media/platform/xilinx/xilinx-tpg.c @@ -838,7 +838,7 @@ static int xtpg_probe(struct platform_device *pdev) subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; subdev->entity.ops = &xtpg_media_ops; - ret = media_entity_init(&subdev->entity, xtpg->npads, xtpg->pads, 0); + ret = media_entity_init(&subdev->entity, xtpg->npads, xtpg->pads); if (ret < 0) goto error; diff --git a/drivers/media/usb/au0828/au0828-video.c b/drivers/media/usb/au0828/au0828-video.c index 0b6e97d4fd949e..57d7b9b45123cc 100644 --- a/drivers/media/usb/au0828/au0828-video.c +++ b/drivers/media/usb/au0828/au0828-video.c @@ -1887,12 +1887,12 @@ int au0828_analog_register(struct au0828_dev *dev, #if defined(CONFIG_MEDIA_CONTROLLER) dev->video_pad.flags = MEDIA_PAD_FL_SINK; - ret = media_entity_init(&dev->vdev.entity, 1, &dev->video_pad, 0); + ret = media_entity_init(&dev->vdev.entity, 1, &dev->video_pad); if (ret < 0) pr_err("failed to initialize video media entity!\n"); dev->vbi_pad.flags = MEDIA_PAD_FL_SINK; - ret = media_entity_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad, 0); + ret = media_entity_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad); if (ret < 0) pr_err("failed to initialize vbi media entity!\n"); #endif diff --git a/drivers/media/usb/cx231xx/cx231xx-video.c b/drivers/media/usb/cx231xx/cx231xx-video.c index a70850fe6235ac..cbb28c9123191e 100644 --- a/drivers/media/usb/cx231xx/cx231xx-video.c +++ b/drivers/media/usb/cx231xx/cx231xx-video.c @@ -2177,7 +2177,7 @@ int cx231xx_register_analog_devices(struct cx231xx *dev) cx231xx_vdev_init(dev, &dev->vdev, &cx231xx_video_template, "video"); #if defined(CONFIG_MEDIA_CONTROLLER) dev->video_pad.flags = MEDIA_PAD_FL_SINK; - ret = media_entity_init(&dev->vdev.entity, 1, &dev->video_pad, 0); + ret = media_entity_init(&dev->vdev.entity, 1, &dev->video_pad); if (ret < 0) dev_err(dev->dev, "failed to initialize video media entity!\n"); #endif @@ -2204,7 +2204,7 @@ int cx231xx_register_analog_devices(struct cx231xx *dev) #if defined(CONFIG_MEDIA_CONTROLLER) dev->vbi_pad.flags = MEDIA_PAD_FL_SINK; - ret = media_entity_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad, 0); + ret = media_entity_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad); if (ret < 0) dev_err(dev->dev, "failed to initialize vbi media entity!\n"); #endif diff --git a/drivers/media/usb/uvc/uvc_entity.c b/drivers/media/usb/uvc/uvc_entity.c index dc56a59ecadc4b..24544549151617 100644 --- a/drivers/media/usb/uvc/uvc_entity.c +++ b/drivers/media/usb/uvc/uvc_entity.c @@ -89,10 +89,10 @@ static int uvc_mc_init_entity(struct uvc_entity *entity) sizeof(entity->subdev.name)); ret = media_entity_init(&entity->subdev.entity, - entity->num_pads, entity->pads, 0); + entity->num_pads, entity->pads); } else if (entity->vdev != NULL) { ret = media_entity_init(&entity->vdev->entity, - entity->num_pads, entity->pads, 0); + entity->num_pads, entity->pads); if (entity->flags & UVC_ENTITY_FLAG_DEFAULT) entity->vdev->entity.flags |= MEDIA_ENT_FL_DEFAULT; } else diff --git a/drivers/media/v4l2-core/tuner-core.c b/drivers/media/v4l2-core/tuner-core.c index 581e21ad680150..100b8f0696409b 100644 --- a/drivers/media/v4l2-core/tuner-core.c +++ b/drivers/media/v4l2-core/tuner-core.c @@ -699,7 +699,7 @@ register_client: t->sd.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_TUNER; t->sd.entity.name = t->name; - ret = media_entity_init(&t->sd.entity, 1, &t->pad, 0); + ret = media_entity_init(&t->sd.entity, 1, &t->pad); if (ret < 0) { tuner_err("failed to initialize media entity!\n"); kfree(t); diff --git a/drivers/media/v4l2-core/v4l2-flash-led-class.c b/drivers/media/v4l2-core/v4l2-flash-led-class.c index 5bdfb8d5263a02..34c489fed55e76 100644 --- a/drivers/media/v4l2-core/v4l2-flash-led-class.c +++ b/drivers/media/v4l2-core/v4l2-flash-led-class.c @@ -651,7 +651,7 @@ struct v4l2_flash *v4l2_flash_init( sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; strlcpy(sd->name, config->dev_name, sizeof(sd->name)); - ret = media_entity_init(&sd->entity, 0, NULL, 0); + ret = media_entity_init(&sd->entity, 0, NULL); if (ret < 0) return ERR_PTR(ret); diff --git a/drivers/staging/media/davinci_vpfe/dm365_ipipe.c b/drivers/staging/media/davinci_vpfe/dm365_ipipe.c index c492914768eaa5..3badf169c419aa 100644 --- a/drivers/staging/media/davinci_vpfe/dm365_ipipe.c +++ b/drivers/staging/media/davinci_vpfe/dm365_ipipe.c @@ -1840,7 +1840,7 @@ vpfe_ipipe_init(struct vpfe_ipipe_device *ipipe, struct platform_device *pdev) v4l2_ctrl_handler_setup(&ipipe->ctrls); sd->ctrl_handler = &ipipe->ctrls; - return media_entity_init(me, IPIPE_PADS_NUM, pads, 0); + return media_entity_init(me, IPIPE_PADS_NUM, pads); } /* diff --git a/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c b/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c index 8b230541b1d16a..8fb6761868986b 100644 --- a/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c +++ b/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c @@ -1026,7 +1026,7 @@ int vpfe_ipipeif_init(struct vpfe_ipipeif_device *ipipeif, ipipeif->output = IPIPEIF_OUTPUT_NONE; me->ops = &ipipeif_media_ops; - ret = media_entity_init(me, IPIPEIF_NUM_PADS, pads, 0); + ret = media_entity_init(me, IPIPEIF_NUM_PADS, pads); if (ret) goto fail; diff --git a/drivers/staging/media/davinci_vpfe/dm365_isif.c b/drivers/staging/media/davinci_vpfe/dm365_isif.c index 80907b46441294..b1f01adfa7c833 100644 --- a/drivers/staging/media/davinci_vpfe/dm365_isif.c +++ b/drivers/staging/media/davinci_vpfe/dm365_isif.c @@ -2052,7 +2052,7 @@ int vpfe_isif_init(struct vpfe_isif_device *isif, struct platform_device *pdev) isif->input = ISIF_INPUT_NONE; isif->output = ISIF_OUTPUT_NONE; me->ops = &isif_media_ops; - status = media_entity_init(me, ISIF_PADS_NUM, pads, 0); + status = media_entity_init(me, ISIF_PADS_NUM, pads); if (status) goto isif_fail; isif->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; diff --git a/drivers/staging/media/davinci_vpfe/dm365_resizer.c b/drivers/staging/media/davinci_vpfe/dm365_resizer.c index d892fee3f52fd1..7275cf3d6c20e4 100644 --- a/drivers/staging/media/davinci_vpfe/dm365_resizer.c +++ b/drivers/staging/media/davinci_vpfe/dm365_resizer.c @@ -1910,7 +1910,7 @@ int vpfe_resizer_init(struct vpfe_resizer_device *vpfe_rsz, vpfe_rsz->crop_resizer.output2 = RESIZER_CROP_OUTPUT_NONE; vpfe_rsz->crop_resizer.rsz_device = vpfe_rsz; me->ops = &resizer_media_ops; - ret = media_entity_init(me, RESIZER_CROP_PADS_NUM, pads, 0); + ret = media_entity_init(me, RESIZER_CROP_PADS_NUM, pads); if (ret) return ret; @@ -1932,7 +1932,7 @@ int vpfe_resizer_init(struct vpfe_resizer_device *vpfe_rsz, vpfe_rsz->resizer_a.output = RESIZER_OUTPUT_NONE; vpfe_rsz->resizer_a.rsz_device = vpfe_rsz; me->ops = &resizer_media_ops; - ret = media_entity_init(me, RESIZER_PADS_NUM, pads, 0); + ret = media_entity_init(me, RESIZER_PADS_NUM, pads); if (ret) return ret; @@ -1954,7 +1954,7 @@ int vpfe_resizer_init(struct vpfe_resizer_device *vpfe_rsz, vpfe_rsz->resizer_b.output = RESIZER_OUTPUT_NONE; vpfe_rsz->resizer_b.rsz_device = vpfe_rsz; me->ops = &resizer_media_ops; - ret = media_entity_init(me, RESIZER_PADS_NUM, pads, 0); + ret = media_entity_init(me, RESIZER_PADS_NUM, pads); if (ret) return ret; diff --git a/drivers/staging/media/davinci_vpfe/vpfe_video.c b/drivers/staging/media/davinci_vpfe/vpfe_video.c index adb2bc8811aba9..daae720eb82caf 100644 --- a/drivers/staging/media/davinci_vpfe/vpfe_video.c +++ b/drivers/staging/media/davinci_vpfe/vpfe_video.c @@ -1601,7 +1601,7 @@ int vpfe_video_init(struct vpfe_video_device *video, const char *name) spin_lock_init(&video->dma_queue_lock); mutex_init(&video->lock); ret = media_entity_init(&video->video_dev.entity, - 1, &video->pad, 0); + 1, &video->pad); if (ret < 0) return ret; diff --git a/drivers/staging/media/omap4iss/iss_csi2.c b/drivers/staging/media/omap4iss/iss_csi2.c index b941035139ae8b..86111e39a7283f 100644 --- a/drivers/staging/media/omap4iss/iss_csi2.c +++ b/drivers/staging/media/omap4iss/iss_csi2.c @@ -1271,7 +1271,7 @@ static int csi2_init_entities(struct iss_csi2_device *csi2, const char *subname) pads[CSI2_PAD_SINK].flags = MEDIA_PAD_FL_SINK; me->ops = &csi2_media_ops; - ret = media_entity_init(me, CSI2_PADS_NUM, pads, 0); + ret = media_entity_init(me, CSI2_PADS_NUM, pads); if (ret < 0) return ret; diff --git a/drivers/staging/media/omap4iss/iss_ipipe.c b/drivers/staging/media/omap4iss/iss_ipipe.c index dd0abeffd893f8..44220765fb3aa9 100644 --- a/drivers/staging/media/omap4iss/iss_ipipe.c +++ b/drivers/staging/media/omap4iss/iss_ipipe.c @@ -513,7 +513,7 @@ static int ipipe_init_entities(struct iss_ipipe_device *ipipe) pads[IPIPE_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE; me->ops = &ipipe_media_ops; - ret = media_entity_init(me, IPIPE_PADS_NUM, pads, 0); + ret = media_entity_init(me, IPIPE_PADS_NUM, pads); if (ret < 0) return ret; diff --git a/drivers/staging/media/omap4iss/iss_ipipeif.c b/drivers/staging/media/omap4iss/iss_ipipeif.c index 5f9e449e70074a..d031a5f22cdcb5 100644 --- a/drivers/staging/media/omap4iss/iss_ipipeif.c +++ b/drivers/staging/media/omap4iss/iss_ipipeif.c @@ -743,7 +743,7 @@ static int ipipeif_init_entities(struct iss_ipipeif_device *ipipeif) pads[IPIPEIF_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE; me->ops = &ipipeif_media_ops; - ret = media_entity_init(me, IPIPEIF_PADS_NUM, pads, 0); + ret = media_entity_init(me, IPIPEIF_PADS_NUM, pads); if (ret < 0) return ret; diff --git a/drivers/staging/media/omap4iss/iss_resizer.c b/drivers/staging/media/omap4iss/iss_resizer.c index 108961e05f539d..11031d9de3ab44 100644 --- a/drivers/staging/media/omap4iss/iss_resizer.c +++ b/drivers/staging/media/omap4iss/iss_resizer.c @@ -785,7 +785,7 @@ static int resizer_init_entities(struct iss_resizer_device *resizer) pads[RESIZER_PAD_SOURCE_MEM].flags = MEDIA_PAD_FL_SOURCE; me->ops = &resizer_media_ops; - ret = media_entity_init(me, RESIZER_PADS_NUM, pads, 0); + ret = media_entity_init(me, RESIZER_PADS_NUM, pads); if (ret < 0) return ret; diff --git a/drivers/staging/media/omap4iss/iss_video.c b/drivers/staging/media/omap4iss/iss_video.c index e9aeca08986f90..194c41ef822c99 100644 --- a/drivers/staging/media/omap4iss/iss_video.c +++ b/drivers/staging/media/omap4iss/iss_video.c @@ -1102,7 +1102,7 @@ int omap4iss_video_init(struct iss_video *video, const char *name) return -EINVAL; } - ret = media_entity_init(&video->video.entity, 1, &video->pad, 0); + ret = media_entity_init(&video->video.entity, 1, &video->pad); if (ret < 0) return ret; diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 197f9379975395..b92366317aee03 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -134,7 +134,7 @@ struct media_entity_graph { }; int media_entity_init(struct media_entity *entity, u16 num_pads, - struct media_pad *pads, u16 extra_links); + struct media_pad *pads); void media_entity_cleanup(struct media_entity *entity); int media_entity_create_link(struct media_entity *source, u16 source_pad, -- cgit 1.2.3-korg From 21a0654200f24208aadd7bdc80fcdec65d2eb64b Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 19 Aug 2015 06:57:59 -0300 Subject: [media] Kconfig: Re-enable Media controller support for DVB This was depending on broken because we're working at the Media Controller API, with has... issues. As this got fixed, we can re-enable it. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/Kconfig | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/media/Kconfig b/drivers/media/Kconfig index 9264ea73b3be5b..a8518fb3bca76a 100644 --- a/drivers/media/Kconfig +++ b/drivers/media/Kconfig @@ -97,7 +97,6 @@ config MEDIA_CONTROLLER config MEDIA_CONTROLLER_DVB bool "Enable Media controller for DVB (EXPERIMENTAL)" depends on MEDIA_CONTROLLER - depends on BROKEN ---help--- Enable the media controller API support for DVB. -- cgit 1.2.3-korg From 20fe0319de9aca71ba45e2f93c4a2a73dabde4da Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 20 Aug 2015 06:53:10 -0300 Subject: [media] au0828: Fix the logic that enables the analog demoder link This logic was broken on the original patch, likely due to a cut-and-paste mistake. Fix it. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/au0828/au0828-video.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/media/usb/au0828/au0828-video.c b/drivers/media/usb/au0828/au0828-video.c index 57d7b9b45123cc..a1df4eb93b1486 100644 --- a/drivers/media/usb/au0828/au0828-video.c +++ b/drivers/media/usb/au0828/au0828-video.c @@ -642,7 +642,7 @@ static int au0828_enable_analog_tuner(struct au0828_dev *dev) { #ifdef CONFIG_MEDIA_CONTROLLER struct media_device *mdev = dev->media_dev; - struct media_entity *entity, *source; + struct media_entity *source; struct media_link *link, *found_link = NULL; int i, ret, active_links = 0; @@ -677,7 +677,7 @@ static int au0828_enable_analog_tuner(struct au0828_dev *dev) link = &source->links[i]; sink = link->sink->entity; - if (sink == entity) + if (sink == dev->decoder) flags = MEDIA_LNK_FL_ENABLED; ret = media_entity_setup_link(link, flags); -- cgit 1.2.3-korg From fa762394fd85c838ade769990478bc4e01fd95e8 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 14 Aug 2015 10:42:05 -0300 Subject: [media] media: create a macro to get entity ID Instead of accessing directly entity.id, let's create a macro, as this field will be moved into a common struct later on. Acked-by: Hans Verkuil Reviewed-by: Javier Martinez Canillas Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 8 ++++---- drivers/media/media-entity.c | 8 ++++---- drivers/media/platform/vsp1/vsp1_video.c | 4 ++-- include/media/media-entity.h | 5 +++++ 4 files changed, 15 insertions(+), 10 deletions(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index c55ab5029323ac..e429605ca2c37b 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -77,8 +77,8 @@ static struct media_entity *find_entity(struct media_device *mdev, u32 id) spin_lock(&mdev->lock); media_device_for_each_entity(entity, mdev) { - if ((entity->id == id && !next) || - (entity->id > id && next)) { + if (((media_entity_id(entity) == id) && !next) || + ((media_entity_id(entity) > id) && next)) { spin_unlock(&mdev->lock); return entity; } @@ -104,7 +104,7 @@ static long media_device_enum_entities(struct media_device *mdev, if (ent == NULL) return -EINVAL; - u_ent.id = ent->id; + u_ent.id = media_entity_id(ent); if (ent->name) strlcpy(u_ent.name, ent->name, sizeof(u_ent.name)); u_ent.type = ent->type; @@ -122,7 +122,7 @@ static long media_device_enum_entities(struct media_device *mdev, static void media_device_kpad_to_upad(const struct media_pad *kpad, struct media_pad_desc *upad) { - upad->entity = kpad->entity->id; + upad->entity = media_entity_id(kpad->entity); upad->index = kpad->index; upad->flags = kpad->flags; } diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index eabcbacfe387c5..0342be39cae220 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -140,10 +140,10 @@ void media_entity_graph_walk_start(struct media_entity_graph *graph, graph->stack[graph->top].entity = NULL; bitmap_zero(graph->entities, MEDIA_ENTITY_ENUM_MAX_ID); - if (WARN_ON(entity->id >= MEDIA_ENTITY_ENUM_MAX_ID)) + if (WARN_ON(media_entity_id(entity) >= MEDIA_ENTITY_ENUM_MAX_ID)) return; - __set_bit(entity->id, graph->entities); + __set_bit(media_entity_id(entity), graph->entities); stack_push(graph, entity); } EXPORT_SYMBOL_GPL(media_entity_graph_walk_start); @@ -184,11 +184,11 @@ media_entity_graph_walk_next(struct media_entity_graph *graph) /* Get the entity in the other end of the link . */ next = media_entity_other(entity, link); - if (WARN_ON(next->id >= MEDIA_ENTITY_ENUM_MAX_ID)) + if (WARN_ON(media_entity_id(next) >= MEDIA_ENTITY_ENUM_MAX_ID)) return NULL; /* Has the entity already been visited? */ - if (__test_and_set_bit(next->id, graph->entities)) { + if (__test_and_set_bit(media_entity_id(next), graph->entities)) { link_top(graph)++; continue; } diff --git a/drivers/media/platform/vsp1/vsp1_video.c b/drivers/media/platform/vsp1/vsp1_video.c index fb52683b5c2228..516595cff4083f 100644 --- a/drivers/media/platform/vsp1/vsp1_video.c +++ b/drivers/media/platform/vsp1/vsp1_video.c @@ -323,10 +323,10 @@ static int vsp1_pipeline_validate_branch(struct vsp1_pipeline *pipe, break; /* Ensure the branch has no loop. */ - if (entities & (1 << entity->subdev.entity.id)) + if (entities & (1 << media_entity_id(&entity->subdev.entity))) return -EPIPE; - entities |= 1 << entity->subdev.entity.id; + entities |= 1 << media_entity_id(&entity->subdev.entity); /* UDS can't be chained. */ if (entity->type == VSP1_ENTITY_UDS) { diff --git a/include/media/media-entity.h b/include/media/media-entity.h index b92366317aee03..57881758927e0f 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -113,6 +113,11 @@ static inline u32 media_entity_subtype(struct media_entity *entity) return entity->type & MEDIA_ENT_SUBTYPE_MASK; } +static inline u32 media_entity_id(struct media_entity *entity) +{ + return entity->id; +} + #define MEDIA_ENTITY_ENUM_MAX_DEPTH 16 #define MEDIA_ENTITY_ENUM_MAX_ID 64 -- cgit 1.2.3-korg From 1302d39c4a7e31b9844638acb45c784633015cfd Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Wed, 19 Aug 2015 12:35:19 -0300 Subject: [media] staging: omap4iss: get entity ID using media_entity_id() Accessing media_entity ID should now use media_entity_id() macro to obtain the entity ID, as a next patch will remove the .id field from struct media_entity . So, get rid of it, otherwise the omap4iss driver will fail to build. Signed-off-by: Javier Martinez Canillas Acked-by: Hans Verkuil Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/media/omap4iss/iss.c | 2 +- drivers/staging/media/omap4iss/iss_video.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/media/omap4iss/iss.c b/drivers/staging/media/omap4iss/iss.c index e27a988540a6b7..5fc3675b190f4e 100644 --- a/drivers/staging/media/omap4iss/iss.c +++ b/drivers/staging/media/omap4iss/iss.c @@ -607,7 +607,7 @@ static int iss_pipeline_disable(struct iss_pipeline *pipe, * crashed. Mark it as such, the ISS will be reset when * applications will release it. */ - iss->crashed |= 1U << subdev->entity.id; + iss->crashed |= 1U << media_entity_id(&subdev->entity); failure = -ETIMEDOUT; } } diff --git a/drivers/staging/media/omap4iss/iss_video.c b/drivers/staging/media/omap4iss/iss_video.c index 194c41ef822c99..dd8ff03912a711 100644 --- a/drivers/staging/media/omap4iss/iss_video.c +++ b/drivers/staging/media/omap4iss/iss_video.c @@ -782,7 +782,7 @@ iss_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) entity = &video->video.entity; media_entity_graph_walk_start(&graph, entity); while ((entity = media_entity_graph_walk_next(&graph))) - pipe->entities |= 1 << entity->id; + pipe->entities |= 1 << media_entity_id(entity); /* Verify that the currently configured format matches the output of * the connected subdev. -- cgit 1.2.3-korg From e0077cfdee9d249d3f85b9c7efd9e49d218093c8 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Wed, 19 Aug 2015 12:35:20 -0300 Subject: [media] omap3isp: get entity ID using media_entity_id() Accessing media_entity ID should now use media_entity_id() macro to obtain the entity ID, as a next patch will remove the .id field from struct media_entity . So, get rid of it, otherwise the omap3isp driver will fail to build. Signed-off-by: Javier Martinez Canillas Acked-by: Hans Verkuil Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/omap3isp/isp.c | 7 +++++-- drivers/media/platform/omap3isp/ispccdc.c | 2 +- drivers/media/platform/omap3isp/ispvideo.c | 8 +++++--- 3 files changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c index 56e683b19a73e3..e08183f9d0f78e 100644 --- a/drivers/media/platform/omap3isp/isp.c +++ b/drivers/media/platform/omap3isp/isp.c @@ -975,6 +975,7 @@ static int isp_pipeline_disable(struct isp_pipeline *pipe) struct v4l2_subdev *subdev; int failure = 0; int ret; + u32 id; /* * We need to stop all the modules after CCDC first or they'll @@ -1027,8 +1028,10 @@ static int isp_pipeline_disable(struct isp_pipeline *pipe) if (ret) { dev_info(isp->dev, "Unable to stop %s\n", subdev->name); isp->stop_failure = true; - if (subdev == &isp->isp_prev.subdev) - isp->crashed |= 1U << subdev->entity.id; + if (subdev == &isp->isp_prev.subdev) { + id = media_entity_id(&subdev->entity); + isp->crashed |= 1U << id; + } failure = -ETIMEDOUT; } } diff --git a/drivers/media/platform/omap3isp/ispccdc.c b/drivers/media/platform/omap3isp/ispccdc.c index 3b10304b580bd8..d96e3be5e252f0 100644 --- a/drivers/media/platform/omap3isp/ispccdc.c +++ b/drivers/media/platform/omap3isp/ispccdc.c @@ -1608,7 +1608,7 @@ static int ccdc_isr_buffer(struct isp_ccdc_device *ccdc) /* Wait for the CCDC to become idle. */ if (ccdc_sbl_wait_idle(ccdc, 1000)) { dev_info(isp->dev, "CCDC won't become idle!\n"); - isp->crashed |= 1U << ccdc->subdev.entity.id; + isp->crashed |= 1U << media_entity_id(&ccdc->subdev.entity); omap3isp_pipeline_cancel_stream(pipe); return 0; } diff --git a/drivers/media/platform/omap3isp/ispvideo.c b/drivers/media/platform/omap3isp/ispvideo.c index 963cb9318873d0..0e129075e99ffa 100644 --- a/drivers/media/platform/omap3isp/ispvideo.c +++ b/drivers/media/platform/omap3isp/ispvideo.c @@ -235,7 +235,7 @@ static int isp_video_get_graph_data(struct isp_video *video, while ((entity = media_entity_graph_walk_next(&graph))) { struct isp_video *__video; - pipe->entities |= 1 << entity->id; + pipe->entities |= 1 << media_entity_id(entity); if (far_end != NULL) continue; @@ -893,6 +893,7 @@ static int isp_video_check_external_subdevs(struct isp_video *video, struct v4l2_ext_control ctrl; unsigned int i; int ret; + u32 id; /* Memory-to-memory pipelines have no external subdev. */ if (pipe->input != NULL) @@ -900,7 +901,7 @@ static int isp_video_check_external_subdevs(struct isp_video *video, for (i = 0; i < ARRAY_SIZE(ents); i++) { /* Is the entity part of the pipeline? */ - if (!(pipe->entities & (1 << ents[i]->id))) + if (!(pipe->entities & (1 << media_entity_id(ents[i])))) continue; /* ISP entities have always sink pad == 0. Find source. */ @@ -952,7 +953,8 @@ static int isp_video_check_external_subdevs(struct isp_video *video, pipe->external_rate = ctrl.value64; - if (pipe->entities & (1 << isp->isp_ccdc.subdev.entity.id)) { + id = media_entity_id(&isp->isp_ccdc.subdev.entity); + if (pipe->entities & (1 << id)) { unsigned int rate = UINT_MAX; /* * Check that maximum allowed CCDC pixel rate isn't -- cgit 1.2.3-korg From ec6e4c950621a1d0db1e9b015ede4a3938fdfd18 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 25 Aug 2015 10:28:36 -0300 Subject: [media] media: add a common struct to be embed on media graph objects Due to the MC API proposed changes, we'll need to have an unique object ID for all graph objects, and have some shared fields that will be common on all media graph objects. Right now, the only common object is the object ID, but other fields will be added later on. Acked-by: Hans Verkuil Reviewed-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 32 +++++++++++++++++++++++ include/media/media-entity.h | 61 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 93 insertions(+) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 0342be39cae220..a76655c2ddef2b 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -26,6 +26,38 @@ #include #include +/** + * media_gobj_init - Initialize a graph object + * + * @mdev: Pointer to the media_device that contains the object + * @type: Type of the object + * @gobj: Pointer to the object + * + * This routine initializes the embedded struct media_gobj inside a + * media graph object. It is called automatically if media_*_create() + * calls are used. However, if the object (entity, link, pad, interface) + * is embedded on some other object, this function should be called before + * registering the object at the media controller. + */ +void media_gobj_init(struct media_device *mdev, + enum media_gobj_type type, + struct media_gobj *gobj) +{ + /* For now, nothing to do */ +} + +/** + * media_gobj_remove - Stop using a graph object on a media device + * + * @graph_obj: Pointer to the object + * + * This should be called at media_device_unregister_*() routines + */ +void media_gobj_remove(struct media_gobj *gobj) +{ + /* For now, nothing to do */ +} + /** * media_entity_init - Initialize a media entity * diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 57881758927e0f..96626356b8f370 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -28,6 +28,39 @@ #include #include +/* Enums used internally at the media controller to represent graphs */ + +/** + * enum media_gobj_type - type of a graph object + * + */ +enum media_gobj_type { + /* FIXME: add the types here, as we embed media_gobj */ + MEDIA_GRAPH_NONE +}; + +#define MEDIA_BITS_PER_TYPE 8 +#define MEDIA_BITS_PER_LOCAL_ID (32 - MEDIA_BITS_PER_TYPE) +#define MEDIA_LOCAL_ID_MASK GENMASK(MEDIA_BITS_PER_LOCAL_ID - 1, 0) + +/* Structs to represent the objects that belong to a media graph */ + +/** + * struct media_gobj - Define a graph object. + * + * @id: Non-zero object ID identifier. The ID should be unique + * inside a media_device, as it is composed by + * MEDIA_BITS_PER_TYPE to store the type plus + * MEDIA_BITS_PER_LOCAL_ID to store a per-type ID + * (called as "local ID"). + * + * All objects on the media graph should have this struct embedded + */ +struct media_gobj { + u32 id; +}; + + struct media_pipeline { }; @@ -118,6 +151,26 @@ static inline u32 media_entity_id(struct media_entity *entity) return entity->id; } +static inline enum media_gobj_type media_type(struct media_gobj *gobj) +{ + return gobj->id >> MEDIA_BITS_PER_LOCAL_ID; +} + +static inline u32 media_localid(struct media_gobj *gobj) +{ + return gobj->id & MEDIA_LOCAL_ID_MASK; +} + +static inline u32 media_gobj_gen_id(enum media_gobj_type type, u32 local_id) +{ + u32 id; + + id = type << MEDIA_BITS_PER_LOCAL_ID; + id |= local_id & MEDIA_LOCAL_ID_MASK; + + return id; +} + #define MEDIA_ENTITY_ENUM_MAX_DEPTH 16 #define MEDIA_ENTITY_ENUM_MAX_ID 64 @@ -138,6 +191,14 @@ struct media_entity_graph { int top; }; +#define gobj_to_entity(gobj) \ + container_of(gobj, struct media_entity, graph_obj) + +void media_gobj_init(struct media_device *mdev, + enum media_gobj_type type, + struct media_gobj *gobj); +void media_gobj_remove(struct media_gobj *gobj); + int media_entity_init(struct media_entity *entity, u16 num_pads, struct media_pad *pads); void media_entity_cleanup(struct media_entity *entity); -- cgit 1.2.3-korg From bfab2aacccfc144e2cceccb71ec89f1eff1b8c51 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 14 Aug 2015 12:47:48 -0300 Subject: [media] media: use media_gobj inside entities As entities are graph objects, let's embed media_gobj on it. That ensures an unique ID for entities that can be global along the entire media controller. For now, we'll keep the already existing entity ID. Such field need to be dropped at some point, but for now, let's not do this, to avoid needing to review all drivers and the userspace apps. Acked-by: Hans Verkuil Tested-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 8 +++----- drivers/media/media-entity.c | 7 ++++++- include/media/media-device.h | 3 ++- include/media/media-entity.h | 9 ++++----- 4 files changed, 15 insertions(+), 12 deletions(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index e429605ca2c37b..81d6a130efef57 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -379,7 +379,6 @@ int __must_check __media_device_register(struct media_device *mdev, if (WARN_ON(mdev->dev == NULL || mdev->model[0] == 0)) return -EINVAL; - mdev->entity_id = 1; INIT_LIST_HEAD(&mdev->entities); spin_lock_init(&mdev->lock); mutex_init(&mdev->graph_mutex); @@ -433,10 +432,8 @@ int __must_check media_device_register_entity(struct media_device *mdev, entity->parent = mdev; spin_lock(&mdev->lock); - if (entity->id == 0) - entity->id = mdev->entity_id++; - else - mdev->entity_id = max(entity->id + 1, mdev->entity_id); + /* Initialize media_gobj embedded at the entity */ + media_gobj_init(mdev, MEDIA_GRAPH_ENTITY, &entity->graph_obj); list_add_tail(&entity->list, &mdev->entities); spin_unlock(&mdev->lock); @@ -459,6 +456,7 @@ void media_device_unregister_entity(struct media_entity *entity) return; spin_lock(&mdev->lock); + media_gobj_remove(&entity->graph_obj); list_del(&entity->list); spin_unlock(&mdev->lock); entity->parent = NULL; diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index a76655c2ddef2b..9f6f056eaeb010 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -43,7 +43,12 @@ void media_gobj_init(struct media_device *mdev, enum media_gobj_type type, struct media_gobj *gobj) { - /* For now, nothing to do */ + /* Create a per-type unique object ID */ + switch (type) { + case MEDIA_GRAPH_ENTITY: + gobj->id = media_gobj_gen_id(type, ++mdev->entity_id); + break; + } } /** diff --git a/include/media/media-device.h b/include/media/media-device.h index a44f18fdf321d8..f6deef6e58206e 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -41,7 +41,7 @@ struct device; * @bus_info: Unique and stable device location identifier * @hw_revision: Hardware device revision * @driver_version: Device driver version - * @entity_id: ID of the next entity to be registered + * @entity_id: Unique ID used on the last entity registered * @entities: List of registered entities * @lock: Entities list lock * @graph_mutex: Entities graph operation lock @@ -69,6 +69,7 @@ struct media_device { u32 driver_version; u32 entity_id; + struct list_head entities; /* Protects the entities list */ diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 96626356b8f370..4faa4d830da4b0 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -33,10 +33,10 @@ /** * enum media_gobj_type - type of a graph object * + * @MEDIA_GRAPH_ENTITY: Identify a media entity */ enum media_gobj_type { - /* FIXME: add the types here, as we embed media_gobj */ - MEDIA_GRAPH_NONE + MEDIA_GRAPH_ENTITY, }; #define MEDIA_BITS_PER_TYPE 8 @@ -94,10 +94,9 @@ struct media_entity_operations { }; struct media_entity { + struct media_gobj graph_obj; struct list_head list; struct media_device *parent; /* Media device this entity belongs to*/ - u32 id; /* Entity ID, unique in the parent media - * device context */ const char *name; /* Entity name */ u32 type; /* Entity type (MEDIA_ENT_T_*) */ u32 revision; /* Entity revision, driver specific */ @@ -148,7 +147,7 @@ static inline u32 media_entity_subtype(struct media_entity *entity) static inline u32 media_entity_id(struct media_entity *entity) { - return entity->id; + return entity->graph_obj.id; } static inline enum media_gobj_type media_type(struct media_gobj *gobj) -- cgit 1.2.3-korg From 18710dc67a433ed2c3ecaaffefd8e34502e53262 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 14 Aug 2015 12:50:08 -0300 Subject: [media] media: use media_gobj inside pads PADs also need unique object IDs that won't conflict with the entity object IDs. The pad objects are currently created via media_entity_init() and, once created, never change. While this will likely change in the future in order to support dynamic changes, for now we'll keep PADs as arrays and initialize the media_gobj embedded structs when registering the entity. Acked-by: Hans Verkuil Tested-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 11 +++++++++++ drivers/media/media-entity.c | 3 +++ include/media/media-device.h | 2 ++ include/media/media-entity.h | 3 +++ 4 files changed, 19 insertions(+) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 81d6a130efef57..3bdda16584fe95 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -427,6 +427,8 @@ EXPORT_SYMBOL_GPL(media_device_unregister); int __must_check media_device_register_entity(struct media_device *mdev, struct media_entity *entity) { + int i; + /* Warn if we apparently re-register an entity */ WARN_ON(entity->parent != NULL); entity->parent = mdev; @@ -435,6 +437,12 @@ int __must_check media_device_register_entity(struct media_device *mdev, /* Initialize media_gobj embedded at the entity */ media_gobj_init(mdev, MEDIA_GRAPH_ENTITY, &entity->graph_obj); list_add_tail(&entity->list, &mdev->entities); + + /* Initialize objects at the pads */ + for (i = 0; i < entity->num_pads; i++) + media_gobj_init(mdev, MEDIA_GRAPH_PAD, + &entity->pads[i].graph_obj); + spin_unlock(&mdev->lock); return 0; @@ -450,12 +458,15 @@ EXPORT_SYMBOL_GPL(media_device_register_entity); */ void media_device_unregister_entity(struct media_entity *entity) { + int i; struct media_device *mdev = entity->parent; if (mdev == NULL) return; spin_lock(&mdev->lock); + for (i = 0; i < entity->num_pads; i++) + media_gobj_remove(&entity->pads[i].graph_obj); media_gobj_remove(&entity->graph_obj); list_del(&entity->list); spin_unlock(&mdev->lock); diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 9f6f056eaeb010..2d94c859057b2b 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -48,6 +48,9 @@ void media_gobj_init(struct media_device *mdev, case MEDIA_GRAPH_ENTITY: gobj->id = media_gobj_gen_id(type, ++mdev->entity_id); break; + case MEDIA_GRAPH_PAD: + gobj->id = media_gobj_gen_id(type, ++mdev->pad_id); + break; } } diff --git a/include/media/media-device.h b/include/media/media-device.h index f6deef6e58206e..9493721f630ecf 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -42,6 +42,7 @@ struct device; * @hw_revision: Hardware device revision * @driver_version: Device driver version * @entity_id: Unique ID used on the last entity registered + * @pad_id: Unique ID used on the last pad registered * @entities: List of registered entities * @lock: Entities list lock * @graph_mutex: Entities graph operation lock @@ -69,6 +70,7 @@ struct media_device { u32 driver_version; u32 entity_id; + u32 pad_id; struct list_head entities; diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 4faa4d830da4b0..b91c78d34f79b0 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -34,9 +34,11 @@ * enum media_gobj_type - type of a graph object * * @MEDIA_GRAPH_ENTITY: Identify a media entity + * @MEDIA_GRAPH_PAD: Identify a media pad */ enum media_gobj_type { MEDIA_GRAPH_ENTITY, + MEDIA_GRAPH_PAD, }; #define MEDIA_BITS_PER_TYPE 8 @@ -72,6 +74,7 @@ struct media_link { }; struct media_pad { + struct media_gobj graph_obj; struct media_entity *entity; /* Entity this pad belongs to */ u16 index; /* Pad index in the entity pads array */ unsigned long flags; /* Pad flags (MEDIA_PAD_FL_*) */ -- cgit 1.2.3-korg From 6b6a42780597028135f82c96e42c6d2bcd83fbae Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 14 Aug 2015 12:54:36 -0300 Subject: [media] media: use media_gobj inside links Just like entities and pads, links also need to have unique Object IDs along a given media controller. So, let's add a media_gobj inside it and initialize the object then a new link is created. Acked-by: Hans Verkuil Tested-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 9 +++++++++ drivers/media/media-entity.c | 9 +++++++++ include/media/media-device.h | 2 ++ include/media/media-entity.h | 3 +++ 4 files changed, 23 insertions(+) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 3bdda16584fe95..065f6f08da3703 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -438,6 +438,13 @@ int __must_check media_device_register_entity(struct media_device *mdev, media_gobj_init(mdev, MEDIA_GRAPH_ENTITY, &entity->graph_obj); list_add_tail(&entity->list, &mdev->entities); + /* + * Initialize objects at the links + * in the case where links got created before entity register + */ + for (i = 0; i < entity->num_links; i++) + media_gobj_init(mdev, MEDIA_GRAPH_LINK, + &entity->links[i].graph_obj); /* Initialize objects at the pads */ for (i = 0; i < entity->num_pads; i++) media_gobj_init(mdev, MEDIA_GRAPH_PAD, @@ -465,6 +472,8 @@ void media_device_unregister_entity(struct media_entity *entity) return; spin_lock(&mdev->lock); + for (i = 0; i < entity->num_links; i++) + media_gobj_remove(&entity->links[i].graph_obj); for (i = 0; i < entity->num_pads; i++) media_gobj_remove(&entity->pads[i].graph_obj); media_gobj_remove(&entity->graph_obj); diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 2d94c859057b2b..63fd293a3fb884 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -51,6 +51,9 @@ void media_gobj_init(struct media_device *mdev, case MEDIA_GRAPH_PAD: gobj->id = media_gobj_gen_id(type, ++mdev->pad_id); break; + case MEDIA_GRAPH_LINK: + gobj->id = media_gobj_gen_id(type, ++mdev->link_id); + break; } } @@ -491,6 +494,9 @@ media_entity_create_link(struct media_entity *source, u16 source_pad, link->sink = &sink->pads[sink_pad]; link->flags = flags; + /* Initialize graph object embedded at the new link */ + media_gobj_init(source->parent, MEDIA_GRAPH_LINK, &link->graph_obj); + /* Create the backlink. Backlinks are used to help graph traversal and * are not reported to userspace. */ @@ -504,6 +510,9 @@ media_entity_create_link(struct media_entity *source, u16 source_pad, backlink->sink = &sink->pads[sink_pad]; backlink->flags = flags; + /* Initialize graph object embedded at the new link */ + media_gobj_init(sink->parent, MEDIA_GRAPH_LINK, &backlink->graph_obj); + link->reverse = backlink; backlink->reverse = link; diff --git a/include/media/media-device.h b/include/media/media-device.h index 9493721f630ecf..05414e351f8e37 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -43,6 +43,7 @@ struct device; * @driver_version: Device driver version * @entity_id: Unique ID used on the last entity registered * @pad_id: Unique ID used on the last pad registered + * @link_id: Unique ID used on the last link registered * @entities: List of registered entities * @lock: Entities list lock * @graph_mutex: Entities graph operation lock @@ -71,6 +72,7 @@ struct media_device { u32 entity_id; u32 pad_id; + u32 link_id; struct list_head entities; diff --git a/include/media/media-entity.h b/include/media/media-entity.h index b91c78d34f79b0..bf93c90e921882 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -35,10 +35,12 @@ * * @MEDIA_GRAPH_ENTITY: Identify a media entity * @MEDIA_GRAPH_PAD: Identify a media pad + * @MEDIA_GRAPH_LINK: Identify a media link */ enum media_gobj_type { MEDIA_GRAPH_ENTITY, MEDIA_GRAPH_PAD, + MEDIA_GRAPH_LINK, }; #define MEDIA_BITS_PER_TYPE 8 @@ -67,6 +69,7 @@ struct media_pipeline { }; struct media_link { + struct media_gobj graph_obj; struct media_pad *source; /* Source pad */ struct media_pad *sink; /* Sink pad */ struct media_link *reverse; /* Link in the reverse direction */ -- cgit 1.2.3-korg From 8f5a3188fbd13fdd5525fc6177cb19bf3996ee99 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 13 Aug 2015 15:22:24 -0300 Subject: [media] media: add messages when media device gets (un)registered We can only free the media device after being sure that no graph object is used. In order to help tracking it, let's add debug messages that will print when the media controller gets registered or unregistered. Acked-by: Hans Verkuil Reviewed-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 065f6f08da3703..0f3844470147e5 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -359,6 +359,7 @@ static DEVICE_ATTR(model, S_IRUGO, show_model, NULL); static void media_device_release(struct media_devnode *mdev) { + dev_dbg(mdev->parent, "Media device released\n"); } /** @@ -397,6 +398,8 @@ int __must_check __media_device_register(struct media_device *mdev, return ret; } + dev_dbg(mdev->dev, "Media device registered\n"); + return 0; } EXPORT_SYMBOL_GPL(__media_device_register); @@ -416,6 +419,8 @@ void media_device_unregister(struct media_device *mdev) device_remove_file(&mdev->devnode.dev, &dev_attr_model); media_devnode_unregister(&mdev->devnode); + + dev_dbg(mdev->dev, "Media device unregistered\n"); } EXPORT_SYMBOL_GPL(media_device_unregister); -- cgit 1.2.3-korg From 39a956c4147e4f696f729916f677673e9a9dc7ab Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 13 Aug 2015 14:42:42 -0300 Subject: [media] media: add a debug message to warn about gobj creation/removal It helps to check if the media controller is doing the right thing with the object creation and removal. No extra code/data will be produced if DEBUG or CONFIG_DYNAMIC_DEBUG is not enabled. Acked-by: Hans Verkuil Reviewed-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 68 +++++++++++++++++++++++++++++++++++++++++++- include/media/media-entity.h | 7 +++++ 2 files changed, 74 insertions(+), 1 deletion(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 63fd293a3fb884..f5b4822a324fbf 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -26,6 +26,69 @@ #include #include +/** + * dev_dbg_obj - Prints in debug mode a change on some object + * + * @event_name: Name of the event to report. Could be __func__ + * @gobj: Pointer to the object + * + * Enabled only if DEBUG or CONFIG_DYNAMIC_DEBUG. Otherwise, it + * won't produce any code. + */ +static inline const char *gobj_type(enum media_gobj_type type) +{ + switch (type) { + case MEDIA_GRAPH_ENTITY: + return "entity"; + case MEDIA_GRAPH_PAD: + return "pad"; + case MEDIA_GRAPH_LINK: + return "link"; + default: + return "unknown"; + } +} + +static void dev_dbg_obj(const char *event_name, struct media_gobj *gobj) +{ +#if defined(DEBUG) || defined (CONFIG_DYNAMIC_DEBUG) + switch (media_type(gobj)) { + case MEDIA_GRAPH_ENTITY: + dev_dbg(gobj->mdev->dev, + "%s: id 0x%08x entity#%d: '%s'\n", + event_name, gobj->id, media_localid(gobj), + gobj_to_entity(gobj)->name); + break; + case MEDIA_GRAPH_LINK: + { + struct media_link *link = gobj_to_link(gobj); + + dev_dbg(gobj->mdev->dev, + "%s: id 0x%08x link#%d: '%s' %s#%d ==> '%s' %s#%d\n", + event_name, gobj->id, media_localid(gobj), + + link->source->entity->name, + gobj_type(media_type(&link->source->graph_obj)), + media_localid(&link->source->graph_obj), + + link->sink->entity->name, + gobj_type(media_type(&link->sink->graph_obj)), + media_localid(&link->sink->graph_obj)); + break; + } + case MEDIA_GRAPH_PAD: + { + struct media_pad *pad = gobj_to_pad(gobj); + + dev_dbg(gobj->mdev->dev, + "%s: id 0x%08x pad#%d: '%s':%d\n", + event_name, gobj->id, media_localid(gobj), + pad->entity->name, pad->index); + } + } +#endif +} + /** * media_gobj_init - Initialize a graph object * @@ -43,6 +106,8 @@ void media_gobj_init(struct media_device *mdev, enum media_gobj_type type, struct media_gobj *gobj) { + gobj->mdev = mdev; + /* Create a per-type unique object ID */ switch (type) { case MEDIA_GRAPH_ENTITY: @@ -55,6 +120,7 @@ void media_gobj_init(struct media_device *mdev, gobj->id = media_gobj_gen_id(type, ++mdev->link_id); break; } + dev_dbg_obj(__func__, gobj); } /** @@ -66,7 +132,7 @@ void media_gobj_init(struct media_device *mdev, */ void media_gobj_remove(struct media_gobj *gobj) { - /* For now, nothing to do */ + dev_dbg_obj(__func__, gobj); } /** diff --git a/include/media/media-entity.h b/include/media/media-entity.h index bf93c90e921882..96a5d3e6f6f43e 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -61,6 +61,7 @@ enum media_gobj_type { * All objects on the media graph should have this struct embedded */ struct media_gobj { + struct media_device *mdev; u32 id; }; @@ -199,6 +200,12 @@ struct media_entity_graph { #define gobj_to_entity(gobj) \ container_of(gobj, struct media_entity, graph_obj) +#define gobj_to_pad(gobj) \ + container_of(gobj, struct media_pad, graph_obj) + +#define gobj_to_link(gobj) \ + container_of(gobj, struct media_link, graph_obj) + void media_gobj_init(struct media_device *mdev, enum media_gobj_type type, struct media_gobj *gobj); -- cgit 1.2.3-korg From 8df00a15817e3a252510ac914870214859325189 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 7 Aug 2015 08:14:38 -0300 Subject: [media] media: rename the function that create pad links With the new API, a link can be either between two PADs or between an interface and an entity. So, we need to use a better name for the function that create links between two pads. So, rename the such function to media_create_pad_link(). No functional changes. This patch was created via this shell script: for i in $(find drivers/media -name '*.[ch]' -type f) $(find drivers/staging/media -name '*.[ch]' -type f) $(find include/ -name '*.h' -type f) ; do sed s,media_entity_create_link,media_create_pad_link,g <$i >a && mv a $i; done Acked-by: Hans Verkuil Tested-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- Documentation/media-framework.txt | 2 +- drivers/media/dvb-core/dvbdev.c | 8 ++++---- drivers/media/i2c/s5c73m3/s5c73m3-core.c | 4 ++-- drivers/media/i2c/s5k5baf.c | 2 +- drivers/media/i2c/smiapp/smiapp-core.c | 4 ++-- drivers/media/media-entity.c | 4 ++-- drivers/media/platform/exynos4-is/media-dev.c | 16 ++++++++-------- drivers/media/platform/omap3isp/isp.c | 18 +++++++++--------- drivers/media/platform/omap3isp/ispccdc.c | 2 +- drivers/media/platform/omap3isp/ispccp2.c | 2 +- drivers/media/platform/omap3isp/ispcsi2.c | 2 +- drivers/media/platform/omap3isp/isppreview.c | 4 ++-- drivers/media/platform/omap3isp/ispresizer.c | 4 ++-- drivers/media/platform/s3c-camif/camif-core.c | 4 ++-- drivers/media/platform/vsp1/vsp1_drv.c | 4 ++-- drivers/media/platform/vsp1/vsp1_rpf.c | 2 +- drivers/media/platform/vsp1/vsp1_wpf.c | 2 +- drivers/media/platform/xilinx/xilinx-vipp.c | 4 ++-- drivers/media/usb/au0828/au0828-core.c | 6 +++--- drivers/media/usb/cx231xx/cx231xx-cards.c | 6 +++--- drivers/media/usb/uvc/uvc_entity.c | 2 +- drivers/staging/media/davinci_vpfe/dm365_ipipeif.c | 2 +- drivers/staging/media/davinci_vpfe/dm365_isif.c | 2 +- drivers/staging/media/davinci_vpfe/dm365_resizer.c | 8 ++++---- drivers/staging/media/davinci_vpfe/vpfe_mc_capture.c | 10 +++++----- drivers/staging/media/omap4iss/iss.c | 12 ++++++------ drivers/staging/media/omap4iss/iss_csi2.c | 2 +- drivers/staging/media/omap4iss/iss_ipipeif.c | 2 +- drivers/staging/media/omap4iss/iss_resizer.c | 2 +- include/media/media-entity.h | 2 +- 30 files changed, 72 insertions(+), 72 deletions(-) diff --git a/Documentation/media-framework.txt b/Documentation/media-framework.txt index 6903b25035774f..b424de6c3bb330 100644 --- a/Documentation/media-framework.txt +++ b/Documentation/media-framework.txt @@ -199,7 +199,7 @@ pre-allocated and grows dynamically as needed. Drivers create links by calling - media_entity_create_link(struct media_entity *source, u16 source_pad, + media_create_pad_link(struct media_entity *source, u16 source_pad, struct media_entity *sink, u16 sink_pad, u32 flags); diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index 2fdcbb5f000a95..65f59f2124b460 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -412,16 +412,16 @@ void dvb_create_media_graph(struct dvb_adapter *adap) } if (tuner && fe) - media_entity_create_link(tuner, 0, fe, 0, 0); + media_create_pad_link(tuner, 0, fe, 0, 0); if (fe && demux) - media_entity_create_link(fe, 1, demux, 0, MEDIA_LNK_FL_ENABLED); + media_create_pad_link(fe, 1, demux, 0, MEDIA_LNK_FL_ENABLED); if (demux && dvr) - media_entity_create_link(demux, 1, dvr, 0, MEDIA_LNK_FL_ENABLED); + media_create_pad_link(demux, 1, dvr, 0, MEDIA_LNK_FL_ENABLED); if (demux && ca) - media_entity_create_link(demux, 1, ca, 0, MEDIA_LNK_FL_ENABLED); + media_create_pad_link(demux, 1, ca, 0, MEDIA_LNK_FL_ENABLED); } EXPORT_SYMBOL_GPL(dvb_create_media_graph); #endif diff --git a/drivers/media/i2c/s5c73m3/s5c73m3-core.c b/drivers/media/i2c/s5c73m3/s5c73m3-core.c index 381f903831f470..45c823b68f489b 100644 --- a/drivers/media/i2c/s5c73m3/s5c73m3-core.c +++ b/drivers/media/i2c/s5c73m3/s5c73m3-core.c @@ -1482,11 +1482,11 @@ static int s5c73m3_oif_registered(struct v4l2_subdev *sd) return ret; } - ret = media_entity_create_link(&state->sensor_sd.entity, + ret = media_create_pad_link(&state->sensor_sd.entity, S5C73M3_ISP_PAD, &state->oif_sd.entity, OIF_ISP_PAD, MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED); - ret = media_entity_create_link(&state->sensor_sd.entity, + ret = media_create_pad_link(&state->sensor_sd.entity, S5C73M3_JPEG_PAD, &state->oif_sd.entity, OIF_JPEG_PAD, MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED); diff --git a/drivers/media/i2c/s5k5baf.c b/drivers/media/i2c/s5k5baf.c index 30a9ca62e034dc..d3bff30bcb6f8a 100644 --- a/drivers/media/i2c/s5k5baf.c +++ b/drivers/media/i2c/s5k5baf.c @@ -1756,7 +1756,7 @@ static int s5k5baf_registered(struct v4l2_subdev *sd) v4l2_err(sd, "failed to register subdev %s\n", state->cis_sd.name); else - ret = media_entity_create_link(&state->cis_sd.entity, PAD_CIS, + ret = media_create_pad_link(&state->cis_sd.entity, PAD_CIS, &state->sd.entity, PAD_CIS, MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED); diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c index 7ed0538ea8db2a..cf0cd507c2d0c3 100644 --- a/drivers/media/i2c/smiapp/smiapp-core.c +++ b/drivers/media/i2c/smiapp/smiapp-core.c @@ -2495,7 +2495,7 @@ static int smiapp_register_subdevs(struct smiapp_sensor *sensor) return rval; } - rval = media_entity_create_link(&this->sd.entity, + rval = media_create_pad_link(&this->sd.entity, this->source_pad, &last->sd.entity, last->sink_pad, @@ -2503,7 +2503,7 @@ static int smiapp_register_subdevs(struct smiapp_sensor *sensor) MEDIA_LNK_FL_IMMUTABLE); if (rval) { dev_err(&client->dev, - "media_entity_create_link failed\n"); + "media_create_pad_link failed\n"); return rval; } diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index f5b4822a324fbf..e840da0325b71c 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -542,7 +542,7 @@ static struct media_link *media_entity_add_link(struct media_entity *entity) } int -media_entity_create_link(struct media_entity *source, u16 source_pad, +media_create_pad_link(struct media_entity *source, u16 source_pad, struct media_entity *sink, u16 sink_pad, u32 flags) { struct media_link *link; @@ -586,7 +586,7 @@ media_entity_create_link(struct media_entity *source, u16 source_pad, return 0; } -EXPORT_SYMBOL_GPL(media_entity_create_link); +EXPORT_SYMBOL_GPL(media_create_pad_link); void __media_entity_remove_links(struct media_entity *entity) { diff --git a/drivers/media/platform/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c index 9481ce3201a2c0..4c524a02c59c65 100644 --- a/drivers/media/platform/exynos4-is/media-dev.c +++ b/drivers/media/platform/exynos4-is/media-dev.c @@ -729,7 +729,7 @@ static int __fimc_md_create_fimc_sink_links(struct fimc_md *fmd, flags = ((1 << i) & link_mask) ? MEDIA_LNK_FL_ENABLED : 0; sink = &fmd->fimc[i]->vid_cap.subdev.entity; - ret = media_entity_create_link(source, pad, sink, + ret = media_create_pad_link(source, pad, sink, FIMC_SD_PAD_SINK_CAM, flags); if (ret) return ret; @@ -749,7 +749,7 @@ static int __fimc_md_create_fimc_sink_links(struct fimc_md *fmd, continue; sink = &fmd->fimc_lite[i]->subdev.entity; - ret = media_entity_create_link(source, pad, sink, + ret = media_create_pad_link(source, pad, sink, FLITE_SD_PAD_SINK, 0); if (ret) return ret; @@ -781,13 +781,13 @@ static int __fimc_md_create_flite_source_links(struct fimc_md *fmd) source = &fimc->subdev.entity; sink = &fimc->ve.vdev.entity; /* FIMC-LITE's subdev and video node */ - ret = media_entity_create_link(source, FLITE_SD_PAD_SOURCE_DMA, + ret = media_create_pad_link(source, FLITE_SD_PAD_SOURCE_DMA, sink, 0, 0); if (ret) break; /* Link from FIMC-LITE to IS-ISP subdev */ sink = &fmd->fimc_is->isp.subdev.entity; - ret = media_entity_create_link(source, FLITE_SD_PAD_SOURCE_ISP, + ret = media_create_pad_link(source, FLITE_SD_PAD_SOURCE_ISP, sink, 0, 0); if (ret) break; @@ -811,7 +811,7 @@ static int __fimc_md_create_fimc_is_links(struct fimc_md *fmd) /* Link from FIMC-IS-ISP subdev to FIMC */ sink = &fmd->fimc[i]->vid_cap.subdev.entity; - ret = media_entity_create_link(source, FIMC_ISP_SD_PAD_SRC_FIFO, + ret = media_create_pad_link(source, FIMC_ISP_SD_PAD_SRC_FIFO, sink, FIMC_SD_PAD_SINK_FIFO, 0); if (ret) return ret; @@ -824,7 +824,7 @@ static int __fimc_md_create_fimc_is_links(struct fimc_md *fmd) if (sink->num_pads == 0) return 0; - return media_entity_create_link(source, FIMC_ISP_SD_PAD_SRC_DMA, + return media_create_pad_link(source, FIMC_ISP_SD_PAD_SRC_DMA, sink, 0, 0); } @@ -873,7 +873,7 @@ static int fimc_md_create_links(struct fimc_md *fmd) return -EINVAL; pad = sensor->entity.num_pads - 1; - ret = media_entity_create_link(&sensor->entity, pad, + ret = media_create_pad_link(&sensor->entity, pad, &csis->entity, CSIS_PAD_SINK, MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED); @@ -927,7 +927,7 @@ static int fimc_md_create_links(struct fimc_md *fmd) source = &fmd->fimc[i]->vid_cap.subdev.entity; sink = &fmd->fimc[i]->vid_cap.ve.vdev.entity; - ret = media_entity_create_link(source, FIMC_SD_PAD_SOURCE, + ret = media_create_pad_link(source, FIMC_SD_PAD_SOURCE, sink, 0, flags); if (ret) break; diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c index e08183f9d0f78e..6351f35b0a6565 100644 --- a/drivers/media/platform/omap3isp/isp.c +++ b/drivers/media/platform/omap3isp/isp.c @@ -1865,7 +1865,7 @@ static int isp_link_entity( return -EINVAL; } - return media_entity_create_link(entity, i, input, pad, flags); + return media_create_pad_link(entity, i, input, pad, flags); } static int isp_register_entities(struct isp_device *isp) @@ -2004,51 +2004,51 @@ static int isp_initialize_modules(struct isp_device *isp) } /* Connect the submodules. */ - ret = media_entity_create_link( + ret = media_create_pad_link( &isp->isp_csi2a.subdev.entity, CSI2_PAD_SOURCE, &isp->isp_ccdc.subdev.entity, CCDC_PAD_SINK, 0); if (ret < 0) goto error_link; - ret = media_entity_create_link( + ret = media_create_pad_link( &isp->isp_ccp2.subdev.entity, CCP2_PAD_SOURCE, &isp->isp_ccdc.subdev.entity, CCDC_PAD_SINK, 0); if (ret < 0) goto error_link; - ret = media_entity_create_link( + ret = media_create_pad_link( &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP, &isp->isp_prev.subdev.entity, PREV_PAD_SINK, 0); if (ret < 0) goto error_link; - ret = media_entity_create_link( + ret = media_create_pad_link( &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_OF, &isp->isp_res.subdev.entity, RESZ_PAD_SINK, 0); if (ret < 0) goto error_link; - ret = media_entity_create_link( + ret = media_create_pad_link( &isp->isp_prev.subdev.entity, PREV_PAD_SOURCE, &isp->isp_res.subdev.entity, RESZ_PAD_SINK, 0); if (ret < 0) goto error_link; - ret = media_entity_create_link( + ret = media_create_pad_link( &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP, &isp->isp_aewb.subdev.entity, 0, MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE); if (ret < 0) goto error_link; - ret = media_entity_create_link( + ret = media_create_pad_link( &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP, &isp->isp_af.subdev.entity, 0, MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE); if (ret < 0) goto error_link; - ret = media_entity_create_link( + ret = media_create_pad_link( &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP, &isp->isp_hist.subdev.entity, 0, MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE); diff --git a/drivers/media/platform/omap3isp/ispccdc.c b/drivers/media/platform/omap3isp/ispccdc.c index d96e3be5e252f0..27555e4f4aa82d 100644 --- a/drivers/media/platform/omap3isp/ispccdc.c +++ b/drivers/media/platform/omap3isp/ispccdc.c @@ -2667,7 +2667,7 @@ static int ccdc_init_entities(struct isp_ccdc_device *ccdc) goto error_video; /* Connect the CCDC subdev to the video node. */ - ret = media_entity_create_link(&ccdc->subdev.entity, CCDC_PAD_SOURCE_OF, + ret = media_create_pad_link(&ccdc->subdev.entity, CCDC_PAD_SOURCE_OF, &ccdc->video_out.video.entity, 0, 0); if (ret < 0) goto error_link; diff --git a/drivers/media/platform/omap3isp/ispccp2.c b/drivers/media/platform/omap3isp/ispccp2.c index e1b5f5bea541fb..b215eb5049d65a 100644 --- a/drivers/media/platform/omap3isp/ispccp2.c +++ b/drivers/media/platform/omap3isp/ispccp2.c @@ -1100,7 +1100,7 @@ static int ccp2_init_entities(struct isp_ccp2_device *ccp2) goto error_video; /* Connect the video node to the ccp2 subdev. */ - ret = media_entity_create_link(&ccp2->video_in.video.entity, 0, + ret = media_create_pad_link(&ccp2->video_in.video.entity, 0, &ccp2->subdev.entity, CCP2_PAD_SINK, 0); if (ret < 0) goto error_link; diff --git a/drivers/media/platform/omap3isp/ispcsi2.c b/drivers/media/platform/omap3isp/ispcsi2.c index 6fff92f0813a03..fcefc1e74881f6 100644 --- a/drivers/media/platform/omap3isp/ispcsi2.c +++ b/drivers/media/platform/omap3isp/ispcsi2.c @@ -1265,7 +1265,7 @@ static int csi2_init_entities(struct isp_csi2_device *csi2) goto error_video; /* Connect the CSI2 subdev to the video node. */ - ret = media_entity_create_link(&csi2->subdev.entity, CSI2_PAD_SOURCE, + ret = media_create_pad_link(&csi2->subdev.entity, CSI2_PAD_SOURCE, &csi2->video_out.video.entity, 0, 0); if (ret < 0) goto error_link; diff --git a/drivers/media/platform/omap3isp/isppreview.c b/drivers/media/platform/omap3isp/isppreview.c index b440c6342ca496..ad38d20c777025 100644 --- a/drivers/media/platform/omap3isp/isppreview.c +++ b/drivers/media/platform/omap3isp/isppreview.c @@ -2312,12 +2312,12 @@ static int preview_init_entities(struct isp_prev_device *prev) goto error_video_out; /* Connect the video nodes to the previewer subdev. */ - ret = media_entity_create_link(&prev->video_in.video.entity, 0, + ret = media_create_pad_link(&prev->video_in.video.entity, 0, &prev->subdev.entity, PREV_PAD_SINK, 0); if (ret < 0) goto error_link; - ret = media_entity_create_link(&prev->subdev.entity, PREV_PAD_SOURCE, + ret = media_create_pad_link(&prev->subdev.entity, PREV_PAD_SOURCE, &prev->video_out.video.entity, 0, 0); if (ret < 0) goto error_link; diff --git a/drivers/media/platform/omap3isp/ispresizer.c b/drivers/media/platform/omap3isp/ispresizer.c index 3deb1ec4a973a2..b48ad4d4b83491 100644 --- a/drivers/media/platform/omap3isp/ispresizer.c +++ b/drivers/media/platform/omap3isp/ispresizer.c @@ -1756,12 +1756,12 @@ static int resizer_init_entities(struct isp_res_device *res) res->video_out.video.entity.flags |= MEDIA_ENT_FL_DEFAULT; /* Connect the video nodes to the resizer subdev. */ - ret = media_entity_create_link(&res->video_in.video.entity, 0, + ret = media_create_pad_link(&res->video_in.video.entity, 0, &res->subdev.entity, RESZ_PAD_SINK, 0); if (ret < 0) goto error_link; - ret = media_entity_create_link(&res->subdev.entity, RESZ_PAD_SOURCE, + ret = media_create_pad_link(&res->subdev.entity, RESZ_PAD_SOURCE, &res->video_out.video.entity, 0, 0); if (ret < 0) goto error_link; diff --git a/drivers/media/platform/s3c-camif/camif-core.c b/drivers/media/platform/s3c-camif/camif-core.c index 1ba9bb08f5da2a..8649d4c0e90d5d 100644 --- a/drivers/media/platform/s3c-camif/camif-core.c +++ b/drivers/media/platform/s3c-camif/camif-core.c @@ -263,7 +263,7 @@ static int camif_create_media_links(struct camif_dev *camif) { int i, ret; - ret = media_entity_create_link(&camif->sensor.sd->entity, 0, + ret = media_create_pad_link(&camif->sensor.sd->entity, 0, &camif->subdev.entity, CAMIF_SD_PAD_SINK, MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED); @@ -271,7 +271,7 @@ static int camif_create_media_links(struct camif_dev *camif) return ret; for (i = 1; i < CAMIF_SD_PADS_NUM && !ret; i++) { - ret = media_entity_create_link(&camif->subdev.entity, i, + ret = media_create_pad_link(&camif->subdev.entity, i, &camif->vp[i - 1].vdev.entity, 0, MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED); diff --git a/drivers/media/platform/vsp1/vsp1_drv.c b/drivers/media/platform/vsp1/vsp1_drv.c index 4e61886384e329..9cd94a76a9ed2b 100644 --- a/drivers/media/platform/vsp1/vsp1_drv.c +++ b/drivers/media/platform/vsp1/vsp1_drv.c @@ -101,7 +101,7 @@ static int vsp1_create_links(struct vsp1_device *vsp1, struct vsp1_entity *sink) if (!(entity->pads[pad].flags & MEDIA_PAD_FL_SINK)) continue; - ret = media_entity_create_link(&source->subdev.entity, + ret = media_create_pad_link(&source->subdev.entity, source->source_pad, entity, pad, flags); if (ret < 0) @@ -262,7 +262,7 @@ static int vsp1_create_entities(struct vsp1_device *vsp1) } if (vsp1->pdata.features & VSP1_HAS_LIF) { - ret = media_entity_create_link( + ret = media_create_pad_link( &vsp1->wpf[0]->entity.subdev.entity, RWPF_PAD_SOURCE, &vsp1->lif->entity.subdev.entity, LIF_PAD_SINK, 0); if (ret < 0) diff --git a/drivers/media/platform/vsp1/vsp1_rpf.c b/drivers/media/platform/vsp1/vsp1_rpf.c index cd5248a9a27116..1bd51d22ff0446 100644 --- a/drivers/media/platform/vsp1/vsp1_rpf.c +++ b/drivers/media/platform/vsp1/vsp1_rpf.c @@ -278,7 +278,7 @@ struct vsp1_rwpf *vsp1_rpf_create(struct vsp1_device *vsp1, unsigned int index) rpf->entity.video = video; /* Connect the video device to the RPF. */ - ret = media_entity_create_link(&rpf->video.video.entity, 0, + ret = media_create_pad_link(&rpf->video.video.entity, 0, &rpf->entity.subdev.entity, RWPF_PAD_SINK, MEDIA_LNK_FL_ENABLED | diff --git a/drivers/media/platform/vsp1/vsp1_wpf.c b/drivers/media/platform/vsp1/vsp1_wpf.c index 95b62f4f77e785..ca19c534dac6de 100644 --- a/drivers/media/platform/vsp1/vsp1_wpf.c +++ b/drivers/media/platform/vsp1/vsp1_wpf.c @@ -284,7 +284,7 @@ struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index) if (!(vsp1->pdata.features & VSP1_HAS_LIF) || index != 0) flags |= MEDIA_LNK_FL_IMMUTABLE; - ret = media_entity_create_link(&wpf->entity.subdev.entity, + ret = media_create_pad_link(&wpf->entity.subdev.entity, RWPF_PAD_SOURCE, &wpf->video.video.entity, 0, flags); if (ret < 0) diff --git a/drivers/media/platform/xilinx/xilinx-vipp.c b/drivers/media/platform/xilinx/xilinx-vipp.c index b9bf24fefa5a6a..2352f7e5a6a3d6 100644 --- a/drivers/media/platform/xilinx/xilinx-vipp.c +++ b/drivers/media/platform/xilinx/xilinx-vipp.c @@ -156,7 +156,7 @@ static int xvip_graph_build_one(struct xvip_composite_device *xdev, local->name, local_pad->index, remote->name, remote_pad->index); - ret = media_entity_create_link(local, local_pad->index, + ret = media_create_pad_link(local, local_pad->index, remote, remote_pad->index, link_flags); if (ret < 0) { @@ -270,7 +270,7 @@ static int xvip_graph_build_dma(struct xvip_composite_device *xdev) source->name, source_pad->index, sink->name, sink_pad->index); - ret = media_entity_create_link(source, source_pad->index, + ret = media_create_pad_link(source, source_pad->index, sink, sink_pad->index, link_flags); if (ret < 0) { diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c index 0378a2c99ebb4f..a55eb524ea21f5 100644 --- a/drivers/media/usb/au0828/au0828-core.c +++ b/drivers/media/usb/au0828/au0828-core.c @@ -260,13 +260,13 @@ static void au0828_create_media_graph(struct au0828_dev *dev) return; if (tuner) - media_entity_create_link(tuner, 0, decoder, 0, + media_create_pad_link(tuner, 0, decoder, 0, MEDIA_LNK_FL_ENABLED); if (dev->vdev.entity.links) - media_entity_create_link(decoder, 1, &dev->vdev.entity, 0, + media_create_pad_link(decoder, 1, &dev->vdev.entity, 0, MEDIA_LNK_FL_ENABLED); if (dev->vbi_dev.entity.links) - media_entity_create_link(decoder, 2, &dev->vbi_dev.entity, 0, + media_create_pad_link(decoder, 2, &dev->vbi_dev.entity, 0, MEDIA_LNK_FL_ENABLED); #endif } diff --git a/drivers/media/usb/cx231xx/cx231xx-cards.c b/drivers/media/usb/cx231xx/cx231xx-cards.c index 89dc695c696e5b..695f0c092c794c 100644 --- a/drivers/media/usb/cx231xx/cx231xx-cards.c +++ b/drivers/media/usb/cx231xx/cx231xx-cards.c @@ -1264,11 +1264,11 @@ static void cx231xx_create_media_graph(struct cx231xx *dev) return; if (tuner) - media_entity_create_link(tuner, 0, decoder, 0, + media_create_pad_link(tuner, 0, decoder, 0, MEDIA_LNK_FL_ENABLED); - media_entity_create_link(decoder, 1, &dev->vdev.entity, 0, + media_create_pad_link(decoder, 1, &dev->vdev.entity, 0, MEDIA_LNK_FL_ENABLED); - media_entity_create_link(decoder, 2, &dev->vbi_dev.entity, 0, + media_create_pad_link(decoder, 2, &dev->vbi_dev.entity, 0, MEDIA_LNK_FL_ENABLED); #endif } diff --git a/drivers/media/usb/uvc/uvc_entity.c b/drivers/media/usb/uvc/uvc_entity.c index 24544549151617..429e428ccd93ff 100644 --- a/drivers/media/usb/uvc/uvc_entity.c +++ b/drivers/media/usb/uvc/uvc_entity.c @@ -56,7 +56,7 @@ static int uvc_mc_register_entity(struct uvc_video_chain *chain, continue; remote_pad = remote->num_pads - 1; - ret = media_entity_create_link(source, remote_pad, + ret = media_create_pad_link(source, remote_pad, sink, i, flags); if (ret < 0) return ret; diff --git a/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c b/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c index 8fb6761868986b..d96bdaaae50e50 100644 --- a/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c +++ b/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c @@ -971,7 +971,7 @@ vpfe_ipipeif_register_entities(struct vpfe_ipipeif_device *ipipeif, ipipeif->video_in.vpfe_dev = vpfe_dev; flags = 0; - ret = media_entity_create_link(&ipipeif->video_in.video_dev.entity, 0, + ret = media_create_pad_link(&ipipeif->video_in.video_dev.entity, 0, &ipipeif->subdev.entity, 0, flags); if (ret < 0) goto fail; diff --git a/drivers/staging/media/davinci_vpfe/dm365_isif.c b/drivers/staging/media/davinci_vpfe/dm365_isif.c index b1f01adfa7c833..df77288b0ec028 100644 --- a/drivers/staging/media/davinci_vpfe/dm365_isif.c +++ b/drivers/staging/media/davinci_vpfe/dm365_isif.c @@ -1817,7 +1817,7 @@ int vpfe_isif_register_entities(struct vpfe_isif_device *isif, isif->video_out.vpfe_dev = vpfe_dev; flags = 0; /* connect isif to video node */ - ret = media_entity_create_link(&isif->subdev.entity, 1, + ret = media_create_pad_link(&isif->subdev.entity, 1, &isif->video_out.video_dev.entity, 0, flags); if (ret < 0) diff --git a/drivers/staging/media/davinci_vpfe/dm365_resizer.c b/drivers/staging/media/davinci_vpfe/dm365_resizer.c index 7275cf3d6c20e4..50c8725c5aa60b 100644 --- a/drivers/staging/media/davinci_vpfe/dm365_resizer.c +++ b/drivers/staging/media/davinci_vpfe/dm365_resizer.c @@ -1826,27 +1826,27 @@ int vpfe_resizer_register_entities(struct vpfe_resizer_device *resizer, resizer->resizer_b.video_out.vpfe_dev = vpfe_dev; /* create link between Resizer Crop----> Resizer A*/ - ret = media_entity_create_link(&resizer->crop_resizer.subdev.entity, 1, + ret = media_create_pad_link(&resizer->crop_resizer.subdev.entity, 1, &resizer->resizer_a.subdev.entity, 0, flags); if (ret < 0) goto out_create_link; /* create link between Resizer Crop----> Resizer B*/ - ret = media_entity_create_link(&resizer->crop_resizer.subdev.entity, 2, + ret = media_create_pad_link(&resizer->crop_resizer.subdev.entity, 2, &resizer->resizer_b.subdev.entity, 0, flags); if (ret < 0) goto out_create_link; /* create link between Resizer A ----> video out */ - ret = media_entity_create_link(&resizer->resizer_a.subdev.entity, 1, + ret = media_create_pad_link(&resizer->resizer_a.subdev.entity, 1, &resizer->resizer_a.video_out.video_dev.entity, 0, flags); if (ret < 0) goto out_create_link; /* create link between Resizer B ----> video out */ - ret = media_entity_create_link(&resizer->resizer_b.subdev.entity, 1, + ret = media_create_pad_link(&resizer->resizer_b.subdev.entity, 1, &resizer->resizer_b.video_out.video_dev.entity, 0, flags); if (ret < 0) goto out_create_link; diff --git a/drivers/staging/media/davinci_vpfe/vpfe_mc_capture.c b/drivers/staging/media/davinci_vpfe/vpfe_mc_capture.c index 69b678ca40c06a..ec46f366dd1796 100644 --- a/drivers/staging/media/davinci_vpfe/vpfe_mc_capture.c +++ b/drivers/staging/media/davinci_vpfe/vpfe_mc_capture.c @@ -445,32 +445,32 @@ static int vpfe_register_entities(struct vpfe_device *vpfe_dev) /* if entity has no pads (ex: amplifier), cant establish link */ if (vpfe_dev->sd[i]->entity.num_pads) { - ret = media_entity_create_link(&vpfe_dev->sd[i]->entity, + ret = media_create_pad_link(&vpfe_dev->sd[i]->entity, 0, &vpfe_dev->vpfe_isif.subdev.entity, 0, flags); if (ret < 0) goto out_resizer_register; } - ret = media_entity_create_link(&vpfe_dev->vpfe_isif.subdev.entity, 1, + ret = media_create_pad_link(&vpfe_dev->vpfe_isif.subdev.entity, 1, &vpfe_dev->vpfe_ipipeif.subdev.entity, 0, flags); if (ret < 0) goto out_resizer_register; - ret = media_entity_create_link(&vpfe_dev->vpfe_ipipeif.subdev.entity, 1, + ret = media_create_pad_link(&vpfe_dev->vpfe_ipipeif.subdev.entity, 1, &vpfe_dev->vpfe_ipipe.subdev.entity, 0, flags); if (ret < 0) goto out_resizer_register; - ret = media_entity_create_link(&vpfe_dev->vpfe_ipipe.subdev.entity, + ret = media_create_pad_link(&vpfe_dev->vpfe_ipipe.subdev.entity, 1, &vpfe_dev->vpfe_resizer.crop_resizer.subdev.entity, 0, flags); if (ret < 0) goto out_resizer_register; - ret = media_entity_create_link(&vpfe_dev->vpfe_ipipeif.subdev.entity, 1, + ret = media_create_pad_link(&vpfe_dev->vpfe_ipipeif.subdev.entity, 1, &vpfe_dev->vpfe_resizer.crop_resizer.subdev.entity, 0, flags); if (ret < 0) diff --git a/drivers/staging/media/omap4iss/iss.c b/drivers/staging/media/omap4iss/iss.c index 5fc3675b190f4e..60e67fadcac18e 100644 --- a/drivers/staging/media/omap4iss/iss.c +++ b/drivers/staging/media/omap4iss/iss.c @@ -1259,7 +1259,7 @@ static int iss_register_entities(struct iss_device *iss) goto done; } - ret = media_entity_create_link(&sensor->entity, 0, input, pad, + ret = media_create_pad_link(&sensor->entity, 0, input, pad, flags); if (ret < 0) goto done; @@ -1317,31 +1317,31 @@ static int iss_initialize_modules(struct iss_device *iss) } /* Connect the submodules. */ - ret = media_entity_create_link( + ret = media_create_pad_link( &iss->csi2a.subdev.entity, CSI2_PAD_SOURCE, &iss->ipipeif.subdev.entity, IPIPEIF_PAD_SINK, 0); if (ret < 0) goto error_link; - ret = media_entity_create_link( + ret = media_create_pad_link( &iss->csi2b.subdev.entity, CSI2_PAD_SOURCE, &iss->ipipeif.subdev.entity, IPIPEIF_PAD_SINK, 0); if (ret < 0) goto error_link; - ret = media_entity_create_link( + ret = media_create_pad_link( &iss->ipipeif.subdev.entity, IPIPEIF_PAD_SOURCE_VP, &iss->resizer.subdev.entity, RESIZER_PAD_SINK, 0); if (ret < 0) goto error_link; - ret = media_entity_create_link( + ret = media_create_pad_link( &iss->ipipeif.subdev.entity, IPIPEIF_PAD_SOURCE_VP, &iss->ipipe.subdev.entity, IPIPE_PAD_SINK, 0); if (ret < 0) goto error_link; - ret = media_entity_create_link( + ret = media_create_pad_link( &iss->ipipe.subdev.entity, IPIPE_PAD_SOURCE_VP, &iss->resizer.subdev.entity, RESIZER_PAD_SINK, 0); if (ret < 0) diff --git a/drivers/staging/media/omap4iss/iss_csi2.c b/drivers/staging/media/omap4iss/iss_csi2.c index 86111e39a7283f..c6eb5a7a593f35 100644 --- a/drivers/staging/media/omap4iss/iss_csi2.c +++ b/drivers/staging/media/omap4iss/iss_csi2.c @@ -1291,7 +1291,7 @@ static int csi2_init_entities(struct iss_csi2_device *csi2, const char *subname) goto error_video; /* Connect the CSI2 subdev to the video node. */ - ret = media_entity_create_link(&csi2->subdev.entity, CSI2_PAD_SOURCE, + ret = media_create_pad_link(&csi2->subdev.entity, CSI2_PAD_SOURCE, &csi2->video_out.video.entity, 0, 0); if (ret < 0) goto error_link; diff --git a/drivers/staging/media/omap4iss/iss_ipipeif.c b/drivers/staging/media/omap4iss/iss_ipipeif.c index d031a5f22cdcb5..b0c5f2431b6263 100644 --- a/drivers/staging/media/omap4iss/iss_ipipeif.c +++ b/drivers/staging/media/omap4iss/iss_ipipeif.c @@ -762,7 +762,7 @@ static int ipipeif_init_entities(struct iss_ipipeif_device *ipipeif) return ret; /* Connect the IPIPEIF subdev to the video node. */ - ret = media_entity_create_link(&ipipeif->subdev.entity, + ret = media_create_pad_link(&ipipeif->subdev.entity, IPIPEIF_PAD_SOURCE_ISIF_SF, &ipipeif->video_out.video.entity, 0, 0); if (ret < 0) diff --git a/drivers/staging/media/omap4iss/iss_resizer.c b/drivers/staging/media/omap4iss/iss_resizer.c index 11031d9de3ab44..a2cb57cb460dad 100644 --- a/drivers/staging/media/omap4iss/iss_resizer.c +++ b/drivers/staging/media/omap4iss/iss_resizer.c @@ -804,7 +804,7 @@ static int resizer_init_entities(struct iss_resizer_device *resizer) return ret; /* Connect the RESIZER subdev to the video node. */ - ret = media_entity_create_link(&resizer->subdev.entity, + ret = media_create_pad_link(&resizer->subdev.entity, RESIZER_PAD_SOURCE_MEM, &resizer->video_out.video.entity, 0, 0); if (ret < 0) diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 96a5d3e6f6f43e..ad9e16e5e44dcc 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -215,7 +215,7 @@ int media_entity_init(struct media_entity *entity, u16 num_pads, struct media_pad *pads); void media_entity_cleanup(struct media_entity *entity); -int media_entity_create_link(struct media_entity *source, u16 source_pad, +int media_create_pad_link(struct media_entity *source, u16 source_pad, struct media_entity *sink, u16 sink_pad, u32 flags); void __media_entity_remove_links(struct media_entity *entity); void media_entity_remove_links(struct media_entity *entity); -- cgit 1.2.3-korg From d10c98949d1a1fff14d750fe5162213bb5b39e11 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Wed, 19 Aug 2015 12:35:21 -0300 Subject: [media] media: use entity.graph_obj.mdev instead of .parent The struct media_entity has a .parent field that stores a pointer to the parent struct media_device. But recently a media_gobj was embedded into the entities and since struct media_gojb already has a pointer to a struct media_device in the .mdev field, the .parent field becomes redundant and can be removed. This patch replaces all the usage of .parent by .graph_obj.mdev so that field will become unused and can be removed on a later patch. No functional changes. The transformation was made using the following coccinelle spatch: @@ struct media_entity *me; @@ - me->parent + me->graph_obj.mdev @@ struct media_entity *link; @@ - link->source->entity->parent + link->source->entity->graph_obj.mdev @@ struct exynos_video_entity *ve; @@ - ve->vdev.entity.parent + ve->vdev.entity.graph_obj.mdev Suggested-by: Mauro Carvalho Chehab Signed-off-by: Javier Martinez Canillas Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 8 ++--- drivers/media/media-entity.c | 34 ++++++++++++---------- drivers/media/platform/exynos4-is/fimc-isp-video.c | 6 ++-- drivers/media/platform/exynos4-is/fimc-lite.c | 8 ++--- drivers/media/platform/exynos4-is/media-dev.c | 2 +- drivers/media/platform/exynos4-is/media-dev.h | 8 ++--- drivers/media/platform/omap3isp/isp.c | 4 +-- drivers/media/platform/omap3isp/ispvideo.c | 2 +- drivers/media/platform/vsp1/vsp1_video.c | 2 +- drivers/media/platform/xilinx/xilinx-dma.c | 2 +- drivers/staging/media/davinci_vpfe/vpfe_video.c | 6 ++-- drivers/staging/media/omap4iss/iss.c | 4 +-- drivers/staging/media/omap4iss/iss_video.c | 2 +- 13 files changed, 45 insertions(+), 43 deletions(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 0f3844470147e5..138b18416460d8 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -435,8 +435,8 @@ int __must_check media_device_register_entity(struct media_device *mdev, int i; /* Warn if we apparently re-register an entity */ - WARN_ON(entity->parent != NULL); - entity->parent = mdev; + WARN_ON(entity->graph_obj.mdev != NULL); + entity->graph_obj.mdev = mdev; spin_lock(&mdev->lock); /* Initialize media_gobj embedded at the entity */ @@ -471,7 +471,7 @@ EXPORT_SYMBOL_GPL(media_device_register_entity); void media_device_unregister_entity(struct media_entity *entity) { int i; - struct media_device *mdev = entity->parent; + struct media_device *mdev = entity->graph_obj.mdev; if (mdev == NULL) return; @@ -484,7 +484,7 @@ void media_device_unregister_entity(struct media_entity *entity) media_gobj_remove(&entity->graph_obj); list_del(&entity->list); spin_unlock(&mdev->lock); - entity->parent = NULL; + entity->graph_obj.mdev = NULL; } EXPORT_SYMBOL_GPL(media_device_unregister_entity); diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index e840da0325b71c..6ed4a19b0be95d 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -332,7 +332,7 @@ EXPORT_SYMBOL_GPL(media_entity_graph_walk_next); __must_check int media_entity_pipeline_start(struct media_entity *entity, struct media_pipeline *pipe) { - struct media_device *mdev = entity->parent; + struct media_device *mdev = entity->graph_obj.mdev; struct media_entity_graph graph; struct media_entity *entity_err = entity; int ret; @@ -387,7 +387,7 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity, ret = entity->ops->link_validate(link); if (ret < 0 && ret != -ENOIOCTLCMD) { - dev_dbg(entity->parent->dev, + dev_dbg(entity->graph_obj.mdev->dev, "link validation failed for \"%s\":%u -> \"%s\":%u, error %d\n", link->source->entity->name, link->source->index, @@ -401,7 +401,7 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity, if (!bitmap_full(active, entity->num_pads)) { ret = -EPIPE; - dev_dbg(entity->parent->dev, + dev_dbg(entity->graph_obj.mdev->dev, "\"%s\":%u must be connected by an enabled link\n", entity->name, (unsigned)find_first_zero_bit( @@ -454,7 +454,7 @@ EXPORT_SYMBOL_GPL(media_entity_pipeline_start); */ void media_entity_pipeline_stop(struct media_entity *entity) { - struct media_device *mdev = entity->parent; + struct media_device *mdev = entity->graph_obj.mdev; struct media_entity_graph graph; mutex_lock(&mdev->graph_mutex); @@ -490,8 +490,8 @@ struct media_entity *media_entity_get(struct media_entity *entity) if (entity == NULL) return NULL; - if (entity->parent->dev && - !try_module_get(entity->parent->dev->driver->owner)) + if (entity->graph_obj.mdev->dev && + !try_module_get(entity->graph_obj.mdev->dev->driver->owner)) return NULL; return entity; @@ -511,8 +511,8 @@ void media_entity_put(struct media_entity *entity) if (entity == NULL) return; - if (entity->parent->dev) - module_put(entity->parent->dev->driver->owner); + if (entity->graph_obj.mdev->dev) + module_put(entity->graph_obj.mdev->dev->driver->owner); } EXPORT_SYMBOL_GPL(media_entity_put); @@ -561,7 +561,8 @@ media_create_pad_link(struct media_entity *source, u16 source_pad, link->flags = flags; /* Initialize graph object embedded at the new link */ - media_gobj_init(source->parent, MEDIA_GRAPH_LINK, &link->graph_obj); + media_gobj_init(source->graph_obj.mdev, MEDIA_GRAPH_LINK, + &link->graph_obj); /* Create the backlink. Backlinks are used to help graph traversal and * are not reported to userspace. @@ -577,7 +578,8 @@ media_create_pad_link(struct media_entity *source, u16 source_pad, backlink->flags = flags; /* Initialize graph object embedded at the new link */ - media_gobj_init(sink->parent, MEDIA_GRAPH_LINK, &backlink->graph_obj); + media_gobj_init(sink->graph_obj.mdev, MEDIA_GRAPH_LINK, + &backlink->graph_obj); link->reverse = backlink; backlink->reverse = link; @@ -629,12 +631,12 @@ EXPORT_SYMBOL_GPL(__media_entity_remove_links); void media_entity_remove_links(struct media_entity *entity) { /* Do nothing if the entity is not registered. */ - if (entity->parent == NULL) + if (entity->graph_obj.mdev == NULL) return; - mutex_lock(&entity->parent->graph_mutex); + mutex_lock(&entity->graph_obj.mdev->graph_mutex); __media_entity_remove_links(entity); - mutex_unlock(&entity->parent->graph_mutex); + mutex_unlock(&entity->graph_obj.mdev->graph_mutex); } EXPORT_SYMBOL_GPL(media_entity_remove_links); @@ -703,7 +705,7 @@ int __media_entity_setup_link(struct media_link *link, u32 flags) (source->stream_count || sink->stream_count)) return -EBUSY; - mdev = source->parent; + mdev = source->graph_obj.mdev; if (mdev->link_notify) { ret = mdev->link_notify(link, flags, @@ -724,9 +726,9 @@ int media_entity_setup_link(struct media_link *link, u32 flags) { int ret; - mutex_lock(&link->source->entity->parent->graph_mutex); + mutex_lock(&link->source->entity->graph_obj.mdev->graph_mutex); ret = __media_entity_setup_link(link, flags); - mutex_unlock(&link->source->entity->parent->graph_mutex); + mutex_unlock(&link->source->entity->graph_obj.mdev->graph_mutex); return ret; } diff --git a/drivers/media/platform/exynos4-is/fimc-isp-video.c b/drivers/media/platform/exynos4-is/fimc-isp-video.c index 817226d52b7421..239df7d8bd3067 100644 --- a/drivers/media/platform/exynos4-is/fimc-isp-video.c +++ b/drivers/media/platform/exynos4-is/fimc-isp-video.c @@ -287,7 +287,7 @@ static int isp_video_open(struct file *file) goto rel_fh; if (v4l2_fh_is_singular_file(file)) { - mutex_lock(&me->parent->graph_mutex); + mutex_lock(&me->graph_obj.mdev->graph_mutex); ret = fimc_pipeline_call(ve, open, me, true); @@ -295,7 +295,7 @@ static int isp_video_open(struct file *file) if (ret == 0) me->use_count++; - mutex_unlock(&me->parent->graph_mutex); + mutex_unlock(&me->graph_obj.mdev->graph_mutex); } if (!ret) goto unlock; @@ -311,7 +311,7 @@ static int isp_video_release(struct file *file) struct fimc_isp *isp = video_drvdata(file); struct fimc_is_video *ivc = &isp->video_capture; struct media_entity *entity = &ivc->ve.vdev.entity; - struct media_device *mdev = entity->parent; + struct media_device *mdev = entity->graph_obj.mdev; mutex_lock(&isp->video_lock); diff --git a/drivers/media/platform/exynos4-is/fimc-lite.c b/drivers/media/platform/exynos4-is/fimc-lite.c index 2ce670425cd96b..11d25712153dd2 100644 --- a/drivers/media/platform/exynos4-is/fimc-lite.c +++ b/drivers/media/platform/exynos4-is/fimc-lite.c @@ -494,7 +494,7 @@ static int fimc_lite_open(struct file *file) atomic_read(&fimc->out_path) != FIMC_IO_DMA) goto unlock; - mutex_lock(&me->parent->graph_mutex); + mutex_lock(&me->graph_obj.mdev->graph_mutex); ret = fimc_pipeline_call(&fimc->ve, open, me, true); @@ -502,7 +502,7 @@ static int fimc_lite_open(struct file *file) if (ret == 0) me->use_count++; - mutex_unlock(&me->parent->graph_mutex); + mutex_unlock(&me->graph_obj.mdev->graph_mutex); if (!ret) { fimc_lite_clear_event_counters(fimc); @@ -535,9 +535,9 @@ static int fimc_lite_release(struct file *file) fimc_pipeline_call(&fimc->ve, close); clear_bit(ST_FLITE_IN_USE, &fimc->state); - mutex_lock(&entity->parent->graph_mutex); + mutex_lock(&entity->graph_obj.mdev->graph_mutex); entity->use_count--; - mutex_unlock(&entity->parent->graph_mutex); + mutex_unlock(&entity->graph_obj.mdev->graph_mutex); } _vb2_fop_release(file, NULL); diff --git a/drivers/media/platform/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c index 4c524a02c59c65..a67b98676dd923 100644 --- a/drivers/media/platform/exynos4-is/media-dev.c +++ b/drivers/media/platform/exynos4-is/media-dev.c @@ -1046,7 +1046,7 @@ static int __fimc_md_modify_pipeline(struct media_entity *entity, bool enable) return ret; } -/* Locking: called with entity->parent->graph_mutex mutex held. */ +/* Locking: called with entity->graph_obj.mdev->graph_mutex mutex held. */ static int __fimc_md_modify_pipelines(struct media_entity *entity, bool enable) { struct media_entity *entity_err = entity; diff --git a/drivers/media/platform/exynos4-is/media-dev.h b/drivers/media/platform/exynos4-is/media-dev.h index 93a96126929b51..e8845e1f5aabed 100644 --- a/drivers/media/platform/exynos4-is/media-dev.h +++ b/drivers/media/platform/exynos4-is/media-dev.h @@ -164,8 +164,8 @@ struct fimc_sensor_info *source_to_sensor_info(struct fimc_source_info *si) static inline struct fimc_md *entity_to_fimc_mdev(struct media_entity *me) { - return me->parent == NULL ? NULL : - container_of(me->parent, struct fimc_md, media_dev); + return me->graph_obj.mdev == NULL ? NULL : + container_of(me->graph_obj.mdev, struct fimc_md, media_dev); } static inline struct fimc_md *notifier_to_fimc_md(struct v4l2_async_notifier *n) @@ -175,12 +175,12 @@ static inline struct fimc_md *notifier_to_fimc_md(struct v4l2_async_notifier *n) static inline void fimc_md_graph_lock(struct exynos_video_entity *ve) { - mutex_lock(&ve->vdev.entity.parent->graph_mutex); + mutex_lock(&ve->vdev.entity.graph_obj.mdev->graph_mutex); } static inline void fimc_md_graph_unlock(struct exynos_video_entity *ve) { - mutex_unlock(&ve->vdev.entity.parent->graph_mutex); + mutex_unlock(&ve->vdev.entity.graph_obj.mdev->graph_mutex); } int fimc_md_set_camclk(struct v4l2_subdev *sd, bool on); diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c index 6351f35b0a6565..aa13b17d19a0d0 100644 --- a/drivers/media/platform/omap3isp/isp.c +++ b/drivers/media/platform/omap3isp/isp.c @@ -787,7 +787,7 @@ int omap3isp_pipeline_pm_use(struct media_entity *entity, int use) int change = use ? 1 : -1; int ret; - mutex_lock(&entity->parent->graph_mutex); + mutex_lock(&entity->graph_obj.mdev->graph_mutex); /* Apply use count to node. */ entity->use_count += change; @@ -798,7 +798,7 @@ int omap3isp_pipeline_pm_use(struct media_entity *entity, int use) if (ret < 0) entity->use_count -= change; - mutex_unlock(&entity->parent->graph_mutex); + mutex_unlock(&entity->graph_obj.mdev->graph_mutex); return ret; } diff --git a/drivers/media/platform/omap3isp/ispvideo.c b/drivers/media/platform/omap3isp/ispvideo.c index 0e129075e99ffa..a2e53b34d95fb7 100644 --- a/drivers/media/platform/omap3isp/ispvideo.c +++ b/drivers/media/platform/omap3isp/ispvideo.c @@ -226,7 +226,7 @@ static int isp_video_get_graph_data(struct isp_video *video, { struct media_entity_graph graph; struct media_entity *entity = &video->video.entity; - struct media_device *mdev = entity->parent; + struct media_device *mdev = entity->graph_obj.mdev; struct isp_video *far_end = NULL; mutex_lock(&mdev->graph_mutex); diff --git a/drivers/media/platform/vsp1/vsp1_video.c b/drivers/media/platform/vsp1/vsp1_video.c index 516595cff4083f..c2b2281bb5306d 100644 --- a/drivers/media/platform/vsp1/vsp1_video.c +++ b/drivers/media/platform/vsp1/vsp1_video.c @@ -380,7 +380,7 @@ static int vsp1_pipeline_validate(struct vsp1_pipeline *pipe, { struct media_entity_graph graph; struct media_entity *entity = &video->video.entity; - struct media_device *mdev = entity->parent; + struct media_device *mdev = entity->graph_obj.mdev; unsigned int i; int ret; diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c index ce2d34df12ed81..4b84a0e54a0cd3 100644 --- a/drivers/media/platform/xilinx/xilinx-dma.c +++ b/drivers/media/platform/xilinx/xilinx-dma.c @@ -181,7 +181,7 @@ static int xvip_pipeline_validate(struct xvip_pipeline *pipe, { struct media_entity_graph graph; struct media_entity *entity = &start->video.entity; - struct media_device *mdev = entity->parent; + struct media_device *mdev = entity->graph_obj.mdev; unsigned int num_inputs = 0; unsigned int num_outputs = 0; diff --git a/drivers/staging/media/davinci_vpfe/vpfe_video.c b/drivers/staging/media/davinci_vpfe/vpfe_video.c index daae720eb82caf..6e0d0375634d1e 100644 --- a/drivers/staging/media/davinci_vpfe/vpfe_video.c +++ b/drivers/staging/media/davinci_vpfe/vpfe_video.c @@ -130,7 +130,7 @@ __vpfe_video_get_format(struct vpfe_video_device *video, static void vpfe_prepare_pipeline(struct vpfe_video_device *video) { struct media_entity *entity = &video->video_dev.entity; - struct media_device *mdev = entity->parent; + struct media_device *mdev = entity->graph_obj.mdev; struct vpfe_pipeline *pipe = &video->pipe; struct vpfe_video_device *far_end = NULL; struct media_entity_graph graph; @@ -288,7 +288,7 @@ static int vpfe_pipeline_enable(struct vpfe_pipeline *pipe) else entity = &pipe->inputs[0]->video_dev.entity; - mdev = entity->parent; + mdev = entity->graph_obj.mdev; mutex_lock(&mdev->graph_mutex); media_entity_graph_walk_start(&graph, entity); while ((entity = media_entity_graph_walk_next(&graph))) { @@ -328,7 +328,7 @@ static int vpfe_pipeline_disable(struct vpfe_pipeline *pipe) else entity = &pipe->inputs[0]->video_dev.entity; - mdev = entity->parent; + mdev = entity->graph_obj.mdev; mutex_lock(&mdev->graph_mutex); media_entity_graph_walk_start(&graph, entity); diff --git a/drivers/staging/media/omap4iss/iss.c b/drivers/staging/media/omap4iss/iss.c index 60e67fadcac18e..b405dc93d90ac0 100644 --- a/drivers/staging/media/omap4iss/iss.c +++ b/drivers/staging/media/omap4iss/iss.c @@ -494,7 +494,7 @@ int omap4iss_pipeline_pm_use(struct media_entity *entity, int use) int change = use ? 1 : -1; int ret; - mutex_lock(&entity->parent->graph_mutex); + mutex_lock(&entity->graph_obj.mdev->graph_mutex); /* Apply use count to node. */ entity->use_count += change; @@ -505,7 +505,7 @@ int omap4iss_pipeline_pm_use(struct media_entity *entity, int use) if (ret < 0) entity->use_count -= change; - mutex_unlock(&entity->parent->graph_mutex); + mutex_unlock(&entity->graph_obj.mdev->graph_mutex); return ret; } diff --git a/drivers/staging/media/omap4iss/iss_video.c b/drivers/staging/media/omap4iss/iss_video.c index dd8ff03912a711..ea384630aab0e2 100644 --- a/drivers/staging/media/omap4iss/iss_video.c +++ b/drivers/staging/media/omap4iss/iss_video.c @@ -206,7 +206,7 @@ iss_video_far_end(struct iss_video *video) { struct media_entity_graph graph; struct media_entity *entity = &video->video.entity; - struct media_device *mdev = entity->parent; + struct media_device *mdev = entity->graph_obj.mdev; struct iss_video *far_end = NULL; mutex_lock(&mdev->graph_mutex); -- cgit 1.2.3-korg From b42ff142b8d880427e8c30b05de71b841a67aaad Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Wed, 19 Aug 2015 12:35:22 -0300 Subject: [media] media: remove media entity .parent field Now that the struct media_entity .parent field is unused, it can be safely removed. Since all the previous users were converted to use the .mdev field from the embedded struct media_gobj instead. Signed-off-by: Javier Martinez Canillas Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/media/media-entity.h | 1 - 1 file changed, 1 deletion(-) diff --git a/include/media/media-entity.h b/include/media/media-entity.h index ad9e16e5e44dcc..a493dd9910f418 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -103,7 +103,6 @@ struct media_entity_operations { struct media_entity { struct media_gobj graph_obj; struct list_head list; - struct media_device *parent; /* Media device this entity belongs to*/ const char *name; /* Entity name */ u32 type; /* Entity type (MEDIA_ENT_T_*) */ u32 revision; /* Entity revision, driver specific */ -- cgit 1.2.3-korg From a1d2510ebd7a14f0d1a89c138101beaeac076dd2 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 20 Aug 2015 07:43:07 -0300 Subject: [media] uapi/media.h: Declare interface types for V4L2 and DVB Declare the interface types that will be used by the new G_TOPOLOGY ioctl that will be defined later on. For now, we need those types, as they'll be used on the internal structs associated with the new media_interface graph object defined on the next patch. Acked-by: Hans Verkuil Reviewed-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- include/uapi/linux/media.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h index 4e816be3de39b4..3ad3d6be293fb4 100644 --- a/include/uapi/linux/media.h +++ b/include/uapi/linux/media.h @@ -167,6 +167,27 @@ struct media_links_enum { __u32 reserved[4]; }; +/* Interface type ranges */ + +#define MEDIA_INTF_T_DVB_BASE 0x00000100 +#define MEDIA_INTF_T_V4L_BASE 0x00000200 + +/* Interface types */ + +#define MEDIA_INTF_T_DVB_FE (MEDIA_INTF_T_DVB_BASE) +#define MEDIA_INTF_T_DVB_DEMUX (MEDIA_INTF_T_DVB_BASE + 1) +#define MEDIA_INTF_T_DVB_DVR (MEDIA_INTF_T_DVB_BASE + 2) +#define MEDIA_INTF_T_DVB_CA (MEDIA_INTF_T_DVB_BASE + 3) +#define MEDIA_INTF_T_DVB_NET (MEDIA_INTF_T_DVB_BASE + 4) + +#define MEDIA_INTF_T_V4L_VIDEO (MEDIA_INTF_T_V4L_BASE) +#define MEDIA_INTF_T_V4L_VBI (MEDIA_INTF_T_V4L_BASE + 1) +#define MEDIA_INTF_T_V4L_RADIO (MEDIA_INTF_T_V4L_BASE + 2) +#define MEDIA_INTF_T_V4L_SUBDEV (MEDIA_INTF_T_V4L_BASE + 3) +#define MEDIA_INTF_T_V4L_SWRADIO (MEDIA_INTF_T_V4L_BASE + 4) + +/* TBD: declare the structs needed for the new G_TOPOLOGY ioctl */ + #define MEDIA_IOC_DEVICE_INFO _IOWR('|', 0x00, struct media_device_info) #define MEDIA_IOC_ENUM_ENTITIES _IOWR('|', 0x01, struct media_entity_desc) #define MEDIA_IOC_ENUM_LINKS _IOWR('|', 0x02, struct media_links_enum) -- cgit 1.2.3-korg From 27e543fa87deea308f0cc5224ab19e397b0a5ded Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 20 Aug 2015 09:07:34 -0300 Subject: [media] media: add functions to allow creating interfaces Interfaces are different than entities: they represent a Kernel<->userspace interaction, while entities represent a piece of hardware/firmware/software that executes a function. Let's distinguish them by creating a separate structure to store the interfaces. Later patches should change the existing drivers and logic to split the current interface embedded inside the entity structure (device nodes) into a separate object of the graph. Acked-by: Hans Verkuil Reviewed-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 83 ++++++++++++++++++++++++++++++++++++++++++++ include/media/media-device.h | 2 ++ include/media/media-entity.h | 48 +++++++++++++++++++++++++ 3 files changed, 133 insertions(+) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 6ed4a19b0be95d..160ce2cc0865f4 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -44,11 +44,41 @@ static inline const char *gobj_type(enum media_gobj_type type) return "pad"; case MEDIA_GRAPH_LINK: return "link"; + case MEDIA_GRAPH_INTF_DEVNODE: + return "intf-devnode"; default: return "unknown"; } } +static inline const char *intf_type(struct media_interface *intf) +{ + switch (intf->type) { + case MEDIA_INTF_T_DVB_FE: + return "frontend"; + case MEDIA_INTF_T_DVB_DEMUX: + return "demux"; + case MEDIA_INTF_T_DVB_DVR: + return "DVR"; + case MEDIA_INTF_T_DVB_CA: + return "CA"; + case MEDIA_INTF_T_DVB_NET: + return "dvbnet"; + case MEDIA_INTF_T_V4L_VIDEO: + return "video"; + case MEDIA_INTF_T_V4L_VBI: + return "vbi"; + case MEDIA_INTF_T_V4L_RADIO: + return "radio"; + case MEDIA_INTF_T_V4L_SUBDEV: + return "v4l2-subdev"; + case MEDIA_INTF_T_V4L_SWRADIO: + return "swradio"; + default: + return "unknown-intf"; + } +}; + static void dev_dbg_obj(const char *event_name, struct media_gobj *gobj) { #if defined(DEBUG) || defined (CONFIG_DYNAMIC_DEBUG) @@ -84,6 +114,19 @@ static void dev_dbg_obj(const char *event_name, struct media_gobj *gobj) "%s: id 0x%08x pad#%d: '%s':%d\n", event_name, gobj->id, media_localid(gobj), pad->entity->name, pad->index); + break; + } + case MEDIA_GRAPH_INTF_DEVNODE: + { + struct media_interface *intf = gobj_to_intf(gobj); + struct media_intf_devnode *devnode = intf_to_devnode(intf); + + dev_dbg(gobj->mdev->dev, + "%s: id 0x%08x intf_devnode#%d: %s - major: %d, minor: %d\n", + event_name, gobj->id, media_localid(gobj), + intf_type(intf), + devnode->major, devnode->minor); + break; } } #endif @@ -119,6 +162,9 @@ void media_gobj_init(struct media_device *mdev, case MEDIA_GRAPH_LINK: gobj->id = media_gobj_gen_id(type, ++mdev->link_id); break; + case MEDIA_GRAPH_INTF_DEVNODE: + gobj->id = media_gobj_gen_id(type, ++mdev->intf_devnode_id); + break; } dev_dbg_obj(__func__, gobj); } @@ -793,3 +839,40 @@ struct media_pad *media_entity_remote_pad(struct media_pad *pad) } EXPORT_SYMBOL_GPL(media_entity_remote_pad); + + +/* Functions related to the media interface via device nodes */ + +struct media_intf_devnode *media_devnode_create(struct media_device *mdev, + u32 type, u32 flags, + u32 major, u32 minor, + gfp_t gfp_flags) +{ + struct media_intf_devnode *devnode; + struct media_interface *intf; + + devnode = kzalloc(sizeof(*devnode), gfp_flags); + if (!devnode) + return NULL; + + intf = &devnode->intf; + + intf->type = type; + intf->flags = flags; + + devnode->major = major; + devnode->minor = minor; + + media_gobj_init(mdev, MEDIA_GRAPH_INTF_DEVNODE, + &devnode->intf.graph_obj); + + return devnode; +} +EXPORT_SYMBOL_GPL(media_devnode_create); + +void media_devnode_remove(struct media_intf_devnode *devnode) +{ + media_gobj_remove(&devnode->intf.graph_obj); + kfree(devnode); +} +EXPORT_SYMBOL_GPL(media_devnode_remove); diff --git a/include/media/media-device.h b/include/media/media-device.h index 05414e351f8e37..3b14394d570102 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -44,6 +44,7 @@ struct device; * @entity_id: Unique ID used on the last entity registered * @pad_id: Unique ID used on the last pad registered * @link_id: Unique ID used on the last link registered + * @intf_devnode_id: Unique ID used on the last interface devnode registered * @entities: List of registered entities * @lock: Entities list lock * @graph_mutex: Entities graph operation lock @@ -73,6 +74,7 @@ struct media_device { u32 entity_id; u32 pad_id; u32 link_id; + u32 intf_devnode_id; struct list_head entities; diff --git a/include/media/media-entity.h b/include/media/media-entity.h index a493dd9910f418..4d5fc91c4134bf 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -36,11 +36,14 @@ * @MEDIA_GRAPH_ENTITY: Identify a media entity * @MEDIA_GRAPH_PAD: Identify a media pad * @MEDIA_GRAPH_LINK: Identify a media link + * @MEDIA_GRAPH_INTF_DEVNODE: Identify a media Kernel API interface via + * a device node */ enum media_gobj_type { MEDIA_GRAPH_ENTITY, MEDIA_GRAPH_PAD, MEDIA_GRAPH_LINK, + MEDIA_GRAPH_INTF_DEVNODE, }; #define MEDIA_BITS_PER_TYPE 8 @@ -141,6 +144,34 @@ struct media_entity { } info; }; +/** + * struct media_intf_devnode - Define a Kernel API interface + * + * @graph_obj: embedded graph object + * @type: Type of the interface as defined at the + * uapi/media/media.h header, e. g. + * MEDIA_INTF_T_* + * @flags: Interface flags as defined at uapi/media/media.h + */ +struct media_interface { + struct media_gobj graph_obj; + u32 type; + u32 flags; +}; + +/** + * struct media_intf_devnode - Define a Kernel API interface via a device node + * + * @intf: embedded interface object + * @major: Major number of a device node + * @minor: Minor number of a device node + */ +struct media_intf_devnode { + struct media_interface intf; + u32 major; + u32 minor; +}; + static inline u32 media_entity_type(struct media_entity *entity) { return entity->type & MEDIA_ENT_TYPE_MASK; @@ -205,6 +236,18 @@ struct media_entity_graph { #define gobj_to_link(gobj) \ container_of(gobj, struct media_link, graph_obj) +#define gobj_to_link(gobj) \ + container_of(gobj, struct media_link, graph_obj) + +#define gobj_to_pad(gobj) \ + container_of(gobj, struct media_pad, graph_obj) + +#define gobj_to_intf(gobj) \ + container_of(gobj, struct media_interface, graph_obj) + +#define intf_to_devnode(intf) \ + container_of(intf, struct media_intf_devnode, intf) + void media_gobj_init(struct media_device *mdev, enum media_gobj_type type, struct media_gobj *gobj); @@ -236,6 +279,11 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity, struct media_pipeline *pipe); void media_entity_pipeline_stop(struct media_entity *entity); +struct media_intf_devnode *media_devnode_create(struct media_device *mdev, + u32 type, u32 flags, + u32 major, u32 minor, + gfp_t gfp_flags); +void media_devnode_remove(struct media_intf_devnode *devnode); #define media_entity_call(entity, operation, args...) \ (((entity)->ops && (entity)->ops->operation) ? \ (entity)->ops->operation((entity) , ##args) : -ENOIOCTLCMD) -- cgit 1.2.3-korg From f2f6da0d77027d05bf8a06eb8b80fe139f9cc853 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Wed, 26 Aug 2015 09:24:45 -0300 Subject: [media] omap3isp: separate links creation from entities init The omap3isp driver initializes the entities and creates the pads links before the entities are registered with the media device. This does not work now that object IDs are used to create links so the media_device has to be set. Split out the pads links creation from the entity initialization so the links are created after the entities have been registered with the media device. Suggested-by: Mauro Carvalho Chehab Signed-off-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/omap3isp/isp.c | 152 +++++++++++++++++---------- drivers/media/platform/omap3isp/ispccdc.c | 22 ++-- drivers/media/platform/omap3isp/ispccdc.h | 1 + drivers/media/platform/omap3isp/ispccp2.c | 22 ++-- drivers/media/platform/omap3isp/ispccp2.h | 1 + drivers/media/platform/omap3isp/ispcsi2.c | 22 ++-- drivers/media/platform/omap3isp/ispcsi2.h | 1 + drivers/media/platform/omap3isp/isppreview.c | 33 +++--- drivers/media/platform/omap3isp/isppreview.h | 1 + drivers/media/platform/omap3isp/ispresizer.c | 33 +++--- drivers/media/platform/omap3isp/ispresizer.h | 1 + 11 files changed, 185 insertions(+), 104 deletions(-) diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c index aa13b17d19a0d0..b8f6f81d2db233 100644 --- a/drivers/media/platform/omap3isp/isp.c +++ b/drivers/media/platform/omap3isp/isp.c @@ -1933,6 +1933,100 @@ done: return ret; } +/* + * isp_create_pads_links - Pads links creation for the subdevices + * @isp : Pointer to ISP device + * return negative error code or zero on success + */ +static int isp_create_pads_links(struct isp_device *isp) +{ + int ret; + + ret = omap3isp_csi2_create_pads_links(isp); + if (ret < 0) { + dev_err(isp->dev, "CSI2 pads links creation failed\n"); + return ret; + } + + ret = omap3isp_ccp2_create_pads_links(isp); + if (ret < 0) { + dev_err(isp->dev, "CCP2 pads links creation failed\n"); + return ret; + } + + ret = omap3isp_ccdc_create_pads_links(isp); + if (ret < 0) { + dev_err(isp->dev, "CCDC pads links creation failed\n"); + return ret; + } + + ret = omap3isp_preview_create_pads_links(isp); + if (ret < 0) { + dev_err(isp->dev, "Preview pads links creation failed\n"); + return ret; + } + + ret = omap3isp_resizer_create_pads_links(isp); + if (ret < 0) { + dev_err(isp->dev, "Resizer pads links creation failed\n"); + return ret; + } + + /* Connect the submodules. */ + ret = media_create_pad_link( + &isp->isp_csi2a.subdev.entity, CSI2_PAD_SOURCE, + &isp->isp_ccdc.subdev.entity, CCDC_PAD_SINK, 0); + if (ret < 0) + return ret; + + ret = media_create_pad_link( + &isp->isp_ccp2.subdev.entity, CCP2_PAD_SOURCE, + &isp->isp_ccdc.subdev.entity, CCDC_PAD_SINK, 0); + if (ret < 0) + return ret; + + ret = media_create_pad_link( + &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP, + &isp->isp_prev.subdev.entity, PREV_PAD_SINK, 0); + if (ret < 0) + return ret; + + ret = media_create_pad_link( + &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_OF, + &isp->isp_res.subdev.entity, RESZ_PAD_SINK, 0); + if (ret < 0) + return ret; + + ret = media_create_pad_link( + &isp->isp_prev.subdev.entity, PREV_PAD_SOURCE, + &isp->isp_res.subdev.entity, RESZ_PAD_SINK, 0); + if (ret < 0) + return ret; + + ret = media_create_pad_link( + &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP, + &isp->isp_aewb.subdev.entity, 0, + MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE); + if (ret < 0) + return ret; + + ret = media_create_pad_link( + &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP, + &isp->isp_af.subdev.entity, 0, + MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE); + if (ret < 0) + return ret; + + ret = media_create_pad_link( + &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP, + &isp->isp_hist.subdev.entity, 0, + MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE); + if (ret < 0) + return ret; + + return 0; +} + static void isp_cleanup_modules(struct isp_device *isp) { omap3isp_h3a_aewb_cleanup(isp); @@ -2003,62 +2097,8 @@ static int isp_initialize_modules(struct isp_device *isp) goto error_h3a_af; } - /* Connect the submodules. */ - ret = media_create_pad_link( - &isp->isp_csi2a.subdev.entity, CSI2_PAD_SOURCE, - &isp->isp_ccdc.subdev.entity, CCDC_PAD_SINK, 0); - if (ret < 0) - goto error_link; - - ret = media_create_pad_link( - &isp->isp_ccp2.subdev.entity, CCP2_PAD_SOURCE, - &isp->isp_ccdc.subdev.entity, CCDC_PAD_SINK, 0); - if (ret < 0) - goto error_link; - - ret = media_create_pad_link( - &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP, - &isp->isp_prev.subdev.entity, PREV_PAD_SINK, 0); - if (ret < 0) - goto error_link; - - ret = media_create_pad_link( - &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_OF, - &isp->isp_res.subdev.entity, RESZ_PAD_SINK, 0); - if (ret < 0) - goto error_link; - - ret = media_create_pad_link( - &isp->isp_prev.subdev.entity, PREV_PAD_SOURCE, - &isp->isp_res.subdev.entity, RESZ_PAD_SINK, 0); - if (ret < 0) - goto error_link; - - ret = media_create_pad_link( - &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP, - &isp->isp_aewb.subdev.entity, 0, - MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE); - if (ret < 0) - goto error_link; - - ret = media_create_pad_link( - &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP, - &isp->isp_af.subdev.entity, 0, - MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE); - if (ret < 0) - goto error_link; - - ret = media_create_pad_link( - &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_VP, - &isp->isp_hist.subdev.entity, 0, - MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE); - if (ret < 0) - goto error_link; - return 0; -error_link: - omap3isp_h3a_af_cleanup(isp); error_h3a_af: omap3isp_h3a_aewb_cleanup(isp); error_h3a_aewb: @@ -2468,6 +2508,10 @@ static int isp_probe(struct platform_device *pdev) if (ret < 0) goto error_modules; + ret = isp_create_pads_links(isp); + if (ret < 0) + goto error_register_entities; + isp->notifier.bound = isp_subdev_notifier_bound; isp->notifier.complete = isp_subdev_notifier_complete; diff --git a/drivers/media/platform/omap3isp/ispccdc.c b/drivers/media/platform/omap3isp/ispccdc.c index 27555e4f4aa82d..9a811f5741fa2c 100644 --- a/drivers/media/platform/omap3isp/ispccdc.c +++ b/drivers/media/platform/omap3isp/ispccdc.c @@ -2666,16 +2666,8 @@ static int ccdc_init_entities(struct isp_ccdc_device *ccdc) if (ret < 0) goto error_video; - /* Connect the CCDC subdev to the video node. */ - ret = media_create_pad_link(&ccdc->subdev.entity, CCDC_PAD_SOURCE_OF, - &ccdc->video_out.video.entity, 0, 0); - if (ret < 0) - goto error_link; - return 0; -error_link: - omap3isp_video_cleanup(&ccdc->video_out); error_video: media_entity_cleanup(me); return ret; @@ -2720,6 +2712,20 @@ int omap3isp_ccdc_init(struct isp_device *isp) return 0; } +/* + * omap3isp_ccdc_create_pads_links - CCDC pads links creation + * @isp : Pointer to ISP device + * return negative error code or zero on success + */ +int omap3isp_ccdc_create_pads_links(struct isp_device *isp) +{ + struct isp_ccdc_device *ccdc = &isp->isp_ccdc; + + /* Connect the CCDC subdev to the video node. */ + return media_create_pad_link(&ccdc->subdev.entity, CCDC_PAD_SOURCE_OF, + &ccdc->video_out.video.entity, 0, 0); +} + /* * omap3isp_ccdc_cleanup - CCDC module cleanup. * @isp: Device pointer specific to the OMAP3 ISP. diff --git a/drivers/media/platform/omap3isp/ispccdc.h b/drivers/media/platform/omap3isp/ispccdc.h index 3440a709794001..2128203ef6fb37 100644 --- a/drivers/media/platform/omap3isp/ispccdc.h +++ b/drivers/media/platform/omap3isp/ispccdc.h @@ -163,6 +163,7 @@ struct isp_ccdc_device { struct isp_device; int omap3isp_ccdc_init(struct isp_device *isp); +int omap3isp_ccdc_create_pads_links(struct isp_device *isp); void omap3isp_ccdc_cleanup(struct isp_device *isp); int omap3isp_ccdc_register_entities(struct isp_ccdc_device *ccdc, struct v4l2_device *vdev); diff --git a/drivers/media/platform/omap3isp/ispccp2.c b/drivers/media/platform/omap3isp/ispccp2.c index b215eb5049d65a..6ec7d104ab75f5 100644 --- a/drivers/media/platform/omap3isp/ispccp2.c +++ b/drivers/media/platform/omap3isp/ispccp2.c @@ -1099,16 +1099,8 @@ static int ccp2_init_entities(struct isp_ccp2_device *ccp2) if (ret < 0) goto error_video; - /* Connect the video node to the ccp2 subdev. */ - ret = media_create_pad_link(&ccp2->video_in.video.entity, 0, - &ccp2->subdev.entity, CCP2_PAD_SINK, 0); - if (ret < 0) - goto error_link; - return 0; -error_link: - omap3isp_video_cleanup(&ccp2->video_in); error_video: media_entity_cleanup(&ccp2->subdev.entity); return ret; @@ -1156,6 +1148,20 @@ int omap3isp_ccp2_init(struct isp_device *isp) return 0; } +/* + * omap3isp_ccp2_create_pads_links - CCP2 pads links creation + * @isp : Pointer to ISP device + * return negative error code or zero on success + */ +int omap3isp_ccp2_create_pads_links(struct isp_device *isp) +{ + struct isp_ccp2_device *ccp2 = &isp->isp_ccp2; + + /* Connect the video node to the ccp2 subdev. */ + return media_create_pad_link(&ccp2->video_in.video.entity, 0, + &ccp2->subdev.entity, CCP2_PAD_SINK, 0); +} + /* * omap3isp_ccp2_cleanup - CCP2 un-initialization * @isp : Pointer to ISP device diff --git a/drivers/media/platform/omap3isp/ispccp2.h b/drivers/media/platform/omap3isp/ispccp2.h index 4662bffa79e31a..fb74bc67878b1d 100644 --- a/drivers/media/platform/omap3isp/ispccp2.h +++ b/drivers/media/platform/omap3isp/ispccp2.h @@ -79,6 +79,7 @@ struct isp_ccp2_device { /* Function declarations */ int omap3isp_ccp2_init(struct isp_device *isp); +int omap3isp_ccp2_create_pads_links(struct isp_device *isp); void omap3isp_ccp2_cleanup(struct isp_device *isp); int omap3isp_ccp2_register_entities(struct isp_ccp2_device *ccp2, struct v4l2_device *vdev); diff --git a/drivers/media/platform/omap3isp/ispcsi2.c b/drivers/media/platform/omap3isp/ispcsi2.c index fcefc1e74881f6..0fb057a74f69ed 100644 --- a/drivers/media/platform/omap3isp/ispcsi2.c +++ b/drivers/media/platform/omap3isp/ispcsi2.c @@ -1264,16 +1264,8 @@ static int csi2_init_entities(struct isp_csi2_device *csi2) if (ret < 0) goto error_video; - /* Connect the CSI2 subdev to the video node. */ - ret = media_create_pad_link(&csi2->subdev.entity, CSI2_PAD_SOURCE, - &csi2->video_out.video.entity, 0, 0); - if (ret < 0) - goto error_link; - return 0; -error_link: - omap3isp_video_cleanup(&csi2->video_out); error_video: media_entity_cleanup(&csi2->subdev.entity); return ret; @@ -1313,6 +1305,20 @@ int omap3isp_csi2_init(struct isp_device *isp) return 0; } +/* + * omap3isp_csi2_create_pads_links - CSI2 pads links creation + * @isp : Pointer to ISP device + * return negative error code or zero on success + */ +int omap3isp_csi2_create_pads_links(struct isp_device *isp) +{ + struct isp_csi2_device *csi2a = &isp->isp_csi2a; + + /* Connect the CSI2 subdev to the video node. */ + return media_create_pad_link(&csi2a->subdev.entity, CSI2_PAD_SOURCE, + &csi2a->video_out.video.entity, 0, 0); +} + /* * omap3isp_csi2_cleanup - Routine for module driver cleanup */ diff --git a/drivers/media/platform/omap3isp/ispcsi2.h b/drivers/media/platform/omap3isp/ispcsi2.h index 453ed62fe3946c..452ee239c7d77f 100644 --- a/drivers/media/platform/omap3isp/ispcsi2.h +++ b/drivers/media/platform/omap3isp/ispcsi2.h @@ -148,6 +148,7 @@ struct isp_csi2_device { void omap3isp_csi2_isr(struct isp_csi2_device *csi2); int omap3isp_csi2_reset(struct isp_csi2_device *csi2); int omap3isp_csi2_init(struct isp_device *isp); +int omap3isp_csi2_create_pads_links(struct isp_device *isp); void omap3isp_csi2_cleanup(struct isp_device *isp); void omap3isp_csi2_unregister_entities(struct isp_csi2_device *csi2); int omap3isp_csi2_register_entities(struct isp_csi2_device *csi2, diff --git a/drivers/media/platform/omap3isp/isppreview.c b/drivers/media/platform/omap3isp/isppreview.c index ad38d20c777025..6986d2f65c19cd 100644 --- a/drivers/media/platform/omap3isp/isppreview.c +++ b/drivers/media/platform/omap3isp/isppreview.c @@ -2311,21 +2311,8 @@ static int preview_init_entities(struct isp_prev_device *prev) if (ret < 0) goto error_video_out; - /* Connect the video nodes to the previewer subdev. */ - ret = media_create_pad_link(&prev->video_in.video.entity, 0, - &prev->subdev.entity, PREV_PAD_SINK, 0); - if (ret < 0) - goto error_link; - - ret = media_create_pad_link(&prev->subdev.entity, PREV_PAD_SOURCE, - &prev->video_out.video.entity, 0, 0); - if (ret < 0) - goto error_link; - return 0; -error_link: - omap3isp_video_cleanup(&prev->video_out); error_video_out: omap3isp_video_cleanup(&prev->video_in); error_video_in: @@ -2349,6 +2336,26 @@ int omap3isp_preview_init(struct isp_device *isp) return preview_init_entities(prev); } +/* + * omap3isp_preview_create_pads_links - Previewer pads links creation + * @isp : Pointer to ISP device + * return negative error code or zero on success + */ +int omap3isp_preview_create_pads_links(struct isp_device *isp) +{ + struct isp_prev_device *prev = &isp->isp_prev; + int ret; + + /* Connect the video nodes to the previewer subdev. */ + ret = media_create_pad_link(&prev->video_in.video.entity, 0, + &prev->subdev.entity, PREV_PAD_SINK, 0); + if (ret < 0) + return ret; + + return media_create_pad_link(&prev->subdev.entity, PREV_PAD_SOURCE, + &prev->video_out.video.entity, 0, 0); +} + void omap3isp_preview_cleanup(struct isp_device *isp) { struct isp_prev_device *prev = &isp->isp_prev; diff --git a/drivers/media/platform/omap3isp/isppreview.h b/drivers/media/platform/omap3isp/isppreview.h index 16fdc03a3d43bf..f3593b7cecc712 100644 --- a/drivers/media/platform/omap3isp/isppreview.h +++ b/drivers/media/platform/omap3isp/isppreview.h @@ -148,6 +148,7 @@ struct isp_prev_device { struct isp_device; int omap3isp_preview_init(struct isp_device *isp); +int omap3isp_preview_create_pads_links(struct isp_device *isp); void omap3isp_preview_cleanup(struct isp_device *isp); int omap3isp_preview_register_entities(struct isp_prev_device *prv, diff --git a/drivers/media/platform/omap3isp/ispresizer.c b/drivers/media/platform/omap3isp/ispresizer.c index b48ad4d4b83491..249af7f524f906 100644 --- a/drivers/media/platform/omap3isp/ispresizer.c +++ b/drivers/media/platform/omap3isp/ispresizer.c @@ -1755,21 +1755,8 @@ static int resizer_init_entities(struct isp_res_device *res) res->video_out.video.entity.flags |= MEDIA_ENT_FL_DEFAULT; - /* Connect the video nodes to the resizer subdev. */ - ret = media_create_pad_link(&res->video_in.video.entity, 0, - &res->subdev.entity, RESZ_PAD_SINK, 0); - if (ret < 0) - goto error_link; - - ret = media_create_pad_link(&res->subdev.entity, RESZ_PAD_SOURCE, - &res->video_out.video.entity, 0, 0); - if (ret < 0) - goto error_link; - return 0; -error_link: - omap3isp_video_cleanup(&res->video_out); error_video_out: omap3isp_video_cleanup(&res->video_in); error_video_in: @@ -1793,6 +1780,26 @@ int omap3isp_resizer_init(struct isp_device *isp) return resizer_init_entities(res); } +/* + * omap3isp_resizer_create_pads_links - Resizer pads links creation + * @isp : Pointer to ISP device + * return negative error code or zero on success + */ +int omap3isp_resizer_create_pads_links(struct isp_device *isp) +{ + struct isp_res_device *res = &isp->isp_res; + int ret; + + /* Connect the video nodes to the resizer subdev. */ + ret = media_create_pad_link(&res->video_in.video.entity, 0, + &res->subdev.entity, RESZ_PAD_SINK, 0); + if (ret < 0) + return ret; + + return media_create_pad_link(&res->subdev.entity, RESZ_PAD_SOURCE, + &res->video_out.video.entity, 0, 0); +} + void omap3isp_resizer_cleanup(struct isp_device *isp) { struct isp_res_device *res = &isp->isp_res; diff --git a/drivers/media/platform/omap3isp/ispresizer.h b/drivers/media/platform/omap3isp/ispresizer.h index 5414542912e272..8b9fdcdab73d89 100644 --- a/drivers/media/platform/omap3isp/ispresizer.h +++ b/drivers/media/platform/omap3isp/ispresizer.h @@ -119,6 +119,7 @@ struct isp_res_device { struct isp_device; int omap3isp_resizer_init(struct isp_device *isp); +int omap3isp_resizer_create_pads_links(struct isp_device *isp); void omap3isp_resizer_cleanup(struct isp_device *isp); int omap3isp_resizer_register_entities(struct isp_res_device *res, -- cgit 1.2.3-korg From 68a57fa93a9f7776ab502db389469dd1ac6a1c66 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Fri, 28 Aug 2015 06:28:33 -0300 Subject: [media] omap3isp: create links after all subdevs have been bound The omap3isp driver parses the graph endpoints to know how many subdevices needs to be registered async and register notifiers callbacks for to know when these are bound and when the async registrations are completed. Currently the entities pad are linked with the correct ISP input interface when the subdevs are bound but it happens before entitities are registered with the media device so that won't work now that the entity links list is initialized on device registration. So instead creating the pad links when the subdevice is bound, create them on the complete callback once all the subdevices have been bound but only try to create for the ones that have a bus configuration set during bound. Signed-off-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/omap3isp/isp.c | 23 +++++++++++++++-------- 1 file changed, 15 insertions(+), 8 deletions(-) diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c index b8f6f81d2db233..69e7733d36cd0f 100644 --- a/drivers/media/platform/omap3isp/isp.c +++ b/drivers/media/platform/omap3isp/isp.c @@ -2321,26 +2321,33 @@ static int isp_subdev_notifier_bound(struct v4l2_async_notifier *async, struct v4l2_subdev *subdev, struct v4l2_async_subdev *asd) { - struct isp_device *isp = container_of(async, struct isp_device, - notifier); struct isp_async_subdev *isd = container_of(asd, struct isp_async_subdev, asd); - int ret; - - ret = isp_link_entity(isp, &subdev->entity, isd->bus.interface); - if (ret < 0) - return ret; isd->sd = subdev; isd->sd->host_priv = &isd->bus; - return ret; + return 0; } static int isp_subdev_notifier_complete(struct v4l2_async_notifier *async) { struct isp_device *isp = container_of(async, struct isp_device, notifier); + struct v4l2_device *v4l2_dev = &isp->v4l2_dev; + struct v4l2_subdev *sd; + struct isp_bus_cfg *bus; + int ret; + + list_for_each_entry(sd, &v4l2_dev->subdevs, list) { + /* Only try to link entities whose interface was set on bound */ + if (sd->host_priv) { + bus = (struct isp_bus_cfg *)sd->host_priv; + ret = isp_link_entity(isp, &sd->entity, bus->interface); + if (ret < 0) + return ret; + } + } return v4l2_device_register_subdev_nodes(&isp->v4l2_dev); } -- cgit 1.2.3-korg From 5837ceea11ca11339e49947aacbccb62f3646993 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Wed, 2 Sep 2015 11:28:08 -0300 Subject: [media] staging: omap4iss: separate links creation from entities init The omap4iss driver initializes the entities and creates the pads links before the entities are registered with the media device. This does not work now that object IDs are used to create links so the media_device has to be set. Split out the pads links creation from the entity initialization so are made after the entities registration. Signed-off-by: Javier Martinez Canillas Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/media/omap4iss/iss.c | 101 ++++++++++++++++++--------- drivers/staging/media/omap4iss/iss_csi2.c | 35 +++++++--- drivers/staging/media/omap4iss/iss_csi2.h | 1 + drivers/staging/media/omap4iss/iss_ipipeif.c | 29 ++++---- drivers/staging/media/omap4iss/iss_ipipeif.h | 1 + drivers/staging/media/omap4iss/iss_resizer.c | 29 ++++---- drivers/staging/media/omap4iss/iss_resizer.h | 1 + 7 files changed, 132 insertions(+), 65 deletions(-) diff --git a/drivers/staging/media/omap4iss/iss.c b/drivers/staging/media/omap4iss/iss.c index b405dc93d90ac0..fa761669fd863e 100644 --- a/drivers/staging/media/omap4iss/iss.c +++ b/drivers/staging/media/omap4iss/iss.c @@ -1274,6 +1274,68 @@ done: return ret; } +/* + * iss_create_pads_links() - Pads links creation for the subdevices + * @iss : Pointer to ISS device + * + * return negative error code or zero on success + */ +static int iss_create_pads_links(struct iss_device *iss) +{ + int ret; + + ret = omap4iss_csi2_create_pads_links(iss); + if (ret < 0) { + dev_err(iss->dev, "CSI2 pads links creation failed\n"); + return ret; + } + + ret = omap4iss_ipipeif_create_pads_links(iss); + if (ret < 0) { + dev_err(iss->dev, "ISP IPIPEIF pads links creation failed\n"); + return ret; + } + + ret = omap4iss_resizer_create_pads_links(iss); + if (ret < 0) { + dev_err(iss->dev, "ISP RESIZER pads links creation failed\n"); + return ret; + } + + /* Connect the submodules. */ + ret = media_create_pad_link( + &iss->csi2a.subdev.entity, CSI2_PAD_SOURCE, + &iss->ipipeif.subdev.entity, IPIPEIF_PAD_SINK, 0); + if (ret < 0) + return ret; + + ret = media_create_pad_link( + &iss->csi2b.subdev.entity, CSI2_PAD_SOURCE, + &iss->ipipeif.subdev.entity, IPIPEIF_PAD_SINK, 0); + if (ret < 0) + return ret; + + ret = media_create_pad_link( + &iss->ipipeif.subdev.entity, IPIPEIF_PAD_SOURCE_VP, + &iss->resizer.subdev.entity, RESIZER_PAD_SINK, 0); + if (ret < 0) + return ret; + + ret = media_create_pad_link( + &iss->ipipeif.subdev.entity, IPIPEIF_PAD_SOURCE_VP, + &iss->ipipe.subdev.entity, IPIPE_PAD_SINK, 0); + if (ret < 0) + return ret; + + ret = media_create_pad_link( + &iss->ipipe.subdev.entity, IPIPE_PAD_SOURCE_VP, + &iss->resizer.subdev.entity, RESIZER_PAD_SINK, 0); + if (ret < 0) + return ret; + + return 0; +}; + static void iss_cleanup_modules(struct iss_device *iss) { omap4iss_csi2_cleanup(iss); @@ -1316,41 +1378,8 @@ static int iss_initialize_modules(struct iss_device *iss) goto error_resizer; } - /* Connect the submodules. */ - ret = media_create_pad_link( - &iss->csi2a.subdev.entity, CSI2_PAD_SOURCE, - &iss->ipipeif.subdev.entity, IPIPEIF_PAD_SINK, 0); - if (ret < 0) - goto error_link; - - ret = media_create_pad_link( - &iss->csi2b.subdev.entity, CSI2_PAD_SOURCE, - &iss->ipipeif.subdev.entity, IPIPEIF_PAD_SINK, 0); - if (ret < 0) - goto error_link; - - ret = media_create_pad_link( - &iss->ipipeif.subdev.entity, IPIPEIF_PAD_SOURCE_VP, - &iss->resizer.subdev.entity, RESIZER_PAD_SINK, 0); - if (ret < 0) - goto error_link; - - ret = media_create_pad_link( - &iss->ipipeif.subdev.entity, IPIPEIF_PAD_SOURCE_VP, - &iss->ipipe.subdev.entity, IPIPE_PAD_SINK, 0); - if (ret < 0) - goto error_link; - - ret = media_create_pad_link( - &iss->ipipe.subdev.entity, IPIPE_PAD_SOURCE_VP, - &iss->resizer.subdev.entity, RESIZER_PAD_SINK, 0); - if (ret < 0) - goto error_link; - return 0; -error_link: - omap4iss_resizer_cleanup(iss); error_resizer: omap4iss_ipipe_cleanup(iss); error_ipipe: @@ -1464,10 +1493,16 @@ static int iss_probe(struct platform_device *pdev) if (ret < 0) goto error_modules; + ret = iss_create_pads_links(iss); + if (ret < 0) + goto error_entities; + omap4iss_put(iss); return 0; +error_entities: + iss_unregister_entities(iss); error_modules: iss_cleanup_modules(iss); error_iss: diff --git a/drivers/staging/media/omap4iss/iss_csi2.c b/drivers/staging/media/omap4iss/iss_csi2.c index c6eb5a7a593f35..13878a27527795 100644 --- a/drivers/staging/media/omap4iss/iss_csi2.c +++ b/drivers/staging/media/omap4iss/iss_csi2.c @@ -1290,16 +1290,8 @@ static int csi2_init_entities(struct iss_csi2_device *csi2, const char *subname) if (ret < 0) goto error_video; - /* Connect the CSI2 subdev to the video node. */ - ret = media_create_pad_link(&csi2->subdev.entity, CSI2_PAD_SOURCE, - &csi2->video_out.video.entity, 0, 0); - if (ret < 0) - goto error_link; - return 0; -error_link: - omap4iss_video_cleanup(&csi2->video_out); error_video: media_entity_cleanup(&csi2->subdev.entity); return ret; @@ -1341,6 +1333,33 @@ int omap4iss_csi2_init(struct iss_device *iss) return 0; } +/* + * omap4iss_csi2_create_pads_links() - CSI2 pads links creation + * @iss: Pointer to ISS device + * + * return negative error code or zero on success + */ +int omap4iss_csi2_create_pads_links(struct iss_device *iss) +{ + struct iss_csi2_device *csi2a = &iss->csi2a; + struct iss_csi2_device *csi2b = &iss->csi2b; + int ret; + + /* Connect the CSI2a subdev to the video node. */ + ret = media_create_pad_link(&csi2a->subdev.entity, CSI2_PAD_SOURCE, + &csi2a->video_out.video.entity, 0, 0); + if (ret < 0) + return ret; + + /* Connect the CSI2b subdev to the video node. */ + ret = media_create_pad_link(&csi2b->subdev.entity, CSI2_PAD_SOURCE, + &csi2b->video_out.video.entity, 0, 0); + if (ret < 0) + return ret; + + return 0; +} + /* * omap4iss_csi2_cleanup - Routine for module driver cleanup */ diff --git a/drivers/staging/media/omap4iss/iss_csi2.h b/drivers/staging/media/omap4iss/iss_csi2.h index f2f5343b4a8009..1d5a0d8222a95f 100644 --- a/drivers/staging/media/omap4iss/iss_csi2.h +++ b/drivers/staging/media/omap4iss/iss_csi2.h @@ -151,6 +151,7 @@ struct iss_csi2_device { void omap4iss_csi2_isr(struct iss_csi2_device *csi2); int omap4iss_csi2_reset(struct iss_csi2_device *csi2); int omap4iss_csi2_init(struct iss_device *iss); +int omap4iss_csi2_create_pads_links(struct iss_device *iss); void omap4iss_csi2_cleanup(struct iss_device *iss); void omap4iss_csi2_unregister_entities(struct iss_csi2_device *csi2); int omap4iss_csi2_register_entities(struct iss_csi2_device *csi2, diff --git a/drivers/staging/media/omap4iss/iss_ipipeif.c b/drivers/staging/media/omap4iss/iss_ipipeif.c index b0c5f2431b6263..82608cbb1f5fa0 100644 --- a/drivers/staging/media/omap4iss/iss_ipipeif.c +++ b/drivers/staging/media/omap4iss/iss_ipipeif.c @@ -757,18 +757,7 @@ static int ipipeif_init_entities(struct iss_ipipeif_device *ipipeif) ipipeif->video_out.bpl_zero_padding = 1; ipipeif->video_out.bpl_max = 0x1ffe0; - ret = omap4iss_video_init(&ipipeif->video_out, "ISP IPIPEIF"); - if (ret < 0) - return ret; - - /* Connect the IPIPEIF subdev to the video node. */ - ret = media_create_pad_link(&ipipeif->subdev.entity, - IPIPEIF_PAD_SOURCE_ISIF_SF, - &ipipeif->video_out.video.entity, 0, 0); - if (ret < 0) - return ret; - - return 0; + return omap4iss_video_init(&ipipeif->video_out, "ISP IPIPEIF"); } void omap4iss_ipipeif_unregister_entities(struct iss_ipipeif_device *ipipeif) @@ -820,6 +809,22 @@ int omap4iss_ipipeif_init(struct iss_device *iss) return ipipeif_init_entities(ipipeif); } +/* + * omap4iss_ipipeif_create_pads_links() - IPIPEIF pads links creation + * @iss: Pointer to ISS device + * + * return negative error code or zero on success + */ +int omap4iss_ipipeif_create_pads_links(struct iss_device *iss) +{ + struct iss_ipipeif_device *ipipeif = &iss->ipipeif; + + /* Connect the IPIPEIF subdev to the video node. */ + return media_create_pad_link(&ipipeif->subdev.entity, + IPIPEIF_PAD_SOURCE_ISIF_SF, + &ipipeif->video_out.video.entity, 0, 0); +} + /* * omap4iss_ipipeif_cleanup - IPIPEIF module cleanup. * @iss: Device pointer specific to the OMAP4 ISS. diff --git a/drivers/staging/media/omap4iss/iss_ipipeif.h b/drivers/staging/media/omap4iss/iss_ipipeif.h index c6bd96d9656cf8..dd906b41cf9be1 100644 --- a/drivers/staging/media/omap4iss/iss_ipipeif.h +++ b/drivers/staging/media/omap4iss/iss_ipipeif.h @@ -78,6 +78,7 @@ struct iss_ipipeif_device { struct iss_device; int omap4iss_ipipeif_init(struct iss_device *iss); +int omap4iss_ipipeif_create_pads_links(struct iss_device *iss); void omap4iss_ipipeif_cleanup(struct iss_device *iss); int omap4iss_ipipeif_register_entities(struct iss_ipipeif_device *ipipeif, struct v4l2_device *vdev); diff --git a/drivers/staging/media/omap4iss/iss_resizer.c b/drivers/staging/media/omap4iss/iss_resizer.c index a2cb57cb460dad..4a474873a8df0d 100644 --- a/drivers/staging/media/omap4iss/iss_resizer.c +++ b/drivers/staging/media/omap4iss/iss_resizer.c @@ -799,18 +799,7 @@ static int resizer_init_entities(struct iss_resizer_device *resizer) resizer->video_out.bpl_zero_padding = 1; resizer->video_out.bpl_max = 0x1ffe0; - ret = omap4iss_video_init(&resizer->video_out, "ISP resizer a"); - if (ret < 0) - return ret; - - /* Connect the RESIZER subdev to the video node. */ - ret = media_create_pad_link(&resizer->subdev.entity, - RESIZER_PAD_SOURCE_MEM, - &resizer->video_out.video.entity, 0, 0); - if (ret < 0) - return ret; - - return 0; + return omap4iss_video_init(&resizer->video_out, "ISP resizer a"); } void omap4iss_resizer_unregister_entities(struct iss_resizer_device *resizer) @@ -862,6 +851,22 @@ int omap4iss_resizer_init(struct iss_device *iss) return resizer_init_entities(resizer); } +/* + * omap4iss_resizer_create_pads_links() - RESIZER pads links creation + * @iss: Pointer to ISS device + * + * return negative error code or zero on success + */ +int omap4iss_resizer_create_pads_links(struct iss_device *iss) +{ + struct iss_resizer_device *resizer = &iss->resizer; + + /* Connect the RESIZER subdev to the video node. */ + return media_create_pad_link(&resizer->subdev.entity, + RESIZER_PAD_SOURCE_MEM, + &resizer->video_out.video.entity, 0, 0); +} + /* * omap4iss_resizer_cleanup - RESIZER module cleanup. * @iss: Device pointer specific to the OMAP4 ISS. diff --git a/drivers/staging/media/omap4iss/iss_resizer.h b/drivers/staging/media/omap4iss/iss_resizer.h index 1e145abafc6562..98ab950253d0f9 100644 --- a/drivers/staging/media/omap4iss/iss_resizer.h +++ b/drivers/staging/media/omap4iss/iss_resizer.h @@ -61,6 +61,7 @@ struct iss_resizer_device { struct iss_device; int omap4iss_resizer_init(struct iss_device *iss); +int omap4iss_resizer_create_pads_links(struct iss_device *iss); void omap4iss_resizer_cleanup(struct iss_device *iss); int omap4iss_resizer_register_entities(struct iss_resizer_device *resizer, struct v4l2_device *vdev); -- cgit 1.2.3-korg From 7213fe7eec174fb2b958ecc3ce04a6f811c2d4da Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Thu, 3 Sep 2015 11:20:34 -0300 Subject: [media] v4l: vsp1: create pad links after subdev registration The vsp1 driver creates the pads links before the media entities are registered with the media device. This doesn't work now that object IDs are used to create links so the media_device has to be set. Move entities registration logic before pads links creation. Signed-off-by: Javier Martinez Canillas Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/vsp1/vsp1_drv.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/media/platform/vsp1/vsp1_drv.c b/drivers/media/platform/vsp1/vsp1_drv.c index 9cd94a76a9ed2b..2aa427d3ff3972 100644 --- a/drivers/media/platform/vsp1/vsp1_drv.c +++ b/drivers/media/platform/vsp1/vsp1_drv.c @@ -250,6 +250,14 @@ static int vsp1_create_entities(struct vsp1_device *vsp1) list_add_tail(&wpf->entity.list_dev, &vsp1->entities); } + /* Register all subdevs. */ + list_for_each_entry(entity, &vsp1->entities, list_dev) { + ret = v4l2_device_register_subdev(&vsp1->v4l2_dev, + &entity->subdev); + if (ret < 0) + goto done; + } + /* Create links. */ list_for_each_entry(entity, &vsp1->entities, list_dev) { if (entity->type == VSP1_ENTITY_LIF || @@ -269,14 +277,6 @@ static int vsp1_create_entities(struct vsp1_device *vsp1) return ret; } - /* Register all subdevs. */ - list_for_each_entry(entity, &vsp1->entities, list_dev) { - ret = v4l2_device_register_subdev(&vsp1->v4l2_dev, - &entity->subdev); - if (ret < 0) - goto done; - } - ret = v4l2_device_register_subdev_nodes(&vsp1->v4l2_dev); done: -- cgit 1.2.3-korg From c7621b3044f705dd20019e82a8418491b8080327 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Thu, 3 Sep 2015 12:19:25 -0300 Subject: [media] v4l: vsp1: separate links creation from entities init The vsp1 driver initializes the entities and creates the pads links before the entities are registered with the media device. This doesn't work now that object IDs are used to create links so the media_device has to be set. Split out the pads links creation from the entity initialization so are made after the entities registration. Signed-off-by: Javier Martinez Canillas Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/vsp1/vsp1_drv.c | 14 ++++++++++-- drivers/media/platform/vsp1/vsp1_rpf.c | 29 ++++++++++++++++-------- drivers/media/platform/vsp1/vsp1_rwpf.h | 5 +++++ drivers/media/platform/vsp1/vsp1_wpf.c | 40 ++++++++++++++++++++------------- 4 files changed, 62 insertions(+), 26 deletions(-) diff --git a/drivers/media/platform/vsp1/vsp1_drv.c b/drivers/media/platform/vsp1/vsp1_drv.c index 2aa427d3ff3972..8f995d26764672 100644 --- a/drivers/media/platform/vsp1/vsp1_drv.c +++ b/drivers/media/platform/vsp1/vsp1_drv.c @@ -260,9 +260,19 @@ static int vsp1_create_entities(struct vsp1_device *vsp1) /* Create links. */ list_for_each_entry(entity, &vsp1->entities, list_dev) { - if (entity->type == VSP1_ENTITY_LIF || - entity->type == VSP1_ENTITY_RPF) + if (entity->type == VSP1_ENTITY_LIF) { + ret = vsp1_wpf_create_pads_links(vsp1, entity); + if (ret < 0) + goto done; + continue; + } + + if (entity->type == VSP1_ENTITY_RPF) { + ret = vsp1_rpf_create_pads_links(vsp1, entity); + if (ret < 0) + goto done; continue; + } ret = vsp1_create_links(vsp1, entity); if (ret < 0) diff --git a/drivers/media/platform/vsp1/vsp1_rpf.c b/drivers/media/platform/vsp1/vsp1_rpf.c index 1bd51d22ff0446..847fb6d01a5ad8 100644 --- a/drivers/media/platform/vsp1/vsp1_rpf.c +++ b/drivers/media/platform/vsp1/vsp1_rpf.c @@ -277,18 +277,29 @@ struct vsp1_rwpf *vsp1_rpf_create(struct vsp1_device *vsp1, unsigned int index) rpf->entity.video = video; - /* Connect the video device to the RPF. */ - ret = media_create_pad_link(&rpf->video.video.entity, 0, - &rpf->entity.subdev.entity, - RWPF_PAD_SINK, - MEDIA_LNK_FL_ENABLED | - MEDIA_LNK_FL_IMMUTABLE); - if (ret < 0) - goto error; - return rpf; error: vsp1_entity_destroy(&rpf->entity); return ERR_PTR(ret); } + +/* + * vsp1_rpf_create_pads_links_create_pads_links() - RPF pads links creation + * @vsp1: Pointer to VSP1 device + * @entity: Pointer to VSP1 entity + * + * return negative error code or zero on success + */ +int vsp1_rpf_create_pads_links(struct vsp1_device *vsp1, + struct vsp1_entity *entity) +{ + struct vsp1_rwpf *rpf = to_rwpf(&entity->subdev); + + /* Connect the video device to the RPF. */ + return media_create_pad_link(&rpf->video.video.entity, 0, + &rpf->entity.subdev.entity, + RWPF_PAD_SINK, + MEDIA_LNK_FL_ENABLED | + MEDIA_LNK_FL_IMMUTABLE); +} diff --git a/drivers/media/platform/vsp1/vsp1_rwpf.h b/drivers/media/platform/vsp1/vsp1_rwpf.h index f452dce1a931d6..6638b358736934 100644 --- a/drivers/media/platform/vsp1/vsp1_rwpf.h +++ b/drivers/media/platform/vsp1/vsp1_rwpf.h @@ -50,6 +50,11 @@ static inline struct vsp1_rwpf *to_rwpf(struct v4l2_subdev *subdev) struct vsp1_rwpf *vsp1_rpf_create(struct vsp1_device *vsp1, unsigned int index); struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index); +int vsp1_rpf_create_pads_links(struct vsp1_device *vsp1, + struct vsp1_entity *entity); +int vsp1_wpf_create_pads_links(struct vsp1_device *vsp1, + struct vsp1_entity *entity); + int vsp1_rwpf_enum_mbus_code(struct v4l2_subdev *subdev, struct v4l2_subdev_pad_config *cfg, struct v4l2_subdev_mbus_code_enum *code); diff --git a/drivers/media/platform/vsp1/vsp1_wpf.c b/drivers/media/platform/vsp1/vsp1_wpf.c index ca19c534dac6de..969278bc1d412d 100644 --- a/drivers/media/platform/vsp1/vsp1_wpf.c +++ b/drivers/media/platform/vsp1/vsp1_wpf.c @@ -220,7 +220,6 @@ struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index) struct v4l2_subdev *subdev; struct vsp1_video *video; struct vsp1_rwpf *wpf; - unsigned int flags; int ret; wpf = devm_kzalloc(vsp1->dev, sizeof(*wpf), GFP_KERNEL); @@ -276,20 +275,6 @@ struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index) goto error; wpf->entity.video = video; - - /* Connect the video device to the WPF. All connections are immutable - * except for the WPF0 source link if a LIF is present. - */ - flags = MEDIA_LNK_FL_ENABLED; - if (!(vsp1->pdata.features & VSP1_HAS_LIF) || index != 0) - flags |= MEDIA_LNK_FL_IMMUTABLE; - - ret = media_create_pad_link(&wpf->entity.subdev.entity, - RWPF_PAD_SOURCE, - &wpf->video.video.entity, 0, flags); - if (ret < 0) - goto error; - wpf->entity.sink = &wpf->video.video.entity; return wpf; @@ -298,3 +283,28 @@ error: vsp1_entity_destroy(&wpf->entity); return ERR_PTR(ret); } + +/* + * vsp1_wpf_create_pads_links_create_pads_links() - RPF pads links creation + * @vsp1: Pointer to VSP1 device + * @entity: Pointer to VSP1 entity + * + * return negative error code or zero on success + */ +int vsp1_wpf_create_pads_links(struct vsp1_device *vsp1, + struct vsp1_entity *entity) +{ + struct vsp1_rwpf *wpf = to_rwpf(&entity->subdev); + unsigned int flags; + + /* Connect the video device to the WPF. All connections are immutable + * except for the WPF0 source link if a LIF is present. + */ + flags = MEDIA_LNK_FL_ENABLED; + if (!(vsp1->pdata.features & VSP1_HAS_LIF) || entity->index != 0) + flags |= MEDIA_LNK_FL_IMMUTABLE; + + return media_create_pad_link(&wpf->entity.subdev.entity, + RWPF_PAD_SOURCE, + &wpf->video.video.entity, 0, flags); +} -- cgit 1.2.3-korg From c5a98cac6ecd78ca647c41cb25e3ea1835579d70 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Thu, 3 Sep 2015 08:46:06 -0300 Subject: [media] uvcvideo: create pad links after subdev registration The uvc driver creates the pads links before the media entity is registered with the media device. This doesn't work now that obj IDs are used to create links so the media_device has to be set. Move entities registration logic before pads links creation. Signed-off-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/uvc/uvc_entity.c | 23 +++++++++++++++++++---- 1 file changed, 19 insertions(+), 4 deletions(-) diff --git a/drivers/media/usb/uvc/uvc_entity.c b/drivers/media/usb/uvc/uvc_entity.c index 429e428ccd93ff..7f82b65b238e12 100644 --- a/drivers/media/usb/uvc/uvc_entity.c +++ b/drivers/media/usb/uvc/uvc_entity.c @@ -25,6 +25,15 @@ static int uvc_mc_register_entity(struct uvc_video_chain *chain, struct uvc_entity *entity) +{ + if (UVC_ENTITY_TYPE(entity) == UVC_TT_STREAMING) + return 0; + + return v4l2_device_register_subdev(&chain->dev->vdev, &entity->subdev); +} + +static int uvc_mc_create_pads_links(struct uvc_video_chain *chain, + struct uvc_entity *entity) { const u32 flags = MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE; struct media_entity *sink; @@ -62,10 +71,7 @@ static int uvc_mc_register_entity(struct uvc_video_chain *chain, return ret; } - if (UVC_ENTITY_TYPE(entity) == UVC_TT_STREAMING) - return 0; - - return v4l2_device_register_subdev(&chain->dev->vdev, &entity->subdev); + return 0; } static struct v4l2_subdev_ops uvc_subdev_ops = { @@ -124,5 +130,14 @@ int uvc_mc_register_entities(struct uvc_video_chain *chain) } } + list_for_each_entry(entity, &chain->entities, chain) { + ret = uvc_mc_create_pads_links(chain, entity); + if (ret < 0) { + uvc_printk(KERN_INFO, "Failed to create pads links for " + "entity %u\n", entity->id); + return ret; + } + } + return 0; } -- cgit 1.2.3-korg From ada58ced508ffb75ff59f23b726ffc79ac2282fe Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Thu, 3 Sep 2015 09:00:27 -0300 Subject: [media] smiapp: create pad links after subdev registration The smiapp driver creates the pads links before the media entity is registered with the media device. This doesn't work now that object IDs are used to create links so the media_device has to be set. Move entity registration logic before pads links creation. Signed-off-by: Javier Martinez Canillas Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/i2c/smiapp/smiapp-core.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c index cf0cd507c2d0c3..df4f8824c344ba 100644 --- a/drivers/media/i2c/smiapp/smiapp-core.c +++ b/drivers/media/i2c/smiapp/smiapp-core.c @@ -2495,23 +2495,23 @@ static int smiapp_register_subdevs(struct smiapp_sensor *sensor) return rval; } - rval = media_create_pad_link(&this->sd.entity, - this->source_pad, - &last->sd.entity, - last->sink_pad, - MEDIA_LNK_FL_ENABLED | - MEDIA_LNK_FL_IMMUTABLE); + rval = v4l2_device_register_subdev(sensor->src->sd.v4l2_dev, + &this->sd); if (rval) { dev_err(&client->dev, - "media_create_pad_link failed\n"); + "v4l2_device_register_subdev failed\n"); return rval; } - rval = v4l2_device_register_subdev(sensor->src->sd.v4l2_dev, - &this->sd); + rval = media_create_pad_link(&this->sd.entity, + this->source_pad, + &last->sd.entity, + last->sink_pad, + MEDIA_LNK_FL_ENABLED | + MEDIA_LNK_FL_IMMUTABLE); if (rval) { dev_err(&client->dev, - "v4l2_device_register_subdev failed\n"); + "media_create_pad_link failed\n"); return rval; } } -- cgit 1.2.3-korg From 8f6d368f726bb4fa069af5ef5806f15ba6da6ad8 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 19 Aug 2015 20:18:35 -0300 Subject: [media] media: Don't accept early-created links Links are graph objects that represent the links of two already existing objects in the graph. While with the current implementation, it is possible to create the links earlier, It doesn't make any sense to allow linking two objects when they are not both created. So, remove the code that would be handling those early-created links and add a BUG_ON() to ensure that. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 7 ------- drivers/media/media-entity.c | 2 ++ 2 files changed, 2 insertions(+), 7 deletions(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 138b18416460d8..0d85c6c28004d1 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -443,13 +443,6 @@ int __must_check media_device_register_entity(struct media_device *mdev, media_gobj_init(mdev, MEDIA_GRAPH_ENTITY, &entity->graph_obj); list_add_tail(&entity->list, &mdev->entities); - /* - * Initialize objects at the links - * in the case where links got created before entity register - */ - for (i = 0; i < entity->num_links; i++) - media_gobj_init(mdev, MEDIA_GRAPH_LINK, - &entity->links[i].graph_obj); /* Initialize objects at the pads */ for (i = 0; i < entity->num_pads; i++) media_gobj_init(mdev, MEDIA_GRAPH_PAD, diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 160ce2cc0865f4..f85a711d49581f 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -149,6 +149,8 @@ void media_gobj_init(struct media_device *mdev, enum media_gobj_type type, struct media_gobj *gobj) { + BUG_ON(!mdev); + gobj->mdev = mdev; /* Create a per-type unique object ID */ -- cgit 1.2.3-korg From 57208e5e25f263d27ea00e530c95f62071573cb7 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 7 Aug 2015 06:55:40 -0300 Subject: [media] media: convert links from array to list The entire logic that represent graph links were developed on a time where there were no needs to dynamic remove links. So, although links are created/removed one by one via some functions, they're stored as an array inside the entity struct. As the array may grow, there's a logic inside the code that checks if the amount of space is not enough to store the needed links. If it isn't the core uses krealloc() to change the size of the link, with is bad, as it leaves the memory fragmented. So, convert links into a list. Also, currently, both source and sink entities need the link at the graph traversal logic inside media_entity. So there's a logic duplicating all links. That makes it to spend twice the memory needed. This is not a big deal for today's usage, where the number of links are not big. Yet, if during the MC workshop discussions, it was said that IIO graphs could have up to 4,000 entities. So, we may want to remove the duplication on some future. The problem is that it would require a separate linked list to store the backlinks inside the entity, or to use a more complex algorithm to do graph backlink traversal, with is something that the current graph traversal inside the core can't cope with. So, let's postpone a such change if/when it is actually needed. It should also be noticed that the media_link structure uses 44 bytes on 32-bit architectures and 84 bytes on 64-bit architecture. It will thus be allocated out of the 64-bytes and 96-bytes pools respectively. That's a 12.5% memory waste on 64-bit architectures and 31.25% on 32-bit architecture. A linked list is less efficient than an array in this case, but this could later be optimized if we can get rid of the reverse links (with would reduce memory allocation by 50%). Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-core/dvb_frontend.c | 9 +-- drivers/media/media-device.c | 25 +++--- drivers/media/media-entity.c | 128 +++++++++++++++--------------- drivers/media/usb/au0828/au0828-core.c | 12 ++- drivers/media/usb/au0828/au0828-video.c | 8 +- drivers/media/usb/cx231xx/cx231xx-video.c | 8 +- include/media/media-entity.h | 10 +-- 7 files changed, 97 insertions(+), 103 deletions(-) diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c index b64f33776b7402..42ab6aaeed7d11 100644 --- a/drivers/media/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb-core/dvb_frontend.c @@ -622,7 +622,7 @@ static int dvb_enable_media_tuner(struct dvb_frontend *fe) struct media_device *mdev = adapter->mdev; struct media_entity *entity, *source; struct media_link *link, *found_link = NULL; - int i, ret, n_links = 0, active_links = 0; + int ret, n_links = 0, active_links = 0; fepriv->pipe_start_entity = NULL; @@ -632,8 +632,7 @@ static int dvb_enable_media_tuner(struct dvb_frontend *fe) entity = fepriv->dvbdev->entity; fepriv->pipe_start_entity = entity; - for (i = 0; i < entity->num_links; i++) { - link = &entity->links[i]; + list_for_each_entry(link, &entity->links, list) { if (link->sink->entity == entity) { found_link = link; n_links++; @@ -659,13 +658,11 @@ static int dvb_enable_media_tuner(struct dvb_frontend *fe) source = found_link->source->entity; fepriv->pipe_start_entity = source; - for (i = 0; i < source->num_links; i++) { + list_for_each_entry(link, &source->links, list) { struct media_entity *sink; int flags = 0; - link = &source->links[i]; sink = link->sink->entity; - if (sink == entity) flags = MEDIA_LNK_FL_ENABLED; diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 0d85c6c28004d1..3e649cacfc075c 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include @@ -150,22 +151,21 @@ static long __media_device_enum_links(struct media_device *mdev, } if (links->links) { - struct media_link_desc __user *ulink; - unsigned int l; + struct media_link *ent_link; + struct media_link_desc __user *ulink = links->links; - for (l = 0, ulink = links->links; l < entity->num_links; l++) { + list_for_each_entry(ent_link, &entity->links, list) { struct media_link_desc link; /* Ignore backlinks. */ - if (entity->links[l].source->entity != entity) + if (ent_link->source->entity != entity) continue; - memset(&link, 0, sizeof(link)); - media_device_kpad_to_upad(entity->links[l].source, + media_device_kpad_to_upad(ent_link->source, &link.source); - media_device_kpad_to_upad(entity->links[l].sink, + media_device_kpad_to_upad(ent_link->sink, &link.sink); - link.flags = entity->links[l].flags; + link.flags = ent_link->flags; if (copy_to_user(ulink, &link, sizeof(*ulink))) return -EFAULT; ulink++; @@ -437,6 +437,7 @@ int __must_check media_device_register_entity(struct media_device *mdev, /* Warn if we apparently re-register an entity */ WARN_ON(entity->graph_obj.mdev != NULL); entity->graph_obj.mdev = mdev; + INIT_LIST_HEAD(&entity->links); spin_lock(&mdev->lock); /* Initialize media_gobj embedded at the entity */ @@ -465,13 +466,17 @@ void media_device_unregister_entity(struct media_entity *entity) { int i; struct media_device *mdev = entity->graph_obj.mdev; + struct media_link *link, *tmp; if (mdev == NULL) return; spin_lock(&mdev->lock); - for (i = 0; i < entity->num_links; i++) - media_gobj_remove(&entity->links[i].graph_obj); + list_for_each_entry_safe(link, tmp, &entity->links, list) { + media_gobj_remove(&link->graph_obj); + list_del(&link->list); + kfree(link); + } for (i = 0; i < entity->num_pads; i++) media_gobj_remove(&entity->pads[i].graph_obj); media_gobj_remove(&entity->graph_obj); diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index f85a711d49581f..df110acdb2f689 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -209,21 +209,13 @@ int media_entity_init(struct media_entity *entity, u16 num_pads, struct media_pad *pads) { - struct media_link *links; - unsigned int max_links = num_pads; unsigned int i; - links = kzalloc(max_links * sizeof(links[0]), GFP_KERNEL); - if (links == NULL) - return -ENOMEM; - entity->group_id = 0; - entity->max_links = max_links; entity->num_links = 0; entity->num_backlinks = 0; entity->num_pads = num_pads; entity->pads = pads; - entity->links = links; for (i = 0; i < num_pads; i++) { pads[i].entity = entity; @@ -237,7 +229,13 @@ EXPORT_SYMBOL_GPL(media_entity_init); void media_entity_cleanup(struct media_entity *entity) { - kfree(entity->links); + struct media_link *link, *tmp; + + list_for_each_entry_safe(link, tmp, &entity->links, list) { + media_gobj_remove(&link->graph_obj); + list_del(&link->list); + kfree(link); + } } EXPORT_SYMBOL_GPL(media_entity_cleanup); @@ -263,7 +261,7 @@ static void stack_push(struct media_entity_graph *graph, return; } graph->top++; - graph->stack[graph->top].link = 0; + graph->stack[graph->top].link = (&entity->links)->next; graph->stack[graph->top].entity = entity; } @@ -305,6 +303,7 @@ void media_entity_graph_walk_start(struct media_entity_graph *graph, } EXPORT_SYMBOL_GPL(media_entity_graph_walk_start); + /** * media_entity_graph_walk_next - Get the next entity in the graph * @graph: Media graph structure @@ -328,14 +327,16 @@ media_entity_graph_walk_next(struct media_entity_graph *graph) * top of the stack until no more entities on the level can be * found. */ - while (link_top(graph) < stack_top(graph)->num_links) { + while (link_top(graph) != &(stack_top(graph)->links)) { struct media_entity *entity = stack_top(graph); - struct media_link *link = &entity->links[link_top(graph)]; + struct media_link *link; struct media_entity *next; + link = list_entry(link_top(graph), typeof(*link), list); + /* The link is not enabled so we do not follow. */ if (!(link->flags & MEDIA_LNK_FL_ENABLED)) { - link_top(graph)++; + link_top(graph) = link_top(graph)->next; continue; } @@ -346,12 +347,12 @@ media_entity_graph_walk_next(struct media_entity_graph *graph) /* Has the entity already been visited? */ if (__test_and_set_bit(media_entity_id(next), graph->entities)) { - link_top(graph)++; + link_top(graph) = link_top(graph)->next; continue; } /* Push the new entity to stack and start over. */ - link_top(graph)++; + link_top(graph) = link_top(graph)->next; stack_push(graph, next); } @@ -383,6 +384,7 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity, struct media_device *mdev = entity->graph_obj.mdev; struct media_entity_graph graph; struct media_entity *entity_err = entity; + struct media_link *link; int ret; mutex_lock(&mdev->graph_mutex); @@ -392,7 +394,6 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity, while ((entity = media_entity_graph_walk_next(&graph))) { DECLARE_BITMAP(active, MEDIA_ENTITY_MAX_PADS); DECLARE_BITMAP(has_no_links, MEDIA_ENTITY_MAX_PADS); - unsigned int i; entity->stream_count++; WARN_ON(entity->pipe && entity->pipe != pipe); @@ -408,8 +409,7 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity, bitmap_zero(active, entity->num_pads); bitmap_fill(has_no_links, entity->num_pads); - for (i = 0; i < entity->num_links; i++) { - struct media_link *link = &entity->links[i]; + list_for_each_entry(link, &entity->links, list) { struct media_pad *pad = link->sink->entity == entity ? link->sink : link->source; @@ -570,25 +570,20 @@ EXPORT_SYMBOL_GPL(media_entity_put); static struct media_link *media_entity_add_link(struct media_entity *entity) { - if (entity->num_links >= entity->max_links) { - struct media_link *links = entity->links; - unsigned int max_links = entity->max_links + 2; - unsigned int i; - - links = krealloc(links, max_links * sizeof(*links), GFP_KERNEL); - if (links == NULL) - return NULL; + struct media_link *link; - for (i = 0; i < entity->num_links; i++) - links[i].reverse->reverse = &links[i]; + link = kzalloc(sizeof(*link), GFP_KERNEL); + if (link == NULL) + return NULL; - entity->max_links = max_links; - entity->links = links; - } + list_add_tail(&link->list, &entity->links); - return &entity->links[entity->num_links++]; + return link; } +static void __media_entity_remove_link(struct media_entity *entity, + struct media_link *link); + int media_create_pad_link(struct media_entity *source, u16 source_pad, struct media_entity *sink, u16 sink_pad, u32 flags) @@ -617,7 +612,7 @@ media_create_pad_link(struct media_entity *source, u16 source_pad, */ backlink = media_entity_add_link(sink); if (backlink == NULL) { - source->num_links--; + __media_entity_remove_link(source, link); return -ENOMEM; } @@ -633,43 +628,51 @@ media_create_pad_link(struct media_entity *source, u16 source_pad, backlink->reverse = link; sink->num_backlinks++; + sink->num_links++; + source->num_links++; return 0; } EXPORT_SYMBOL_GPL(media_create_pad_link); -void __media_entity_remove_links(struct media_entity *entity) +static void __media_entity_remove_link(struct media_entity *entity, + struct media_link *link) { - unsigned int i; + struct media_link *rlink, *tmp; + struct media_entity *remote; + unsigned int r = 0; + + if (link->source->entity == entity) + remote = link->sink->entity; + else + remote = link->source->entity; - for (i = 0; i < entity->num_links; i++) { - struct media_link *link = &entity->links[i]; - struct media_entity *remote; - unsigned int r = 0; + list_for_each_entry_safe(rlink, tmp, &remote->links, list) { + if (rlink != link->reverse) { + r++; + continue; + } if (link->source->entity == entity) - remote = link->sink->entity; - else - remote = link->source->entity; + remote->num_backlinks--; - while (r < remote->num_links) { - struct media_link *rlink = &remote->links[r]; - - if (rlink != link->reverse) { - r++; - continue; - } + if (--remote->num_links == 0) + break; - if (link->source->entity == entity) - remote->num_backlinks--; + /* Remove the remote link */ + list_del(&rlink->list); + kfree(rlink); + } + list_del(&link->list); + kfree(link); +} - if (--remote->num_links == 0) - break; +void __media_entity_remove_links(struct media_entity *entity) +{ + struct media_link *link, *tmp; - /* Insert last entry in place of the dropped link. */ - *rlink = remote->links[remote->num_links]; - } - } + list_for_each_entry_safe(link, tmp, &entity->links, list) + __media_entity_remove_link(entity, link); entity->num_links = 0; entity->num_backlinks = 0; @@ -794,11 +797,8 @@ struct media_link * media_entity_find_link(struct media_pad *source, struct media_pad *sink) { struct media_link *link; - unsigned int i; - - for (i = 0; i < source->entity->num_links; ++i) { - link = &source->entity->links[i]; + list_for_each_entry(link, &source->entity->links, list) { if (link->source->entity == source->entity && link->source->index == source->index && link->sink->entity == sink->entity && @@ -822,11 +822,9 @@ EXPORT_SYMBOL_GPL(media_entity_find_link); */ struct media_pad *media_entity_remote_pad(struct media_pad *pad) { - unsigned int i; - - for (i = 0; i < pad->entity->num_links; i++) { - struct media_link *link = &pad->entity->links[i]; + struct media_link *link; + list_for_each_entry(link, &pad->entity->links, list) { if (!(link->flags & MEDIA_LNK_FL_ENABLED)) continue; diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c index a55eb524ea21f5..7f645bcb746391 100644 --- a/drivers/media/usb/au0828/au0828-core.c +++ b/drivers/media/usb/au0828/au0828-core.c @@ -261,13 +261,11 @@ static void au0828_create_media_graph(struct au0828_dev *dev) if (tuner) media_create_pad_link(tuner, 0, decoder, 0, - MEDIA_LNK_FL_ENABLED); - if (dev->vdev.entity.links) - media_create_pad_link(decoder, 1, &dev->vdev.entity, 0, - MEDIA_LNK_FL_ENABLED); - if (dev->vbi_dev.entity.links) - media_create_pad_link(decoder, 2, &dev->vbi_dev.entity, 0, - MEDIA_LNK_FL_ENABLED); + MEDIA_LNK_FL_ENABLED); + media_create_pad_link(decoder, 1, &dev->vdev.entity, 0, + MEDIA_LNK_FL_ENABLED); + media_create_pad_link(decoder, 2, &dev->vbi_dev.entity, 0, + MEDIA_LNK_FL_ENABLED); #endif } diff --git a/drivers/media/usb/au0828/au0828-video.c b/drivers/media/usb/au0828/au0828-video.c index a1df4eb93b1486..97df879c419964 100644 --- a/drivers/media/usb/au0828/au0828-video.c +++ b/drivers/media/usb/au0828/au0828-video.c @@ -644,7 +644,7 @@ static int au0828_enable_analog_tuner(struct au0828_dev *dev) struct media_device *mdev = dev->media_dev; struct media_entity *source; struct media_link *link, *found_link = NULL; - int i, ret, active_links = 0; + int ret, active_links = 0; if (!mdev || !dev->decoder) return 0; @@ -656,8 +656,7 @@ static int au0828_enable_analog_tuner(struct au0828_dev *dev) * do DVB streaming while the DMA engine is being used for V4L2, * this should be enough for the actual needs. */ - for (i = 0; i < dev->decoder->num_links; i++) { - link = &dev->decoder->links[i]; + list_for_each_entry(link, &dev->decoder->links, list) { if (link->sink->entity == dev->decoder) { found_link = link; if (link->flags & MEDIA_LNK_FL_ENABLED) @@ -670,11 +669,10 @@ static int au0828_enable_analog_tuner(struct au0828_dev *dev) return 0; source = found_link->source->entity; - for (i = 0; i < source->num_links; i++) { + list_for_each_entry(link, &source->links, list) { struct media_entity *sink; int flags = 0; - link = &source->links[i]; sink = link->sink->entity; if (sink == dev->decoder) diff --git a/drivers/media/usb/cx231xx/cx231xx-video.c b/drivers/media/usb/cx231xx/cx231xx-video.c index cbb28c9123191e..b5eb9f61387257 100644 --- a/drivers/media/usb/cx231xx/cx231xx-video.c +++ b/drivers/media/usb/cx231xx/cx231xx-video.c @@ -106,7 +106,7 @@ static int cx231xx_enable_analog_tuner(struct cx231xx *dev) struct media_device *mdev = dev->media_dev; struct media_entity *entity, *decoder = NULL, *source; struct media_link *link, *found_link = NULL; - int i, ret, active_links = 0; + int ret, active_links = 0; if (!mdev) return 0; @@ -127,8 +127,7 @@ static int cx231xx_enable_analog_tuner(struct cx231xx *dev) if (!decoder) return 0; - for (i = 0; i < decoder->num_links; i++) { - link = &decoder->links[i]; + list_for_each_entry(link, &decoder->links, list) { if (link->sink->entity == decoder) { found_link = link; if (link->flags & MEDIA_LNK_FL_ENABLED) @@ -141,11 +140,10 @@ static int cx231xx_enable_analog_tuner(struct cx231xx *dev) return 0; source = found_link->source->entity; - for (i = 0; i < source->num_links; i++) { + list_for_each_entry(link, &source->links, list) { struct media_entity *sink; int flags = 0; - link = &source->links[i]; sink = link->sink->entity; if (sink == entity) diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 4d5fc91c4134bf..2e5646cf36e7bc 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -74,6 +74,7 @@ struct media_pipeline { struct media_link { struct media_gobj graph_obj; + struct list_head list; struct media_pad *source; /* Source pad */ struct media_pad *sink; /* Sink pad */ struct media_link *reverse; /* Link in the reverse direction */ @@ -116,10 +117,9 @@ struct media_entity { u16 num_links; /* Number of existing links, both * enabled and disabled */ u16 num_backlinks; /* Number of backlinks */ - u16 max_links; /* Maximum number of links */ - struct media_pad *pads; /* Pads array (num_pads elements) */ - struct media_link *links; /* Links array (max_links elements)*/ + struct media_pad *pads; /* Pads array (num_pads objects) */ + struct list_head links; /* Links list */ const struct media_entity_operations *ops; /* Entity operations */ @@ -220,7 +220,7 @@ static inline u32 media_gobj_gen_id(enum media_gobj_type type, u32 local_id) struct media_entity_graph { struct { struct media_entity *entity; - int link; + struct list_head *link; } stack[MEDIA_ENTITY_ENUM_MAX_DEPTH]; DECLARE_BITMAP(entities, MEDIA_ENTITY_ENUM_MAX_ID); @@ -254,7 +254,7 @@ void media_gobj_init(struct media_device *mdev, void media_gobj_remove(struct media_gobj *gobj); int media_entity_init(struct media_entity *entity, u16 num_pads, - struct media_pad *pads); + struct media_pad *pads); void media_entity_cleanup(struct media_entity *entity); int media_create_pad_link(struct media_entity *source, u16 source_pad, -- cgit 1.2.3-korg From 23615de5ee742f2f49833777ab015cf1a83fcbc3 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 20 Aug 2015 08:21:35 -0300 Subject: [media] media: make add link more generic The media_entity_add_link() function takes an entity as an argument just to get the list head. Make it more generic by changing the function argument to list_head. No functional changes. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index df110acdb2f689..e7ee666834a21d 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -568,7 +568,7 @@ EXPORT_SYMBOL_GPL(media_entity_put); * Links management */ -static struct media_link *media_entity_add_link(struct media_entity *entity) +static struct media_link *media_add_link(struct list_head *head) { struct media_link *link; @@ -576,7 +576,7 @@ static struct media_link *media_entity_add_link(struct media_entity *entity) if (link == NULL) return NULL; - list_add_tail(&link->list, &entity->links); + list_add_tail(&link->list, head); return link; } @@ -595,7 +595,7 @@ media_create_pad_link(struct media_entity *source, u16 source_pad, BUG_ON(source_pad >= source->num_pads); BUG_ON(sink_pad >= sink->num_pads); - link = media_entity_add_link(source); + link = media_add_link(&source->links); if (link == NULL) return -ENOMEM; @@ -610,7 +610,7 @@ media_create_pad_link(struct media_entity *source, u16 source_pad, /* Create the backlink. Backlinks are used to help graph traversal and * are not reported to userspace. */ - backlink = media_entity_add_link(sink); + backlink = media_add_link(&sink->links); if (backlink == NULL) { __media_entity_remove_link(source, link); return -ENOMEM; -- cgit 1.2.3-korg From 4b8a3c08592ae0d530c87e2e1672ed8d9184dc09 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 20 Aug 2015 09:10:07 -0300 Subject: [media] media: make media_link more generic to handle interace links By adding an union at media_link, we get for free a way to represent interface->entity links. No need to change anything at the code, just at the internal header file. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/media/media-entity.h | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 2e5646cf36e7bc..a7b21a7f4c640e 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -75,14 +75,20 @@ struct media_pipeline { struct media_link { struct media_gobj graph_obj; struct list_head list; - struct media_pad *source; /* Source pad */ - struct media_pad *sink; /* Sink pad */ + union { + struct media_gobj *gobj0; + struct media_pad *source; + }; + union { + struct media_gobj *gobj1; + struct media_pad *sink; + }; struct media_link *reverse; /* Link in the reverse direction */ unsigned long flags; /* Link flags (MEDIA_LNK_FL_*) */ }; struct media_pad { - struct media_gobj graph_obj; + struct media_gobj graph_obj; /* must be first field in struct */ struct media_entity *entity; /* Entity this pad belongs to */ u16 index; /* Pad index in the entity pads array */ unsigned long flags; /* Pad flags (MEDIA_PAD_FL_*) */ @@ -105,7 +111,7 @@ struct media_entity_operations { }; struct media_entity { - struct media_gobj graph_obj; + struct media_gobj graph_obj; /* must be first field in struct */ struct list_head list; const char *name; /* Entity name */ u32 type; /* Entity type (MEDIA_ENT_T_*) */ @@ -119,7 +125,7 @@ struct media_entity { u16 num_backlinks; /* Number of backlinks */ struct media_pad *pads; /* Pads array (num_pads objects) */ - struct list_head links; /* Links list */ + struct list_head links; /* Pad-to-pad links list */ const struct media_entity_operations *ops; /* Entity operations */ -- cgit 1.2.3-korg From 3c0e266fba5897c02c4bd23521a3271d338650ad Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 21 Aug 2015 08:45:34 -0300 Subject: [media] media: make link debug printk more generic Remove entity name from the link as this exists only if the object type is PAD on both link ends. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index e7ee666834a21d..e22954d2acbd64 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -94,16 +94,14 @@ static void dev_dbg_obj(const char *event_name, struct media_gobj *gobj) struct media_link *link = gobj_to_link(gobj); dev_dbg(gobj->mdev->dev, - "%s: id 0x%08x link#%d: '%s' %s#%d ==> '%s' %s#%d\n", + "%s: id 0x%08x link#%d: %s#%d ==> %s#%d\n", event_name, gobj->id, media_localid(gobj), - link->source->entity->name, - gobj_type(media_type(&link->source->graph_obj)), - media_localid(&link->source->graph_obj), + gobj_type(media_type(link->gobj0)), + media_localid(link->gobj0), - link->sink->entity->name, - gobj_type(media_type(&link->sink->graph_obj)), - media_localid(&link->sink->graph_obj)); + gobj_type(media_type(link->gobj1)), + media_localid(link->gobj1)); break; } case MEDIA_GRAPH_PAD: -- cgit 1.2.3-korg From 86e2662071d6f26704bb290317746149ce07be7a Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 7 Aug 2015 10:36:25 -0300 Subject: [media] media: add support to link interfaces and entities Now that we have a new graph object called "interfaces", we need to be able to link them to the entities. Add a linked list to the interfaces to allow them to be linked to the entities. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 38 ++++++++++++++++++++++++++++++++++++++ include/media/media-entity.h | 9 +++++++++ 2 files changed, 47 insertions(+) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index e22954d2acbd64..55cafb016fe8c6 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -857,6 +857,7 @@ struct media_intf_devnode *media_devnode_create(struct media_device *mdev, intf->type = type; intf->flags = flags; + INIT_LIST_HEAD(&intf->links); devnode->major = major; devnode->minor = minor; @@ -874,3 +875,40 @@ void media_devnode_remove(struct media_intf_devnode *devnode) kfree(devnode); } EXPORT_SYMBOL_GPL(media_devnode_remove); + +struct media_link *media_create_intf_link(struct media_entity *entity, + struct media_interface *intf, + u32 flags) +{ + struct media_link *link; + + link = media_add_link(&intf->links); + if (link == NULL) + return NULL; + + link->intf = intf; + link->entity = entity; + link->flags = flags; + + /* Initialize graph object embedded at the new link */ + media_gobj_init(intf->graph_obj.mdev, MEDIA_GRAPH_LINK, + &link->graph_obj); + + return link; +} +EXPORT_SYMBOL_GPL(media_create_intf_link); + + +static void __media_remove_intf_link(struct media_link *link) +{ + media_gobj_remove(&link->graph_obj); + kfree(link); +} + +void media_remove_intf_link(struct media_link *link) +{ + mutex_lock(&link->graph_obj.mdev->graph_mutex); + __media_remove_intf_link(link); + mutex_unlock(&link->graph_obj.mdev->graph_mutex); +} +EXPORT_SYMBOL_GPL(media_remove_intf_link); diff --git a/include/media/media-entity.h b/include/media/media-entity.h index a7b21a7f4c640e..d64e8cb4de98e4 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -78,10 +78,12 @@ struct media_link { union { struct media_gobj *gobj0; struct media_pad *source; + struct media_interface *intf; }; union { struct media_gobj *gobj1; struct media_pad *sink; + struct media_entity *entity; }; struct media_link *reverse; /* Link in the reverse direction */ unsigned long flags; /* Link flags (MEDIA_LNK_FL_*) */ @@ -154,6 +156,7 @@ struct media_entity { * struct media_intf_devnode - Define a Kernel API interface * * @graph_obj: embedded graph object + * @links: List of links pointing to graph entities * @type: Type of the interface as defined at the * uapi/media/media.h header, e. g. * MEDIA_INTF_T_* @@ -161,6 +164,7 @@ struct media_entity { */ struct media_interface { struct media_gobj graph_obj; + struct list_head links; u32 type; u32 flags; }; @@ -290,6 +294,11 @@ struct media_intf_devnode *media_devnode_create(struct media_device *mdev, u32 major, u32 minor, gfp_t gfp_flags); void media_devnode_remove(struct media_intf_devnode *devnode); +struct media_link *media_create_intf_link(struct media_entity *entity, + struct media_interface *intf, + u32 flags); +void media_remove_intf_link(struct media_link *link); + #define media_entity_call(entity, operation, args...) \ (((entity)->ops && (entity)->ops->operation) ? \ (entity)->ops->operation((entity) , ##args) : -ENOIOCTLCMD) -- cgit 1.2.3-korg From 1283f849dce2e64690e610216cd8dc3df9789bae Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 28 Aug 2015 15:43:36 -0300 Subject: [media] media-entity: add a helper function to create interface As we'll be adding other interface types in the future, put the common interface create code on a separate function. Suggested-by: Hans Verkuil Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 23 ++++++++++++++--------- 1 file changed, 14 insertions(+), 9 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 55cafb016fe8c6..d15797e8a14216 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -839,6 +839,18 @@ struct media_pad *media_entity_remote_pad(struct media_pad *pad) EXPORT_SYMBOL_GPL(media_entity_remote_pad); +static void media_interface_init(struct media_device *mdev, + struct media_interface *intf, + u32 gobj_type, + u32 intf_type, u32 flags) +{ + intf->type = intf_type; + intf->flags = flags; + INIT_LIST_HEAD(&intf->links); + + media_gobj_init(mdev, gobj_type, &intf->graph_obj); +} + /* Functions related to the media interface via device nodes */ struct media_intf_devnode *media_devnode_create(struct media_device *mdev, @@ -847,23 +859,16 @@ struct media_intf_devnode *media_devnode_create(struct media_device *mdev, gfp_t gfp_flags) { struct media_intf_devnode *devnode; - struct media_interface *intf; devnode = kzalloc(sizeof(*devnode), gfp_flags); if (!devnode) return NULL; - intf = &devnode->intf; - - intf->type = type; - intf->flags = flags; - INIT_LIST_HEAD(&intf->links); - devnode->major = major; devnode->minor = minor; - media_gobj_init(mdev, MEDIA_GRAPH_INTF_DEVNODE, - &devnode->intf.graph_obj); + media_interface_init(mdev, &devnode->intf, MEDIA_GRAPH_INTF_DEVNODE, + type, flags); return devnode; } -- cgit 1.2.3-korg From 8211b187ec6461e8d80a36304bd9fc087e3c490f Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 21 Aug 2015 08:20:22 -0300 Subject: [media] dvbdev: add support for interfaces Now that the infrastruct for that is set, add support for interfaces. Please notice that we're missing two links: DVB FE intf -> tuner DVB demux intf -> dvr Those should be added latter, after having the entire graph set. With the current infrastructure, those should be added at dvb_create_media_graph(), but it would also require some extra core changes, to allow the function to enumerate the interfaces. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-core/dvbdev.c | 102 ++++++++++++++++++++++++++++++---------- drivers/media/dvb-core/dvbdev.h | 1 + 2 files changed, 79 insertions(+), 24 deletions(-) diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index 65f59f2124b460..6bf61d42c017be 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -180,14 +180,36 @@ skip: return -ENFILE; } -static void dvb_register_media_device(struct dvb_device *dvbdev, - int type, int minor) +static void dvb_create_media_entity(struct dvb_device *dvbdev, + int type, int minor) { #if defined(CONFIG_MEDIA_CONTROLLER_DVB) int ret = 0, npads; - if (!dvbdev->adapter->mdev) + switch (type) { + case DVB_DEVICE_FRONTEND: + npads = 2; + break; + case DVB_DEVICE_DEMUX: + npads = 2; + break; + case DVB_DEVICE_CA: + npads = 2; + break; + case DVB_DEVICE_NET: + /* + * We should be creating entities for the MPE/ULE + * decapsulation hardware (or software implementation). + * + * However, the number of for the MPE/ULE decaps may not be + * fixed. As we don't have yet dynamic support for PADs at + * the Media Controller, let's not create the decap + * entities yet. + */ + return; + default: return; + } dvbdev->entity = kzalloc(sizeof(*dvbdev->entity), GFP_KERNEL); if (!dvbdev->entity) @@ -197,19 +219,6 @@ static void dvb_register_media_device(struct dvb_device *dvbdev, dvbdev->entity->info.dev.minor = minor; dvbdev->entity->name = dvbdev->name; - switch (type) { - case DVB_DEVICE_CA: - case DVB_DEVICE_DEMUX: - case DVB_DEVICE_FRONTEND: - npads = 2; - break; - case DVB_DEVICE_NET: - npads = 0; - break; - default: - npads = 1; - } - if (npads) { dvbdev->pads = kcalloc(npads, sizeof(*dvbdev->pads), GFP_KERNEL); @@ -230,18 +239,11 @@ static void dvb_register_media_device(struct dvb_device *dvbdev, dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK; dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE; break; - case DVB_DEVICE_DVR: - dvbdev->entity->type = MEDIA_ENT_T_DEVNODE_DVB_DVR; - dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK; - break; case DVB_DEVICE_CA: dvbdev->entity->type = MEDIA_ENT_T_DEVNODE_DVB_CA; dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK; dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE; break; - case DVB_DEVICE_NET: - dvbdev->entity->type = MEDIA_ENT_T_DEVNODE_DVB_NET; - break; default: kfree(dvbdev->entity); dvbdev->entity = NULL; @@ -263,11 +265,63 @@ static void dvb_register_media_device(struct dvb_device *dvbdev, return; } - printk(KERN_DEBUG "%s: media device '%s' registered.\n", + printk(KERN_DEBUG "%s: media entity '%s' registered.\n", __func__, dvbdev->entity->name); #endif } +static void dvb_register_media_device(struct dvb_device *dvbdev, + int type, int minor) +{ +#if defined(CONFIG_MEDIA_CONTROLLER_DVB) + u32 intf_type; + + if (!dvbdev->adapter->mdev) + return; + + dvb_create_media_entity(dvbdev, type, minor); + + switch (type) { + case DVB_DEVICE_FRONTEND: + intf_type = MEDIA_INTF_T_DVB_FE; + break; + case DVB_DEVICE_DEMUX: + intf_type = MEDIA_INTF_T_DVB_DEMUX; + break; + case DVB_DEVICE_DVR: + intf_type = MEDIA_INTF_T_DVB_DVR; + break; + case DVB_DEVICE_CA: + intf_type = MEDIA_INTF_T_DVB_CA; + break; + case DVB_DEVICE_NET: + intf_type = MEDIA_INTF_T_DVB_NET; + break; + default: + return; + } + + dvbdev->intf_devnode = media_devnode_create(dvbdev->adapter->mdev, + intf_type, 0, + DVB_MAJOR, minor, + GFP_KERNEL); + + /* + * Create the "obvious" link, e. g. the ones that represent + * a direct association between an interface and an entity. + * Other links should be created elsewhere, like: + * DVB FE intf -> tuner + * DVB demux intf -> dvr + */ + + if (!dvbdev->entity || !dvbdev->intf_devnode) + return; + + media_create_intf_link(dvbdev->entity, &dvbdev->intf_devnode->intf, 0); + +#endif +} + int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev, const struct dvb_device *template, void *priv, int type) { diff --git a/drivers/media/dvb-core/dvbdev.h b/drivers/media/dvb-core/dvbdev.h index 1069a776bbdb89..8398c8fb02b033 100644 --- a/drivers/media/dvb-core/dvbdev.h +++ b/drivers/media/dvb-core/dvbdev.h @@ -149,6 +149,7 @@ struct dvb_device { /* Allocated and filled inside dvbdev.c */ struct media_entity *entity; + struct media_intf_devnode *intf_devnode; struct media_pad *pads; #endif -- cgit 1.2.3-korg From 57cf79b79b18d885c144889989b47149e23c8dc2 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 21 Aug 2015 09:23:22 -0300 Subject: [media] media: add a linked list to track interfaces by mdev The media device should list the interface objects, so add a linked list for those interfaces in struct media_device. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 1 + drivers/media/media-entity.c | 3 +++ include/media/media-device.h | 2 ++ include/media/media-entity.h | 3 +++ 4 files changed, 9 insertions(+) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 3e649cacfc075c..659507bce63f56 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -381,6 +381,7 @@ int __must_check __media_device_register(struct media_device *mdev, return -EINVAL; INIT_LIST_HEAD(&mdev->entities); + INIT_LIST_HEAD(&mdev->interfaces); spin_lock_init(&mdev->lock); mutex_init(&mdev->graph_mutex); diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index d15797e8a14216..8449274bb50c97 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -849,6 +849,8 @@ static void media_interface_init(struct media_device *mdev, INIT_LIST_HEAD(&intf->links); media_gobj_init(mdev, gobj_type, &intf->graph_obj); + + list_add_tail(&intf->list, &mdev->interfaces); } /* Functions related to the media interface via device nodes */ @@ -877,6 +879,7 @@ EXPORT_SYMBOL_GPL(media_devnode_create); void media_devnode_remove(struct media_intf_devnode *devnode) { media_gobj_remove(&devnode->intf.graph_obj); + list_del(&devnode->intf.list); kfree(devnode); } EXPORT_SYMBOL_GPL(media_devnode_remove); diff --git a/include/media/media-device.h b/include/media/media-device.h index 3b14394d570102..51807efa505b5b 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -46,6 +46,7 @@ struct device; * @link_id: Unique ID used on the last link registered * @intf_devnode_id: Unique ID used on the last interface devnode registered * @entities: List of registered entities + * @interfaces: List of registered interfaces * @lock: Entities list lock * @graph_mutex: Entities graph operation lock * @link_notify: Link state change notification callback @@ -77,6 +78,7 @@ struct media_device { u32 intf_devnode_id; struct list_head entities; + struct list_head interfaces; /* Protects the entities list */ spinlock_t lock; diff --git a/include/media/media-entity.h b/include/media/media-entity.h index d64e8cb4de98e4..ca35e07d9348c4 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -156,6 +156,8 @@ struct media_entity { * struct media_intf_devnode - Define a Kernel API interface * * @graph_obj: embedded graph object + * @list: Linked list used to find other interfaces that belong + * to the same media controller * @links: List of links pointing to graph entities * @type: Type of the interface as defined at the * uapi/media/media.h header, e. g. @@ -164,6 +166,7 @@ struct media_entity { */ struct media_interface { struct media_gobj graph_obj; + struct list_head list; struct list_head links; u32 type; u32 flags; -- cgit 1.2.3-korg From 8ddb90d2e5dc1b80c538d371bfe361e1bae29297 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 21 Aug 2015 09:32:38 -0300 Subject: [media] dvbdev: add support for indirect interface links Some interfaces indirectly control multiple entities. Add support for those. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-core/dvbdev.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index 6bf61d42c017be..ada0738d26f26a 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -441,6 +441,7 @@ void dvb_create_media_graph(struct dvb_adapter *adap) struct media_device *mdev = adap->mdev; struct media_entity *entity, *tuner = NULL, *fe = NULL; struct media_entity *demux = NULL, *dvr = NULL, *ca = NULL; + struct media_interface *intf; if (!mdev) return; @@ -476,6 +477,16 @@ void dvb_create_media_graph(struct dvb_adapter *adap) if (demux && ca) media_create_pad_link(demux, 1, ca, 0, MEDIA_LNK_FL_ENABLED); + + /* Create indirect interface links for FE->tuner, DVR->demux and CA->ca */ + list_for_each_entry(intf, &mdev->interfaces, list) { + if (intf->type == MEDIA_INTF_T_DVB_CA && ca) + media_create_intf_link(ca, intf, 0); + if (intf->type == MEDIA_INTF_T_DVB_FE && tuner) + media_create_intf_link(tuner, intf, 0); + if (intf->type == MEDIA_INTF_T_DVB_DVR && demux) + media_create_intf_link(demux, intf, 0); + } } EXPORT_SYMBOL_GPL(dvb_create_media_graph); #endif -- cgit 1.2.3-korg From 32fdc0e1a87c1ed50f77a9e54413165282e99b8b Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 21 Aug 2015 11:40:34 -0300 Subject: [media] uapi/media.h: Fix entity namespace Now that interfaces got created, we need to fix the entity namespace. So, let's create a consistent new namespace and add backward compatibility macros to keep the old namespace preserved. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-core/dvbdev.c | 26 +++++++------- include/uapi/linux/media.h | 76 ++++++++++++++++++++++++++++++----------- 2 files changed, 70 insertions(+), 32 deletions(-) diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index ada0738d26f26a..dadcf165507054 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -230,17 +230,17 @@ static void dvb_create_media_entity(struct dvb_device *dvbdev, switch (type) { case DVB_DEVICE_FRONTEND: - dvbdev->entity->type = MEDIA_ENT_T_DEVNODE_DVB_FE; + dvbdev->entity->type = MEDIA_ENT_T_DVB_DEMOD; dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK; dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE; break; case DVB_DEVICE_DEMUX: - dvbdev->entity->type = MEDIA_ENT_T_DEVNODE_DVB_DEMUX; + dvbdev->entity->type = MEDIA_ENT_T_DVB_DEMUX; dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK; dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE; break; case DVB_DEVICE_CA: - dvbdev->entity->type = MEDIA_ENT_T_DEVNODE_DVB_CA; + dvbdev->entity->type = MEDIA_ENT_T_DVB_CA; dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK; dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE; break; @@ -439,7 +439,7 @@ EXPORT_SYMBOL(dvb_unregister_device); void dvb_create_media_graph(struct dvb_adapter *adap) { struct media_device *mdev = adap->mdev; - struct media_entity *entity, *tuner = NULL, *fe = NULL; + struct media_entity *entity, *tuner = NULL, *demod = NULL; struct media_entity *demux = NULL, *dvr = NULL, *ca = NULL; struct media_interface *intf; @@ -451,26 +451,26 @@ void dvb_create_media_graph(struct dvb_adapter *adap) case MEDIA_ENT_T_V4L2_SUBDEV_TUNER: tuner = entity; break; - case MEDIA_ENT_T_DEVNODE_DVB_FE: - fe = entity; + case MEDIA_ENT_T_DVB_DEMOD: + demod = entity; break; - case MEDIA_ENT_T_DEVNODE_DVB_DEMUX: + case MEDIA_ENT_T_DVB_DEMUX: demux = entity; break; - case MEDIA_ENT_T_DEVNODE_DVB_DVR: + case MEDIA_ENT_T_DVB_TSOUT: dvr = entity; break; - case MEDIA_ENT_T_DEVNODE_DVB_CA: + case MEDIA_ENT_T_DVB_CA: ca = entity; break; } } - if (tuner && fe) - media_create_pad_link(tuner, 0, fe, 0, 0); + if (tuner && demod) + media_create_pad_link(tuner, 0, demod, 0, 0); - if (fe && demux) - media_create_pad_link(fe, 1, demux, 0, MEDIA_LNK_FL_ENABLED); + if (demod && demux) + media_create_pad_link(demod, 1, demux, 0, MEDIA_LNK_FL_ENABLED); if (demux && dvr) media_create_pad_link(demux, 1, dvr, 0, MEDIA_LNK_FL_ENABLED); diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h index 3ad3d6be293fb4..8e9896820bee52 100644 --- a/include/uapi/linux/media.h +++ b/include/uapi/linux/media.h @@ -42,31 +42,69 @@ struct media_device_info { #define MEDIA_ENT_ID_FLAG_NEXT (1 << 31) +/* + * Base numbers for entity types + * + * Please notice that the huge gap of 16 bits for each base is overkill! + * 8 bits is more than enough to avoid starving entity types for each + * subsystem. + * + * However, It is kept this way just to avoid binary breakages with the + * namespace provided on legacy versions of this header. + */ +#define MEDIA_ENT_T_DVB_BASE 0x00000000 +#define MEDIA_ENT_T_V4L2_BASE 0x00010000 +#define MEDIA_ENT_T_V4L2_SUBDEV_BASE 0x00020000 + +/* + * V4L2 entities - Those are used for DMA (mmap/DMABUF) and + * read()/write() data I/O associated with the V4L2 devnodes. + */ +#define MEDIA_ENT_T_V4L2_VIDEO (MEDIA_ENT_T_V4L2_BASE + 1) + /* + * Please notice that numbers between MEDIA_ENT_T_V4L2_BASE + 2 and + * MEDIA_ENT_T_V4L2_BASE + 4 can't be used, as those values used + * to be declared for FB, ALSA and DVB entities. + * As those values were never actually used in practice, we're just + * adding them as backward compatibility macros and keeping the + * numberspace clean here. This way, we avoid breaking compilation, + * in the case of having some userspace application using the old + * symbols. + */ +#define MEDIA_ENT_T_V4L2_VBI (MEDIA_ENT_T_V4L2_BASE + 5) +#define MEDIA_ENT_T_V4L2_SWRADIO (MEDIA_ENT_T_V4L2_BASE + 6) + +/* V4L2 Sub-device entities */ +#define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 1) +#define MEDIA_ENT_T_V4L2_SUBDEV_FLASH (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 2) +#define MEDIA_ENT_T_V4L2_SUBDEV_LENS (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 3) + /* A converter of analogue video to its digital representation. */ +#define MEDIA_ENT_T_V4L2_SUBDEV_DECODER (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 4) + /* Tuner entity is actually both V4L2 and DVB subdev */ +#define MEDIA_ENT_T_V4L2_SUBDEV_TUNER (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 5) + +/* DVB entities */ +#define MEDIA_ENT_T_DVB_DEMOD (MEDIA_ENT_T_DVB_BASE + 1) +#define MEDIA_ENT_T_DVB_DEMUX (MEDIA_ENT_T_DVB_BASE + 2) +#define MEDIA_ENT_T_DVB_TSOUT (MEDIA_ENT_T_DVB_BASE + 3) +#define MEDIA_ENT_T_DVB_CA (MEDIA_ENT_T_DVB_BASE + 4) +#define MEDIA_ENT_T_DVB_NET_DECAP (MEDIA_ENT_T_DVB_BASE + 5) + +/* Legacy symbols used to avoid userspace compilation breakages */ #define MEDIA_ENT_TYPE_SHIFT 16 #define MEDIA_ENT_TYPE_MASK 0x00ff0000 #define MEDIA_ENT_SUBTYPE_MASK 0x0000ffff -#define MEDIA_ENT_T_DEVNODE (1 << MEDIA_ENT_TYPE_SHIFT) -#define MEDIA_ENT_T_DEVNODE_V4L (MEDIA_ENT_T_DEVNODE + 1) +#define MEDIA_ENT_T_DEVNODE MEDIA_ENT_T_V4L2_BASE +#define MEDIA_ENT_T_V4L2_SUBDEV MEDIA_ENT_T_V4L2_SUBDEV_BASE + +#define MEDIA_ENT_T_DEVNODE_V4L MEDIA_ENT_T_V4L2_VIDEO + #define MEDIA_ENT_T_DEVNODE_FB (MEDIA_ENT_T_DEVNODE + 2) #define MEDIA_ENT_T_DEVNODE_ALSA (MEDIA_ENT_T_DEVNODE + 3) -#define MEDIA_ENT_T_DEVNODE_DVB_FE (MEDIA_ENT_T_DEVNODE + 4) -#define MEDIA_ENT_T_DEVNODE_DVB_DEMUX (MEDIA_ENT_T_DEVNODE + 5) -#define MEDIA_ENT_T_DEVNODE_DVB_DVR (MEDIA_ENT_T_DEVNODE + 6) -#define MEDIA_ENT_T_DEVNODE_DVB_CA (MEDIA_ENT_T_DEVNODE + 7) -#define MEDIA_ENT_T_DEVNODE_DVB_NET (MEDIA_ENT_T_DEVNODE + 8) - -/* Legacy symbol. Use it to avoid userspace compilation breakages */ -#define MEDIA_ENT_T_DEVNODE_DVB MEDIA_ENT_T_DEVNODE_DVB_FE - -#define MEDIA_ENT_T_V4L2_SUBDEV (2 << MEDIA_ENT_TYPE_SHIFT) -#define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR (MEDIA_ENT_T_V4L2_SUBDEV + 1) -#define MEDIA_ENT_T_V4L2_SUBDEV_FLASH (MEDIA_ENT_T_V4L2_SUBDEV + 2) -#define MEDIA_ENT_T_V4L2_SUBDEV_LENS (MEDIA_ENT_T_V4L2_SUBDEV + 3) -/* A converter of analogue video to its digital representation. */ -#define MEDIA_ENT_T_V4L2_SUBDEV_DECODER (MEDIA_ENT_T_V4L2_SUBDEV + 4) - -#define MEDIA_ENT_T_V4L2_SUBDEV_TUNER (MEDIA_ENT_T_V4L2_SUBDEV + 5) +#define MEDIA_ENT_T_DEVNODE_DVB (MEDIA_ENT_T_DEVNODE + 4) + +/* Entity types */ #define MEDIA_ENT_FL_DEFAULT (1 << 0) -- cgit 1.2.3-korg From cf49066152c5b46c0b90f44593beda27997ca58b Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 21 Aug 2015 11:50:17 -0300 Subject: [media] replace all occurrences of MEDIA_ENT_T_DEVNODE_V4L Now that interfaces and entities are distinct, it makes no sense of keeping something named as MEDIA_ENT_T_DEVNODE. This change was done with this script: for i in $(git grep -l MEDIA_ENT_T|grep -v uapi/linux/media.h); do sed s,MEDIA_ENT_T_DEVNODE_V4L,MEDIA_ENT_T_V4L2_VIDEO, <$i >a && mv a $i; done Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml | 2 +- drivers/media/platform/xilinx/xilinx-dma.c | 2 +- drivers/media/v4l2-core/v4l2-dev.c | 2 +- drivers/media/v4l2-core/v4l2-subdev.c | 2 +- 4 files changed, 4 insertions(+), 4 deletions(-) diff --git a/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml b/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml index 5872f8bbf7747e..910243d4edb837 100644 --- a/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml +++ b/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml @@ -183,7 +183,7 @@ Unknown device node - MEDIA_ENT_T_DEVNODE_V4L + MEDIA_ENT_T_V4L2_VIDEO V4L video, radio or vbi device node diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c index 4b84a0e54a0cd3..9c8b2725425361 100644 --- a/drivers/media/platform/xilinx/xilinx-dma.c +++ b/drivers/media/platform/xilinx/xilinx-dma.c @@ -193,7 +193,7 @@ static int xvip_pipeline_validate(struct xvip_pipeline *pipe, while ((entity = media_entity_graph_walk_next(&graph))) { struct xvip_dma *dma; - if (entity->type != MEDIA_ENT_T_DEVNODE_V4L) + if (entity->type != MEDIA_ENT_T_V4L2_VIDEO) continue; dma = to_xvip_dma(media_entity_to_video_device(entity)); diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c index 6b1eaeddbdb3c9..2297571a0568a8 100644 --- a/drivers/media/v4l2-core/v4l2-dev.c +++ b/drivers/media/v4l2-core/v4l2-dev.c @@ -922,7 +922,7 @@ int __video_register_device(struct video_device *vdev, int type, int nr, /* Part 5: Register the entity. */ if (vdev->v4l2_dev->mdev && vdev->vfl_type != VFL_TYPE_SUBDEV) { - vdev->entity.type = MEDIA_ENT_T_DEVNODE_V4L; + vdev->entity.type = MEDIA_ENT_T_V4L2_VIDEO; vdev->entity.name = vdev->name; vdev->entity.info.dev.major = VIDEO_MAJOR; vdev->entity.info.dev.minor = vdev->minor; diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index 83615b8fb46add..e6e1115d82150b 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -535,7 +535,7 @@ v4l2_subdev_link_validate_get_format(struct media_pad *pad, return v4l2_subdev_call(sd, pad, get_fmt, NULL, fmt); } - WARN(pad->entity->type != MEDIA_ENT_T_DEVNODE_V4L, + WARN(pad->entity->type != MEDIA_ENT_T_V4L2_VIDEO, "Driver bug! Wrong media entity type 0x%08x, entity %s\n", pad->entity->type, pad->entity->name); -- cgit 1.2.3-korg From fef486a07d69cbcae81bf65a6817ff7383104a24 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 21 Aug 2015 11:54:40 -0300 Subject: [media] replace all occurrences of MEDIA_ENT_T_DEVNODE_DVB Now that interfaces and entities are distinct, it makes no sense of keeping something named as MEDIA_ENT_T_DEVNODE_DVB_foo. Made via this script: for i in $(git grep -l MEDIA_ENT_T|grep -v uapi/linux/media.h); do sed s,MEDIA_ENT_T_DEVNODE_DVB_,MEDIA_ENT_T_DVB_, <$i >a && mv a $i; done for i in $(git grep -l MEDIA_ENT_T|grep -v uapi/linux/media.h); do sed s,MEDIA_ENT_T_DVB_DVR,MEDIA_ENT_T_DVB_TSOUT, <$i >a && mv a $i; done for i in $(git grep -l MEDIA_ENT_T|grep -v uapi/linux/media.h); do sed s,MEDIA_ENT_T_DVB_FE,MEDIA_ENT_T_DVB_DEMOD, <$i >a && mv a $i; done for i in $(git grep -l MEDIA_ENT_T|grep -v uapi/linux/media.h); do sed s,MEDIA_ENT_T_DVB_NET,MEDIA_ENT_T_DVB_DEMOD_NET_DECAP, <$i >a && mv a $i; done Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml b/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml index 910243d4edb837..32a78363564910 100644 --- a/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml +++ b/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml @@ -195,23 +195,23 @@ ALSA card - MEDIA_ENT_T_DEVNODE_DVB_FE + MEDIA_ENT_T_DVB_DEMOD DVB frontend devnode - MEDIA_ENT_T_DEVNODE_DVB_DEMUX + MEDIA_ENT_T_DVB_DEMUX DVB demux devnode - MEDIA_ENT_T_DEVNODE_DVB_DVR + MEDIA_ENT_T_DVB_TSOUT DVB DVR devnode - MEDIA_ENT_T_DEVNODE_DVB_CA + MEDIA_ENT_T_DVB_CA DVB CAM devnode - MEDIA_ENT_T_DEVNODE_DVB_NET + MEDIA_ENT_T_DVB_DEMOD_NET_DECAP DVB network devnode -- cgit 1.2.3-korg From fa17b46a6a01013f48c33934c09e02f51f099f2b Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 21 Aug 2015 12:17:40 -0300 Subject: [media] media: add macros to check if subdev or V4L2 DMA As we'll be removing entity subtypes from the Kernel, we need to provide a way for drivers and core to check if a given entity is represented by a V4L2 subdev or if it is an V4L2 I/O entity (typically with DMA). Drivers that create entities that don't belong to any defined subdev category should use MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/media/media-entity.h | 34 ++++++++++++++++++++++++++++++++++ include/uapi/linux/media.h | 3 +++ 2 files changed, 37 insertions(+) diff --git a/include/media/media-entity.h b/include/media/media-entity.h index ca35e07d9348c4..2596878f4b9f1a 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -220,6 +220,40 @@ static inline u32 media_gobj_gen_id(enum media_gobj_type type, u32 local_id) return id; } +static inline bool is_media_entity_v4l2_io(struct media_entity *entity) +{ + if (!entity) + return false; + + switch (entity->type) { + case MEDIA_ENT_T_V4L2_VIDEO: + case MEDIA_ENT_T_V4L2_VBI: + case MEDIA_ENT_T_V4L2_SWRADIO: + return true; + default: + return false; + } +} + +static inline bool is_media_entity_v4l2_subdev(struct media_entity *entity) +{ + if (!entity) + return false; + + switch (entity->type) { + case MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN: + case MEDIA_ENT_T_V4L2_SUBDEV_SENSOR: + case MEDIA_ENT_T_V4L2_SUBDEV_FLASH: + case MEDIA_ENT_T_V4L2_SUBDEV_LENS: + case MEDIA_ENT_T_V4L2_SUBDEV_DECODER: + case MEDIA_ENT_T_V4L2_SUBDEV_TUNER: + return true; + + default: + return false; + } +} + #define MEDIA_ENTITY_ENUM_MAX_DEPTH 16 #define MEDIA_ENTITY_ENUM_MAX_ID 64 diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h index 8e9896820bee52..c9314645d93309 100644 --- a/include/uapi/linux/media.h +++ b/include/uapi/linux/media.h @@ -75,6 +75,9 @@ struct media_device_info { #define MEDIA_ENT_T_V4L2_SWRADIO (MEDIA_ENT_T_V4L2_BASE + 6) /* V4L2 Sub-device entities */ + +#define MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN MEDIA_ENT_T_V4L2_SUBDEV_BASE + #define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 1) #define MEDIA_ENT_T_V4L2_SUBDEV_FLASH (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 2) #define MEDIA_ENT_T_V4L2_SUBDEV_LENS (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 3) -- cgit 1.2.3-korg From 3efdf62c5f68007020ef935ad2887e7fc4e31c36 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 7 May 2015 22:12:32 -0300 Subject: [media] media: use macros to check for V4L2 subdev entities Instead of relying on media subtype, use the new macros to detect if an entity is a subdev or an A/V DMA entity. Please note that most drivers assume that there's just AV_DMA or V4L2 subdevs. This is not true anymore, as we've added MC support for DVB, and there are plans to add support for ALSA and FB/DRM too. Ok, on the current pipelines supported by those drivers, just V4L stuff are there, but, assuming that some day a pipeline that also works with other subsystems will ever added, it is better to add explicit checks for the AV_DMA stuff. Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/exynos4-is/common.c | 3 +-- drivers/media/platform/exynos4-is/fimc-capture.c | 5 ++--- drivers/media/platform/exynos4-is/fimc-isp-video.c | 3 +-- drivers/media/platform/exynos4-is/fimc-lite.c | 10 ++++------ drivers/media/platform/exynos4-is/media-dev.c | 7 +++---- drivers/media/platform/omap3isp/isp.c | 14 ++++++-------- drivers/media/platform/omap3isp/ispvideo.c | 7 +++---- drivers/media/platform/s3c-camif/camif-capture.c | 2 +- drivers/media/platform/vsp1/vsp1_video.c | 9 ++++----- drivers/media/platform/xilinx/xilinx-dma.c | 6 ++---- drivers/media/v4l2-core/v4l2-subdev.c | 2 +- drivers/staging/media/davinci_vpfe/vpfe_video.c | 6 +++--- drivers/staging/media/omap4iss/iss.c | 14 ++++++-------- drivers/staging/media/omap4iss/iss_video.c | 5 ++--- 14 files changed, 39 insertions(+), 54 deletions(-) diff --git a/drivers/media/platform/exynos4-is/common.c b/drivers/media/platform/exynos4-is/common.c index b6716c57b5db31..b90f5bb15517b1 100644 --- a/drivers/media/platform/exynos4-is/common.c +++ b/drivers/media/platform/exynos4-is/common.c @@ -22,8 +22,7 @@ struct v4l2_subdev *fimc_find_remote_sensor(struct media_entity *entity) while (pad->flags & MEDIA_PAD_FL_SINK) { /* source pad */ pad = media_entity_remote_pad(pad); - if (pad == NULL || - media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) + if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) break; sd = media_entity_to_v4l2_subdev(pad->entity); diff --git a/drivers/media/platform/exynos4-is/fimc-capture.c b/drivers/media/platform/exynos4-is/fimc-capture.c index 8f5bee42783f1b..48a826372d3d56 100644 --- a/drivers/media/platform/exynos4-is/fimc-capture.c +++ b/drivers/media/platform/exynos4-is/fimc-capture.c @@ -1136,8 +1136,7 @@ static int fimc_pipeline_validate(struct fimc_dev *fimc) } } - if (src_pad == NULL || - media_entity_type(src_pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) + if (!src_pad || !is_media_entity_v4l2_subdev(src_pad->entity)) break; /* Don't call FIMC subdev operation to avoid nested locking */ @@ -1392,7 +1391,7 @@ static int fimc_link_setup(struct media_entity *entity, struct fimc_vid_cap *vc = &fimc->vid_cap; struct v4l2_subdev *sensor; - if (media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV) + if (!is_media_entity_v4l2_subdev(remote->entity)) return -EINVAL; if (WARN_ON(fimc == NULL)) diff --git a/drivers/media/platform/exynos4-is/fimc-isp-video.c b/drivers/media/platform/exynos4-is/fimc-isp-video.c index 239df7d8bd3067..9c7794bcf0c320 100644 --- a/drivers/media/platform/exynos4-is/fimc-isp-video.c +++ b/drivers/media/platform/exynos4-is/fimc-isp-video.c @@ -466,8 +466,7 @@ static int isp_video_pipeline_validate(struct fimc_isp *isp) /* Retrieve format at the source pad */ pad = media_entity_remote_pad(pad); - if (pad == NULL || - media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) + if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) break; sd = media_entity_to_v4l2_subdev(pad->entity); diff --git a/drivers/media/platform/exynos4-is/fimc-lite.c b/drivers/media/platform/exynos4-is/fimc-lite.c index 11d25712153dd2..957cf144a67528 100644 --- a/drivers/media/platform/exynos4-is/fimc-lite.c +++ b/drivers/media/platform/exynos4-is/fimc-lite.c @@ -808,8 +808,7 @@ static int fimc_pipeline_validate(struct fimc_lite *fimc) } /* Retrieve format at the source pad */ pad = media_entity_remote_pad(pad); - if (pad == NULL || - media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) + if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) break; sd = media_entity_to_v4l2_subdev(pad->entity); @@ -982,7 +981,6 @@ static int fimc_lite_link_setup(struct media_entity *entity, { struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct fimc_lite *fimc = v4l2_get_subdevdata(sd); - unsigned int remote_ent_type = media_entity_type(remote->entity); int ret = 0; if (WARN_ON(fimc == NULL)) @@ -994,7 +992,7 @@ static int fimc_lite_link_setup(struct media_entity *entity, switch (local->index) { case FLITE_SD_PAD_SINK: - if (remote_ent_type != MEDIA_ENT_T_V4L2_SUBDEV) { + if (!is_media_entity_v4l2_subdev(remote->entity)) { ret = -EINVAL; break; } @@ -1012,7 +1010,7 @@ static int fimc_lite_link_setup(struct media_entity *entity, case FLITE_SD_PAD_SOURCE_DMA: if (!(flags & MEDIA_LNK_FL_ENABLED)) atomic_set(&fimc->out_path, FIMC_IO_NONE); - else if (remote_ent_type == MEDIA_ENT_T_DEVNODE) + else if (is_media_entity_v4l2_io(remote->entity)) atomic_set(&fimc->out_path, FIMC_IO_DMA); else ret = -EINVAL; @@ -1021,7 +1019,7 @@ static int fimc_lite_link_setup(struct media_entity *entity, case FLITE_SD_PAD_SOURCE_ISP: if (!(flags & MEDIA_LNK_FL_ENABLED)) atomic_set(&fimc->out_path, FIMC_IO_NONE); - else if (remote_ent_type == MEDIA_ENT_T_V4L2_SUBDEV) + else if (is_media_entity_v4l2_subdev(remote->entity)) atomic_set(&fimc->out_path, FIMC_IO_ISP); else ret = -EINVAL; diff --git a/drivers/media/platform/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c index a67b98676dd923..a61ecedc12015c 100644 --- a/drivers/media/platform/exynos4-is/media-dev.c +++ b/drivers/media/platform/exynos4-is/media-dev.c @@ -88,8 +88,7 @@ static void fimc_pipeline_prepare(struct fimc_pipeline *p, break; } - if (pad == NULL || - media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) + if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) break; sd = media_entity_to_v4l2_subdev(pad->entity); @@ -1062,7 +1061,7 @@ static int __fimc_md_modify_pipelines(struct media_entity *entity, bool enable) media_entity_graph_walk_start(&graph, entity); while ((entity = media_entity_graph_walk_next(&graph))) { - if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE) + if (!is_media_entity_v4l2_io(entity)) continue; ret = __fimc_md_modify_pipeline(entity, enable); @@ -1076,7 +1075,7 @@ static int __fimc_md_modify_pipelines(struct media_entity *entity, bool enable) media_entity_graph_walk_start(&graph, entity_err); while ((entity_err = media_entity_graph_walk_next(&graph))) { - if (media_entity_type(entity_err) != MEDIA_ENT_T_DEVNODE) + if (!is_media_entity_v4l2_io(entity_err)) continue; __fimc_md_modify_pipeline(entity_err, !enable); diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c index 69e7733d36cd0f..cb8ac90086c141 100644 --- a/drivers/media/platform/omap3isp/isp.c +++ b/drivers/media/platform/omap3isp/isp.c @@ -691,7 +691,7 @@ static int isp_pipeline_pm_use_count(struct media_entity *entity) media_entity_graph_walk_start(&graph, entity); while ((entity = media_entity_graph_walk_next(&graph))) { - if (media_entity_type(entity) == MEDIA_ENT_T_DEVNODE) + if (is_media_entity_v4l2_io(entity)) use += entity->use_count; } @@ -714,7 +714,7 @@ static int isp_pipeline_pm_power_one(struct media_entity *entity, int change) struct v4l2_subdev *subdev; int ret; - subdev = media_entity_type(entity) == MEDIA_ENT_T_V4L2_SUBDEV + subdev = is_media_entity_v4l2_subdev(entity) ? media_entity_to_v4l2_subdev(entity) : NULL; if (entity->use_count == 0 && change > 0 && subdev != NULL) { @@ -754,7 +754,7 @@ static int isp_pipeline_pm_power(struct media_entity *entity, int change) media_entity_graph_walk_start(&graph, entity); while (!ret && (entity = media_entity_graph_walk_next(&graph))) - if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE) + if (is_media_entity_v4l2_subdev(entity)) ret = isp_pipeline_pm_power_one(entity, change); if (!ret) @@ -764,7 +764,7 @@ static int isp_pipeline_pm_power(struct media_entity *entity, int change) while ((first = media_entity_graph_walk_next(&graph)) && first != entity) - if (media_entity_type(first) != MEDIA_ENT_T_DEVNODE) + if (is_media_entity_v4l2_subdev(first)) isp_pipeline_pm_power_one(first, -change); return ret; @@ -897,8 +897,7 @@ static int isp_pipeline_enable(struct isp_pipeline *pipe, break; pad = media_entity_remote_pad(pad); - if (pad == NULL || - media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) + if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) break; entity = pad->entity; @@ -988,8 +987,7 @@ static int isp_pipeline_disable(struct isp_pipeline *pipe) break; pad = media_entity_remote_pad(pad); - if (pad == NULL || - media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) + if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) break; entity = pad->entity; diff --git a/drivers/media/platform/omap3isp/ispvideo.c b/drivers/media/platform/omap3isp/ispvideo.c index a2e53b34d95fb7..768efd775abca1 100644 --- a/drivers/media/platform/omap3isp/ispvideo.c +++ b/drivers/media/platform/omap3isp/ispvideo.c @@ -210,8 +210,7 @@ isp_video_remote_subdev(struct isp_video *video, u32 *pad) remote = media_entity_remote_pad(&video->pad); - if (remote == NULL || - media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV) + if (!remote || !is_media_entity_v4l2_subdev(remote->entity)) return NULL; if (pad) @@ -243,7 +242,7 @@ static int isp_video_get_graph_data(struct isp_video *video, if (entity == &video->video.entity) continue; - if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE) + if (!is_media_entity_v4l2_io(entity)) continue; __video = to_isp_video(media_entity_to_video_device(entity)); @@ -919,7 +918,7 @@ static int isp_video_check_external_subdevs(struct isp_video *video, return -EINVAL; } - if (media_entity_type(source) != MEDIA_ENT_T_V4L2_SUBDEV) + if (!is_media_entity_v4l2_subdev(source)) return 0; pipe->external = media_entity_to_v4l2_subdev(source); diff --git a/drivers/media/platform/s3c-camif/camif-capture.c b/drivers/media/platform/s3c-camif/camif-capture.c index a87ac16273a048..05bfa9d08b19e5 100644 --- a/drivers/media/platform/s3c-camif/camif-capture.c +++ b/drivers/media/platform/s3c-camif/camif-capture.c @@ -822,7 +822,7 @@ static int camif_pipeline_validate(struct camif_dev *camif) /* Retrieve format at the sensor subdev source pad */ pad = media_entity_remote_pad(&camif->pads[0]); - if (!pad || media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) + if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) return -EPIPE; src_fmt.pad = pad->index; diff --git a/drivers/media/platform/vsp1/vsp1_video.c b/drivers/media/platform/vsp1/vsp1_video.c index c2b2281bb5306d..024d10de3740dc 100644 --- a/drivers/media/platform/vsp1/vsp1_video.c +++ b/drivers/media/platform/vsp1/vsp1_video.c @@ -160,8 +160,7 @@ vsp1_video_remote_subdev(struct media_pad *local, u32 *pad) struct media_pad *remote; remote = media_entity_remote_pad(local); - if (remote == NULL || - media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV) + if (!remote || !is_media_entity_v4l2_subdev(remote->entity)) return NULL; if (pad) @@ -297,7 +296,7 @@ static int vsp1_pipeline_validate_branch(struct vsp1_pipeline *pipe, return -EPIPE; /* We've reached a video node, that shouldn't have happened. */ - if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) + if (!is_media_entity_v4l2_subdev(pad->entity)) return -EPIPE; entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity)); @@ -394,7 +393,7 @@ static int vsp1_pipeline_validate(struct vsp1_pipeline *pipe, struct vsp1_rwpf *rwpf; struct vsp1_entity *e; - if (media_entity_type(entity) != MEDIA_ENT_T_V4L2_SUBDEV) { + if (is_media_entity_v4l2_io(entity)) { pipe->num_video++; continue; } @@ -663,7 +662,7 @@ void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe, pad = media_entity_remote_pad(&input->pads[RWPF_PAD_SOURCE]); while (pad) { - if (media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) + if (!is_media_entity_v4l2_subdev(pad->entity)) break; entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity)); diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c index 9c8b2725425361..b3fb1570b1892d 100644 --- a/drivers/media/platform/xilinx/xilinx-dma.c +++ b/drivers/media/platform/xilinx/xilinx-dma.c @@ -49,8 +49,7 @@ xvip_dma_remote_subdev(struct media_pad *local, u32 *pad) struct media_pad *remote; remote = media_entity_remote_pad(local); - if (remote == NULL || - media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV) + if (!remote || !is_media_entity_v4l2_subdev(remote->entity)) return NULL; if (pad) @@ -113,8 +112,7 @@ static int xvip_pipeline_start_stop(struct xvip_pipeline *pipe, bool start) break; pad = media_entity_remote_pad(pad); - if (pad == NULL || - media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) + if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) break; entity = pad->entity; diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index e6e1115d82150b..60da43772de992 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -526,7 +526,7 @@ static int v4l2_subdev_link_validate_get_format(struct media_pad *pad, struct v4l2_subdev_format *fmt) { - if (media_entity_type(pad->entity) == MEDIA_ENT_T_V4L2_SUBDEV) { + if (is_media_entity_v4l2_subdev(pad->entity)) { struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(pad->entity); diff --git a/drivers/staging/media/davinci_vpfe/vpfe_video.c b/drivers/staging/media/davinci_vpfe/vpfe_video.c index 6e0d0375634d1e..d21d978e139e92 100644 --- a/drivers/staging/media/davinci_vpfe/vpfe_video.c +++ b/drivers/staging/media/davinci_vpfe/vpfe_video.c @@ -148,7 +148,7 @@ static void vpfe_prepare_pipeline(struct vpfe_video_device *video) while ((entity = media_entity_graph_walk_next(&graph))) { if (entity == &video->video_dev.entity) continue; - if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE) + if ((!is_media_entity_v4l2_io(remote->entity)) continue; far_end = to_vpfe_video(media_entity_to_video_device(entity)); if (far_end->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) @@ -293,7 +293,7 @@ static int vpfe_pipeline_enable(struct vpfe_pipeline *pipe) media_entity_graph_walk_start(&graph, entity); while ((entity = media_entity_graph_walk_next(&graph))) { - if (media_entity_type(entity) == MEDIA_ENT_T_DEVNODE) + if !is_media_entity_v4l2_subdev(entity)) continue; subdev = media_entity_to_v4l2_subdev(entity); ret = v4l2_subdev_call(subdev, video, s_stream, 1); @@ -334,7 +334,7 @@ static int vpfe_pipeline_disable(struct vpfe_pipeline *pipe) while ((entity = media_entity_graph_walk_next(&graph))) { - if (media_entity_type(entity) == MEDIA_ENT_T_DEVNODE) + if (!is_media_entity_v4l2_subdev(entity)) continue; subdev = media_entity_to_v4l2_subdev(entity); ret = v4l2_subdev_call(subdev, video, s_stream, 0); diff --git a/drivers/staging/media/omap4iss/iss.c b/drivers/staging/media/omap4iss/iss.c index fa761669fd863e..28e4d16544eb67 100644 --- a/drivers/staging/media/omap4iss/iss.c +++ b/drivers/staging/media/omap4iss/iss.c @@ -397,7 +397,7 @@ static int iss_pipeline_pm_use_count(struct media_entity *entity) media_entity_graph_walk_start(&graph, entity); while ((entity = media_entity_graph_walk_next(&graph))) { - if (media_entity_type(entity) == MEDIA_ENT_T_DEVNODE) + if (is_media_entity_v4l2_io(entity)) use += entity->use_count; } @@ -419,7 +419,7 @@ static int iss_pipeline_pm_power_one(struct media_entity *entity, int change) { struct v4l2_subdev *subdev; - subdev = media_entity_type(entity) == MEDIA_ENT_T_V4L2_SUBDEV + subdev = is_media_entity_v4l2_subdev(entity) ? media_entity_to_v4l2_subdev(entity) : NULL; if (entity->use_count == 0 && change > 0 && subdev) { @@ -461,7 +461,7 @@ static int iss_pipeline_pm_power(struct media_entity *entity, int change) media_entity_graph_walk_start(&graph, entity); while (!ret && (entity = media_entity_graph_walk_next(&graph))) - if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE) + if (is_media_entity_v4l2_subdev(entity)) ret = iss_pipeline_pm_power_one(entity, change); if (!ret) @@ -471,7 +471,7 @@ static int iss_pipeline_pm_power(struct media_entity *entity, int change) while ((first = media_entity_graph_walk_next(&graph)) && first != entity) - if (media_entity_type(first) != MEDIA_ENT_T_DEVNODE) + if (is_media_entity_v4l2_subdev(first)) iss_pipeline_pm_power_one(first, -change); return ret; @@ -590,8 +590,7 @@ static int iss_pipeline_disable(struct iss_pipeline *pipe, break; pad = media_entity_remote_pad(pad); - if (!pad || - media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) + if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) break; entity = pad->entity; @@ -658,8 +657,7 @@ static int iss_pipeline_enable(struct iss_pipeline *pipe, break; pad = media_entity_remote_pad(pad); - if (!pad || - media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) + if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) break; entity = pad->entity; diff --git a/drivers/staging/media/omap4iss/iss_video.c b/drivers/staging/media/omap4iss/iss_video.c index ea384630aab0e2..60b7a58e6122de 100644 --- a/drivers/staging/media/omap4iss/iss_video.c +++ b/drivers/staging/media/omap4iss/iss_video.c @@ -190,8 +190,7 @@ iss_video_remote_subdev(struct iss_video *video, u32 *pad) remote = media_entity_remote_pad(&video->pad); - if (!remote || - media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV) + if (!remote || !is_media_entity_v4l2_subdev(remote->entity)) return NULL; if (pad) @@ -216,7 +215,7 @@ iss_video_far_end(struct iss_video *video) if (entity == &video->video.entity) continue; - if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE) + if (!is_media_entity_v4l2_io(entity)) continue; far_end = to_iss_video(media_entity_to_video_device(entity)); -- cgit 1.2.3-korg From 59ecd59d782de82d8f2d2bfda2c28f87c0e8b35a Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 7 May 2015 22:12:33 -0300 Subject: [media] omap3/omap4/davinci: get rid of MEDIA_ENT_T_V4L2_SUBDEV abuse On omap3/omap4/davinci drivers, MEDIA_ENT_T_V4L2_SUBDEV macro is abused in order to "simplify" the pad checks. Basically, it does a logical or of this macro, in order to check for a local index and if the entity is either a subdev or not. As we'll get rid of MEDIA_ENT_T_V4L2_SUBDEV macro, replace it by 2 << 16 where it occurs, and add a note saying that the code there is actually a hack. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/omap3isp/ispccdc.c | 15 ++++++++----- drivers/media/platform/omap3isp/ispccp2.c | 13 +++++++---- drivers/media/platform/omap3isp/ispcsi2.c | 11 +++++++--- drivers/media/platform/omap3isp/isppreview.c | 15 ++++++++----- drivers/media/platform/omap3isp/ispresizer.c | 13 +++++++---- drivers/staging/media/davinci_vpfe/dm365_ipipeif.c | 13 +++++++---- drivers/staging/media/davinci_vpfe/dm365_isif.c | 13 +++++++---- drivers/staging/media/davinci_vpfe/dm365_resizer.c | 25 +++++++++++++--------- drivers/staging/media/davinci_vpfe/vpfe_video.c | 4 ++-- drivers/staging/media/omap4iss/iss_csi2.c | 11 +++++++--- drivers/staging/media/omap4iss/iss_ipipeif.c | 13 +++++++---- drivers/staging/media/omap4iss/iss_resizer.c | 11 +++++++--- 12 files changed, 106 insertions(+), 51 deletions(-) diff --git a/drivers/media/platform/omap3isp/ispccdc.c b/drivers/media/platform/omap3isp/ispccdc.c index 9a811f5741fa2c..f0e530c9818886 100644 --- a/drivers/media/platform/omap3isp/ispccdc.c +++ b/drivers/media/platform/omap3isp/ispccdc.c @@ -2513,9 +2513,14 @@ static int ccdc_link_setup(struct media_entity *entity, struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); struct isp_device *isp = to_isp_device(ccdc); + int index = local->index; - switch (local->index | media_entity_type(remote->entity)) { - case CCDC_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: + /* FIXME: this is actually a hack! */ + if (is_media_entity_v4l2_subdev(remote->entity)) + index |= 2 << 16; + + switch (index) { + case CCDC_PAD_SINK | 2 << 16: /* Read from the sensor (parallel interface), CCP2, CSI2a or * CSI2c. */ @@ -2543,7 +2548,7 @@ static int ccdc_link_setup(struct media_entity *entity, * Revisit this when it will be implemented, and return -EBUSY for now. */ - case CCDC_PAD_SOURCE_VP | MEDIA_ENT_T_V4L2_SUBDEV: + case CCDC_PAD_SOURCE_VP | 2 << 16: /* Write to preview engine, histogram and H3A. When none of * those links are active, the video port can be disabled. */ @@ -2556,7 +2561,7 @@ static int ccdc_link_setup(struct media_entity *entity, } break; - case CCDC_PAD_SOURCE_OF | MEDIA_ENT_T_DEVNODE: + case CCDC_PAD_SOURCE_OF: /* Write to memory */ if (flags & MEDIA_LNK_FL_ENABLED) { if (ccdc->output & ~CCDC_OUTPUT_MEMORY) @@ -2567,7 +2572,7 @@ static int ccdc_link_setup(struct media_entity *entity, } break; - case CCDC_PAD_SOURCE_OF | MEDIA_ENT_T_V4L2_SUBDEV: + case CCDC_PAD_SOURCE_OF | 2 << 16: /* Write to resizer */ if (flags & MEDIA_LNK_FL_ENABLED) { if (ccdc->output & ~CCDC_OUTPUT_RESIZER) diff --git a/drivers/media/platform/omap3isp/ispccp2.c b/drivers/media/platform/omap3isp/ispccp2.c index 6ec7d104ab75f5..ae3038e643ccf0 100644 --- a/drivers/media/platform/omap3isp/ispccp2.c +++ b/drivers/media/platform/omap3isp/ispccp2.c @@ -956,9 +956,14 @@ static int ccp2_link_setup(struct media_entity *entity, { struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd); + int index = local->index; - switch (local->index | media_entity_type(remote->entity)) { - case CCP2_PAD_SINK | MEDIA_ENT_T_DEVNODE: + /* FIXME: this is actually a hack! */ + if (is_media_entity_v4l2_subdev(remote->entity)) + index |= 2 << 16; + + switch (index) { + case CCP2_PAD_SINK: /* read from memory */ if (flags & MEDIA_LNK_FL_ENABLED) { if (ccp2->input == CCP2_INPUT_SENSOR) @@ -970,7 +975,7 @@ static int ccp2_link_setup(struct media_entity *entity, } break; - case CCP2_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: + case CCP2_PAD_SINK | 2 << 16: /* read from sensor/phy */ if (flags & MEDIA_LNK_FL_ENABLED) { if (ccp2->input == CCP2_INPUT_MEMORY) @@ -981,7 +986,7 @@ static int ccp2_link_setup(struct media_entity *entity, ccp2->input = CCP2_INPUT_NONE; } break; - case CCP2_PAD_SOURCE | MEDIA_ENT_T_V4L2_SUBDEV: + case CCP2_PAD_SOURCE | 2 << 16: /* write to video port/ccdc */ if (flags & MEDIA_LNK_FL_ENABLED) ccp2->output = CCP2_OUTPUT_CCDC; diff --git a/drivers/media/platform/omap3isp/ispcsi2.c b/drivers/media/platform/omap3isp/ispcsi2.c index 0fb057a74f69ed..b1617f7efdee29 100644 --- a/drivers/media/platform/omap3isp/ispcsi2.c +++ b/drivers/media/platform/omap3isp/ispcsi2.c @@ -1144,14 +1144,19 @@ static int csi2_link_setup(struct media_entity *entity, struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct isp_csi2_device *csi2 = v4l2_get_subdevdata(sd); struct isp_csi2_ctrl_cfg *ctrl = &csi2->ctrl; + int index = local->index; /* * The ISP core doesn't support pipelines with multiple video outputs. * Revisit this when it will be implemented, and return -EBUSY for now. */ - switch (local->index | media_entity_type(remote->entity)) { - case CSI2_PAD_SOURCE | MEDIA_ENT_T_DEVNODE: + /* FIXME: this is actually a hack! */ + if (is_media_entity_v4l2_subdev(remote->entity)) + index |= 2 << 16; + + switch (index) { + case CSI2_PAD_SOURCE: if (flags & MEDIA_LNK_FL_ENABLED) { if (csi2->output & ~CSI2_OUTPUT_MEMORY) return -EBUSY; @@ -1161,7 +1166,7 @@ static int csi2_link_setup(struct media_entity *entity, } break; - case CSI2_PAD_SOURCE | MEDIA_ENT_T_V4L2_SUBDEV: + case CSI2_PAD_SOURCE | 2 << 16: if (flags & MEDIA_LNK_FL_ENABLED) { if (csi2->output & ~CSI2_OUTPUT_CCDC) return -EBUSY; diff --git a/drivers/media/platform/omap3isp/isppreview.c b/drivers/media/platform/omap3isp/isppreview.c index 6986d2f65c19cd..cfb2debb02bfef 100644 --- a/drivers/media/platform/omap3isp/isppreview.c +++ b/drivers/media/platform/omap3isp/isppreview.c @@ -2144,9 +2144,14 @@ static int preview_link_setup(struct media_entity *entity, { struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct isp_prev_device *prev = v4l2_get_subdevdata(sd); + int index = local->index; - switch (local->index | media_entity_type(remote->entity)) { - case PREV_PAD_SINK | MEDIA_ENT_T_DEVNODE: + /* FIXME: this is actually a hack! */ + if (is_media_entity_v4l2_subdev(remote->entity)) + index |= 2 << 16; + + switch (index) { + case PREV_PAD_SINK: /* read from memory */ if (flags & MEDIA_LNK_FL_ENABLED) { if (prev->input == PREVIEW_INPUT_CCDC) @@ -2158,7 +2163,7 @@ static int preview_link_setup(struct media_entity *entity, } break; - case PREV_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: + case PREV_PAD_SINK | 2 << 16: /* read from ccdc */ if (flags & MEDIA_LNK_FL_ENABLED) { if (prev->input == PREVIEW_INPUT_MEMORY) @@ -2175,7 +2180,7 @@ static int preview_link_setup(struct media_entity *entity, * Revisit this when it will be implemented, and return -EBUSY for now. */ - case PREV_PAD_SOURCE | MEDIA_ENT_T_DEVNODE: + case PREV_PAD_SOURCE: /* write to memory */ if (flags & MEDIA_LNK_FL_ENABLED) { if (prev->output & ~PREVIEW_OUTPUT_MEMORY) @@ -2186,7 +2191,7 @@ static int preview_link_setup(struct media_entity *entity, } break; - case PREV_PAD_SOURCE | MEDIA_ENT_T_V4L2_SUBDEV: + case PREV_PAD_SOURCE | 2 << 16: /* write to resizer */ if (flags & MEDIA_LNK_FL_ENABLED) { if (prev->output & ~PREVIEW_OUTPUT_RESIZER) diff --git a/drivers/media/platform/omap3isp/ispresizer.c b/drivers/media/platform/omap3isp/ispresizer.c index 249af7f524f906..e3ecf1787fc47e 100644 --- a/drivers/media/platform/omap3isp/ispresizer.c +++ b/drivers/media/platform/omap3isp/ispresizer.c @@ -1623,9 +1623,14 @@ static int resizer_link_setup(struct media_entity *entity, { struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct isp_res_device *res = v4l2_get_subdevdata(sd); + int index = local->index; - switch (local->index | media_entity_type(remote->entity)) { - case RESZ_PAD_SINK | MEDIA_ENT_T_DEVNODE: + /* FIXME: this is actually a hack! */ + if (is_media_entity_v4l2_subdev(remote->entity)) + index |= 2 << 16; + + switch (index) { + case RESZ_PAD_SINK: /* read from memory */ if (flags & MEDIA_LNK_FL_ENABLED) { if (res->input == RESIZER_INPUT_VP) @@ -1637,7 +1642,7 @@ static int resizer_link_setup(struct media_entity *entity, } break; - case RESZ_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: + case RESZ_PAD_SINK | 2 << 16: /* read from ccdc or previewer */ if (flags & MEDIA_LNK_FL_ENABLED) { if (res->input == RESIZER_INPUT_MEMORY) @@ -1649,7 +1654,7 @@ static int resizer_link_setup(struct media_entity *entity, } break; - case RESZ_PAD_SOURCE | MEDIA_ENT_T_DEVNODE: + case RESZ_PAD_SOURCE: /* resizer always write to memory */ break; diff --git a/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c b/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c index d96bdaaae50e50..b66584ecb6933b 100644 --- a/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c +++ b/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c @@ -885,9 +885,14 @@ ipipeif_link_setup(struct media_entity *entity, const struct media_pad *local, struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct vpfe_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd); struct vpfe_device *vpfe = to_vpfe_device(ipipeif); + int index = local->index; - switch (local->index | media_entity_type(remote->entity)) { - case IPIPEIF_PAD_SINK | MEDIA_ENT_T_DEVNODE: + /* FIXME: this is actually a hack! */ + if (is_media_entity_v4l2_subdev(remote->entity)) + index |= 2 << 16; + + switch (index) { + case IPIPEIF_PAD_SINK: /* Single shot mode */ if (!(flags & MEDIA_LNK_FL_ENABLED)) { ipipeif->input = IPIPEIF_INPUT_NONE; @@ -896,7 +901,7 @@ ipipeif_link_setup(struct media_entity *entity, const struct media_pad *local, ipipeif->input = IPIPEIF_INPUT_MEMORY; break; - case IPIPEIF_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: + case IPIPEIF_PAD_SINK | 2 << 16: /* read from isif */ if (!(flags & MEDIA_LNK_FL_ENABLED)) { ipipeif->input = IPIPEIF_INPUT_NONE; @@ -908,7 +913,7 @@ ipipeif_link_setup(struct media_entity *entity, const struct media_pad *local, ipipeif->input = IPIPEIF_INPUT_ISIF; break; - case IPIPEIF_PAD_SOURCE | MEDIA_ENT_T_V4L2_SUBDEV: + case IPIPEIF_PAD_SOURCE | 2 << 16: if (!(flags & MEDIA_LNK_FL_ENABLED)) { ipipeif->output = IPIPEIF_OUTPUT_NONE; break; diff --git a/drivers/staging/media/davinci_vpfe/dm365_isif.c b/drivers/staging/media/davinci_vpfe/dm365_isif.c index df77288b0ec028..8ca0c1297ec8c4 100644 --- a/drivers/staging/media/davinci_vpfe/dm365_isif.c +++ b/drivers/staging/media/davinci_vpfe/dm365_isif.c @@ -1707,9 +1707,14 @@ isif_link_setup(struct media_entity *entity, const struct media_pad *local, { struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct vpfe_isif_device *isif = v4l2_get_subdevdata(sd); + int index = local->index; - switch (local->index | media_entity_type(remote->entity)) { - case ISIF_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: + /* FIXME: this is actually a hack! */ + if (is_media_entity_v4l2_subdev(remote->entity)) + index |= 2 << 16; + + switch (index) { + case ISIF_PAD_SINK | 2 << 16: /* read from decoder/sensor */ if (!(flags & MEDIA_LNK_FL_ENABLED)) { isif->input = ISIF_INPUT_NONE; @@ -1720,7 +1725,7 @@ isif_link_setup(struct media_entity *entity, const struct media_pad *local, isif->input = ISIF_INPUT_PARALLEL; break; - case ISIF_PAD_SOURCE | MEDIA_ENT_T_DEVNODE: + case ISIF_PAD_SOURCE: /* write to memory */ if (flags & MEDIA_LNK_FL_ENABLED) isif->output = ISIF_OUTPUT_MEMORY; @@ -1728,7 +1733,7 @@ isif_link_setup(struct media_entity *entity, const struct media_pad *local, isif->output = ISIF_OUTPUT_NONE; break; - case ISIF_PAD_SOURCE | MEDIA_ENT_T_V4L2_SUBDEV: + case ISIF_PAD_SOURCE | 2 << 16: if (flags & MEDIA_LNK_FL_ENABLED) isif->output = ISIF_OUTPUT_IPIPEIF; else diff --git a/drivers/staging/media/davinci_vpfe/dm365_resizer.c b/drivers/staging/media/davinci_vpfe/dm365_resizer.c index 50c8725c5aa60b..ba887efd226a37 100644 --- a/drivers/staging/media/davinci_vpfe/dm365_resizer.c +++ b/drivers/staging/media/davinci_vpfe/dm365_resizer.c @@ -1648,10 +1648,15 @@ static int resizer_link_setup(struct media_entity *entity, struct vpfe_device *vpfe_dev = to_vpfe_device(resizer); u16 ipipeif_source = vpfe_dev->vpfe_ipipeif.output; u16 ipipe_source = vpfe_dev->vpfe_ipipe.output; + int index = local->index; + + /* FIXME: this is actually a hack! */ + if (is_media_entity_v4l2_subdev(remote->entity)) + index |= 2 << 16; if (&resizer->crop_resizer.subdev == sd) { - switch (local->index | media_entity_type(remote->entity)) { - case RESIZER_CROP_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: + switch (index) { + case RESIZER_CROP_PAD_SINK | 2 << 16: if (!(flags & MEDIA_LNK_FL_ENABLED)) { resizer->crop_resizer.input = RESIZER_CROP_INPUT_NONE; @@ -1671,7 +1676,7 @@ static int resizer_link_setup(struct media_entity *entity, return -EINVAL; break; - case RESIZER_CROP_PAD_SOURCE | MEDIA_ENT_T_V4L2_SUBDEV: + case RESIZER_CROP_PAD_SOURCE | 2 << 16: if (!(flags & MEDIA_LNK_FL_ENABLED)) { resizer->crop_resizer.output = RESIZER_CROP_OUTPUT_NONE; @@ -1683,7 +1688,7 @@ static int resizer_link_setup(struct media_entity *entity, resizer->crop_resizer.output = RESIZER_A; break; - case RESIZER_CROP_PAD_SOURCE2 | MEDIA_ENT_T_V4L2_SUBDEV: + case RESIZER_CROP_PAD_SOURCE2 | 2 << 16: if (!(flags & MEDIA_LNK_FL_ENABLED)) { resizer->crop_resizer.output2 = RESIZER_CROP_OUTPUT_NONE; @@ -1699,8 +1704,8 @@ static int resizer_link_setup(struct media_entity *entity, return -EINVAL; } } else if (&resizer->resizer_a.subdev == sd) { - switch (local->index | media_entity_type(remote->entity)) { - case RESIZER_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: + switch (index) { + case RESIZER_PAD_SINK | 2 << 16: if (!(flags & MEDIA_LNK_FL_ENABLED)) { resizer->resizer_a.input = RESIZER_INPUT_NONE; break; @@ -1710,7 +1715,7 @@ static int resizer_link_setup(struct media_entity *entity, resizer->resizer_a.input = RESIZER_INPUT_CROP_RESIZER; break; - case RESIZER_PAD_SOURCE | MEDIA_ENT_T_DEVNODE: + case RESIZER_PAD_SOURCE: if (!(flags & MEDIA_LNK_FL_ENABLED)) { resizer->resizer_a.output = RESIZER_OUTPUT_NONE; break; @@ -1724,8 +1729,8 @@ static int resizer_link_setup(struct media_entity *entity, return -EINVAL; } } else if (&resizer->resizer_b.subdev == sd) { - switch (local->index | media_entity_type(remote->entity)) { - case RESIZER_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: + switch (index) { + case RESIZER_PAD_SINK | 2 << 16: if (!(flags & MEDIA_LNK_FL_ENABLED)) { resizer->resizer_b.input = RESIZER_INPUT_NONE; break; @@ -1735,7 +1740,7 @@ static int resizer_link_setup(struct media_entity *entity, resizer->resizer_b.input = RESIZER_INPUT_CROP_RESIZER; break; - case RESIZER_PAD_SOURCE | MEDIA_ENT_T_DEVNODE: + case RESIZER_PAD_SOURCE: if (!(flags & MEDIA_LNK_FL_ENABLED)) { resizer->resizer_b.output = RESIZER_OUTPUT_NONE; break; diff --git a/drivers/staging/media/davinci_vpfe/vpfe_video.c b/drivers/staging/media/davinci_vpfe/vpfe_video.c index d21d978e139e92..290f4b490b7646 100644 --- a/drivers/staging/media/davinci_vpfe/vpfe_video.c +++ b/drivers/staging/media/davinci_vpfe/vpfe_video.c @@ -148,7 +148,7 @@ static void vpfe_prepare_pipeline(struct vpfe_video_device *video) while ((entity = media_entity_graph_walk_next(&graph))) { if (entity == &video->video_dev.entity) continue; - if ((!is_media_entity_v4l2_io(remote->entity)) + if (!is_media_entity_v4l2_io(entity)) continue; far_end = to_vpfe_video(media_entity_to_video_device(entity)); if (far_end->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) @@ -293,7 +293,7 @@ static int vpfe_pipeline_enable(struct vpfe_pipeline *pipe) media_entity_graph_walk_start(&graph, entity); while ((entity = media_entity_graph_walk_next(&graph))) { - if !is_media_entity_v4l2_subdev(entity)) + if (!is_media_entity_v4l2_subdev(entity)) continue; subdev = media_entity_to_v4l2_subdev(entity); ret = v4l2_subdev_call(subdev, video, s_stream, 1); diff --git a/drivers/staging/media/omap4iss/iss_csi2.c b/drivers/staging/media/omap4iss/iss_csi2.c index 13878a27527795..2b9a36cd8fa8ee 100644 --- a/drivers/staging/media/omap4iss/iss_csi2.c +++ b/drivers/staging/media/omap4iss/iss_csi2.c @@ -1170,14 +1170,19 @@ static int csi2_link_setup(struct media_entity *entity, struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct iss_csi2_device *csi2 = v4l2_get_subdevdata(sd); struct iss_csi2_ctrl_cfg *ctrl = &csi2->ctrl; + int index = local->index; + + /* FIXME: this is actually a hack! */ + if (is_media_entity_v4l2_subdev(remote->entity)) + index |= 2 << 16; /* * The ISS core doesn't support pipelines with multiple video outputs. * Revisit this when it will be implemented, and return -EBUSY for now. */ - switch (local->index | media_entity_type(remote->entity)) { - case CSI2_PAD_SOURCE | MEDIA_ENT_T_DEVNODE: + switch (index) { + case CSI2_PAD_SOURCE: if (flags & MEDIA_LNK_FL_ENABLED) { if (csi2->output & ~CSI2_OUTPUT_MEMORY) return -EBUSY; @@ -1187,7 +1192,7 @@ static int csi2_link_setup(struct media_entity *entity, } break; - case CSI2_PAD_SOURCE | MEDIA_ENT_T_V4L2_SUBDEV: + case CSI2_PAD_SOURCE | 2 << 16: if (flags & MEDIA_LNK_FL_ENABLED) { if (csi2->output & ~CSI2_OUTPUT_IPIPEIF) return -EBUSY; diff --git a/drivers/staging/media/omap4iss/iss_ipipeif.c b/drivers/staging/media/omap4iss/iss_ipipeif.c index 82608cbb1f5fa0..8cbb9840a989cf 100644 --- a/drivers/staging/media/omap4iss/iss_ipipeif.c +++ b/drivers/staging/media/omap4iss/iss_ipipeif.c @@ -662,9 +662,14 @@ static int ipipeif_link_setup(struct media_entity *entity, struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd); struct iss_device *iss = to_iss_device(ipipeif); + int index = local->index; - switch (local->index | media_entity_type(remote->entity)) { - case IPIPEIF_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: + /* FIXME: this is actually a hack! */ + if (is_media_entity_v4l2_subdev(remote->entity)) + index |= 2 << 16; + + switch (index) { + case IPIPEIF_PAD_SINK | 2 << 16: /* Read from the sensor CSI2a or CSI2b. */ if (!(flags & MEDIA_LNK_FL_ENABLED)) { ipipeif->input = IPIPEIF_INPUT_NONE; @@ -681,7 +686,7 @@ static int ipipeif_link_setup(struct media_entity *entity, break; - case IPIPEIF_PAD_SOURCE_ISIF_SF | MEDIA_ENT_T_DEVNODE: + case IPIPEIF_PAD_SOURCE_ISIF_SF: /* Write to memory */ if (flags & MEDIA_LNK_FL_ENABLED) { if (ipipeif->output & ~IPIPEIF_OUTPUT_MEMORY) @@ -692,7 +697,7 @@ static int ipipeif_link_setup(struct media_entity *entity, } break; - case IPIPEIF_PAD_SOURCE_VP | MEDIA_ENT_T_V4L2_SUBDEV: + case IPIPEIF_PAD_SOURCE_VP | 2 << 16: /* Send to IPIPE/RESIZER */ if (flags & MEDIA_LNK_FL_ENABLED) { if (ipipeif->output & ~IPIPEIF_OUTPUT_VP) diff --git a/drivers/staging/media/omap4iss/iss_resizer.c b/drivers/staging/media/omap4iss/iss_resizer.c index 4a474873a8df0d..a3925ecd0ed795 100644 --- a/drivers/staging/media/omap4iss/iss_resizer.c +++ b/drivers/staging/media/omap4iss/iss_resizer.c @@ -716,9 +716,14 @@ static int resizer_link_setup(struct media_entity *entity, struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct iss_resizer_device *resizer = v4l2_get_subdevdata(sd); struct iss_device *iss = to_iss_device(resizer); + int index = local->index; - switch (local->index | media_entity_type(remote->entity)) { - case RESIZER_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: + /* FIXME: this is actually a hack! */ + if (is_media_entity_v4l2_subdev(remote->entity)) + index |= 2 << 16; + + switch (index) { + case RESIZER_PAD_SINK | 2 << 16: /* Read from IPIPE or IPIPEIF. */ if (!(flags & MEDIA_LNK_FL_ENABLED)) { resizer->input = RESIZER_INPUT_NONE; @@ -735,7 +740,7 @@ static int resizer_link_setup(struct media_entity *entity, break; - case RESIZER_PAD_SOURCE_MEM | MEDIA_ENT_T_DEVNODE: + case RESIZER_PAD_SOURCE_MEM: /* Write to memory */ if (flags & MEDIA_LNK_FL_ENABLED) { if (resizer->output & ~RESIZER_OUTPUT_MEMORY) -- cgit 1.2.3-korg From cb716165536cde417de54de4657454bf39a8ba4d Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 7 May 2015 22:12:34 -0300 Subject: [media] s5c73m3: fix subdev type This sensor driver is abusing MEDIA_ENT_T_V4L2_SUBDEV, creating some subdevs with a non-existing type. As this is a sensor driver, one of the entries is MEDIA_ENT_T_CAM_SENSOR. The other one will be using MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN, because the subdev is not any of the already existing types. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/i2c/s5c73m3/s5c73m3-core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/media/i2c/s5c73m3/s5c73m3-core.c b/drivers/media/i2c/s5c73m3/s5c73m3-core.c index 45c823b68f489b..ee7404ee665973 100644 --- a/drivers/media/i2c/s5c73m3/s5c73m3-core.c +++ b/drivers/media/i2c/s5c73m3/s5c73m3-core.c @@ -1688,7 +1688,7 @@ static int s5c73m3_probe(struct i2c_client *client, state->sensor_pads[S5C73M3_JPEG_PAD].flags = MEDIA_PAD_FL_SOURCE; state->sensor_pads[S5C73M3_ISP_PAD].flags = MEDIA_PAD_FL_SOURCE; - sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV; + sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; ret = media_entity_init(&sd->entity, S5C73M3_NUM_PADS, state->sensor_pads); @@ -1704,7 +1704,7 @@ static int s5c73m3_probe(struct i2c_client *client, state->oif_pads[OIF_ISP_PAD].flags = MEDIA_PAD_FL_SINK; state->oif_pads[OIF_JPEG_PAD].flags = MEDIA_PAD_FL_SINK; state->oif_pads[OIF_SOURCE_PAD].flags = MEDIA_PAD_FL_SOURCE; - oif_sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV; + oif_sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN; ret = media_entity_init(&oif_sd->entity, OIF_NUM_PADS, state->oif_pads); -- cgit 1.2.3-korg From 26614b9bf8b534406835ea66732c12e6fd7b50fd Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 7 May 2015 22:12:35 -0300 Subject: [media] s5k5baf: fix subdev type The driver creates two subdevs, one for the image sensor pixel array (and the related readout logic) and one for an ISP. The first subdev already uses the MEDIA_ENT_T_V4L2_SUBDEV_SENSOR type, but the second subdev isn't a sensor pixel array. So, rename the second subdev as MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/i2c/s5k5baf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/i2c/s5k5baf.c b/drivers/media/i2c/s5k5baf.c index d3bff30bcb6f8a..3e929858d5be1e 100644 --- a/drivers/media/i2c/s5k5baf.c +++ b/drivers/media/i2c/s5k5baf.c @@ -1919,7 +1919,7 @@ static int s5k5baf_configure_subdevs(struct s5k5baf *state, state->pads[PAD_CIS].flags = MEDIA_PAD_FL_SINK; state->pads[PAD_OUT].flags = MEDIA_PAD_FL_SOURCE; - sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV; + sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN; ret = media_entity_init(&sd->entity, NUM_ISP_PADS, state->pads); if (!ret) -- cgit 1.2.3-korg From 14fae6fc53b2b390bbba650d60b9555e9f7f4f26 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 7 May 2015 22:12:36 -0300 Subject: [media] davinci_vbpe: stop MEDIA_ENT_T_V4L2_SUBDEV abuse This driver is abusing MEDIA_ENT_T_V4L2_SUBDEV: - it uses a hack to check if the remote entity is a subdev; - it still uses the legacy entity subtype check macro, that will be removed soon. Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/media/davinci_vpfe/dm365_ipipe.c | 9 ++++++--- drivers/staging/media/davinci_vpfe/vpfe_video.c | 5 ++--- 2 files changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/staging/media/davinci_vpfe/dm365_ipipe.c b/drivers/staging/media/davinci_vpfe/dm365_ipipe.c index 3badf169c419aa..77837afab0ce65 100644 --- a/drivers/staging/media/davinci_vpfe/dm365_ipipe.c +++ b/drivers/staging/media/davinci_vpfe/dm365_ipipe.c @@ -1712,8 +1712,11 @@ ipipe_link_setup(struct media_entity *entity, const struct media_pad *local, struct vpfe_device *vpfe_dev = to_vpfe_device(ipipe); u16 ipipeif_sink = vpfe_dev->vpfe_ipipeif.input; - switch (local->index | media_entity_type(remote->entity)) { - case IPIPE_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: + if (!is_media_entity_v4l2_subdev(remote->entity)) + return -EINVAL; + + switch (local->index) { + case IPIPE_PAD_SINK: if (!(flags & MEDIA_LNK_FL_ENABLED)) { ipipe->input = IPIPE_INPUT_NONE; break; @@ -1726,7 +1729,7 @@ ipipe_link_setup(struct media_entity *entity, const struct media_pad *local, ipipe->input = IPIPE_INPUT_CCDC; break; - case IPIPE_PAD_SOURCE | MEDIA_ENT_T_V4L2_SUBDEV: + case IPIPE_PAD_SOURCE: /* out to RESIZER */ if (flags & MEDIA_LNK_FL_ENABLED) ipipe->output = IPIPE_OUTPUT_RESIZER; diff --git a/drivers/staging/media/davinci_vpfe/vpfe_video.c b/drivers/staging/media/davinci_vpfe/vpfe_video.c index 290f4b490b7646..a5e30413fc47cc 100644 --- a/drivers/staging/media/davinci_vpfe/vpfe_video.c +++ b/drivers/staging/media/davinci_vpfe/vpfe_video.c @@ -88,7 +88,7 @@ vpfe_video_remote_subdev(struct vpfe_video_device *video, u32 *pad) { struct media_pad *remote = media_entity_remote_pad(&video->pad); - if (remote == NULL || remote->entity->type != MEDIA_ENT_T_V4L2_SUBDEV) + if (!remote || !is_media_entity_v4l2_subdev(remote->entity)) return NULL; if (pad) *pad = remote->index; @@ -243,8 +243,7 @@ static int vpfe_video_validate_pipeline(struct vpfe_pipeline *pipe) /* Retrieve the source format */ pad = media_entity_remote_pad(pad); - if (pad == NULL || - pad->entity->type != MEDIA_ENT_T_V4L2_SUBDEV) + if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) break; subdev = media_entity_to_v4l2_subdev(pad->entity); -- cgit 1.2.3-korg From bf4178a4c63443da1475c9c1bbb39963e75aa69b Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 7 May 2015 22:12:37 -0300 Subject: [media] omap4iss: change the logic that checks if an entity is a subdev As we're getting rid of an specific number range for the V4L2 subdev, we need to replace the check for MEDIA_ENT_T_V4L2_SUBDEV by a macro. Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/media/omap4iss/iss_ipipe.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/staging/media/omap4iss/iss_ipipe.c b/drivers/staging/media/omap4iss/iss_ipipe.c index 44220765fb3aa9..dd9d7d54e6f86a 100644 --- a/drivers/staging/media/omap4iss/iss_ipipe.c +++ b/drivers/staging/media/omap4iss/iss_ipipe.c @@ -447,8 +447,11 @@ static int ipipe_link_setup(struct media_entity *entity, struct iss_ipipe_device *ipipe = v4l2_get_subdevdata(sd); struct iss_device *iss = to_iss_device(ipipe); - switch (local->index | media_entity_type(remote->entity)) { - case IPIPE_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: + if (!is_media_entity_v4l2_subdev(remote->entity)) + return -EINVAL; + + switch (local->index) { + case IPIPE_PAD_SINK: /* Read from IPIPEIF. */ if (!(flags & MEDIA_LNK_FL_ENABLED)) { ipipe->input = IPIPE_INPUT_NONE; @@ -463,7 +466,7 @@ static int ipipe_link_setup(struct media_entity *entity, break; - case IPIPE_PAD_SOURCE_VP | MEDIA_ENT_T_V4L2_SUBDEV: + case IPIPE_PAD_SOURCE_VP: /* Send to RESIZER */ if (flags & MEDIA_LNK_FL_ENABLED) { if (ipipe->output & ~IPIPE_OUTPUT_VP) -- cgit 1.2.3-korg From b50bde4e476dede4a28e9c8fdcd134da2f34ef2e Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 7 May 2015 22:12:38 -0300 Subject: [media] v4l2-subdev: use MEDIA_ENT_T_UNKNOWN for new subdevs Instead of abusing MEDIA_ENT_T_V4L2_SUBDEV, initialize new subdev entities as MEDIA_ENT_T_UNKNOWN. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 6 ++++++ drivers/media/v4l2-core/v4l2-subdev.c | 2 +- include/uapi/linux/media.h | 14 ++++++++++++++ 3 files changed, 21 insertions(+), 1 deletion(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 659507bce63f56..134fe751019506 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -435,6 +435,12 @@ int __must_check media_device_register_entity(struct media_device *mdev, { int i; + if (entity->type == MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN || + entity->type == MEDIA_ENT_T_UNKNOWN) + dev_warn(mdev->dev, + "Entity type for entity %s was not initialized!\n", + entity->name); + /* Warn if we apparently re-register an entity */ WARN_ON(entity->graph_obj.mdev != NULL); entity->graph_obj.mdev = mdev; diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index 60da43772de992..b3bcc8253182b6 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -584,7 +584,7 @@ void v4l2_subdev_init(struct v4l2_subdev *sd, const struct v4l2_subdev_ops *ops) sd->host_priv = NULL; #if defined(CONFIG_MEDIA_CONTROLLER) sd->entity.name = sd->name; - sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV; + sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN; #endif } EXPORT_SYMBOL(v4l2_subdev_init); diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h index c9314645d93309..43109445d12657 100644 --- a/include/uapi/linux/media.h +++ b/include/uapi/linux/media.h @@ -42,6 +42,14 @@ struct media_device_info { #define MEDIA_ENT_ID_FLAG_NEXT (1 << 31) +/* Used values for media_entity_desc::type */ + +/* + * Initial value to be used when a new entity is created + * Drivers should change it to something useful + */ +#define MEDIA_ENT_T_UNKNOWN 0x00000000 + /* * Base numbers for entity types * @@ -76,6 +84,12 @@ struct media_device_info { /* V4L2 Sub-device entities */ +/* + * Subdevs are initialized with MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN, + * in order to preserve backward compatibility. + * Drivers should change to the proper subdev type before + * registering the entity. + */ #define MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN MEDIA_ENT_T_V4L2_SUBDEV_BASE #define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 1) -- cgit 1.2.3-korg From 687b4209c83e9b0633f794949c0bc6fb1401ccba Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 7 May 2015 22:12:39 -0300 Subject: [media] media controller: get rid of entity subtype on Kernel Don't use anymore the type/subtype entity data/macros inside the Kernel. Acked-by: Hans Verkuil Acked-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- include/media/media-entity.h | 10 ---------- include/uapi/linux/media.h | 2 -- 2 files changed, 12 deletions(-) diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 2596878f4b9f1a..5171e3c1c71a58 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -185,16 +185,6 @@ struct media_intf_devnode { u32 minor; }; -static inline u32 media_entity_type(struct media_entity *entity) -{ - return entity->type & MEDIA_ENT_TYPE_MASK; -} - -static inline u32 media_entity_subtype(struct media_entity *entity) -{ - return entity->type & MEDIA_ENT_SUBTYPE_MASK; -} - static inline u32 media_entity_id(struct media_entity *entity) { return entity->graph_obj.id; diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h index 43109445d12657..ecb6ac865905d1 100644 --- a/include/uapi/linux/media.h +++ b/include/uapi/linux/media.h @@ -42,8 +42,6 @@ struct media_device_info { #define MEDIA_ENT_ID_FLAG_NEXT (1 << 31) -/* Used values for media_entity_desc::type */ - /* * Initial value to be used when a new entity is created * Drivers should change it to something useful -- cgit 1.2.3-korg From 4376679a3426c88caba883bcaf4e9af04eba6d9d Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sat, 29 Aug 2015 14:50:46 -0300 Subject: [media] media.h: don't use legacy entity macros at Kernel Put the legacy MEDIA_ENT_* macros under a #ifndef __KERNEL__, in order to be sure that none of those old symbols are used inside the Kernel. Acked-by: Laurent Pinchart Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/uapi/linux/media.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h index ecb6ac865905d1..3c4080106df8bf 100644 --- a/include/uapi/linux/media.h +++ b/include/uapi/linux/media.h @@ -105,6 +105,7 @@ struct media_device_info { #define MEDIA_ENT_T_DVB_CA (MEDIA_ENT_T_DVB_BASE + 4) #define MEDIA_ENT_T_DVB_NET_DECAP (MEDIA_ENT_T_DVB_BASE + 5) +#ifndef __KERNEL__ /* Legacy symbols used to avoid userspace compilation breakages */ #define MEDIA_ENT_TYPE_SHIFT 16 #define MEDIA_ENT_TYPE_MASK 0x00ff0000 @@ -118,6 +119,7 @@ struct media_device_info { #define MEDIA_ENT_T_DEVNODE_FB (MEDIA_ENT_T_DEVNODE + 2) #define MEDIA_ENT_T_DEVNODE_ALSA (MEDIA_ENT_T_DEVNODE + 3) #define MEDIA_ENT_T_DEVNODE_DVB (MEDIA_ENT_T_DEVNODE + 4) +#endif /* Entity types */ -- cgit 1.2.3-korg From 4ae1723af80ce5a23fa5bc6db1534265af0d6107 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 7 May 2015 22:12:40 -0300 Subject: [media] DocBook: update descriptions for the media controller entities Cleanup the media controller entities description: - remove MEDIA_ENT_T_DEVNODE and MEDIA_ENT_T_V4L2_SUBDEV entity types, as they don't mean anything; - add MEDIA_ENT_T_UNKNOWN with a proper description; - remove ALSA and FB entity types. Those should not be used, as the types are deprecated. We'll soon be adidng ALSA, but with a different entity namespace; - improve the description of some entities. Signed-off-by: Mauro Carvalho Chehab --- .../DocBook/media/v4l/media-ioc-enum-entities.xml | 47 ++++++++++------------ 1 file changed, 22 insertions(+), 25 deletions(-) diff --git a/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml b/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml index 32a78363564910..13d0b5891fb761 100644 --- a/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml +++ b/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml @@ -179,70 +179,67 @@ - MEDIA_ENT_T_DEVNODE - Unknown device node + MEDIA_ENT_T_UNKNOWN and MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN + Unknown entity. That generally indicates that + a driver didn't initialize properly the entity, with is a Kernel bug MEDIA_ENT_T_V4L2_VIDEO - V4L video, radio or vbi device node + V4L video streaming input or output entity - MEDIA_ENT_T_DEVNODE_FB - Frame buffer device node + MEDIA_ENT_T_V4L2_VBI + V4L VBI streaming input or output entity - MEDIA_ENT_T_DEVNODE_ALSA - ALSA card + MEDIA_ENT_T_V4L2_SWRADIO + V4L Software Digital Radio (SDR) streaming input or output entity MEDIA_ENT_T_DVB_DEMOD - DVB frontend devnode + DVB demodulator entity MEDIA_ENT_T_DVB_DEMUX - DVB demux devnode + DVB demux entity. Can be implemented in hardware or in Kernelspace MEDIA_ENT_T_DVB_TSOUT - DVB DVR devnode + DVB Transport Stream output entity MEDIA_ENT_T_DVB_CA - DVB CAM devnode + DVB Conditional Access module (CAM) entity MEDIA_ENT_T_DVB_DEMOD_NET_DECAP - DVB network devnode - - - MEDIA_ENT_T_V4L2_SUBDEV - Unknown V4L sub-device + DVB network ULE/MLE de-encapsulation entity. Can be implemented in hardware or in Kernelspace MEDIA_ENT_T_V4L2_SUBDEV_SENSOR - Video sensor + Camera image sensor entity MEDIA_ENT_T_V4L2_SUBDEV_FLASH - Flash controller + Flash controller entity MEDIA_ENT_T_V4L2_SUBDEV_LENS - Lens controller + Lens controller entity MEDIA_ENT_T_V4L2_SUBDEV_DECODER - Video decoder, the basic function of the video decoder is to - accept analogue video from a wide variety of sources such as + Analog video decoder, the basic function of the video decoder + is to accept analogue video from a wide variety of sources such as broadcast, DVD players, cameras and video cassette recorders, in - either NTSC, PAL or HD format and still occasionally SECAM, separate - it into its component parts, luminance and chrominance, and output - it in some digital video standard, with appropriate embedded timing + either NTSC, PAL, SECAM or HD format, separating the stream + into its component parts, luminance and chrominance, and output + it in some digital video standard, with appropriate timing signals. MEDIA_ENT_T_V4L2_SUBDEV_TUNER - TV and/or radio tuner + Digital TV, analog TV, radio and/or software radio tuner -- cgit 1.2.3-korg From df2f94e563edcbcb4b8652d05a3789d03b395366 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 21 Aug 2015 16:18:18 -0300 Subject: [media] dvb: modify core to implement interfaces/entities at MC new gen The Media Controller New Generation redefines the types for both interfaces and entities to be used on DVB. Make the needed changes at the DVB core for all interfaces, entities and data and interface links to appear in the graph. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-core/dmxdev.c | 4 +- drivers/media/dvb-core/dvb_ca_en50221.c | 2 +- drivers/media/dvb-core/dvb_frontend.c | 2 +- drivers/media/dvb-core/dvb_net.c | 2 +- drivers/media/dvb-core/dvbdev.c | 146 +++++++++++++++++++++++++---- drivers/media/dvb-core/dvbdev.h | 9 +- drivers/media/firewire/firedtv-ci.c | 2 +- drivers/media/pci/bt8xx/dst_ca.c | 3 +- drivers/media/pci/ddbridge/ddbridge-core.c | 2 +- drivers/media/pci/ngene/ngene-core.c | 2 +- drivers/media/pci/ttpci/av7110.c | 2 +- drivers/media/pci/ttpci/av7110_av.c | 4 +- drivers/media/pci/ttpci/av7110_ca.c | 2 +- 13 files changed, 148 insertions(+), 34 deletions(-) diff --git a/drivers/media/dvb-core/dmxdev.c b/drivers/media/dvb-core/dmxdev.c index ea9abde902e9eb..a168cbe1c99858 100644 --- a/drivers/media/dvb-core/dmxdev.c +++ b/drivers/media/dvb-core/dmxdev.c @@ -1244,9 +1244,9 @@ int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *dvb_adapter) } dvb_register_device(dvb_adapter, &dmxdev->dvbdev, &dvbdev_demux, dmxdev, - DVB_DEVICE_DEMUX); + DVB_DEVICE_DEMUX, dmxdev->filternum); dvb_register_device(dvb_adapter, &dmxdev->dvr_dvbdev, &dvbdev_dvr, - dmxdev, DVB_DEVICE_DVR); + dmxdev, DVB_DEVICE_DVR, dmxdev->filternum); dvb_ringbuffer_init(&dmxdev->dvr_buffer, NULL, 8192); diff --git a/drivers/media/dvb-core/dvb_ca_en50221.c b/drivers/media/dvb-core/dvb_ca_en50221.c index fb66184dc9b665..f82cd1ff4f3a01 100644 --- a/drivers/media/dvb-core/dvb_ca_en50221.c +++ b/drivers/media/dvb-core/dvb_ca_en50221.c @@ -1695,7 +1695,7 @@ int dvb_ca_en50221_init(struct dvb_adapter *dvb_adapter, pubca->private = ca; /* register the DVB device */ - ret = dvb_register_device(dvb_adapter, &ca->dvbdev, &dvbdev_ca, ca, DVB_DEVICE_CA); + ret = dvb_register_device(dvb_adapter, &ca->dvbdev, &dvbdev_ca, ca, DVB_DEVICE_CA, 0); if (ret) goto free_slot_info; diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c index 42ab6aaeed7d11..40080645341e72 100644 --- a/drivers/media/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb-core/dvb_frontend.c @@ -2759,7 +2759,7 @@ int dvb_register_frontend(struct dvb_adapter* dvb, fe->dvb->num, fe->id, fe->ops.info.name); dvb_register_device (fe->dvb, &fepriv->dvbdev, &dvbdev_template, - fe, DVB_DEVICE_FRONTEND); + fe, DVB_DEVICE_FRONTEND, 0); /* * Initialize the cache to the proper values according with the diff --git a/drivers/media/dvb-core/dvb_net.c b/drivers/media/dvb-core/dvb_net.c index ce4332e80a910f..ce6a711b42d492 100644 --- a/drivers/media/dvb-core/dvb_net.c +++ b/drivers/media/dvb-core/dvb_net.c @@ -1502,6 +1502,6 @@ int dvb_net_init (struct dvb_adapter *adap, struct dvb_net *dvbnet, dvbnet->state[i] = 0; return dvb_register_device(adap, &dvbnet->dvbdev, &dvbdev_net, - dvbnet, DVB_DEVICE_NET); + dvbnet, DVB_DEVICE_NET, 0); } EXPORT_SYMBOL(dvb_net_init); diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index dadcf165507054..6babc688801bbe 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -180,18 +180,86 @@ skip: return -ENFILE; } +static void dvb_create_tsout_entity(struct dvb_device *dvbdev, + const char *name, int npads) +{ +#if defined(CONFIG_MEDIA_CONTROLLER_DVB) + int i, ret = 0; + + dvbdev->tsout_pads = kcalloc(npads, sizeof(*dvbdev->tsout_pads), + GFP_KERNEL); + if (!dvbdev->tsout_pads) + return; + dvbdev->tsout_entity = kcalloc(npads, sizeof(*dvbdev->tsout_entity), + GFP_KERNEL); + if (!dvbdev->tsout_entity) { + kfree(dvbdev->tsout_pads); + dvbdev->tsout_pads = NULL; + return; + } + for (i = 0; i < npads; i++) { + struct media_pad *pads = &dvbdev->tsout_pads[i]; + struct media_entity *entity = &dvbdev->tsout_entity[i]; + + entity->name = kasprintf(GFP_KERNEL, "%s #%d", name, i); + if (!entity->name) { + ret = -ENOMEM; + break; + } + + entity->type = MEDIA_ENT_T_DVB_TSOUT; + pads->flags = MEDIA_PAD_FL_SINK; + + ret = media_entity_init(entity, 1, pads); + if (ret < 0) + break; + + ret = media_device_register_entity(dvbdev->adapter->mdev, + entity); + if (ret < 0) + break; + } + + if (!ret) { + dvbdev->tsout_num_entities = npads; + return; + } + + for (i--; i >= 0; i--) { + media_device_unregister_entity(&dvbdev->tsout_entity[i]); + kfree(dvbdev->tsout_entity[i].name); + } + + printk(KERN_ERR + "%s: media_device_register_entity failed for %s\n", + __func__, name); + + kfree(dvbdev->tsout_entity); + kfree(dvbdev->tsout_pads); + dvbdev->tsout_entity = NULL; + dvbdev->tsout_pads = NULL; +#endif +} + +#define DEMUX_TSOUT "demux-tsout" +#define DVR_TSOUT "dvr-tsout" + static void dvb_create_media_entity(struct dvb_device *dvbdev, - int type, int minor) + int type, int demux_sink_pads) { #if defined(CONFIG_MEDIA_CONTROLLER_DVB) - int ret = 0, npads; + int i, ret = 0, npads; switch (type) { case DVB_DEVICE_FRONTEND: npads = 2; break; + case DVB_DEVICE_DVR: + dvb_create_tsout_entity(dvbdev, DVR_TSOUT, demux_sink_pads); + return; case DVB_DEVICE_DEMUX: - npads = 2; + npads = 1 + demux_sink_pads; + dvb_create_tsout_entity(dvbdev, DEMUX_TSOUT, demux_sink_pads); break; case DVB_DEVICE_CA: npads = 2; @@ -215,8 +283,6 @@ static void dvb_create_media_entity(struct dvb_device *dvbdev, if (!dvbdev->entity) return; - dvbdev->entity->info.dev.major = DVB_MAJOR; - dvbdev->entity->info.dev.minor = minor; dvbdev->entity->name = dvbdev->name; if (npads) { @@ -237,7 +303,8 @@ static void dvb_create_media_entity(struct dvb_device *dvbdev, case DVB_DEVICE_DEMUX: dvbdev->entity->type = MEDIA_ENT_T_DVB_DEMUX; dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK; - dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE; + for (i = 1; i < npads; i++) + dvbdev->pads[i].flags = MEDIA_PAD_FL_SOURCE; break; case DVB_DEVICE_CA: dvbdev->entity->type = MEDIA_ENT_T_DVB_CA; @@ -259,8 +326,16 @@ static void dvb_create_media_entity(struct dvb_device *dvbdev, printk(KERN_ERR "%s: media_device_register_entity failed for %s\n", __func__, dvbdev->entity->name); + + media_device_unregister_entity(dvbdev->entity); + for (i = 0; i < dvbdev->tsout_num_entities; i++) { + media_device_unregister_entity(&dvbdev->tsout_entity[i]); + kfree(dvbdev->tsout_entity[i].name); + } kfree(dvbdev->pads); kfree(dvbdev->entity); + kfree(dvbdev->tsout_pads); + kfree(dvbdev->tsout_entity); dvbdev->entity = NULL; return; } @@ -271,7 +346,8 @@ static void dvb_create_media_entity(struct dvb_device *dvbdev, } static void dvb_register_media_device(struct dvb_device *dvbdev, - int type, int minor) + int type, int minor, + unsigned demux_sink_pads) { #if defined(CONFIG_MEDIA_CONTROLLER_DVB) u32 intf_type; @@ -279,7 +355,7 @@ static void dvb_register_media_device(struct dvb_device *dvbdev, if (!dvbdev->adapter->mdev) return; - dvb_create_media_entity(dvbdev, type, minor); + dvb_create_media_entity(dvbdev, type, demux_sink_pads); switch (type) { case DVB_DEVICE_FRONTEND: @@ -323,7 +399,8 @@ static void dvb_register_media_device(struct dvb_device *dvbdev, } int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev, - const struct dvb_device *template, void *priv, int type) + const struct dvb_device *template, void *priv, int type, + int demux_sink_pads) { struct dvb_device *dvbdev; struct file_operations *dvbdevfops; @@ -402,7 +479,7 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev, dprintk(KERN_DEBUG "DVB: register adapter%d/%s%d @ minor: %i (0x%02x)\n", adap->num, dnames[type], id, minor, minor); - dvb_register_media_device(dvbdev, type, minor); + dvb_register_media_device(dvbdev, type, minor, demux_sink_pads); return 0; } @@ -422,9 +499,18 @@ void dvb_unregister_device(struct dvb_device *dvbdev) #if defined(CONFIG_MEDIA_CONTROLLER_DVB) if (dvbdev->entity) { + int i; + media_device_unregister_entity(dvbdev->entity); + for (i = 0; i < dvbdev->tsout_num_entities; i++) { + media_device_unregister_entity(&dvbdev->tsout_entity[i]); + kfree(dvbdev->tsout_entity[i].name); + } + kfree(dvbdev->entity); kfree(dvbdev->pads); + kfree(dvbdev->tsout_entity); + kfree(dvbdev->tsout_pads); } #endif @@ -440,8 +526,10 @@ void dvb_create_media_graph(struct dvb_adapter *adap) { struct media_device *mdev = adap->mdev; struct media_entity *entity, *tuner = NULL, *demod = NULL; - struct media_entity *demux = NULL, *dvr = NULL, *ca = NULL; + struct media_entity *demux = NULL, *ca = NULL; struct media_interface *intf; + unsigned demux_pad = 0; + unsigned dvr_pad = 0; if (!mdev) return; @@ -457,9 +545,6 @@ void dvb_create_media_graph(struct dvb_adapter *adap) case MEDIA_ENT_T_DVB_DEMUX: demux = entity; break; - case MEDIA_ENT_T_DVB_TSOUT: - dvr = entity; - break; case MEDIA_ENT_T_DVB_CA: ca = entity; break; @@ -471,21 +556,46 @@ void dvb_create_media_graph(struct dvb_adapter *adap) if (demod && demux) media_create_pad_link(demod, 1, demux, 0, MEDIA_LNK_FL_ENABLED); - - if (demux && dvr) - media_create_pad_link(demux, 1, dvr, 0, MEDIA_LNK_FL_ENABLED); - if (demux && ca) media_create_pad_link(demux, 1, ca, 0, MEDIA_LNK_FL_ENABLED); + /* Create demux links for each ringbuffer/pad */ + if (demux) { + media_device_for_each_entity(entity, mdev) { + if (entity->type == MEDIA_ENT_T_DVB_TSOUT) { + if (!strncmp(entity->name, DVR_TSOUT, + strlen(DVR_TSOUT))) + media_create_pad_link(demux, + ++dvr_pad, + entity, 0, 0); + if (!strncmp(entity->name, DEMUX_TSOUT, + strlen(DEMUX_TSOUT))) + media_create_pad_link(demux, + ++demux_pad, + entity, 0, 0); + } + } + } + /* Create indirect interface links for FE->tuner, DVR->demux and CA->ca */ list_for_each_entry(intf, &mdev->interfaces, list) { if (intf->type == MEDIA_INTF_T_DVB_CA && ca) media_create_intf_link(ca, intf, 0); if (intf->type == MEDIA_INTF_T_DVB_FE && tuner) media_create_intf_link(tuner, intf, 0); + if (intf->type == MEDIA_INTF_T_DVB_DVR && demux) media_create_intf_link(demux, intf, 0); + + media_device_for_each_entity(entity, mdev) { + if (entity->type == MEDIA_ENT_T_DVB_TSOUT) { + if (!strcmp(entity->name, DVR_TSOUT)) + media_create_intf_link(entity, intf, 0); + if (!strcmp(entity->name, DEMUX_TSOUT)) + media_create_intf_link(entity, intf, 0); + break; + } + } } } EXPORT_SYMBOL_GPL(dvb_create_media_graph); diff --git a/drivers/media/dvb-core/dvbdev.h b/drivers/media/dvb-core/dvbdev.h index 8398c8fb02b033..7af8adbb589b88 100644 --- a/drivers/media/dvb-core/dvbdev.h +++ b/drivers/media/dvb-core/dvbdev.h @@ -148,9 +148,11 @@ struct dvb_device { const char *name; /* Allocated and filled inside dvbdev.c */ - struct media_entity *entity; struct media_intf_devnode *intf_devnode; - struct media_pad *pads; + + unsigned tsout_num_entities; + struct media_entity *entity, *tsout_entity; + struct media_pad *pads, *tsout_pads; #endif void *priv; @@ -193,7 +195,8 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev, const struct dvb_device *template, void *priv, - int type); + int type, + int demux_sink_pads); /** * dvb_unregister_device - Unregisters a DVB device diff --git a/drivers/media/firewire/firedtv-ci.c b/drivers/media/firewire/firedtv-ci.c index e63f582378bfff..edbb30fdd9d95e 100644 --- a/drivers/media/firewire/firedtv-ci.c +++ b/drivers/media/firewire/firedtv-ci.c @@ -241,7 +241,7 @@ int fdtv_ca_register(struct firedtv *fdtv) return -EFAULT; err = dvb_register_device(&fdtv->adapter, &fdtv->cadev, - &fdtv_ca, fdtv, DVB_DEVICE_CA); + &fdtv_ca, fdtv, DVB_DEVICE_CA, 0); if (stat.ca_application_info == 0) dev_err(fdtv->device, "CaApplicationInfo is not set\n"); diff --git a/drivers/media/pci/bt8xx/dst_ca.c b/drivers/media/pci/bt8xx/dst_ca.c index c5cc14ef8347cb..da8b414fd824ca 100644 --- a/drivers/media/pci/bt8xx/dst_ca.c +++ b/drivers/media/pci/bt8xx/dst_ca.c @@ -705,7 +705,8 @@ struct dvb_device *dst_ca_attach(struct dst_state *dst, struct dvb_adapter *dvb_ struct dvb_device *dvbdev; dprintk(verbose, DST_CA_ERROR, 1, "registering DST-CA device"); - if (dvb_register_device(dvb_adapter, &dvbdev, &dvbdev_ca, dst, DVB_DEVICE_CA) == 0) { + if (dvb_register_device(dvb_adapter, &dvbdev, &dvbdev_ca, dst, + DVB_DEVICE_CA, 0) == 0) { dst->dst_ca = dvbdev; return dst->dst_ca; } diff --git a/drivers/media/pci/ddbridge/ddbridge-core.c b/drivers/media/pci/ddbridge/ddbridge-core.c index fba5b40a869c50..9d5b314142f1b4 100644 --- a/drivers/media/pci/ddbridge/ddbridge-core.c +++ b/drivers/media/pci/ddbridge/ddbridge-core.c @@ -1065,7 +1065,7 @@ static int ddb_ci_attach(struct ddb_port *port) port->en, 0, 1); ret = dvb_register_device(&port->output->adap, &port->output->dev, &dvbdev_ci, (void *) port->output, - DVB_DEVICE_SEC); + DVB_DEVICE_SEC, 0); return ret; } diff --git a/drivers/media/pci/ngene/ngene-core.c b/drivers/media/pci/ngene/ngene-core.c index 1b92d836a564fd..4e924e2d1638fe 100644 --- a/drivers/media/pci/ngene/ngene-core.c +++ b/drivers/media/pci/ngene/ngene-core.c @@ -1513,7 +1513,7 @@ static int init_channel(struct ngene_channel *chan) set_transfer(&chan->dev->channel[2], 1); dvb_register_device(adapter, &chan->ci_dev, &ngene_dvbdev_ci, (void *) chan, - DVB_DEVICE_SEC); + DVB_DEVICE_SEC, 0); if (!chan->ci_dev) goto err; } diff --git a/drivers/media/pci/ttpci/av7110.c b/drivers/media/pci/ttpci/av7110.c index 5e18b6796ed949..a69dc6a0752bb9 100644 --- a/drivers/media/pci/ttpci/av7110.c +++ b/drivers/media/pci/ttpci/av7110.c @@ -1358,7 +1358,7 @@ static int av7110_register(struct av7110 *av7110) #ifdef CONFIG_DVB_AV7110_OSD dvb_register_device(&av7110->dvb_adapter, &av7110->osd_dev, - &dvbdev_osd, av7110, DVB_DEVICE_OSD); + &dvbdev_osd, av7110, DVB_DEVICE_OSD, 0); #endif dvb_net_init(&av7110->dvb_adapter, &av7110->dvb_net, &dvbdemux->dmx); diff --git a/drivers/media/pci/ttpci/av7110_av.c b/drivers/media/pci/ttpci/av7110_av.c index 6fc748e2201736..26c5696c193bf2 100644 --- a/drivers/media/pci/ttpci/av7110_av.c +++ b/drivers/media/pci/ttpci/av7110_av.c @@ -1594,10 +1594,10 @@ int av7110_av_register(struct av7110 *av7110) memset(&av7110->video_size, 0, sizeof (video_size_t)); dvb_register_device(&av7110->dvb_adapter, &av7110->video_dev, - &dvbdev_video, av7110, DVB_DEVICE_VIDEO); + &dvbdev_video, av7110, DVB_DEVICE_VIDEO, 0); dvb_register_device(&av7110->dvb_adapter, &av7110->audio_dev, - &dvbdev_audio, av7110, DVB_DEVICE_AUDIO); + &dvbdev_audio, av7110, DVB_DEVICE_AUDIO, 0); return 0; } diff --git a/drivers/media/pci/ttpci/av7110_ca.c b/drivers/media/pci/ttpci/av7110_ca.c index bc4c65ffd4b987..96a130fb459572 100644 --- a/drivers/media/pci/ttpci/av7110_ca.c +++ b/drivers/media/pci/ttpci/av7110_ca.c @@ -378,7 +378,7 @@ static struct dvb_device dvbdev_ca = { int av7110_ca_register(struct av7110 *av7110) { return dvb_register_device(&av7110->dvb_adapter, &av7110->ca_dev, - &dvbdev_ca, av7110, DVB_DEVICE_CA); + &dvbdev_ca, av7110, DVB_DEVICE_CA, 0); } void av7110_ca_unregister(struct av7110 *av7110) -- cgit 1.2.3-korg From 6c24d4602ebee64128f29944d776c19d4d53fb54 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 21 Aug 2015 18:26:42 -0300 Subject: [media] media: report if a pad is sink or source at debug msg Sometimes, it is important to see if the created pad is sink or source. Add info to track that. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 8449274bb50c97..5697735be433e1 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -109,8 +109,11 @@ static void dev_dbg_obj(const char *event_name, struct media_gobj *gobj) struct media_pad *pad = gobj_to_pad(gobj); dev_dbg(gobj->mdev->dev, - "%s: id 0x%08x pad#%d: '%s':%d\n", - event_name, gobj->id, media_localid(gobj), + "%s: id 0x%08x %s%spad#%d: '%s':%d\n", + event_name, gobj->id, + pad->flags & MEDIA_PAD_FL_SINK ? " sink " : "", + pad->flags & MEDIA_PAD_FL_SOURCE ? "source " : "", + media_localid(gobj), pad->entity->name, pad->index); break; } -- cgit 1.2.3-korg From c398bb6441949bd1f2acf5072116ecba143df03b Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sun, 23 Aug 2015 08:28:21 -0300 Subject: [media] uapi/media.h: Add MEDIA_IOC_G_TOPOLOGY ioctl Add a new ioctl that will report the entire topology on one go. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/media/media-entity.h | 2 + include/uapi/linux/media.h | 88 +++++++++++++++++++++++++++++++++++++++++++- 2 files changed, 89 insertions(+), 1 deletion(-) diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 5171e3c1c71a58..dbc4da450fc203 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -181,6 +181,8 @@ struct media_interface { */ struct media_intf_devnode { struct media_interface intf; + + /* Should match the fields at media_v2_intf_devnode */ u32 major; u32 minor; }; diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h index 3c4080106df8bf..72ac39de382254 100644 --- a/include/uapi/linux/media.h +++ b/include/uapi/linux/media.h @@ -206,6 +206,10 @@ struct media_pad_desc { #define MEDIA_LNK_FL_IMMUTABLE (1 << 1) #define MEDIA_LNK_FL_DYNAMIC (1 << 2) +#define MEDIA_LNK_FL_LINK_TYPE (0xf << 28) +# define MEDIA_LNK_FL_DATA_LINK (0 << 28) +# define MEDIA_LNK_FL_INTERFACE_LINK (1 << 28) + struct media_link_desc { struct media_pad_desc source; struct media_pad_desc sink; @@ -241,11 +245,93 @@ struct media_links_enum { #define MEDIA_INTF_T_V4L_SUBDEV (MEDIA_INTF_T_V4L_BASE + 3) #define MEDIA_INTF_T_V4L_SWRADIO (MEDIA_INTF_T_V4L_BASE + 4) -/* TBD: declare the structs needed for the new G_TOPOLOGY ioctl */ +/* + * MC next gen API definitions + * + * NOTE: The declarations below are close to the MC RFC for the Media + * Controller, the next generation. Yet, there are a few adjustments + * to do, as we want to be able to have a functional API before + * the MC properties change. Those will be properly marked below. + * Please also notice that I removed "num_pads", "num_links", + * from the proposal, as a proper userspace application will likely + * use lists for pads/links, just as we intend to do in Kernelspace. + * The API definition should be freed from fields that are bound to + * some specific data structure. + * + * FIXME: Currently, I opted to name the new types as "media_v2", as this + * won't cause any conflict with the Kernelspace namespace, nor with + * the previous kAPI media_*_desc namespace. This can be changed + * later, before the adding this API upstream. + */ + + +struct media_v2_entity { + __u32 id; + char name[64]; /* FIXME: move to a property? (RFC says so) */ + __u16 reserved[14]; +}; + +/* Should match the specific fields at media_intf_devnode */ +struct media_v2_intf_devnode { + __u32 major; + __u32 minor; +}; + +struct media_v2_interface { + __u32 id; + __u32 intf_type; + __u32 flags; + __u32 reserved[9]; + + union { + struct media_v2_intf_devnode devnode; + __u32 raw[16]; + }; +}; + +struct media_v2_pad { + __u32 id; + __u32 entity_id; + __u32 flags; + __u16 reserved[9]; +}; + +struct media_v2_link { + __u32 id; + __u32 source_id; + __u32 sink_id; + __u32 flags; + __u32 reserved[5]; +}; + +struct media_v2_topology { + __u32 topology_version; + + __u32 num_entities; + struct media_v2_entity *entities; + + __u32 num_interfaces; + struct media_v2_interface *interfaces; + + __u32 num_pads; + struct media_v2_pad *pads; + + __u32 num_links; + struct media_v2_link *links; + + struct { + __u32 reserved_num; + void *reserved_ptr; + } reserved_types[16]; + __u32 reserved[8]; +}; + +/* ioctls */ #define MEDIA_IOC_DEVICE_INFO _IOWR('|', 0x00, struct media_device_info) #define MEDIA_IOC_ENUM_ENTITIES _IOWR('|', 0x01, struct media_entity_desc) #define MEDIA_IOC_ENUM_LINKS _IOWR('|', 0x02, struct media_links_enum) #define MEDIA_IOC_SETUP_LINK _IOWR('|', 0x03, struct media_link_desc) +#define MEDIA_IOC_G_TOPOLOGY _IOWR('|', 0x04, struct media_v2_topology) #endif /* __LINUX_MEDIA_H */ -- cgit 1.2.3-korg From cf975a4b40ec9a947dae614b23128f3984a2d324 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sun, 23 Aug 2015 07:51:22 -0300 Subject: [media] media: Use a macro to interate between all interfaces Just like we do with entities, use a similar macro for the interfaces loop. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-core/dvbdev.c | 3 ++- include/media/media-device.h | 5 +++++ 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index 6babc688801bbe..f00f1a5f279cfa 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -578,9 +578,10 @@ void dvb_create_media_graph(struct dvb_adapter *adap) } /* Create indirect interface links for FE->tuner, DVR->demux and CA->ca */ - list_for_each_entry(intf, &mdev->interfaces, list) { + media_device_for_each_intf(intf, mdev) { if (intf->type == MEDIA_INTF_T_DVB_CA && ca) media_create_intf_link(ca, intf, 0); + if (intf->type == MEDIA_INTF_T_DVB_FE && tuner) media_create_intf_link(tuner, intf, 0); diff --git a/include/media/media-device.h b/include/media/media-device.h index 51807efa505b5b..f23d686aaac60b 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -113,6 +113,11 @@ struct media_device *media_device_find_devres(struct device *dev); #define media_device_for_each_entity(entity, mdev) \ list_for_each_entry(entity, &(mdev)->entities, list) +/* Iterate over all interfaces. */ +#define media_device_for_each_intf(intf, mdev) \ + list_for_each_entry(intf, &(mdev)->interfaces, list) + + #else static inline int media_device_register(struct media_device *mdev) { -- cgit 1.2.3-korg From 05bfa9fa1cda91953e1b5975b059542b83c5245c Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sun, 23 Aug 2015 07:51:33 -0300 Subject: [media] media: move mdev list init to gobj Let's control the topology changes inside the graph_object. So, move the addition and removal of interfaces/entities from the mdev lists to media_gobj_init() and media_gobj_remove(). The main reason is that mdev should have lists for all object types, as the new MC api will require to store objects in separate places. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 4 +--- drivers/media/media-entity.c | 15 ++++++++++++--- include/media/media-device.h | 4 ++-- include/media/media-entity.h | 3 +-- 4 files changed, 16 insertions(+), 10 deletions(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 134fe751019506..ec98595b8a7ad5 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -415,7 +415,7 @@ void media_device_unregister(struct media_device *mdev) struct media_entity *entity; struct media_entity *next; - list_for_each_entry_safe(entity, next, &mdev->entities, list) + list_for_each_entry_safe(entity, next, &mdev->entities, graph_obj.list) media_device_unregister_entity(entity); device_remove_file(&mdev->devnode.dev, &dev_attr_model); @@ -449,7 +449,6 @@ int __must_check media_device_register_entity(struct media_device *mdev, spin_lock(&mdev->lock); /* Initialize media_gobj embedded at the entity */ media_gobj_init(mdev, MEDIA_GRAPH_ENTITY, &entity->graph_obj); - list_add_tail(&entity->list, &mdev->entities); /* Initialize objects at the pads */ for (i = 0; i < entity->num_pads; i++) @@ -487,7 +486,6 @@ void media_device_unregister_entity(struct media_entity *entity) for (i = 0; i < entity->num_pads; i++) media_gobj_remove(&entity->pads[i].graph_obj); media_gobj_remove(&entity->graph_obj); - list_del(&entity->list); spin_unlock(&mdev->lock); entity->graph_obj.mdev = NULL; } diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 5697735be433e1..b3875b0185c1ee 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -158,6 +158,7 @@ void media_gobj_init(struct media_device *mdev, switch (type) { case MEDIA_GRAPH_ENTITY: gobj->id = media_gobj_gen_id(type, ++mdev->entity_id); + list_add_tail(&gobj->list, &mdev->entities); break; case MEDIA_GRAPH_PAD: gobj->id = media_gobj_gen_id(type, ++mdev->pad_id); @@ -166,6 +167,7 @@ void media_gobj_init(struct media_device *mdev, gobj->id = media_gobj_gen_id(type, ++mdev->link_id); break; case MEDIA_GRAPH_INTF_DEVNODE: + list_add_tail(&gobj->list, &mdev->interfaces); gobj->id = media_gobj_gen_id(type, ++mdev->intf_devnode_id); break; } @@ -181,6 +183,16 @@ void media_gobj_init(struct media_device *mdev, */ void media_gobj_remove(struct media_gobj *gobj) { + /* Remove the object from mdev list */ + switch (media_type(gobj)) { + case MEDIA_GRAPH_ENTITY: + case MEDIA_GRAPH_INTF_DEVNODE: + list_del(&gobj->list); + break; + default: + break; + } + dev_dbg_obj(__func__, gobj); } @@ -852,8 +864,6 @@ static void media_interface_init(struct media_device *mdev, INIT_LIST_HEAD(&intf->links); media_gobj_init(mdev, gobj_type, &intf->graph_obj); - - list_add_tail(&intf->list, &mdev->interfaces); } /* Functions related to the media interface via device nodes */ @@ -882,7 +892,6 @@ EXPORT_SYMBOL_GPL(media_devnode_create); void media_devnode_remove(struct media_intf_devnode *devnode) { media_gobj_remove(&devnode->intf.graph_obj); - list_del(&devnode->intf.list); kfree(devnode); } EXPORT_SYMBOL_GPL(media_devnode_remove); diff --git a/include/media/media-device.h b/include/media/media-device.h index f23d686aaac60b..85fa302047bd42 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -111,11 +111,11 @@ struct media_device *media_device_find_devres(struct device *dev); /* Iterate over all entities. */ #define media_device_for_each_entity(entity, mdev) \ - list_for_each_entry(entity, &(mdev)->entities, list) + list_for_each_entry(entity, &(mdev)->entities, graph_obj.list) /* Iterate over all interfaces. */ #define media_device_for_each_intf(intf, mdev) \ - list_for_each_entry(intf, &(mdev)->interfaces, list) + list_for_each_entry(intf, &(mdev)->interfaces, graph_obj.list) #else diff --git a/include/media/media-entity.h b/include/media/media-entity.h index dbc4da450fc203..f9058601440a2e 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -66,6 +66,7 @@ enum media_gobj_type { struct media_gobj { struct media_device *mdev; u32 id; + struct list_head list; }; @@ -114,7 +115,6 @@ struct media_entity_operations { struct media_entity { struct media_gobj graph_obj; /* must be first field in struct */ - struct list_head list; const char *name; /* Entity name */ u32 type; /* Entity type (MEDIA_ENT_T_*) */ u32 revision; /* Entity revision, driver specific */ @@ -166,7 +166,6 @@ struct media_entity { */ struct media_interface { struct media_gobj graph_obj; - struct list_head list; struct list_head links; u32 type; u32 flags; -- cgit 1.2.3-korg From 9155d859b6bec29cdbbd80a509be35de55115f00 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sun, 23 Aug 2015 08:00:33 -0300 Subject: [media] media-device: add pads and links to media_device The MC next gen API sends objects to userspace grouped by their types. In the case of pads and links, in order to improve performance and have a simpler code, the best is to store them also on separate linked lists at MC. If we don't do that, we would need this kind of interaction to send data to userspace (code is in structured english): for each entity: for each pad: store pads for each entity: for each link: store link for each interface: for each link: store link With would require one nested loop for pads and two nested loops for links. By using separate linked lists for them, just one loop would be enough. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 2 ++ drivers/media/media-entity.c | 17 ++++++----------- include/media/media-device.h | 12 ++++++++++++ 3 files changed, 20 insertions(+), 11 deletions(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index ec98595b8a7ad5..5b2c9f7fcd4590 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -382,6 +382,8 @@ int __must_check __media_device_register(struct media_device *mdev, INIT_LIST_HEAD(&mdev->entities); INIT_LIST_HEAD(&mdev->interfaces); + INIT_LIST_HEAD(&mdev->pads); + INIT_LIST_HEAD(&mdev->links); spin_lock_init(&mdev->lock); mutex_init(&mdev->graph_mutex); diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index b3875b0185c1ee..2f3d3aae20a724 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -162,13 +162,15 @@ void media_gobj_init(struct media_device *mdev, break; case MEDIA_GRAPH_PAD: gobj->id = media_gobj_gen_id(type, ++mdev->pad_id); + list_add_tail(&gobj->list, &mdev->pads); break; case MEDIA_GRAPH_LINK: gobj->id = media_gobj_gen_id(type, ++mdev->link_id); + list_add_tail(&gobj->list, &mdev->links); break; case MEDIA_GRAPH_INTF_DEVNODE: - list_add_tail(&gobj->list, &mdev->interfaces); gobj->id = media_gobj_gen_id(type, ++mdev->intf_devnode_id); + list_add_tail(&gobj->list, &mdev->interfaces); break; } dev_dbg_obj(__func__, gobj); @@ -183,17 +185,10 @@ void media_gobj_init(struct media_device *mdev, */ void media_gobj_remove(struct media_gobj *gobj) { - /* Remove the object from mdev list */ - switch (media_type(gobj)) { - case MEDIA_GRAPH_ENTITY: - case MEDIA_GRAPH_INTF_DEVNODE: - list_del(&gobj->list); - break; - default: - break; - } - dev_dbg_obj(__func__, gobj); + + /* Remove the object from mdev list */ + list_del(&gobj->list); } /** diff --git a/include/media/media-device.h b/include/media/media-device.h index 85fa302047bd42..0d1b9c68745446 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -47,6 +47,8 @@ struct device; * @intf_devnode_id: Unique ID used on the last interface devnode registered * @entities: List of registered entities * @interfaces: List of registered interfaces + * @pads: List of registered pads + * @links: List of registered links * @lock: Entities list lock * @graph_mutex: Entities graph operation lock * @link_notify: Link state change notification callback @@ -79,6 +81,8 @@ struct media_device { struct list_head entities; struct list_head interfaces; + struct list_head pads; + struct list_head links; /* Protects the entities list */ spinlock_t lock; @@ -117,6 +121,14 @@ struct media_device *media_device_find_devres(struct device *dev); #define media_device_for_each_intf(intf, mdev) \ list_for_each_entry(intf, &(mdev)->interfaces, graph_obj.list) +/* Iterate over all pads. */ +#define media_device_for_each_pad(pad, mdev) \ + list_for_each_entry(pad, &(mdev)->pads, graph_obj.list) + +/* Iterate over all links. */ +#define media_device_for_each_link(link, mdev) \ + list_for_each_entry(link, &(mdev)->links, graph_obj.list) + #else static inline int media_device_register(struct media_device *mdev) -- cgit 1.2.3-korg From 2521fdac28d0ceea659be1620fef96b1cbff09b6 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sun, 23 Aug 2015 09:40:26 -0300 Subject: [media] media_device: add a topology version field Every time a graph object is added or removed, the version of the topology changes. That's a requirement for the new MEDIA_IOC_G_TOPOLOGY, in order to allow userspace to know that the topology has changed after a previous call to it. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 5 +++++ include/media/media-device.h | 4 ++++ 2 files changed, 9 insertions(+) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 2f3d3aae20a724..1b2fd724cdbfa2 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -173,6 +173,9 @@ void media_gobj_init(struct media_device *mdev, list_add_tail(&gobj->list, &mdev->interfaces); break; } + + mdev->topology_version++; + dev_dbg_obj(__func__, gobj); } @@ -187,6 +190,8 @@ void media_gobj_remove(struct media_gobj *gobj) { dev_dbg_obj(__func__, gobj); + gobj->mdev->topology_version++; + /* Remove the object from mdev list */ list_del(&gobj->list); } diff --git a/include/media/media-device.h b/include/media/media-device.h index 0d1b9c68745446..1b12774a9ab42c 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -41,6 +41,8 @@ struct device; * @bus_info: Unique and stable device location identifier * @hw_revision: Hardware device revision * @driver_version: Device driver version + * @topology_version: Monotonic counter for storing the version of the graph + * topology. Should be incremented each time the topology changes. * @entity_id: Unique ID used on the last entity registered * @pad_id: Unique ID used on the last pad registered * @link_id: Unique ID used on the last link registered @@ -74,6 +76,8 @@ struct media_device { u32 hw_revision; u32 driver_version; + u32 topology_version; + u32 entity_id; u32 pad_id; u32 link_id; -- cgit 1.2.3-korg From 8309f47c32c04aae30698389073ec8c6d1b7e986 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sun, 23 Aug 2015 10:36:41 -0300 Subject: [media] media-device: add support for MEDIA_IOC_G_TOPOLOGY ioctl Add support for the new MEDIA_IOC_G_TOPOLOGY ioctl, according with the RFC for the MC next generation. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 158 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 158 insertions(+) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 5b2c9f7fcd4590..96a476eeb16ecb 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -232,6 +232,156 @@ static long media_device_setup_link(struct media_device *mdev, return ret; } +static long __media_device_get_topology(struct media_device *mdev, + struct media_v2_topology *topo) +{ + struct media_entity *entity; + struct media_interface *intf; + struct media_pad *pad; + struct media_link *link; + struct media_v2_entity uentity; + struct media_v2_interface uintf; + struct media_v2_pad upad; + struct media_v2_link ulink; + int ret = 0, i; + + topo->topology_version = mdev->topology_version; + + /* Get entities and number of entities */ + i = 0; + media_device_for_each_entity(entity, mdev) { + i++; + + if (ret || !topo->entities) + continue; + + if (i > topo->num_entities) { + ret = -ENOSPC; + continue; + } + + /* Copy fields to userspace struct if not error */ + memset(&uentity, 0, sizeof(uentity)); + uentity.id = entity->graph_obj.id; + strncpy(uentity.name, entity->name, + sizeof(uentity.name)); + + if (copy_to_user(&topo->entities[i - 1], &uentity, sizeof(uentity))) + ret = -EFAULT; + } + topo->num_entities = i; + + /* Get interfaces and number of interfaces */ + i = 0; + media_device_for_each_intf(intf, mdev) { + i++; + + if (ret || !topo->interfaces) + continue; + + if (i > topo->num_interfaces) { + ret = -ENOSPC; + continue; + } + + memset(&uintf, 0, sizeof(uintf)); + + /* Copy intf fields to userspace struct */ + uintf.id = intf->graph_obj.id; + uintf.intf_type = intf->type; + uintf.flags = intf->flags; + + if (media_type(&intf->graph_obj) == MEDIA_GRAPH_INTF_DEVNODE) { + struct media_intf_devnode *devnode; + + devnode = intf_to_devnode(intf); + + uintf.devnode.major = devnode->major; + uintf.devnode.minor = devnode->minor; + } + + if (copy_to_user(&topo->interfaces[i - 1], &uintf, sizeof(uintf))) + ret = -EFAULT; + } + topo->num_interfaces = i; + + /* Get pads and number of pads */ + i = 0; + media_device_for_each_pad(pad, mdev) { + i++; + + if (ret || !topo->pads) + continue; + + if (i > topo->num_pads) { + ret = -ENOSPC; + continue; + } + + memset(&upad, 0, sizeof(upad)); + + /* Copy pad fields to userspace struct */ + upad.id = pad->graph_obj.id; + upad.entity_id = pad->entity->graph_obj.id; + upad.flags = pad->flags; + + if (copy_to_user(&topo->pads[i - 1], &upad, sizeof(upad))) + ret = -EFAULT; + } + topo->num_pads = i; + + /* Get links and number of links */ + i = 0; + media_device_for_each_link(link, mdev) { + i++; + + if (ret || !topo->links) + continue; + + if (i > topo->num_links) { + ret = -ENOSPC; + continue; + } + + memset(&ulink, 0, sizeof(ulink)); + + /* Copy link fields to userspace struct */ + ulink.id = link->graph_obj.id; + ulink.source_id = link->gobj0->id; + ulink.sink_id = link->gobj1->id; + ulink.flags = link->flags; + + if (media_type(link->gobj0) != MEDIA_GRAPH_PAD) + ulink.flags |= MEDIA_LNK_FL_INTERFACE_LINK; + + if (copy_to_user(&topo->links[i - 1], &ulink, sizeof(ulink))) + ret = -EFAULT; + } + topo->num_links = i; + + return ret; +} + +static long media_device_get_topology(struct media_device *mdev, + struct media_v2_topology __user *utopo) +{ + struct media_v2_topology ktopo; + int ret; + + ret = copy_from_user(&ktopo, utopo, sizeof(ktopo)); + + if (ret < 0) + return ret; + + ret = __media_device_get_topology(mdev, &ktopo); + if (ret < 0) + return ret; + + ret = copy_to_user(utopo, &ktopo, sizeof(*utopo)); + + return ret; +} + static long media_device_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { @@ -264,6 +414,13 @@ static long media_device_ioctl(struct file *filp, unsigned int cmd, mutex_unlock(&dev->graph_mutex); break; + case MEDIA_IOC_G_TOPOLOGY: + mutex_lock(&dev->graph_mutex); + ret = media_device_get_topology(dev, + (struct media_v2_topology __user *)arg); + mutex_unlock(&dev->graph_mutex); + break; + default: ret = -ENOIOCTLCMD; } @@ -312,6 +469,7 @@ static long media_device_compat_ioctl(struct file *filp, unsigned int cmd, case MEDIA_IOC_DEVICE_INFO: case MEDIA_IOC_ENUM_ENTITIES: case MEDIA_IOC_SETUP_LINK: + case MEDIA_IOC_G_TOPOLOGY: return media_device_ioctl(filp, cmd, arg); case MEDIA_IOC_ENUM_LINKS32: -- cgit 1.2.3-korg From 7c4696a910d404eda3477e76a35c155a6b83ca3e Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 24 Aug 2015 08:46:46 -0300 Subject: [media] media-entity: unregister entity links Add functions to explicitly unregister all entity links. This function is called automatically when an entity link is destroyed. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 23 +++++++++++++++++++++++ include/media/media-entity.h | 3 +++ 2 files changed, 26 insertions(+) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 1b2fd724cdbfa2..ceae708bdad49e 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -891,6 +891,7 @@ EXPORT_SYMBOL_GPL(media_devnode_create); void media_devnode_remove(struct media_intf_devnode *devnode) { + media_remove_intf_links(&devnode->intf); media_gobj_remove(&devnode->intf.graph_obj); kfree(devnode); } @@ -932,3 +933,25 @@ void media_remove_intf_link(struct media_link *link) mutex_unlock(&link->graph_obj.mdev->graph_mutex); } EXPORT_SYMBOL_GPL(media_remove_intf_link); + +void __media_remove_intf_links(struct media_interface *intf) +{ + struct media_link *link, *tmp; + + list_for_each_entry_safe(link, tmp, &intf->links, list) + __media_remove_intf_link(link); + +} +EXPORT_SYMBOL_GPL(__media_remove_intf_links); + +void media_remove_intf_links(struct media_interface *intf) +{ + /* Do nothing if the intf is not registered. */ + if (intf->graph_obj.mdev == NULL) + return; + + mutex_lock(&intf->graph_obj.mdev->graph_mutex); + __media_remove_intf_links(intf); + mutex_unlock(&intf->graph_obj.mdev->graph_mutex); +} +EXPORT_SYMBOL_GPL(media_remove_intf_links); diff --git a/include/media/media-entity.h b/include/media/media-entity.h index f9058601440a2e..0753f3029d063d 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -326,6 +326,9 @@ struct media_link *media_create_intf_link(struct media_entity *entity, struct media_interface *intf, u32 flags); void media_remove_intf_link(struct media_link *link); +void __media_remove_intf_links(struct media_interface *intf); +void media_remove_intf_links(struct media_interface *intf); + #define media_entity_call(entity, operation, args...) \ (((entity)->ops && (entity)->ops->operation) ? \ -- cgit 1.2.3-korg From a28971ad141bf41b8d6c24f8c4e8736be0c57677 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sat, 29 Aug 2015 19:07:09 -0300 Subject: [media] remove interface links at media_entity_unregister() Interface links connected to an entity should be removed before the entity itself can be removed. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 96a476eeb16ecb..7c37aeab05bbdf 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -638,14 +638,30 @@ void media_device_unregister_entity(struct media_entity *entity) return; spin_lock(&mdev->lock); + + /* Remove interface links with this entity on it */ + list_for_each_entry_safe(link, tmp, &mdev->links, graph_obj.list) { + if (media_type(link->gobj1) == MEDIA_GRAPH_ENTITY + && link->entity == entity) { + media_gobj_remove(&link->graph_obj); + kfree(link); + } + } + + /* Remove all data links that belong to this entity */ list_for_each_entry_safe(link, tmp, &entity->links, list) { media_gobj_remove(&link->graph_obj); list_del(&link->list); kfree(link); } + + /* Remove all pads that belong to this entity */ for (i = 0; i < entity->num_pads; i++) media_gobj_remove(&entity->pads[i].graph_obj); + + /* Remove the entity */ media_gobj_remove(&entity->graph_obj); + spin_unlock(&mdev->lock); entity->graph_obj.mdev = NULL; } -- cgit 1.2.3-korg From d47109fa45ee2dc4e0b2710a8225e6c3ac7ea9fd Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sat, 29 Aug 2015 21:23:44 -0300 Subject: [media] media-device: remove interfaces and interface links Just like what's done with entities, when the media controller is unregistered, release any interface and interface links that might still be there. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 30 +++++++++++++++++++----------- drivers/media/media-entity.c | 6 +++++- include/media/media-entity.h | 1 + 3 files changed, 25 insertions(+), 12 deletions(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 7c37aeab05bbdf..96700843b1e4f0 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -574,6 +574,17 @@ void media_device_unregister(struct media_device *mdev) { struct media_entity *entity; struct media_entity *next; + struct media_interface *intf, *tmp_intf; + + /* Remove all interfaces from the media device */ + spin_lock(&mdev->lock); + list_for_each_entry_safe(intf, tmp_intf, &mdev->interfaces, + graph_obj.list) { + __media_remove_intf_links(intf); + media_gobj_remove(&intf->graph_obj); + kfree(intf); + } + spin_unlock(&mdev->lock); list_for_each_entry_safe(entity, next, &mdev->entities, graph_obj.list) media_device_unregister_entity(entity); @@ -633,27 +644,24 @@ void media_device_unregister_entity(struct media_entity *entity) int i; struct media_device *mdev = entity->graph_obj.mdev; struct media_link *link, *tmp; + struct media_interface *intf; if (mdev == NULL) return; spin_lock(&mdev->lock); - /* Remove interface links with this entity on it */ - list_for_each_entry_safe(link, tmp, &mdev->links, graph_obj.list) { - if (media_type(link->gobj1) == MEDIA_GRAPH_ENTITY - && link->entity == entity) { - media_gobj_remove(&link->graph_obj); - kfree(link); + /* Remove all interface links pointing to this entity */ + list_for_each_entry(intf, &mdev->interfaces, graph_obj.list) { + list_for_each_entry_safe(link, tmp, &intf->links, list) { + if (media_type(link->gobj1) == MEDIA_GRAPH_ENTITY + && link->entity == entity) + __media_remove_intf_link(link); } } /* Remove all data links that belong to this entity */ - list_for_each_entry_safe(link, tmp, &entity->links, list) { - media_gobj_remove(&link->graph_obj); - list_del(&link->list); - kfree(link); - } + __media_entity_remove_links(entity); /* Remove all pads that belong to this entity */ for (i = 0; i < entity->num_pads; i++) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index ceae708bdad49e..ee0f8136496086 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -674,9 +674,11 @@ static void __media_entity_remove_link(struct media_entity *entity, /* Remove the remote link */ list_del(&rlink->list); + media_gobj_remove(&rlink->graph_obj); kfree(rlink); } list_del(&link->list); + media_gobj_remove(&link->graph_obj); kfree(link); } @@ -920,11 +922,13 @@ struct media_link *media_create_intf_link(struct media_entity *entity, EXPORT_SYMBOL_GPL(media_create_intf_link); -static void __media_remove_intf_link(struct media_link *link) +void __media_remove_intf_link(struct media_link *link) { + list_del(&link->list); media_gobj_remove(&link->graph_obj); kfree(link); } +EXPORT_SYMBOL_GPL(__media_remove_intf_link); void media_remove_intf_link(struct media_link *link) { diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 0753f3029d063d..f165d303f03c89 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -325,6 +325,7 @@ void media_devnode_remove(struct media_intf_devnode *devnode); struct media_link *media_create_intf_link(struct media_entity *entity, struct media_interface *intf, u32 flags); +void __media_remove_intf_link(struct media_link *link); void media_remove_intf_link(struct media_link *link); void __media_remove_intf_links(struct media_interface *intf); void media_remove_intf_links(struct media_interface *intf); -- cgit 1.2.3-korg From a08fad1ec80c69c79b3ffb6d84968b0952d32da1 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 9 Dec 2015 19:47:35 -0200 Subject: [media] media-entity: protect object creation/removal using spin lock Some parts of the media controller are using mutexes while others are using spin locks in order to protect creation and removal of elements in the graph. That's wrong! Also, the V4L2 core can remove graph elements on non-interactive context: BUG: sleeping function called from invalid context at include/linux/sched.h:2776 Fix it by always using spin locks for graph element addition/removal, just like entity creation/removal is protected at media-device.c Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 16 ++++++++-------- include/media/media-device.h | 2 +- 2 files changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index ee0f8136496086..b1390d843909ba 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -700,9 +700,9 @@ void media_entity_remove_links(struct media_entity *entity) if (entity->graph_obj.mdev == NULL) return; - mutex_lock(&entity->graph_obj.mdev->graph_mutex); + spin_lock(&entity->graph_obj.mdev->lock); __media_entity_remove_links(entity); - mutex_unlock(&entity->graph_obj.mdev->graph_mutex); + spin_unlock(&entity->graph_obj.mdev->lock); } EXPORT_SYMBOL_GPL(media_entity_remove_links); @@ -792,9 +792,9 @@ int media_entity_setup_link(struct media_link *link, u32 flags) { int ret; - mutex_lock(&link->source->entity->graph_obj.mdev->graph_mutex); + spin_lock(&link->source->entity->graph_obj.mdev->lock); ret = __media_entity_setup_link(link, flags); - mutex_unlock(&link->source->entity->graph_obj.mdev->graph_mutex); + spin_unlock(&link->source->entity->graph_obj.mdev->lock); return ret; } @@ -932,9 +932,9 @@ EXPORT_SYMBOL_GPL(__media_remove_intf_link); void media_remove_intf_link(struct media_link *link) { - mutex_lock(&link->graph_obj.mdev->graph_mutex); + spin_lock(&link->graph_obj.mdev->lock); __media_remove_intf_link(link); - mutex_unlock(&link->graph_obj.mdev->graph_mutex); + spin_unlock(&link->graph_obj.mdev->lock); } EXPORT_SYMBOL_GPL(media_remove_intf_link); @@ -954,8 +954,8 @@ void media_remove_intf_links(struct media_interface *intf) if (intf->graph_obj.mdev == NULL) return; - mutex_lock(&intf->graph_obj.mdev->graph_mutex); + spin_lock(&intf->graph_obj.mdev->lock); __media_remove_intf_links(intf); - mutex_unlock(&intf->graph_obj.mdev->graph_mutex); + spin_unlock(&intf->graph_obj.mdev->lock); } EXPORT_SYMBOL_GPL(media_remove_intf_links); diff --git a/include/media/media-device.h b/include/media/media-device.h index 1b12774a9ab42c..87ff299e1265d2 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -88,7 +88,7 @@ struct media_device { struct list_head pads; struct list_head links; - /* Protects the entities list */ + /* Protects the graph objects creation/removal */ spinlock_t lock; /* Serializes graph operations. */ struct mutex graph_mutex; -- cgit 1.2.3-korg From 188d2d551244f4196b616c90f3411732a6ebb2ab Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 31 Aug 2015 13:23:03 -0300 Subject: [media] tuner-core: add an input pad Tuners actually have at least one connector on its input. Add a PAD to connect it. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-core/dvbdev.c | 5 ++++- drivers/media/usb/au0828/au0828-core.c | 5 ++++- drivers/media/usb/cx231xx/cx231xx-cards.c | 2 +- drivers/media/v4l2-core/tuner-core.c | 8 +++++--- include/media/tuner.h | 8 ++++++++ 5 files changed, 22 insertions(+), 6 deletions(-) diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index f00f1a5f279cfa..a8e7e2398f7a5b 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -34,6 +34,9 @@ #include #include "dvbdev.h" +/* Due to enum tuner_pad_index */ +#include + static DEFINE_MUTEX(dvbdev_mutex); static int dvbdev_debug; @@ -552,7 +555,7 @@ void dvb_create_media_graph(struct dvb_adapter *adap) } if (tuner && demod) - media_create_pad_link(tuner, 0, demod, 0, 0); + media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, demod, 0, 0); if (demod && demux) media_create_pad_link(demod, 1, demux, 0, MEDIA_LNK_FL_ENABLED); diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c index 7f645bcb746391..ee20f4354ba26a 100644 --- a/drivers/media/usb/au0828/au0828-core.c +++ b/drivers/media/usb/au0828/au0828-core.c @@ -27,6 +27,9 @@ #include #include +/* Due to enum tuner_pad_index */ +#include + /* * 1 = General debug messages * 2 = USB handling @@ -260,7 +263,7 @@ static void au0828_create_media_graph(struct au0828_dev *dev) return; if (tuner) - media_create_pad_link(tuner, 0, decoder, 0, + media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, decoder, 0, MEDIA_LNK_FL_ENABLED); media_create_pad_link(decoder, 1, &dev->vdev.entity, 0, MEDIA_LNK_FL_ENABLED); diff --git a/drivers/media/usb/cx231xx/cx231xx-cards.c b/drivers/media/usb/cx231xx/cx231xx-cards.c index 695f0c092c794c..29cf0c268b190f 100644 --- a/drivers/media/usb/cx231xx/cx231xx-cards.c +++ b/drivers/media/usb/cx231xx/cx231xx-cards.c @@ -1264,7 +1264,7 @@ static void cx231xx_create_media_graph(struct cx231xx *dev) return; if (tuner) - media_create_pad_link(tuner, 0, decoder, 0, + media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, decoder, 0, MEDIA_LNK_FL_ENABLED); media_create_pad_link(decoder, 1, &dev->vdev.entity, 0, MEDIA_LNK_FL_ENABLED); diff --git a/drivers/media/v4l2-core/tuner-core.c b/drivers/media/v4l2-core/tuner-core.c index 100b8f0696409b..b90f2a52db9631 100644 --- a/drivers/media/v4l2-core/tuner-core.c +++ b/drivers/media/v4l2-core/tuner-core.c @@ -134,8 +134,9 @@ struct tuner { unsigned int type; /* chip type id */ void *config; const char *name; + #if defined(CONFIG_MEDIA_CONTROLLER) - struct media_pad pad; + struct media_pad pad[TUNER_NUM_PADS]; #endif }; @@ -695,11 +696,12 @@ static int tuner_probe(struct i2c_client *client, /* Should be just before return */ register_client: #if defined(CONFIG_MEDIA_CONTROLLER) - t->pad.flags = MEDIA_PAD_FL_SOURCE; + t->pad[TUNER_PAD_RF_INPUT].flags = MEDIA_PAD_FL_SINK; + t->pad[TUNER_PAD_IF_OUTPUT].flags = MEDIA_PAD_FL_SOURCE; t->sd.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_TUNER; t->sd.entity.name = t->name; - ret = media_entity_init(&t->sd.entity, 1, &t->pad); + ret = media_entity_init(&t->sd.entity, TUNER_NUM_PADS, &t->pad[0]); if (ret < 0) { tuner_err("failed to initialize media entity!\n"); kfree(t); diff --git a/include/media/tuner.h b/include/media/tuner.h index 486b6a54363b17..e5321fda548935 100644 --- a/include/media/tuner.h +++ b/include/media/tuner.h @@ -21,6 +21,14 @@ #include +/* Tuner PADs */ +/* FIXME: is this the right place for it? */ +enum tuner_pad_index { + TUNER_PAD_RF_INPUT, + TUNER_PAD_IF_OUTPUT, + TUNER_NUM_PADS +}; + #define ADDR_UNSET (255) #define TUNER_TEMIC_PAL 0 /* 4002 FH5 (3X 7756, 9483) */ -- cgit 1.2.3-korg From 04bf12c2d313478a3e5c9ff59a7ba92ce418bee6 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 10 Dec 2015 09:16:34 -0200 Subject: [media] dvbdev: enable all interface links at init Interface links are normally enabled, meaning that the interfaces are bound to the entities. So, any ioctl sent to the interface are reflected at the entities managed by the interface. However, when a device is in use, other interfaces for the same hardware could be decoupled from the entities linked to them, because the hardware may have some parts busy. That's for example, what happens when an hybrid TV device is in use. If it is streaming analog TV or capturing signals from S-Video/Composite connectors, typically the digital part of the hardware can't be used and vice-versa. This is generally due to some internal hardware or firmware limitation, that it is not easily mapped via data pipelines. What the Kernel drivers do internally is that they decouple the hardware from the interface. So, all changes, if allowed, are done only at some interface cache, but not physically changed at the hardware. The usage is similar to the usage of the MEDIA_LNK_FL_ENABLED on data links. So, let's use the same flag to indicate if either the interface to entity link is bound/enabled or not. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-core/dvbdev.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index a8e7e2398f7a5b..5c4fb41060b49c 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -396,7 +396,8 @@ static void dvb_register_media_device(struct dvb_device *dvbdev, if (!dvbdev->entity || !dvbdev->intf_devnode) return; - media_create_intf_link(dvbdev->entity, &dvbdev->intf_devnode->intf, 0); + media_create_intf_link(dvbdev->entity, &dvbdev->intf_devnode->intf, + MEDIA_LNK_FL_ENABLED); #endif } @@ -583,20 +584,24 @@ void dvb_create_media_graph(struct dvb_adapter *adap) /* Create indirect interface links for FE->tuner, DVR->demux and CA->ca */ media_device_for_each_intf(intf, mdev) { if (intf->type == MEDIA_INTF_T_DVB_CA && ca) - media_create_intf_link(ca, intf, 0); + media_create_intf_link(ca, intf, MEDIA_LNK_FL_ENABLED); if (intf->type == MEDIA_INTF_T_DVB_FE && tuner) - media_create_intf_link(tuner, intf, 0); + media_create_intf_link(tuner, intf, + MEDIA_LNK_FL_ENABLED); if (intf->type == MEDIA_INTF_T_DVB_DVR && demux) - media_create_intf_link(demux, intf, 0); + media_create_intf_link(demux, intf, + MEDIA_LNK_FL_ENABLED); media_device_for_each_entity(entity, mdev) { if (entity->type == MEDIA_ENT_T_DVB_TSOUT) { if (!strcmp(entity->name, DVR_TSOUT)) - media_create_intf_link(entity, intf, 0); + media_create_intf_link(entity, intf, + MEDIA_LNK_FL_ENABLED); if (!strcmp(entity->name, DEMUX_TSOUT)) - media_create_intf_link(entity, intf, 0); + media_create_intf_link(entity, intf, + MEDIA_LNK_FL_ENABLED); break; } } -- cgit 1.2.3-korg From 7e9a8ad57c097b7fe7ed9ba514f78789363aa6b8 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 10 Dec 2015 10:58:04 -0200 Subject: [media] au0828: postpone call to au0828_unregister_media_device() The DVB core needs to unregister the media device. So, we can't call au0828_unregister_media_device() before calling au0828_dvb_unregister(), otherwise the DVB MC free code (that will be implemented on the next patch) will fail. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/au0828/au0828-core.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c index ee20f4354ba26a..e7ebb5e638be51 100644 --- a/drivers/media/usb/au0828/au0828-core.c +++ b/drivers/media/usb/au0828/au0828-core.c @@ -178,8 +178,6 @@ static void au0828_usb_disconnect(struct usb_interface *interface) */ dev->dev_state = DEV_DISCONNECTED; - au0828_unregister_media_device(dev); - au0828_rc_unregister(dev); /* Digital TV */ au0828_dvb_unregister(dev); @@ -193,6 +191,10 @@ static void au0828_usb_disconnect(struct usb_interface *interface) au0828_analog_unregister(dev); v4l2_device_disconnect(&dev->v4l2_dev); v4l2_device_put(&dev->v4l2_dev); + /* + * No need to call au0828_usb_release() if V4L2 is enabled, + * as this is already called via au0828_usb_v4l2_release() + */ return; } #endif -- cgit 1.2.3-korg From a9709e435454cf84d8971261ff8ded3a453b9b13 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Mon, 24 Aug 2015 14:57:53 -0300 Subject: [media] media: don't try to empty links list in media_entity_cleanup() The media_entity_cleanup() function only cleans up the entity links list but this operation is already made in media_device_unregister_entity(). In most cases this should be harmless (besides having duplicated code) since the links list would be empty so the iteration would not happen but the links list is initialized in media_device_register_entity() so if a driver fails to register an entity with a media device and clean up the entity in the error path, a NULL deference pointer error will happen. So don't try to empty the links list in media_entity_cleanup() since is either done already or haven't been initialized yet. Signed-off-by: Javier Martinez Canillas --- drivers/media/media-entity.c | 7 ------- 1 file changed, 7 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index b1390d843909ba..d7243cb56c79d1 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -242,13 +242,6 @@ EXPORT_SYMBOL_GPL(media_entity_init); void media_entity_cleanup(struct media_entity *entity) { - struct media_link *link, *tmp; - - list_for_each_entry_safe(link, tmp, &entity->links, list) { - media_gobj_remove(&link->graph_obj); - list_del(&link->list); - kfree(link); - } } EXPORT_SYMBOL_GPL(media_entity_cleanup); -- cgit 1.2.3-korg From eb83a5176801d53f9f78eff8c0bf03e627110206 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 10 Dec 2015 15:29:22 -0200 Subject: [media] media-entity: fix backlink removal on __media_entity_remove_link() The logic is testing if num_links==0 at the wrong place. Due to that, a backlink may be kept without removal, causing KASAN to complain about usage after free during either entity or link removal. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index d7243cb56c79d1..d9d42fab22ad28 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -662,13 +662,13 @@ static void __media_entity_remove_link(struct media_entity *entity, if (link->source->entity == entity) remote->num_backlinks--; - if (--remote->num_links == 0) - break; - /* Remove the remote link */ list_del(&rlink->list); media_gobj_remove(&rlink->graph_obj); kfree(rlink); + + if (--remote->num_links == 0) + break; } list_del(&link->list); media_gobj_remove(&link->graph_obj); -- cgit 1.2.3-korg From f50d51661af375c40cae894753e8cd9b1fe82c65 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 4 Sep 2015 15:10:29 -0300 Subject: [media] dvbdev: returns error if graph object creation fails Right now, if something gets wrong at dvb_create_media_entity() or at dvb_create_media_graph(), the device will still be registered. Change the logic to properly handle it and free all media graph objects if something goes wrong at dvb_register_device(). Also, change the logic at dvb_create_media_graph() to return an error code if something goes wrong. It is up to the caller to implement the right logic and to call dvb_unregister_device() to unregister the already-created objects. While here, add a missing logic to unregister the created interfaces. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-core/dvbdev.c | 313 +++++++++++++++++++++++----------------- drivers/media/dvb-core/dvbdev.h | 7 +- drivers/media/media-device.c | 10 +- 3 files changed, 193 insertions(+), 137 deletions(-) diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index 5c4fb41060b49c..bc650c637fc02d 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -183,7 +183,40 @@ skip: return -ENFILE; } -static void dvb_create_tsout_entity(struct dvb_device *dvbdev, +static void dvb_media_device_free(struct dvb_device *dvbdev) +{ +#if defined(CONFIG_MEDIA_CONTROLLER_DVB) + if (dvbdev->entity) { + media_device_unregister_entity(dvbdev->entity); + kfree(dvbdev->entity); + kfree(dvbdev->pads); + dvbdev->entity = NULL; + dvbdev->pads = NULL; + } + + if (dvbdev->tsout_entity) { + int i; + + for (i = 0; i < dvbdev->tsout_num_entities; i++) { + media_device_unregister_entity(&dvbdev->tsout_entity[i]); + kfree(dvbdev->tsout_entity[i].name); + } + kfree(dvbdev->tsout_entity); + kfree(dvbdev->tsout_pads); + dvbdev->tsout_entity = NULL; + dvbdev->tsout_pads = NULL; + + dvbdev->tsout_num_entities = 0; + } + + if (dvbdev->intf_devnode) { + media_devnode_remove(dvbdev->intf_devnode); + dvbdev->intf_devnode = NULL; + } +#endif +} + +static int dvb_create_tsout_entity(struct dvb_device *dvbdev, const char *name, int npads) { #if defined(CONFIG_MEDIA_CONTROLLER_DVB) @@ -192,77 +225,62 @@ static void dvb_create_tsout_entity(struct dvb_device *dvbdev, dvbdev->tsout_pads = kcalloc(npads, sizeof(*dvbdev->tsout_pads), GFP_KERNEL); if (!dvbdev->tsout_pads) - return; + return -ENOMEM; + dvbdev->tsout_entity = kcalloc(npads, sizeof(*dvbdev->tsout_entity), GFP_KERNEL); - if (!dvbdev->tsout_entity) { - kfree(dvbdev->tsout_pads); - dvbdev->tsout_pads = NULL; - return; - } + if (!dvbdev->tsout_entity) + return -ENOMEM; + + dvbdev->tsout_num_entities = npads; + for (i = 0; i < npads; i++) { struct media_pad *pads = &dvbdev->tsout_pads[i]; struct media_entity *entity = &dvbdev->tsout_entity[i]; entity->name = kasprintf(GFP_KERNEL, "%s #%d", name, i); - if (!entity->name) { - ret = -ENOMEM; - break; - } + if (!entity->name) + return -ENOMEM; entity->type = MEDIA_ENT_T_DVB_TSOUT; pads->flags = MEDIA_PAD_FL_SINK; ret = media_entity_init(entity, 1, pads); if (ret < 0) - break; + return ret; ret = media_device_register_entity(dvbdev->adapter->mdev, entity); if (ret < 0) - break; - } - - if (!ret) { - dvbdev->tsout_num_entities = npads; - return; + return ret; } - - for (i--; i >= 0; i--) { - media_device_unregister_entity(&dvbdev->tsout_entity[i]); - kfree(dvbdev->tsout_entity[i].name); - } - - printk(KERN_ERR - "%s: media_device_register_entity failed for %s\n", - __func__, name); - - kfree(dvbdev->tsout_entity); - kfree(dvbdev->tsout_pads); - dvbdev->tsout_entity = NULL; - dvbdev->tsout_pads = NULL; #endif + return 0; } #define DEMUX_TSOUT "demux-tsout" #define DVR_TSOUT "dvr-tsout" -static void dvb_create_media_entity(struct dvb_device *dvbdev, - int type, int demux_sink_pads) +static int dvb_create_media_entity(struct dvb_device *dvbdev, + int type, int demux_sink_pads) { #if defined(CONFIG_MEDIA_CONTROLLER_DVB) - int i, ret = 0, npads; + int i, ret, npads; switch (type) { case DVB_DEVICE_FRONTEND: npads = 2; break; case DVB_DEVICE_DVR: - dvb_create_tsout_entity(dvbdev, DVR_TSOUT, demux_sink_pads); - return; + ret = dvb_create_tsout_entity(dvbdev, DVR_TSOUT, + demux_sink_pads); + return ret; case DVB_DEVICE_DEMUX: npads = 1 + demux_sink_pads; - dvb_create_tsout_entity(dvbdev, DEMUX_TSOUT, demux_sink_pads); + ret = dvb_create_tsout_entity(dvbdev, DEMUX_TSOUT, + demux_sink_pads); + if (ret < 0) + return ret; break; case DVB_DEVICE_CA: npads = 2; @@ -277,24 +295,22 @@ static void dvb_create_media_entity(struct dvb_device *dvbdev, * the Media Controller, let's not create the decap * entities yet. */ - return; + return 0; default: - return; + return 0; } dvbdev->entity = kzalloc(sizeof(*dvbdev->entity), GFP_KERNEL); if (!dvbdev->entity) - return; + return -ENOMEM; dvbdev->entity->name = dvbdev->name; if (npads) { dvbdev->pads = kcalloc(npads, sizeof(*dvbdev->pads), GFP_KERNEL); - if (!dvbdev->pads) { - kfree(dvbdev->entity); - return; - } + if (!dvbdev->pads) + return -ENOMEM; } switch (type) { @@ -315,50 +331,46 @@ static void dvb_create_media_entity(struct dvb_device *dvbdev, dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE; break; default: + /* Should never happen, as the first switch prevents it */ kfree(dvbdev->entity); + kfree(dvbdev->pads); dvbdev->entity = NULL; - return; + dvbdev->pads = NULL; + return 0; } - if (npads) + if (npads) { ret = media_entity_init(dvbdev->entity, npads, dvbdev->pads); - if (!ret) - ret = media_device_register_entity(dvbdev->adapter->mdev, - dvbdev->entity); - if (ret < 0) { - printk(KERN_ERR - "%s: media_device_register_entity failed for %s\n", - __func__, dvbdev->entity->name); - - media_device_unregister_entity(dvbdev->entity); - for (i = 0; i < dvbdev->tsout_num_entities; i++) { - media_device_unregister_entity(&dvbdev->tsout_entity[i]); - kfree(dvbdev->tsout_entity[i].name); - } - kfree(dvbdev->pads); - kfree(dvbdev->entity); - kfree(dvbdev->tsout_pads); - kfree(dvbdev->tsout_entity); - dvbdev->entity = NULL; - return; + if (ret) + return ret; } + ret = media_device_register_entity(dvbdev->adapter->mdev, + dvbdev->entity); + if (ret) + return (ret); printk(KERN_DEBUG "%s: media entity '%s' registered.\n", __func__, dvbdev->entity->name); + #endif + return 0; } -static void dvb_register_media_device(struct dvb_device *dvbdev, - int type, int minor, - unsigned demux_sink_pads) +static int dvb_register_media_device(struct dvb_device *dvbdev, + int type, int minor, + unsigned demux_sink_pads) { #if defined(CONFIG_MEDIA_CONTROLLER_DVB) + struct media_link *link; u32 intf_type; + int ret; if (!dvbdev->adapter->mdev) - return; + return 0; - dvb_create_media_entity(dvbdev, type, demux_sink_pads); + ret = dvb_create_media_entity(dvbdev, type, demux_sink_pads); + if (ret) + return ret; switch (type) { case DVB_DEVICE_FRONTEND: @@ -377,13 +389,16 @@ static void dvb_register_media_device(struct dvb_device *dvbdev, intf_type = MEDIA_INTF_T_DVB_NET; break; default: - return; + return 0; } dvbdev->intf_devnode = media_devnode_create(dvbdev->adapter->mdev, - intf_type, 0, - DVB_MAJOR, minor, - GFP_KERNEL); + intf_type, 0, + DVB_MAJOR, minor, + GFP_KERNEL); + + if (!dvbdev->intf_devnode) + return -ENOMEM; /* * Create the "obvious" link, e. g. the ones that represent @@ -393,13 +408,15 @@ static void dvb_register_media_device(struct dvb_device *dvbdev, * DVB demux intf -> dvr */ - if (!dvbdev->entity || !dvbdev->intf_devnode) - return; - - media_create_intf_link(dvbdev->entity, &dvbdev->intf_devnode->intf, - MEDIA_LNK_FL_ENABLED); + if (!dvbdev->entity) + return 0; + link = media_create_intf_link(dvbdev->entity, &dvbdev->intf_devnode->intf, + MEDIA_LNK_FL_ENABLED); + if (!link) + return -ENOMEM; #endif + return 0; } int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev, @@ -410,7 +427,7 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev, struct file_operations *dvbdevfops; struct device *clsdev; int minor; - int id; + int id, ret; mutex_lock(&dvbdev_register_lock); @@ -421,7 +438,7 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev, return -ENFILE; } - *pdvbdev = dvbdev = kmalloc(sizeof(struct dvb_device), GFP_KERNEL); + *pdvbdev = dvbdev = kzalloc(sizeof(*dvbdev), GFP_KERNEL); if (!dvbdev){ mutex_unlock(&dvbdev_register_lock); @@ -470,6 +487,20 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev, dvb_minors[minor] = dvbdev; up_write(&minor_rwsem); + ret = dvb_register_media_device(dvbdev, type, minor, demux_sink_pads); + if (ret) { + printk(KERN_ERR + "%s: dvb_register_media_device failed to create the mediagraph\n", + __func__); + + dvb_media_device_free(dvbdev); + kfree(dvbdevfops); + kfree(dvbdev); + up_write(&minor_rwsem); + mutex_unlock(&dvbdev_register_lock); + return ret; + } + mutex_unlock(&dvbdev_register_lock); clsdev = device_create(dvb_class, adap->device, @@ -483,8 +514,6 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev, dprintk(KERN_DEBUG "DVB: register adapter%d/%s%d @ minor: %i (0x%02x)\n", adap->num, dnames[type], id, minor, minor); - dvb_register_media_device(dvbdev, type, minor, demux_sink_pads); - return 0; } EXPORT_SYMBOL(dvb_register_device); @@ -499,24 +528,9 @@ void dvb_unregister_device(struct dvb_device *dvbdev) dvb_minors[dvbdev->minor] = NULL; up_write(&minor_rwsem); - device_destroy(dvb_class, MKDEV(DVB_MAJOR, dvbdev->minor)); - -#if defined(CONFIG_MEDIA_CONTROLLER_DVB) - if (dvbdev->entity) { - int i; + dvb_media_device_free(dvbdev); - media_device_unregister_entity(dvbdev->entity); - for (i = 0; i < dvbdev->tsout_num_entities; i++) { - media_device_unregister_entity(&dvbdev->tsout_entity[i]); - kfree(dvbdev->tsout_entity[i].name); - } - - kfree(dvbdev->entity); - kfree(dvbdev->pads); - kfree(dvbdev->tsout_entity); - kfree(dvbdev->tsout_pads); - } -#endif + device_destroy(dvb_class, MKDEV(DVB_MAJOR, dvbdev->minor)); list_del (&dvbdev->list_head); kfree (dvbdev->fops); @@ -526,17 +540,19 @@ EXPORT_SYMBOL(dvb_unregister_device); #ifdef CONFIG_MEDIA_CONTROLLER_DVB -void dvb_create_media_graph(struct dvb_adapter *adap) +int dvb_create_media_graph(struct dvb_adapter *adap) { struct media_device *mdev = adap->mdev; struct media_entity *entity, *tuner = NULL, *demod = NULL; struct media_entity *demux = NULL, *ca = NULL; + struct media_link *link; struct media_interface *intf; unsigned demux_pad = 0; unsigned dvr_pad = 0; + int ret; if (!mdev) - return; + return 0; media_device_for_each_entity(entity, mdev) { switch (entity->type) { @@ -555,57 +571,94 @@ void dvb_create_media_graph(struct dvb_adapter *adap) } } - if (tuner && demod) - media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, demod, 0, 0); + if (tuner && demod) { + ret = media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, + demod, 0, MEDIA_LNK_FL_ENABLED); + if (ret) + return ret; + } - if (demod && demux) - media_create_pad_link(demod, 1, demux, 0, MEDIA_LNK_FL_ENABLED); - if (demux && ca) - media_create_pad_link(demux, 1, ca, 0, MEDIA_LNK_FL_ENABLED); + if (demod && demux) { + ret = media_create_pad_link(demod, 1, demux, + 0, MEDIA_LNK_FL_ENABLED); + if (ret) + return -ENOMEM; + } + if (demux && ca) { + ret = media_create_pad_link(demux, 1, ca, + 0, MEDIA_LNK_FL_ENABLED); + if (!ret) + return -ENOMEM; + } /* Create demux links for each ringbuffer/pad */ if (demux) { media_device_for_each_entity(entity, mdev) { if (entity->type == MEDIA_ENT_T_DVB_TSOUT) { if (!strncmp(entity->name, DVR_TSOUT, - strlen(DVR_TSOUT))) - media_create_pad_link(demux, - ++dvr_pad, - entity, 0, 0); + strlen(DVR_TSOUT))) { + ret = media_create_pad_link(demux, + ++dvr_pad, + entity, 0, 0); + if (ret) + return ret; + } if (!strncmp(entity->name, DEMUX_TSOUT, - strlen(DEMUX_TSOUT))) - media_create_pad_link(demux, + strlen(DEMUX_TSOUT))) { + ret = media_create_pad_link(demux, ++demux_pad, - entity, 0, 0); + entity, 0, 0); + if (ret) + return ret; + } } } } /* Create indirect interface links for FE->tuner, DVR->demux and CA->ca */ media_device_for_each_intf(intf, mdev) { - if (intf->type == MEDIA_INTF_T_DVB_CA && ca) - media_create_intf_link(ca, intf, MEDIA_LNK_FL_ENABLED); + if (intf->type == MEDIA_INTF_T_DVB_CA && ca) { + link = media_create_intf_link(ca, intf, + MEDIA_LNK_FL_ENABLED); + if (!link) + return -ENOMEM; + } - if (intf->type == MEDIA_INTF_T_DVB_FE && tuner) - media_create_intf_link(tuner, intf, - MEDIA_LNK_FL_ENABLED); + if (intf->type == MEDIA_INTF_T_DVB_FE && tuner) { + link = media_create_intf_link(tuner, intf, + MEDIA_LNK_FL_ENABLED); + if (!link) + return -ENOMEM; + } - if (intf->type == MEDIA_INTF_T_DVB_DVR && demux) - media_create_intf_link(demux, intf, - MEDIA_LNK_FL_ENABLED); + if (intf->type == MEDIA_INTF_T_DVB_DVR && demux) { + link = media_create_intf_link(demux, intf, + MEDIA_LNK_FL_ENABLED); + if (!link) + return -ENOMEM; + } media_device_for_each_entity(entity, mdev) { if (entity->type == MEDIA_ENT_T_DVB_TSOUT) { - if (!strcmp(entity->name, DVR_TSOUT)) - media_create_intf_link(entity, intf, - MEDIA_LNK_FL_ENABLED); - if (!strcmp(entity->name, DEMUX_TSOUT)) - media_create_intf_link(entity, intf, - MEDIA_LNK_FL_ENABLED); + if (!strcmp(entity->name, DVR_TSOUT)) { + link = media_create_intf_link(entity, + intf, + MEDIA_LNK_FL_ENABLED); + if (!link) + return -ENOMEM; + } + if (!strcmp(entity->name, DEMUX_TSOUT)) { + link = media_create_intf_link(entity, + intf, + MEDIA_LNK_FL_ENABLED); + if (!link) + return -ENOMEM; + } break; } } } + return 0; } EXPORT_SYMBOL_GPL(dvb_create_media_graph); #endif diff --git a/drivers/media/dvb-core/dvbdev.h b/drivers/media/dvb-core/dvbdev.h index 7af8adbb589b88..3840dd62bfeeff 100644 --- a/drivers/media/dvb-core/dvbdev.h +++ b/drivers/media/dvb-core/dvbdev.h @@ -206,7 +206,7 @@ int dvb_register_device(struct dvb_adapter *adap, void dvb_unregister_device(struct dvb_device *dvbdev); #ifdef CONFIG_MEDIA_CONTROLLER_DVB -void dvb_create_media_graph(struct dvb_adapter *adap); +int dvb_create_media_graph(struct dvb_adapter *adap); static inline void dvb_register_media_controller(struct dvb_adapter *adap, struct media_device *mdev) { @@ -214,7 +214,10 @@ static inline void dvb_register_media_controller(struct dvb_adapter *adap, } #else -static inline void dvb_create_media_graph(struct dvb_adapter *adap) {} +static inline int dvb_create_media_graph(struct dvb_adapter *adap) +{ + return 0; +}; #define dvb_register_media_controller(a, b) {} #endif diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 96700843b1e4f0..c7d97190a67e3a 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -576,6 +576,10 @@ void media_device_unregister(struct media_device *mdev) struct media_entity *next; struct media_interface *intf, *tmp_intf; + /* Remove all entities from the media device */ + list_for_each_entry_safe(entity, next, &mdev->entities, graph_obj.list) + media_device_unregister_entity(entity); + /* Remove all interfaces from the media device */ spin_lock(&mdev->lock); list_for_each_entry_safe(intf, tmp_intf, &mdev->interfaces, @@ -586,9 +590,6 @@ void media_device_unregister(struct media_device *mdev) } spin_unlock(&mdev->lock); - list_for_each_entry_safe(entity, next, &mdev->entities, graph_obj.list) - media_device_unregister_entity(entity); - device_remove_file(&mdev->devnode.dev, &dev_attr_model); media_devnode_unregister(&mdev->devnode); @@ -654,8 +655,7 @@ void media_device_unregister_entity(struct media_entity *entity) /* Remove all interface links pointing to this entity */ list_for_each_entry(intf, &mdev->interfaces, graph_obj.list) { list_for_each_entry_safe(link, tmp, &intf->links, list) { - if (media_type(link->gobj1) == MEDIA_GRAPH_ENTITY - && link->entity == entity) + if (link->entity == entity) __media_remove_intf_link(link); } } -- cgit 1.2.3-korg From d9c21e3e4b459b45e11406b83ebde163181508a1 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 24 Aug 2015 08:47:54 -0300 Subject: [media] v4l2-core: create MC interfaces for devnodes V4L2 device (and subdevice) nodes should create an interface, if the Media Controller support is enabled. Please notice that radio devices should not create an entity, as radio input/output is either via wires or via ALSA. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/v4l2-core/v4l2-dev.c | 111 ++++++++++++++++++++++++++++------ drivers/media/v4l2-core/v4l2-device.c | 16 ++++- include/media/v4l2-dev.h | 1 + 3 files changed, 109 insertions(+), 19 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c index 2297571a0568a8..077cdc92778cd0 100644 --- a/drivers/media/v4l2-core/v4l2-dev.c +++ b/drivers/media/v4l2-core/v4l2-dev.c @@ -194,9 +194,12 @@ static void v4l2_device_release(struct device *cd) mutex_unlock(&videodev_lock); #if defined(CONFIG_MEDIA_CONTROLLER) - if (v4l2_dev->mdev && - vdev->vfl_type != VFL_TYPE_SUBDEV) - media_device_unregister_entity(&vdev->entity); + if (v4l2_dev->mdev) { + /* Remove interfaces and interface links */ + media_devnode_remove(vdev->intf_devnode); + if (vdev->entity.type != MEDIA_ENT_T_UNKNOWN) + media_device_unregister_entity(&vdev->entity); + } #endif /* Do not call v4l2_device_put if there is no release callback set. @@ -723,6 +726,91 @@ static void determine_valid_ioctls(struct video_device *vdev) BASE_VIDIOC_PRIVATE); } +static int video_register_media_controller(struct video_device *vdev, int type) +{ +#if defined(CONFIG_MEDIA_CONTROLLER) + u32 intf_type; + int ret; + + if (!vdev->v4l2_dev->mdev) + return 0; + + vdev->entity.type = MEDIA_ENT_T_UNKNOWN; + + switch (type) { + case VFL_TYPE_GRABBER: + intf_type = MEDIA_INTF_T_V4L_VIDEO; + vdev->entity.type = MEDIA_ENT_T_V4L2_VIDEO; + break; + case VFL_TYPE_VBI: + intf_type = MEDIA_INTF_T_V4L_VBI; + vdev->entity.type = MEDIA_ENT_T_V4L2_VBI; + break; + case VFL_TYPE_SDR: + intf_type = MEDIA_INTF_T_V4L_SWRADIO; + vdev->entity.type = MEDIA_ENT_T_V4L2_SWRADIO; + break; + case VFL_TYPE_RADIO: + intf_type = MEDIA_INTF_T_V4L_RADIO; + /* + * Radio doesn't have an entity at the V4L2 side to represent + * radio input or output. Instead, the audio input/output goes + * via either physical wires or ALSA. + */ + break; + case VFL_TYPE_SUBDEV: + intf_type = MEDIA_INTF_T_V4L_SUBDEV; + /* Entity will be created via v4l2_device_register_subdev() */ + break; + default: + return 0; + } + + if (vdev->entity.type != MEDIA_ENT_T_UNKNOWN) { + vdev->entity.name = vdev->name; + + /* Needed just for backward compatibility with legacy MC API */ + vdev->entity.info.dev.major = VIDEO_MAJOR; + vdev->entity.info.dev.minor = vdev->minor; + + ret = media_device_register_entity(vdev->v4l2_dev->mdev, + &vdev->entity); + if (ret < 0) { + printk(KERN_WARNING + "%s: media_device_register_entity failed\n", + __func__); + return ret; + } + } + + vdev->intf_devnode = media_devnode_create(vdev->v4l2_dev->mdev, + intf_type, + 0, VIDEO_MAJOR, + vdev->minor, + GFP_KERNEL); + if (!vdev->intf_devnode) { + media_device_unregister_entity(&vdev->entity); + return -ENOMEM; + } + + if (vdev->entity.type != MEDIA_ENT_T_UNKNOWN) { + struct media_link *link; + + link = media_create_intf_link(&vdev->entity, + &vdev->intf_devnode->intf, 0); + if (!link) { + media_devnode_remove(vdev->intf_devnode); + media_device_unregister_entity(&vdev->entity); + return -ENOMEM; + } + } + + /* FIXME: how to create the other interface links? */ + +#endif + return 0; +} + /** * __video_register_device - register video4linux devices * @vdev: video device structure we want to register @@ -918,22 +1006,9 @@ int __video_register_device(struct video_device *vdev, int type, int nr, /* Increase v4l2_device refcount */ v4l2_device_get(vdev->v4l2_dev); -#if defined(CONFIG_MEDIA_CONTROLLER) /* Part 5: Register the entity. */ - if (vdev->v4l2_dev->mdev && - vdev->vfl_type != VFL_TYPE_SUBDEV) { - vdev->entity.type = MEDIA_ENT_T_V4L2_VIDEO; - vdev->entity.name = vdev->name; - vdev->entity.info.dev.major = VIDEO_MAJOR; - vdev->entity.info.dev.minor = vdev->minor; - ret = media_device_register_entity(vdev->v4l2_dev->mdev, - &vdev->entity); - if (ret < 0) - printk(KERN_WARNING - "%s: media_device_register_entity failed\n", - __func__); - } -#endif + ret = video_register_media_controller(vdev, type); + /* Part 6: Activate this minor. The char device can now be used. */ set_bit(V4L2_FL_REGISTERED, &vdev->flags); diff --git a/drivers/media/v4l2-core/v4l2-device.c b/drivers/media/v4l2-core/v4l2-device.c index 7129e438f29e77..3c87307e56f08e 100644 --- a/drivers/media/v4l2-core/v4l2-device.c +++ b/drivers/media/v4l2-core/v4l2-device.c @@ -258,6 +258,17 @@ int v4l2_device_register_subdev_nodes(struct v4l2_device *v4l2_dev) #if defined(CONFIG_MEDIA_CONTROLLER) sd->entity.info.dev.major = VIDEO_MAJOR; sd->entity.info.dev.minor = vdev->minor; + + /* Interface is created by __video_register_device() */ + if (vdev->v4l2_dev->mdev) { + struct media_link *link; + + link = media_create_intf_link(&sd->entity, + &vdev->intf_devnode->intf, + 0); + if (!link) + goto clean_up; + } #endif sd->devnode = vdev; } @@ -294,7 +305,10 @@ void v4l2_device_unregister_subdev(struct v4l2_subdev *sd) #if defined(CONFIG_MEDIA_CONTROLLER) if (v4l2_dev->mdev) { - media_entity_remove_links(&sd->entity); + /* + * No need to explicitly remove links, as both pads and + * links are removed by the function below, in the right order + */ media_device_unregister_entity(&sd->entity); } #endif diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h index acbcd2f5fe7f81..eeabf20e87a66d 100644 --- a/include/media/v4l2-dev.h +++ b/include/media/v4l2-dev.h @@ -86,6 +86,7 @@ struct video_device { #if defined(CONFIG_MEDIA_CONTROLLER) struct media_entity entity; + struct media_intf_devnode *intf_devnode; #endif /* device ops */ const struct v4l2_file_operations *fops; -- cgit 1.2.3-korg From c358e80d70d97efc144e7d496c92985ad74218a8 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sat, 29 Aug 2015 23:43:03 -0300 Subject: [media] media-entity.h: document all the structs Only a few structs are documented on kernel-doc-nano format (the ones added by the MC next gen patches). Add a documentation for all structs, and ensure that they'll be producing the documentation at the Kernel's device driver DocBook. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/media/media-entity.h | 114 +++++++++++++++++++++++++++++++------------ 1 file changed, 84 insertions(+), 30 deletions(-) diff --git a/include/media/media-entity.h b/include/media/media-entity.h index f165d303f03c89..fd19aecdcbb642 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -55,11 +55,13 @@ enum media_gobj_type { /** * struct media_gobj - Define a graph object. * + * @mdev: Pointer to the struct media_device that owns the object * @id: Non-zero object ID identifier. The ID should be unique * inside a media_device, as it is composed by * MEDIA_BITS_PER_TYPE to store the type plus * MEDIA_BITS_PER_LOCAL_ID to store a per-type ID * (called as "local ID"). + * @list: List entry stored in one of the per-type mdev object lists * * All objects on the media graph should have this struct embedded */ @@ -73,6 +75,28 @@ struct media_gobj { struct media_pipeline { }; +/** + * struct media_link - A link object part of a media graph. + * + * @graph_obj: Embedded structure containing the media object common data + * @list: Linked list associated with an entity or an interface that + * owns the link. + * @gobj0: Part of a union. Used to get the pointer for the first + * graph_object of the link. + * @source: Part of a union. Used only if the first object (gobj0) is + * a pad. In that case, it represents the source pad. + * @intf: Part of a union. Used only if the first object (gobj0) is + * an interface. + * @gobj1: Part of a union. Used to get the pointer for the second + * graph_object of the link. + * @source: Part of a union. Used only if the second object (gobj1) is + * a pad. In that case, it represents the sink pad. + * @entity: Part of a union. Used only if the second object (gobj1) is + * an entity. + * @reverse: Pointer to the link for the reverse direction of a pad to pad + * link. + * @flags: Link flags, as defined in uapi/media.h (MEDIA_LNK_FL_*) + */ struct media_link { struct media_gobj graph_obj; struct list_head list; @@ -86,15 +110,23 @@ struct media_link { struct media_pad *sink; struct media_entity *entity; }; - struct media_link *reverse; /* Link in the reverse direction */ - unsigned long flags; /* Link flags (MEDIA_LNK_FL_*) */ + struct media_link *reverse; + unsigned long flags; }; +/** + * struct media_pad - A media pad graph object. + * + * @graph_obj: Embedded structure containing the media object common data + * @entity: Entity this pad belongs to + * @index: Pad index in the entity pads array, numbered from 0 to n + * @flags: Pad flags, as defined in uapi/media.h (MEDIA_PAD_FL_*) + */ struct media_pad { struct media_gobj graph_obj; /* must be first field in struct */ - struct media_entity *entity; /* Entity this pad belongs to */ - u16 index; /* Pad index in the entity pads array */ - unsigned long flags; /* Pad flags (MEDIA_PAD_FL_*) */ + struct media_entity *entity; + u16 index; + unsigned long flags; }; /** @@ -113,56 +145,78 @@ struct media_entity_operations { int (*link_validate)(struct media_link *link); }; +/** + * struct media_entity - A media entity graph object. + * + * @graph_obj: Embedded structure containing the media object common data. + * @name: Entity name. + * @type: Entity type, as defined in uapi/media.h (MEDIA_ENT_T_*) + * @revision: Entity revision - OBSOLETE - should be removed soon. + * @flags: Entity flags, as defined in uapi/media.h (MEDIA_ENT_FL_*) + * @group_id: Entity group ID - OBSOLETE - should be removed soon. + * @num_pads: Number of sink and source pads. + * @num_links: Total number of links, forward and back, enabled and disabled. + * @num_backlinks: Number of backlinks + * @pads: Pads array with the size defined by @num_pads. + * @links: List of data links. + * @ops: Entity operations. + * @stream_count: Stream count for the entity. + * @use_count: Use count for the entity. + * @pipe: Pipeline this entity belongs to. + * @info: Union with devnode information. Kept just for backward + * compatibility. + * @major: Devnode major number (zero if not applicable). Kept just + * for backward compatibility. + * @minor: Devnode minor number (zero if not applicable). Kept just + * for backward compatibility. + * + * NOTE: @stream_count and @use_count reference counts must never be + * negative, but are signed integers on purpose: a simple WARN_ON(<0) check + * can be used to detect reference count bugs that would make them negative. + */ struct media_entity { struct media_gobj graph_obj; /* must be first field in struct */ - const char *name; /* Entity name */ - u32 type; /* Entity type (MEDIA_ENT_T_*) */ - u32 revision; /* Entity revision, driver specific */ - unsigned long flags; /* Entity flags (MEDIA_ENT_FL_*) */ - u32 group_id; /* Entity group ID */ + const char *name; + u32 type; + u32 revision; + unsigned long flags; + u32 group_id; - u16 num_pads; /* Number of sink and source pads */ - u16 num_links; /* Number of existing links, both - * enabled and disabled */ - u16 num_backlinks; /* Number of backlinks */ + u16 num_pads; + u16 num_links; + u16 num_backlinks; - struct media_pad *pads; /* Pads array (num_pads objects) */ - struct list_head links; /* Pad-to-pad links list */ + struct media_pad *pads; + struct list_head links; - const struct media_entity_operations *ops; /* Entity operations */ + const struct media_entity_operations *ops; /* Reference counts must never be negative, but are signed integers on * purpose: a simple WARN_ON(<0) check can be used to detect reference * count bugs that would make them negative. */ - int stream_count; /* Stream count for the entity. */ - int use_count; /* Use count for the entity. */ + int stream_count; + int use_count; - struct media_pipeline *pipe; /* Pipeline this entity belongs to. */ + struct media_pipeline *pipe; union { - /* Node specifications */ struct { u32 major; u32 minor; } dev; - - /* Sub-device specifications */ - /* Nothing needed yet */ } info; }; /** - * struct media_intf_devnode - Define a Kernel API interface + * struct media_interface - A media interface graph object. * * @graph_obj: embedded graph object - * @list: Linked list used to find other interfaces that belong - * to the same media controller * @links: List of links pointing to graph entities - * @type: Type of the interface as defined at the + * @type: Type of the interface as defined in the * uapi/media/media.h header, e. g. * MEDIA_INTF_T_* - * @flags: Interface flags as defined at uapi/media/media.h + * @flags: Interface flags as defined in uapi/media/media.h */ struct media_interface { struct media_gobj graph_obj; @@ -172,7 +226,7 @@ struct media_interface { }; /** - * struct media_intf_devnode - Define a Kernel API interface via a device node + * struct media_intf_devnode - A media interface via a device node. * * @intf: embedded interface object * @major: Major number of a device node -- cgit 1.2.3-korg From 49a11518f84c6fda6b2740e592ce53e1a22311a3 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 31 Aug 2015 11:41:29 -0300 Subject: [media] media.h: create connector entities for hybrid TV devices Add entities to represent the connectors that exists inside a hybrid TV device. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/uapi/linux/media.h | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h index 72ac39de382254..f9520225a211b5 100644 --- a/include/uapi/linux/media.h +++ b/include/uapi/linux/media.h @@ -61,6 +61,7 @@ struct media_device_info { #define MEDIA_ENT_T_DVB_BASE 0x00000000 #define MEDIA_ENT_T_V4L2_BASE 0x00010000 #define MEDIA_ENT_T_V4L2_SUBDEV_BASE 0x00020000 +#define MEDIA_ENT_T_CONNECTOR_BASE 0x00030000 /* * V4L2 entities - Those are used for DMA (mmap/DMABUF) and @@ -105,6 +106,13 @@ struct media_device_info { #define MEDIA_ENT_T_DVB_CA (MEDIA_ENT_T_DVB_BASE + 4) #define MEDIA_ENT_T_DVB_NET_DECAP (MEDIA_ENT_T_DVB_BASE + 5) +/* Connectors */ +#define MEDIA_ENT_T_CONN_RF (MEDIA_ENT_T_CONNECTOR_BASE + 1) +#define MEDIA_ENT_T_CONN_SVIDEO (MEDIA_ENT_T_CONNECTOR_BASE + 2) +#define MEDIA_ENT_T_CONN_COMPOSITE (MEDIA_ENT_T_CONNECTOR_BASE + 3) +/* For internal test signal generators and other debug connectors */ +#define MEDIA_ENT_T_CONN_TEST (MEDIA_ENT_T_CONNECTOR_BASE + 4) + #ifndef __KERNEL__ /* Legacy symbols used to avoid userspace compilation breakages */ #define MEDIA_ENT_TYPE_SHIFT 16 @@ -121,9 +129,9 @@ struct media_device_info { #define MEDIA_ENT_T_DEVNODE_DVB (MEDIA_ENT_T_DEVNODE + 4) #endif -/* Entity types */ - +/* Entity flags */ #define MEDIA_ENT_FL_DEFAULT (1 << 0) +#define MEDIA_ENT_FL_CONNECTOR (1 << 1) struct media_entity_desc { __u32 id; -- cgit 1.2.3-korg From d1f337375aedb2999bdca24b40ba6e5c1a796eb4 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 31 Aug 2015 11:43:09 -0300 Subject: [media] au0828: add support for the connectors Depending on the input, an au0828 may have a different number of connectors. add entities to represent them. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/au0828/au0828-core.c | 15 +++++++ drivers/media/usb/au0828/au0828-video.c | 76 ++++++++++++++++++++++++++++----- drivers/media/usb/au0828/au0828.h | 3 +- 3 files changed, 82 insertions(+), 12 deletions(-) diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c index e7ebb5e638be51..02aa6d3edffdfc 100644 --- a/drivers/media/usb/au0828/au0828-core.c +++ b/drivers/media/usb/au0828/au0828-core.c @@ -153,11 +153,26 @@ static void au0828_usb_release(struct au0828_dev *dev) } #ifdef CONFIG_VIDEO_AU0828_V4L2 + +static void au0828_usb_v4l2_media_release(struct au0828_dev *dev) +{ +#ifdef CONFIG_MEDIA_CONTROLLER + int i; + + for (i = 0; i < AU0828_MAX_INPUT; i++) { + if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED) + return; + media_device_unregister_entity(&dev->input_ent[i]); + } +#endif +} + static void au0828_usb_v4l2_release(struct v4l2_device *v4l2_dev) { struct au0828_dev *dev = container_of(v4l2_dev, struct au0828_dev, v4l2_dev); + au0828_usb_v4l2_media_release(dev); v4l2_ctrl_handler_free(&dev->v4l2_ctrl_hdl); v4l2_device_unregister(&dev->v4l2_dev); au0828_usb_release(dev); diff --git a/drivers/media/usb/au0828/au0828-video.c b/drivers/media/usb/au0828/au0828-video.c index 97df879c419964..75f2e02908f472 100644 --- a/drivers/media/usb/au0828/au0828-video.c +++ b/drivers/media/usb/au0828/au0828-video.c @@ -1795,6 +1795,69 @@ static int au0828_vb2_setup(struct au0828_dev *dev) return 0; } +static void au0828_analog_create_entities(struct au0828_dev *dev) +{ +#if defined(CONFIG_MEDIA_CONTROLLER) + static const char * const inames[] = { + [AU0828_VMUX_COMPOSITE] = "Composite", + [AU0828_VMUX_SVIDEO] = "S-Video", + [AU0828_VMUX_CABLE] = "Cable TV", + [AU0828_VMUX_TELEVISION] = "Television", + [AU0828_VMUX_DVB] = "DVB", + [AU0828_VMUX_DEBUG] = "tv debug" + }; + int ret, i; + + /* Initialize Video and VBI pads */ + dev->video_pad.flags = MEDIA_PAD_FL_SINK; + ret = media_entity_init(&dev->vdev.entity, 1, &dev->video_pad); + if (ret < 0) + pr_err("failed to initialize video media entity!\n"); + + dev->vbi_pad.flags = MEDIA_PAD_FL_SINK; + ret = media_entity_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad); + if (ret < 0) + pr_err("failed to initialize vbi media entity!\n"); + + /* Create entities for each input connector */ + for (i = 0; i < AU0828_MAX_INPUT; i++) { + struct media_entity *ent = &dev->input_ent[i]; + + if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED) + break; + + ent->name = inames[AUVI_INPUT(i).type]; + ent->flags = MEDIA_ENT_FL_CONNECTOR; + dev->input_pad[i].flags = MEDIA_PAD_FL_SOURCE; + + switch (AUVI_INPUT(i).type) { + case AU0828_VMUX_COMPOSITE: + ent->type = MEDIA_ENT_T_CONN_COMPOSITE; + break; + case AU0828_VMUX_SVIDEO: + ent->type = MEDIA_ENT_T_CONN_SVIDEO; + break; + case AU0828_VMUX_CABLE: + case AU0828_VMUX_TELEVISION: + case AU0828_VMUX_DVB: + ent->type = MEDIA_ENT_T_CONN_RF; + break; + default: /* AU0828_VMUX_DEBUG */ + ent->type = MEDIA_ENT_T_CONN_TEST; + break; + } + + ret = media_entity_init(ent, 1, &dev->input_pad[i]); + if (ret < 0) + pr_err("failed to initialize input pad[%d]!\n", i); + + ret = media_device_register_entity(dev->media_dev, ent); + if (ret < 0) + pr_err("failed to register input entity %d!\n", i); + } +#endif +} + /**************************************************************************/ int au0828_analog_register(struct au0828_dev *dev, @@ -1883,17 +1946,8 @@ int au0828_analog_register(struct au0828_dev *dev, dev->vbi_dev.queue->lock = &dev->vb_vbi_queue_lock; strcpy(dev->vbi_dev.name, "au0828a vbi"); -#if defined(CONFIG_MEDIA_CONTROLLER) - dev->video_pad.flags = MEDIA_PAD_FL_SINK; - ret = media_entity_init(&dev->vdev.entity, 1, &dev->video_pad); - if (ret < 0) - pr_err("failed to initialize video media entity!\n"); - - dev->vbi_pad.flags = MEDIA_PAD_FL_SINK; - ret = media_entity_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad); - if (ret < 0) - pr_err("failed to initialize vbi media entity!\n"); -#endif + /* Init entities at the Media Controller */ + au0828_analog_create_entities(dev); /* initialize videobuf2 stuff */ retval = au0828_vb2_setup(dev); diff --git a/drivers/media/usb/au0828/au0828.h b/drivers/media/usb/au0828/au0828.h index 3577b931157b4c..8276072bc55ac8 100644 --- a/drivers/media/usb/au0828/au0828.h +++ b/drivers/media/usb/au0828/au0828.h @@ -94,7 +94,6 @@ struct au0828_board { unsigned char has_ir_i2c:1; unsigned char has_analog:1; struct au0828_input input[AU0828_MAX_INPUT]; - }; struct au0828_dvb { @@ -282,6 +281,8 @@ struct au0828_dev { struct media_device *media_dev; struct media_pad video_pad, vbi_pad; struct media_entity *decoder; + struct media_entity input_ent[AU0828_MAX_INPUT]; + struct media_pad input_pad[AU0828_MAX_INPUT]; #endif }; -- cgit 1.2.3-korg From 28b6ba1106b5864e6bdd1b75840ccf5b1ca3d1b7 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 31 Aug 2015 13:23:28 -0300 Subject: [media] au0828: Create connector links Now that connectors are entities, we need to represent the connector links. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/au0828/au0828-core.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c index 02aa6d3edffdfc..0d77e9cc303b4d 100644 --- a/drivers/media/usb/au0828/au0828-core.c +++ b/drivers/media/usb/au0828/au0828-core.c @@ -259,6 +259,7 @@ static void au0828_create_media_graph(struct au0828_dev *dev) struct media_device *mdev = dev->media_dev; struct media_entity *entity; struct media_entity *tuner = NULL, *decoder = NULL; + int i; if (!mdev) return; @@ -276,6 +277,7 @@ static void au0828_create_media_graph(struct au0828_dev *dev) /* Analog setup, using tuner as a link */ + /* Something bad happened! */ if (!decoder) return; @@ -286,6 +288,30 @@ static void au0828_create_media_graph(struct au0828_dev *dev) MEDIA_LNK_FL_ENABLED); media_create_pad_link(decoder, 2, &dev->vbi_dev.entity, 0, MEDIA_LNK_FL_ENABLED); + + for (i = 0; i < AU0828_MAX_INPUT; i++) { + struct media_entity *ent = &dev->input_ent[i]; + + if (AUVI_INPUT(i).type == AU0828_VMUX_UNDEFINED) + break; + + switch (AUVI_INPUT(i).type) { + case AU0828_VMUX_CABLE: + case AU0828_VMUX_TELEVISION: + case AU0828_VMUX_DVB: + if (tuner) + media_create_pad_link(ent, 0, tuner, + TUNER_PAD_RF_INPUT, + MEDIA_LNK_FL_ENABLED); + break; + case AU0828_VMUX_COMPOSITE: + case AU0828_VMUX_SVIDEO: + default: /* AU0828_VMUX_DEBUG */ + /* FIXME: fix the decoder PAD */ + media_create_pad_link(ent, 0, decoder, 0, 0); + break; + } + } #endif } -- cgit 1.2.3-korg From 39d1ebc6092f8266fb788733ca92b8492b1d69f2 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sun, 30 Aug 2015 09:53:57 -0300 Subject: [media] media-device: supress backlinks at G_TOPOLOGY ioctl Due to the graph traversal algorithm currently in usage, we need a copy of all data links. Those backlinks should not be send to userspace, as otherwise, all links there will be duplicated. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 3 +++ drivers/media/media-entity.c | 1 + include/media/media-entity.h | 2 ++ 3 files changed, 6 insertions(+) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index c7d97190a67e3a..30cef8740afaaa 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -333,6 +333,9 @@ static long __media_device_get_topology(struct media_device *mdev, /* Get links and number of links */ i = 0; media_device_for_each_link(link, mdev) { + if (link->is_backlink) + continue; + i++; if (ret || !topo->links) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index d9d42fab22ad28..246d7e65adedbf 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -625,6 +625,7 @@ media_create_pad_link(struct media_entity *source, u16 source_pad, backlink->source = &source->pads[source_pad]; backlink->sink = &sink->pads[sink_pad]; backlink->flags = flags; + backlink->is_backlink = true; /* Initialize graph object embedded at the new link */ media_gobj_init(sink->graph_obj.mdev, MEDIA_GRAPH_LINK, diff --git a/include/media/media-entity.h b/include/media/media-entity.h index fd19aecdcbb642..3b591d72c70335 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -96,6 +96,7 @@ struct media_pipeline { * @reverse: Pointer to the link for the reverse direction of a pad to pad * link. * @flags: Link flags, as defined in uapi/media.h (MEDIA_LNK_FL_*) + * @is_backlink: Indicate if the link is a backlink. */ struct media_link { struct media_gobj graph_obj; @@ -112,6 +113,7 @@ struct media_link { }; struct media_link *reverse; unsigned long flags; + bool is_backlink; }; /** -- cgit 1.2.3-korg From 13f6e8887a1f61764a05a3348476d38071201f08 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 4 Sep 2015 15:39:43 -0300 Subject: [media] v4l2 core: enable all interface links at init Interface links are normally enabled, meaning that the interfaces are bound to the entities. So, any ioctl send to the interface are reflected at the entities managed by the interface. However, when a device is used, other interfaces for the same hardware could be decoupled from the entities linked to them, because the hardware may have some parts busy. That's for example, what happens when an hybrid TV device is in use. If it is streaming analog TV or capturing signals from S-Video/Composite connectors, typically the digital part of the hardware can't be used and vice-versa. This is generally due to some internal hardware or firmware limitation, that it is not easily mapped via data pipelines. What the Kernel drivers do internally is that they decouple the hardware from the interface. So, all changes, if allowed, are done only at some interface cache, but not physically changed at the hardware. The usage is similar to the usage of the MEDIA_LNK_FL_ENABLED on data links. So, let's use the same flag to indicate if either the interface to entity link is bound/enabled or not. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/v4l2-core/v4l2-dev.c | 3 ++- drivers/media/v4l2-core/v4l2-device.c | 2 +- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c index 077cdc92778cd0..d36436582de96b 100644 --- a/drivers/media/v4l2-core/v4l2-dev.c +++ b/drivers/media/v4l2-core/v4l2-dev.c @@ -797,7 +797,8 @@ static int video_register_media_controller(struct video_device *vdev, int type) struct media_link *link; link = media_create_intf_link(&vdev->entity, - &vdev->intf_devnode->intf, 0); + &vdev->intf_devnode->intf, + MEDIA_LNK_FL_ENABLED); if (!link) { media_devnode_remove(vdev->intf_devnode); media_device_unregister_entity(&vdev->entity); diff --git a/drivers/media/v4l2-core/v4l2-device.c b/drivers/media/v4l2-core/v4l2-device.c index 3c87307e56f08e..85f724b53a148b 100644 --- a/drivers/media/v4l2-core/v4l2-device.c +++ b/drivers/media/v4l2-core/v4l2-device.c @@ -265,7 +265,7 @@ int v4l2_device_register_subdev_nodes(struct v4l2_device *v4l2_dev) link = media_create_intf_link(&sd->entity, &vdev->intf_devnode->intf, - 0); + MEDIA_LNK_FL_ENABLED); if (!link) goto clean_up; } -- cgit 1.2.3-korg From 0d3ab8410dcb60aef2104231ba817037b3ba73bd Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 4 Sep 2015 15:33:46 -0300 Subject: [media] dvb core: must check dvb_create_media_graph() If media controller is enabled and mdev is filled, it should ensure that the media graph will be properly initialized. Enforce that. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/common/siano/smsdvb-main.c | 6 +++++- drivers/media/dvb-core/dvbdev.h | 2 +- drivers/media/usb/au0828/au0828-dvb.c | 8 +++++--- drivers/media/usb/cx231xx/cx231xx-dvb.c | 6 +++++- drivers/media/usb/dvb-usb-v2/dvb_usb_core.c | 4 +++- drivers/media/usb/dvb-usb/dvb-usb-dvb.c | 6 ++++-- 6 files changed, 23 insertions(+), 9 deletions(-) diff --git a/drivers/media/common/siano/smsdvb-main.c b/drivers/media/common/siano/smsdvb-main.c index f4305ae800f4c9..ab345490a43add 100644 --- a/drivers/media/common/siano/smsdvb-main.c +++ b/drivers/media/common/siano/smsdvb-main.c @@ -1183,7 +1183,11 @@ static int smsdvb_hotplug(struct smscore_device_t *coredev, if (smsdvb_debugfs_create(client) < 0) pr_info("failed to create debugfs node\n"); - dvb_create_media_graph(&client->adapter); + rc = dvb_create_media_graph(&client->adapter); + if (rc < 0) { + pr_err("dvb_create_media_graph failed %d\n", rc); + goto client_error; + } pr_info("DVB interface registered.\n"); return 0; diff --git a/drivers/media/dvb-core/dvbdev.h b/drivers/media/dvb-core/dvbdev.h index 3840dd62bfeeff..de85ba0f570a81 100644 --- a/drivers/media/dvb-core/dvbdev.h +++ b/drivers/media/dvb-core/dvbdev.h @@ -206,7 +206,7 @@ int dvb_register_device(struct dvb_adapter *adap, void dvb_unregister_device(struct dvb_device *dvbdev); #ifdef CONFIG_MEDIA_CONTROLLER_DVB -int dvb_create_media_graph(struct dvb_adapter *adap); +__must_check int dvb_create_media_graph(struct dvb_adapter *adap); static inline void dvb_register_media_controller(struct dvb_adapter *adap, struct media_device *mdev) { diff --git a/drivers/media/usb/au0828/au0828-dvb.c b/drivers/media/usb/au0828/au0828-dvb.c index c01772c4f9f07e..cd542b49a6c2bd 100644 --- a/drivers/media/usb/au0828/au0828-dvb.c +++ b/drivers/media/usb/au0828/au0828-dvb.c @@ -486,12 +486,14 @@ static int dvb_register(struct au0828_dev *dev) dvb->start_count = 0; dvb->stop_count = 0; -#ifdef CONFIG_MEDIA_CONTROLLER_DVB - dvb_create_media_graph(&dvb->adapter); -#endif + result = dvb_create_media_graph(&dvb->adapter); + if (result < 0) + goto fail_create_graph; return 0; +fail_create_graph: + dvb_net_release(&dvb->net); fail_fe_conn: dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem); fail_fe_mem: diff --git a/drivers/media/usb/cx231xx/cx231xx-dvb.c b/drivers/media/usb/cx231xx/cx231xx-dvb.c index e3594b9fab4a58..b7552d20ebdb55 100644 --- a/drivers/media/usb/cx231xx/cx231xx-dvb.c +++ b/drivers/media/usb/cx231xx/cx231xx-dvb.c @@ -551,10 +551,14 @@ static int register_dvb(struct cx231xx_dvb *dvb, /* register network adapter */ dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx); - dvb_create_media_graph(&dvb->adapter); + result = dvb_create_media_graph(&dvb->adapter); + if (result < 0) + goto fail_create_graph; return 0; +fail_create_graph: + dvb_net_release(&dvb->net); fail_fe_conn: dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem); fail_fe_mem: diff --git a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c index f5df9eaba04fb0..6d3f61f6dc7751 100644 --- a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c +++ b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c @@ -698,7 +698,9 @@ static int dvb_usbv2_adapter_frontend_init(struct dvb_usb_adapter *adap) } } - dvb_create_media_graph(&adap->dvb_adap); + ret = dvb_create_media_graph(&adap->dvb_adap); + if (ret < 0) + goto err_dvb_unregister_frontend; return 0; diff --git a/drivers/media/usb/dvb-usb/dvb-usb-dvb.c b/drivers/media/usb/dvb-usb/dvb-usb-dvb.c index 8a260c854653d5..b51dbdf03f4227 100644 --- a/drivers/media/usb/dvb-usb/dvb-usb-dvb.c +++ b/drivers/media/usb/dvb-usb/dvb-usb-dvb.c @@ -318,10 +318,12 @@ int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap) adap->num_frontends_initialized++; } + if (ret) + return ret; - dvb_create_media_graph(&adap->dvb_adap); + ret = dvb_create_media_graph(&adap->dvb_adap); - return 0; + return ret; } int dvb_usb_adapter_frontend_exit(struct dvb_usb_adapter *adap) -- cgit 1.2.3-korg From 5e5387df0491679fb1210b231173c5279061e9c4 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 4 Sep 2015 15:34:19 -0300 Subject: [media] media-entity: enforce check of interface and links creation Drivers should check if interfaces and interface links were created. Add a must_check for them. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/media/media-entity.h | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 3b591d72c70335..7128d3b0b84852 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -373,14 +373,16 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity, struct media_pipeline *pipe); void media_entity_pipeline_stop(struct media_entity *entity); -struct media_intf_devnode *media_devnode_create(struct media_device *mdev, - u32 type, u32 flags, - u32 major, u32 minor, - gfp_t gfp_flags); +struct media_intf_devnode * +__must_check media_devnode_create(struct media_device *mdev, + u32 type, u32 flags, + u32 major, u32 minor, + gfp_t gfp_flags); void media_devnode_remove(struct media_intf_devnode *devnode); -struct media_link *media_create_intf_link(struct media_entity *entity, - struct media_interface *intf, - u32 flags); +struct media_link * +__must_check media_create_intf_link(struct media_entity *entity, + struct media_interface *intf, + u32 flags); void __media_remove_intf_link(struct media_link *link); void media_remove_intf_link(struct media_link *link); void __media_remove_intf_links(struct media_interface *intf); -- cgit 1.2.3-korg From ab232e46bf01db5c540a00f478853a3572b0b88b Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 4 Sep 2015 16:07:03 -0300 Subject: [media] cx231xx: enforce check for graph creation If the graph creation fails, don't register the device. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/cx231xx/cx231xx-cards.c | 40 ++++++++++++++++++++----------- 1 file changed, 26 insertions(+), 14 deletions(-) diff --git a/drivers/media/usb/cx231xx/cx231xx-cards.c b/drivers/media/usb/cx231xx/cx231xx-cards.c index 29cf0c268b190f..b842bfc799ccb8 100644 --- a/drivers/media/usb/cx231xx/cx231xx-cards.c +++ b/drivers/media/usb/cx231xx/cx231xx-cards.c @@ -1185,8 +1185,6 @@ static void cx231xx_unregister_media_device(struct cx231xx *dev) */ void cx231xx_release_resources(struct cx231xx *dev) { - cx231xx_unregister_media_device(dev); - cx231xx_release_analog_resources(dev); cx231xx_remove_from_devlist(dev); @@ -1199,6 +1197,8 @@ void cx231xx_release_resources(struct cx231xx *dev) /* delete v4l2 device */ v4l2_device_unregister(&dev->v4l2_dev); + cx231xx_unregister_media_device(dev); + usb_put_dev(dev->udev); /* Mark device as unused */ @@ -1237,15 +1237,16 @@ static void cx231xx_media_device_register(struct cx231xx *dev, #endif } -static void cx231xx_create_media_graph(struct cx231xx *dev) +static int cx231xx_create_media_graph(struct cx231xx *dev) { #ifdef CONFIG_MEDIA_CONTROLLER struct media_device *mdev = dev->media_dev; struct media_entity *entity; struct media_entity *tuner = NULL, *decoder = NULL; + int ret; if (!mdev) - return; + return 0; media_device_for_each_entity(entity, mdev) { switch (entity->type) { @@ -1261,16 +1262,24 @@ static void cx231xx_create_media_graph(struct cx231xx *dev) /* Analog setup, using tuner as a link */ if (!decoder) - return; + return 0; - if (tuner) - media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, decoder, 0, - MEDIA_LNK_FL_ENABLED); - media_create_pad_link(decoder, 1, &dev->vdev.entity, 0, - MEDIA_LNK_FL_ENABLED); - media_create_pad_link(decoder, 2, &dev->vbi_dev.entity, 0, - MEDIA_LNK_FL_ENABLED); + if (tuner) { + ret = media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, decoder, 0, + MEDIA_LNK_FL_ENABLED); + if (ret < 0) + return ret; + } + ret = media_create_pad_link(decoder, 1, &dev->vdev.entity, 0, + MEDIA_LNK_FL_ENABLED); + if (ret < 0) + return ret; + ret = media_create_pad_link(decoder, 2, &dev->vbi_dev.entity, 0, + MEDIA_LNK_FL_ENABLED); + if (ret < 0) + return ret; #endif + return 0; } /* @@ -1732,9 +1741,12 @@ static int cx231xx_usb_probe(struct usb_interface *interface, /* load other modules required */ request_modules(dev); - cx231xx_create_media_graph(dev); + retval = cx231xx_create_media_graph(dev); + if (retval < 0) { + cx231xx_release_resources(dev); + } - return 0; + return retval; err_video_alt: /* cx231xx_uninit_dev: */ cx231xx_close_extension(dev); -- cgit 1.2.3-korg From 4e26f3abafa9d0f635e105c8b9021f3b5bae6702 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 4 Sep 2015 16:08:02 -0300 Subject: [media] au0828: enforce check for graph creation If the graph creation fails, don't register the device. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/au0828/au0828-core.c | 58 +++++++++++++++++++++++----------- 1 file changed, 39 insertions(+), 19 deletions(-) diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c index 0d77e9cc303b4d..27679e5cdca1ad 100644 --- a/drivers/media/usb/au0828/au0828-core.c +++ b/drivers/media/usb/au0828/au0828-core.c @@ -172,9 +172,9 @@ static void au0828_usb_v4l2_release(struct v4l2_device *v4l2_dev) struct au0828_dev *dev = container_of(v4l2_dev, struct au0828_dev, v4l2_dev); - au0828_usb_v4l2_media_release(dev); v4l2_ctrl_handler_free(&dev->v4l2_ctrl_hdl); v4l2_device_unregister(&dev->v4l2_dev); + au0828_usb_v4l2_media_release(dev); au0828_usb_release(dev); } #endif @@ -253,16 +253,16 @@ static void au0828_media_device_register(struct au0828_dev *dev, } -static void au0828_create_media_graph(struct au0828_dev *dev) +static int au0828_create_media_graph(struct au0828_dev *dev) { #ifdef CONFIG_MEDIA_CONTROLLER struct media_device *mdev = dev->media_dev; struct media_entity *entity; struct media_entity *tuner = NULL, *decoder = NULL; - int i; + int i, ret; if (!mdev) - return; + return 0; media_device_for_each_entity(entity, mdev) { switch (entity->type) { @@ -279,15 +279,23 @@ static void au0828_create_media_graph(struct au0828_dev *dev) /* Something bad happened! */ if (!decoder) - return; - - if (tuner) - media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, decoder, 0, - MEDIA_LNK_FL_ENABLED); - media_create_pad_link(decoder, 1, &dev->vdev.entity, 0, - MEDIA_LNK_FL_ENABLED); - media_create_pad_link(decoder, 2, &dev->vbi_dev.entity, 0, - MEDIA_LNK_FL_ENABLED); + return -EINVAL; + + if (tuner) { + ret = media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, + decoder, 0, + MEDIA_LNK_FL_ENABLED); + if (ret) + return ret; + } + ret = media_create_pad_link(decoder, 1, &dev->vdev.entity, 0, + MEDIA_LNK_FL_ENABLED); + if (ret) + return ret; + ret = media_create_pad_link(decoder, 2, &dev->vbi_dev.entity, 0, + MEDIA_LNK_FL_ENABLED); + if (ret) + return ret; for (i = 0; i < AU0828_MAX_INPUT; i++) { struct media_entity *ent = &dev->input_ent[i]; @@ -299,20 +307,27 @@ static void au0828_create_media_graph(struct au0828_dev *dev) case AU0828_VMUX_CABLE: case AU0828_VMUX_TELEVISION: case AU0828_VMUX_DVB: - if (tuner) - media_create_pad_link(ent, 0, tuner, - TUNER_PAD_RF_INPUT, - MEDIA_LNK_FL_ENABLED); + if (!tuner) + break; + + ret = media_create_pad_link(ent, 0, tuner, + TUNER_PAD_RF_INPUT, + MEDIA_LNK_FL_ENABLED); + if (ret) + return ret; break; case AU0828_VMUX_COMPOSITE: case AU0828_VMUX_SVIDEO: default: /* AU0828_VMUX_DEBUG */ /* FIXME: fix the decoder PAD */ - media_create_pad_link(ent, 0, decoder, 0, 0); + ret = media_create_pad_link(ent, 0, decoder, 0, 0); + if (ret) + return ret; break; } } #endif + return 0; } static int au0828_usb_probe(struct usb_interface *interface, @@ -427,7 +442,12 @@ static int au0828_usb_probe(struct usb_interface *interface, mutex_unlock(&dev->lock); - au0828_create_media_graph(dev); + retval = au0828_create_media_graph(dev); + if (retval) { + pr_err("%s() au0282_dev_register failed to create graph\n", + __func__); + au0828_usb_disconnect(interface); + } return retval; } -- cgit 1.2.3-korg From 77328043d9e6feb12e53a4fc5485cf664d2878e4 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 4 Sep 2015 16:08:24 -0300 Subject: [media] media-entity: must check media_create_pad_link() Drivers should check if media_create_pad_link() actually worked. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- include/media/media-entity.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 7128d3b0b84852..0c7390d2edaed4 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -351,8 +351,9 @@ int media_entity_init(struct media_entity *entity, u16 num_pads, struct media_pad *pads); void media_entity_cleanup(struct media_entity *entity); -int media_create_pad_link(struct media_entity *source, u16 source_pad, - struct media_entity *sink, u16 sink_pad, u32 flags); +__must_check int media_create_pad_link(struct media_entity *source, + u16 source_pad, struct media_entity *sink, + u16 sink_pad, u32 flags); void __media_entity_remove_links(struct media_entity *entity); void media_entity_remove_links(struct media_entity *entity); -- cgit 1.2.3-korg From 0e576b76f5470a2f8b2287958a2b9a3dd0f56f10 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sun, 6 Sep 2015 09:33:39 -0300 Subject: [media] media-entity.h: rename entity.type to entity.function Entities should have one or more functions. Calling it as a type proofed to not be correct, as an entity could eventually have more than one type. So, rename the field as function. Please notice that this patch doesn't extend support for multiple function entities. Such change will happen when we have real case drivers using it. No functional changes. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- Documentation/video4linux/v4l2-framework.txt | 4 ++-- drivers/media/dvb-core/dvbdev.c | 14 +++++++------- drivers/media/dvb-frontends/au8522_decoder.c | 2 +- drivers/media/i2c/adp1653.c | 2 +- drivers/media/i2c/as3645a.c | 2 +- drivers/media/i2c/cx25840/cx25840-core.c | 2 +- drivers/media/i2c/lm3560.c | 2 +- drivers/media/i2c/lm3646.c | 2 +- drivers/media/i2c/m5mols/m5mols_core.c | 2 +- drivers/media/i2c/noon010pc30.c | 2 +- drivers/media/i2c/ov2659.c | 2 +- drivers/media/i2c/ov9650.c | 2 +- drivers/media/i2c/s5c73m3/s5c73m3-core.c | 4 ++-- drivers/media/i2c/s5k4ecgx.c | 2 +- drivers/media/i2c/s5k5baf.c | 6 +++--- drivers/media/i2c/s5k6aa.c | 2 +- drivers/media/i2c/smiapp/smiapp-core.c | 2 +- drivers/media/media-device.c | 6 +++--- drivers/media/platform/xilinx/xilinx-dma.c | 2 +- drivers/media/usb/au0828/au0828-core.c | 2 +- drivers/media/usb/au0828/au0828-video.c | 8 ++++---- drivers/media/usb/cx231xx/cx231xx-cards.c | 2 +- drivers/media/usb/cx231xx/cx231xx-video.c | 2 +- drivers/media/v4l2-core/tuner-core.c | 2 +- drivers/media/v4l2-core/v4l2-dev.c | 14 +++++++------- drivers/media/v4l2-core/v4l2-flash-led-class.c | 2 +- drivers/media/v4l2-core/v4l2-subdev.c | 6 +++--- include/media/media-entity.h | 9 +++++---- 28 files changed, 55 insertions(+), 54 deletions(-) diff --git a/Documentation/video4linux/v4l2-framework.txt b/Documentation/video4linux/v4l2-framework.txt index 109cc379253443..2e0fc28fa12fee 100644 --- a/Documentation/video4linux/v4l2-framework.txt +++ b/Documentation/video4linux/v4l2-framework.txt @@ -303,8 +303,8 @@ calling media_entity_init(): err = media_entity_init(&sd->entity, npads, pads); The pads array must have been previously initialized. There is no need to -manually set the struct media_entity type and name fields, but the revision -field must be initialized if needed. +manually set the struct media_entity function and name fields, but the +revision field must be initialized if needed. A reference to the entity will be automatically acquired/released when the subdev device node (if any) is opened/closed. diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index bc650c637fc02d..f6fc95d1345b7b 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -242,7 +242,7 @@ static int dvb_create_tsout_entity(struct dvb_device *dvbdev, if (!entity->name) return -ENOMEM; - entity->type = MEDIA_ENT_T_DVB_TSOUT; + entity->function = MEDIA_ENT_T_DVB_TSOUT; pads->flags = MEDIA_PAD_FL_SINK; ret = media_entity_init(entity, 1, pads); @@ -315,18 +315,18 @@ static int dvb_create_media_entity(struct dvb_device *dvbdev, switch (type) { case DVB_DEVICE_FRONTEND: - dvbdev->entity->type = MEDIA_ENT_T_DVB_DEMOD; + dvbdev->entity->function = MEDIA_ENT_T_DVB_DEMOD; dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK; dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE; break; case DVB_DEVICE_DEMUX: - dvbdev->entity->type = MEDIA_ENT_T_DVB_DEMUX; + dvbdev->entity->function = MEDIA_ENT_T_DVB_DEMUX; dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK; for (i = 1; i < npads; i++) dvbdev->pads[i].flags = MEDIA_PAD_FL_SOURCE; break; case DVB_DEVICE_CA: - dvbdev->entity->type = MEDIA_ENT_T_DVB_CA; + dvbdev->entity->function = MEDIA_ENT_T_DVB_CA; dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK; dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE; break; @@ -555,7 +555,7 @@ int dvb_create_media_graph(struct dvb_adapter *adap) return 0; media_device_for_each_entity(entity, mdev) { - switch (entity->type) { + switch (entity->function) { case MEDIA_ENT_T_V4L2_SUBDEV_TUNER: tuner = entity; break; @@ -594,7 +594,7 @@ int dvb_create_media_graph(struct dvb_adapter *adap) /* Create demux links for each ringbuffer/pad */ if (demux) { media_device_for_each_entity(entity, mdev) { - if (entity->type == MEDIA_ENT_T_DVB_TSOUT) { + if (entity->function == MEDIA_ENT_T_DVB_TSOUT) { if (!strncmp(entity->name, DVR_TSOUT, strlen(DVR_TSOUT))) { ret = media_create_pad_link(demux, @@ -639,7 +639,7 @@ int dvb_create_media_graph(struct dvb_adapter *adap) } media_device_for_each_entity(entity, mdev) { - if (entity->type == MEDIA_ENT_T_DVB_TSOUT) { + if (entity->function == MEDIA_ENT_T_DVB_TSOUT) { if (!strcmp(entity->name, DVR_TSOUT)) { link = media_create_intf_link(entity, intf, diff --git a/drivers/media/dvb-frontends/au8522_decoder.c b/drivers/media/dvb-frontends/au8522_decoder.c index 580859c89da176..664ec0dcd02ac4 100644 --- a/drivers/media/dvb-frontends/au8522_decoder.c +++ b/drivers/media/dvb-frontends/au8522_decoder.c @@ -766,7 +766,7 @@ static int au8522_probe(struct i2c_client *client, state->pads[AU8522_PAD_INPUT].flags = MEDIA_PAD_FL_SINK; state->pads[AU8522_PAD_VID_OUT].flags = MEDIA_PAD_FL_SOURCE; state->pads[AU8522_PAD_VBI_OUT].flags = MEDIA_PAD_FL_SOURCE; - sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_DECODER; + sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_DECODER; ret = media_entity_init(&sd->entity, ARRAY_SIZE(state->pads), state->pads); diff --git a/drivers/media/i2c/adp1653.c b/drivers/media/i2c/adp1653.c index 07e46b5b849cfb..9d99182cd1653f 100644 --- a/drivers/media/i2c/adp1653.c +++ b/drivers/media/i2c/adp1653.c @@ -516,7 +516,7 @@ static int adp1653_probe(struct i2c_client *client, if (ret < 0) goto free_and_quit; - flash->subdev.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_FLASH; + flash->subdev.entity.function = MEDIA_ENT_T_V4L2_SUBDEV_FLASH; return 0; diff --git a/drivers/media/i2c/as3645a.c b/drivers/media/i2c/as3645a.c index b83c7fc988aef3..f45108c84f4d19 100644 --- a/drivers/media/i2c/as3645a.c +++ b/drivers/media/i2c/as3645a.c @@ -831,7 +831,7 @@ static int as3645a_probe(struct i2c_client *client, if (ret < 0) goto done; - flash->subdev.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_FLASH; + flash->subdev.entity.function = MEDIA_ENT_T_V4L2_SUBDEV_FLASH; mutex_init(&flash->power_lock); diff --git a/drivers/media/i2c/cx25840/cx25840-core.c b/drivers/media/i2c/cx25840/cx25840-core.c index 022ad5ae886994..73bd05ee2fee60 100644 --- a/drivers/media/i2c/cx25840/cx25840-core.c +++ b/drivers/media/i2c/cx25840/cx25840-core.c @@ -5211,7 +5211,7 @@ static int cx25840_probe(struct i2c_client *client, state->pads[CX25840_PAD_INPUT].flags = MEDIA_PAD_FL_SINK; state->pads[CX25840_PAD_VID_OUT].flags = MEDIA_PAD_FL_SOURCE; state->pads[CX25840_PAD_VBI_OUT].flags = MEDIA_PAD_FL_SOURCE; - sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_DECODER; + sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_DECODER; ret = media_entity_init(&sd->entity, ARRAY_SIZE(state->pads), state->pads); diff --git a/drivers/media/i2c/lm3560.c b/drivers/media/i2c/lm3560.c index 91c1ed27a458a0..aa8b4832a1bc17 100644 --- a/drivers/media/i2c/lm3560.c +++ b/drivers/media/i2c/lm3560.c @@ -368,7 +368,7 @@ static int lm3560_subdev_init(struct lm3560_flash *flash, rval = media_entity_init(&flash->subdev_led[led_no].entity, 0, NULL); if (rval < 0) goto err_out; - flash->subdev_led[led_no].entity.type = MEDIA_ENT_T_V4L2_SUBDEV_FLASH; + flash->subdev_led[led_no].entity.function = MEDIA_ENT_T_V4L2_SUBDEV_FLASH; return rval; diff --git a/drivers/media/i2c/lm3646.c b/drivers/media/i2c/lm3646.c index a037616bbab0e3..a52cc3a6fb5580 100644 --- a/drivers/media/i2c/lm3646.c +++ b/drivers/media/i2c/lm3646.c @@ -285,7 +285,7 @@ static int lm3646_subdev_init(struct lm3646_flash *flash) rval = media_entity_init(&flash->subdev_led.entity, 0, NULL); if (rval < 0) goto err_out; - flash->subdev_led.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_FLASH; + flash->subdev_led.entity.function = MEDIA_ENT_T_V4L2_SUBDEV_FLASH; return rval; err_out: diff --git a/drivers/media/i2c/m5mols/m5mols_core.c b/drivers/media/i2c/m5mols/m5mols_core.c index 0788c1908f9c0c..ae5645fe3a6eda 100644 --- a/drivers/media/i2c/m5mols/m5mols_core.c +++ b/drivers/media/i2c/m5mols/m5mols_core.c @@ -978,7 +978,7 @@ static int m5mols_probe(struct i2c_client *client, ret = media_entity_init(&sd->entity, 1, &info->pad); if (ret < 0) return ret; - sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; init_waitqueue_head(&info->irq_waitq); mutex_init(&info->lock); diff --git a/drivers/media/i2c/noon010pc30.c b/drivers/media/i2c/noon010pc30.c index 2e614ad473f1f0..0226fc6685291b 100644 --- a/drivers/media/i2c/noon010pc30.c +++ b/drivers/media/i2c/noon010pc30.c @@ -779,7 +779,7 @@ static int noon010_probe(struct i2c_client *client, goto np_err; info->pad.flags = MEDIA_PAD_FL_SOURCE; - sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; ret = media_entity_init(&sd->entity, 1, &info->pad); if (ret < 0) goto np_err; diff --git a/drivers/media/i2c/ov2659.c b/drivers/media/i2c/ov2659.c index ea95f854a51959..8a2efe2a24c497 100644 --- a/drivers/media/i2c/ov2659.c +++ b/drivers/media/i2c/ov2659.c @@ -1445,7 +1445,7 @@ static int ov2659_probe(struct i2c_client *client, #if defined(CONFIG_MEDIA_CONTROLLER) ov2659->pad.flags = MEDIA_PAD_FL_SOURCE; - sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; ret = media_entity_init(&sd->entity, 1, &ov2659->pad); if (ret < 0) { v4l2_ctrl_handler_free(&ov2659->ctrls); diff --git a/drivers/media/i2c/ov9650.c b/drivers/media/i2c/ov9650.c index b4c408f2a2b0d8..27c4def7e4fcd0 100644 --- a/drivers/media/i2c/ov9650.c +++ b/drivers/media/i2c/ov9650.c @@ -1500,7 +1500,7 @@ static int ov965x_probe(struct i2c_client *client, return ret; ov965x->pad.flags = MEDIA_PAD_FL_SOURCE; - sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; ret = media_entity_init(&sd->entity, 1, &ov965x->pad); if (ret < 0) return ret; diff --git a/drivers/media/i2c/s5c73m3/s5c73m3-core.c b/drivers/media/i2c/s5c73m3/s5c73m3-core.c index ee7404ee665973..dd48e35ede2807 100644 --- a/drivers/media/i2c/s5c73m3/s5c73m3-core.c +++ b/drivers/media/i2c/s5c73m3/s5c73m3-core.c @@ -1688,7 +1688,7 @@ static int s5c73m3_probe(struct i2c_client *client, state->sensor_pads[S5C73M3_JPEG_PAD].flags = MEDIA_PAD_FL_SOURCE; state->sensor_pads[S5C73M3_ISP_PAD].flags = MEDIA_PAD_FL_SOURCE; - sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; ret = media_entity_init(&sd->entity, S5C73M3_NUM_PADS, state->sensor_pads); @@ -1704,7 +1704,7 @@ static int s5c73m3_probe(struct i2c_client *client, state->oif_pads[OIF_ISP_PAD].flags = MEDIA_PAD_FL_SINK; state->oif_pads[OIF_JPEG_PAD].flags = MEDIA_PAD_FL_SINK; state->oif_pads[OIF_SOURCE_PAD].flags = MEDIA_PAD_FL_SOURCE; - oif_sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN; + oif_sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN; ret = media_entity_init(&oif_sd->entity, OIF_NUM_PADS, state->oif_pads); diff --git a/drivers/media/i2c/s5k4ecgx.c b/drivers/media/i2c/s5k4ecgx.c index 445a89e30949df..026d0874053737 100644 --- a/drivers/media/i2c/s5k4ecgx.c +++ b/drivers/media/i2c/s5k4ecgx.c @@ -961,7 +961,7 @@ static int s5k4ecgx_probe(struct i2c_client *client, sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; priv->pad.flags = MEDIA_PAD_FL_SOURCE; - sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; ret = media_entity_init(&sd->entity, 1, &priv->pad); if (ret) return ret; diff --git a/drivers/media/i2c/s5k5baf.c b/drivers/media/i2c/s5k5baf.c index 3e929858d5be1e..1d47b30953a482 100644 --- a/drivers/media/i2c/s5k5baf.c +++ b/drivers/media/i2c/s5k5baf.c @@ -408,7 +408,7 @@ static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl) static inline bool s5k5baf_is_cis_subdev(struct v4l2_subdev *sd) { - return sd->entity.type == MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + return sd->entity.function == MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; } static inline struct s5k5baf *to_s5k5baf(struct v4l2_subdev *sd) @@ -1904,7 +1904,7 @@ static int s5k5baf_configure_subdevs(struct s5k5baf *state, sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; state->cis_pad.flags = MEDIA_PAD_FL_SOURCE; - sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; ret = media_entity_init(&sd->entity, NUM_CIS_PADS, &state->cis_pad); if (ret < 0) goto err; @@ -1919,7 +1919,7 @@ static int s5k5baf_configure_subdevs(struct s5k5baf *state, state->pads[PAD_CIS].flags = MEDIA_PAD_FL_SINK; state->pads[PAD_OUT].flags = MEDIA_PAD_FL_SOURCE; - sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN; + sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN; ret = media_entity_init(&sd->entity, NUM_ISP_PADS, state->pads); if (!ret) diff --git a/drivers/media/i2c/s5k6aa.c b/drivers/media/i2c/s5k6aa.c index 31be29d250932d..d7244234473e9f 100644 --- a/drivers/media/i2c/s5k6aa.c +++ b/drivers/media/i2c/s5k6aa.c @@ -1577,7 +1577,7 @@ static int s5k6aa_probe(struct i2c_client *client, sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; s5k6aa->pad.flags = MEDIA_PAD_FL_SOURCE; - sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; ret = media_entity_init(&sd->entity, 1, &s5k6aa->pad); if (ret) return ret; diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c index df4f8824c344ba..ef325b653697f5 100644 --- a/drivers/media/i2c/smiapp/smiapp-core.c +++ b/drivers/media/i2c/smiapp/smiapp-core.c @@ -2763,7 +2763,7 @@ static int smiapp_init(struct smiapp_sensor *sensor) dev_dbg(&client->dev, "profile %d\n", sensor->minfo.smiapp_profile); - sensor->pixel_array->sd.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + sensor->pixel_array->sd.entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; /* final steps */ smiapp_read_frame_fmt(sensor); diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 30cef8740afaaa..4f8388423edcec 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -108,7 +108,7 @@ static long media_device_enum_entities(struct media_device *mdev, u_ent.id = media_entity_id(ent); if (ent->name) strlcpy(u_ent.name, ent->name, sizeof(u_ent.name)); - u_ent.type = ent->type; + u_ent.type = ent->function; u_ent.revision = ent->revision; u_ent.flags = ent->flags; u_ent.group_id = ent->group_id; @@ -610,8 +610,8 @@ int __must_check media_device_register_entity(struct media_device *mdev, { int i; - if (entity->type == MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN || - entity->type == MEDIA_ENT_T_UNKNOWN) + if (entity->function == MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN || + entity->function == MEDIA_ENT_T_UNKNOWN) dev_warn(mdev->dev, "Entity type for entity %s was not initialized!\n", entity->name); diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c index b3fb1570b1892d..1f0043f3ec4dd8 100644 --- a/drivers/media/platform/xilinx/xilinx-dma.c +++ b/drivers/media/platform/xilinx/xilinx-dma.c @@ -191,7 +191,7 @@ static int xvip_pipeline_validate(struct xvip_pipeline *pipe, while ((entity = media_entity_graph_walk_next(&graph))) { struct xvip_dma *dma; - if (entity->type != MEDIA_ENT_T_V4L2_VIDEO) + if (entity->function != MEDIA_ENT_T_V4L2_VIDEO) continue; dma = to_xvip_dma(media_entity_to_video_device(entity)); diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c index 27679e5cdca1ad..865d68dc4dc89c 100644 --- a/drivers/media/usb/au0828/au0828-core.c +++ b/drivers/media/usb/au0828/au0828-core.c @@ -265,7 +265,7 @@ static int au0828_create_media_graph(struct au0828_dev *dev) return 0; media_device_for_each_entity(entity, mdev) { - switch (entity->type) { + switch (entity->function) { case MEDIA_ENT_T_V4L2_SUBDEV_TUNER: tuner = entity; break; diff --git a/drivers/media/usb/au0828/au0828-video.c b/drivers/media/usb/au0828/au0828-video.c index 75f2e02908f472..066ba4b7c746e0 100644 --- a/drivers/media/usb/au0828/au0828-video.c +++ b/drivers/media/usb/au0828/au0828-video.c @@ -1832,18 +1832,18 @@ static void au0828_analog_create_entities(struct au0828_dev *dev) switch (AUVI_INPUT(i).type) { case AU0828_VMUX_COMPOSITE: - ent->type = MEDIA_ENT_T_CONN_COMPOSITE; + ent->function = MEDIA_ENT_T_CONN_COMPOSITE; break; case AU0828_VMUX_SVIDEO: - ent->type = MEDIA_ENT_T_CONN_SVIDEO; + ent->function = MEDIA_ENT_T_CONN_SVIDEO; break; case AU0828_VMUX_CABLE: case AU0828_VMUX_TELEVISION: case AU0828_VMUX_DVB: - ent->type = MEDIA_ENT_T_CONN_RF; + ent->function = MEDIA_ENT_T_CONN_RF; break; default: /* AU0828_VMUX_DEBUG */ - ent->type = MEDIA_ENT_T_CONN_TEST; + ent->function = MEDIA_ENT_T_CONN_TEST; break; } diff --git a/drivers/media/usb/cx231xx/cx231xx-cards.c b/drivers/media/usb/cx231xx/cx231xx-cards.c index b842bfc799ccb8..5062c42a694c2e 100644 --- a/drivers/media/usb/cx231xx/cx231xx-cards.c +++ b/drivers/media/usb/cx231xx/cx231xx-cards.c @@ -1249,7 +1249,7 @@ static int cx231xx_create_media_graph(struct cx231xx *dev) return 0; media_device_for_each_entity(entity, mdev) { - switch (entity->type) { + switch (entity->function) { case MEDIA_ENT_T_V4L2_SUBDEV_TUNER: tuner = entity; break; diff --git a/drivers/media/usb/cx231xx/cx231xx-video.c b/drivers/media/usb/cx231xx/cx231xx-video.c index b5eb9f61387257..110359deab37fc 100644 --- a/drivers/media/usb/cx231xx/cx231xx-video.c +++ b/drivers/media/usb/cx231xx/cx231xx-video.c @@ -119,7 +119,7 @@ static int cx231xx_enable_analog_tuner(struct cx231xx *dev) * this should be enough for the actual needs. */ media_device_for_each_entity(entity, mdev) { - if (entity->type == MEDIA_ENT_T_V4L2_SUBDEV_DECODER) { + if (entity->function == MEDIA_ENT_T_V4L2_SUBDEV_DECODER) { decoder = entity; break; } diff --git a/drivers/media/v4l2-core/tuner-core.c b/drivers/media/v4l2-core/tuner-core.c index b90f2a52db9631..e8fc5ec8fc353e 100644 --- a/drivers/media/v4l2-core/tuner-core.c +++ b/drivers/media/v4l2-core/tuner-core.c @@ -698,7 +698,7 @@ register_client: #if defined(CONFIG_MEDIA_CONTROLLER) t->pad[TUNER_PAD_RF_INPUT].flags = MEDIA_PAD_FL_SINK; t->pad[TUNER_PAD_IF_OUTPUT].flags = MEDIA_PAD_FL_SOURCE; - t->sd.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_TUNER; + t->sd.entity.function = MEDIA_ENT_T_V4L2_SUBDEV_TUNER; t->sd.entity.name = t->name; ret = media_entity_init(&t->sd.entity, TUNER_NUM_PADS, &t->pad[0]); diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c index d36436582de96b..965449958e9703 100644 --- a/drivers/media/v4l2-core/v4l2-dev.c +++ b/drivers/media/v4l2-core/v4l2-dev.c @@ -197,7 +197,7 @@ static void v4l2_device_release(struct device *cd) if (v4l2_dev->mdev) { /* Remove interfaces and interface links */ media_devnode_remove(vdev->intf_devnode); - if (vdev->entity.type != MEDIA_ENT_T_UNKNOWN) + if (vdev->entity.function != MEDIA_ENT_T_UNKNOWN) media_device_unregister_entity(&vdev->entity); } #endif @@ -735,20 +735,20 @@ static int video_register_media_controller(struct video_device *vdev, int type) if (!vdev->v4l2_dev->mdev) return 0; - vdev->entity.type = MEDIA_ENT_T_UNKNOWN; + vdev->entity.function = MEDIA_ENT_T_UNKNOWN; switch (type) { case VFL_TYPE_GRABBER: intf_type = MEDIA_INTF_T_V4L_VIDEO; - vdev->entity.type = MEDIA_ENT_T_V4L2_VIDEO; + vdev->entity.function = MEDIA_ENT_T_V4L2_VIDEO; break; case VFL_TYPE_VBI: intf_type = MEDIA_INTF_T_V4L_VBI; - vdev->entity.type = MEDIA_ENT_T_V4L2_VBI; + vdev->entity.function = MEDIA_ENT_T_V4L2_VBI; break; case VFL_TYPE_SDR: intf_type = MEDIA_INTF_T_V4L_SWRADIO; - vdev->entity.type = MEDIA_ENT_T_V4L2_SWRADIO; + vdev->entity.function = MEDIA_ENT_T_V4L2_SWRADIO; break; case VFL_TYPE_RADIO: intf_type = MEDIA_INTF_T_V4L_RADIO; @@ -766,7 +766,7 @@ static int video_register_media_controller(struct video_device *vdev, int type) return 0; } - if (vdev->entity.type != MEDIA_ENT_T_UNKNOWN) { + if (vdev->entity.function != MEDIA_ENT_T_UNKNOWN) { vdev->entity.name = vdev->name; /* Needed just for backward compatibility with legacy MC API */ @@ -793,7 +793,7 @@ static int video_register_media_controller(struct video_device *vdev, int type) return -ENOMEM; } - if (vdev->entity.type != MEDIA_ENT_T_UNKNOWN) { + if (vdev->entity.function != MEDIA_ENT_T_UNKNOWN) { struct media_link *link; link = media_create_intf_link(&vdev->entity, diff --git a/drivers/media/v4l2-core/v4l2-flash-led-class.c b/drivers/media/v4l2-core/v4l2-flash-led-class.c index 34c489fed55e76..cf7b3cb9a37368 100644 --- a/drivers/media/v4l2-core/v4l2-flash-led-class.c +++ b/drivers/media/v4l2-core/v4l2-flash-led-class.c @@ -655,7 +655,7 @@ struct v4l2_flash *v4l2_flash_init( if (ret < 0) return ERR_PTR(ret); - sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_FLASH; + sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_FLASH; ret = v4l2_flash_init_controls(v4l2_flash, config); if (ret < 0) diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index b3bcc8253182b6..b440cb66669c70 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -535,9 +535,9 @@ v4l2_subdev_link_validate_get_format(struct media_pad *pad, return v4l2_subdev_call(sd, pad, get_fmt, NULL, fmt); } - WARN(pad->entity->type != MEDIA_ENT_T_V4L2_VIDEO, + WARN(pad->entity->function != MEDIA_ENT_T_V4L2_VIDEO, "Driver bug! Wrong media entity type 0x%08x, entity %s\n", - pad->entity->type, pad->entity->name); + pad->entity->function, pad->entity->name); return -EINVAL; } @@ -584,7 +584,7 @@ void v4l2_subdev_init(struct v4l2_subdev *sd, const struct v4l2_subdev_ops *ops) sd->host_priv = NULL; #if defined(CONFIG_MEDIA_CONTROLLER) sd->entity.name = sd->name; - sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN; + sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN; #endif } EXPORT_SYMBOL(v4l2_subdev_init); diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 0c7390d2edaed4..70ccd6cf14c1a4 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -152,7 +152,8 @@ struct media_entity_operations { * * @graph_obj: Embedded structure containing the media object common data. * @name: Entity name. - * @type: Entity type, as defined in uapi/media.h (MEDIA_ENT_T_*) + * @function: Entity main function, as defined in uapi/media.h + * (MEDIA_ENT_F_*) * @revision: Entity revision - OBSOLETE - should be removed soon. * @flags: Entity flags, as defined in uapi/media.h (MEDIA_ENT_FL_*) * @group_id: Entity group ID - OBSOLETE - should be removed soon. @@ -179,7 +180,7 @@ struct media_entity_operations { struct media_entity { struct media_gobj graph_obj; /* must be first field in struct */ const char *name; - u32 type; + u32 function; u32 revision; unsigned long flags; u32 group_id; @@ -272,7 +273,7 @@ static inline bool is_media_entity_v4l2_io(struct media_entity *entity) if (!entity) return false; - switch (entity->type) { + switch (entity->function) { case MEDIA_ENT_T_V4L2_VIDEO: case MEDIA_ENT_T_V4L2_VBI: case MEDIA_ENT_T_V4L2_SWRADIO: @@ -287,7 +288,7 @@ static inline bool is_media_entity_v4l2_subdev(struct media_entity *entity) if (!entity) return false; - switch (entity->type) { + switch (entity->function) { case MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN: case MEDIA_ENT_T_V4L2_SUBDEV_SENSOR: case MEDIA_ENT_T_V4L2_SUBDEV_FLASH: -- cgit 1.2.3-korg From d87cdb884486bfa795be99c83a5b3ac4d428ca84 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sun, 6 Sep 2015 10:59:08 -0300 Subject: [media] media-device: export the entity function via new ioctl Now that entities have a main function, expose it via MEDIA_IOC_G_TOPOLOGY ioctl. Please notice that some entities may have secundary functions. Such use case will be addressed later, when we add support for the Media Controller properties. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 1 + include/uapi/linux/media.h | 3 ++- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 4f8388423edcec..83525ac293284a 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -263,6 +263,7 @@ static long __media_device_get_topology(struct media_device *mdev, /* Copy fields to userspace struct if not error */ memset(&uentity, 0, sizeof(uentity)); uentity.id = entity->graph_obj.id; + uentity.function = entity->function; strncpy(uentity.name, entity->name, sizeof(uentity.name)); diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h index f9520225a211b5..290dd5585dc802 100644 --- a/include/uapi/linux/media.h +++ b/include/uapi/linux/media.h @@ -276,7 +276,8 @@ struct media_links_enum { struct media_v2_entity { __u32 id; char name[64]; /* FIXME: move to a property? (RFC says so) */ - __u16 reserved[14]; + __u32 function; /* Main function of the entity */ + __u16 reserved[12]; }; /* Should match the specific fields at media_intf_devnode */ -- cgit 1.2.3-korg From 4ca72efaeffd0d244c44307abc9d4cb11f8ad475 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 10 Dec 2015 17:25:41 -0200 Subject: [media] uapi/media.h: Rename entities types to functions Rename the userspace types from MEDIA_ENT_T_ to MEDIA_ENT_F_ and add the backward compatibility bits. The changes at the .c files was generated by the following coccinelle script: @@ @@ -MEDIA_ENT_T_UNKNOWN +MEDIA_ENT_F_UNKNOWN @@ @@ -MEDIA_ENT_T_DVB_BASE +MEDIA_ENT_F_DVB_BASE @@ @@ -MEDIA_ENT_T_V4L2_BASE +MEDIA_ENT_F_V4L2_BASE @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_BASE +MEDIA_ENT_F_V4L2_SUBDEV_BASE @@ @@ -MEDIA_ENT_T_CONNECTOR_BASE +MEDIA_ENT_F_CONNECTOR_BASE @@ @@ -MEDIA_ENT_T_V4L2_VIDEO +MEDIA_ENT_F_IO_V4L @@ @@ -MEDIA_ENT_T_V4L2_VBI +MEDIA_ENT_F_IO_VBI @@ @@ -MEDIA_ENT_T_V4L2_SWRADIO +MEDIA_ENT_F_IO_SWRADIO @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN +MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN @@ @@ -MEDIA_ENT_T_CONN_RF +MEDIA_ENT_F_CONN_RF @@ @@ -MEDIA_ENT_T_CONN_SVIDEO +MEDIA_ENT_F_CONN_SVIDEO @@ @@ -MEDIA_ENT_T_CONN_COMPOSITE +MEDIA_ENT_F_CONN_COMPOSITE @@ @@ -MEDIA_ENT_T_CONN_TEST +MEDIA_ENT_F_CONN_TEST @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_SENSOR +MEDIA_ENT_F_CAM_SENSOR @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_FLASH +MEDIA_ENT_F_FLASH @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_LENS +MEDIA_ENT_F_LENS @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_DECODER +MEDIA_ENT_F_ATV_DECODER @@ @@ -MEDIA_ENT_T_V4L2_SUBDEV_TUNER +MEDIA_ENT_F_TUNER @@ @@ -MEDIA_ENT_T_DVB_DEMOD +MEDIA_ENT_F_DTV_DEMOD @@ @@ -MEDIA_ENT_T_DVB_DEMUX +MEDIA_ENT_F_TS_DEMUX @@ @@ -MEDIA_ENT_T_DVB_TSOUT +MEDIA_ENT_F_IO_DTV @@ @@ -MEDIA_ENT_T_DVB_CA +MEDIA_ENT_F_DTV_CA @@ @@ -MEDIA_ENT_T_DVB_NET_DECAP +MEDIA_ENT_F_DTV_NET_DECAP Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-core/dvbdev.c | 20 ++-- drivers/media/dvb-frontends/au8522_decoder.c | 2 +- drivers/media/i2c/adp1653.c | 2 +- drivers/media/i2c/adv7180.c | 2 +- drivers/media/i2c/as3645a.c | 2 +- drivers/media/i2c/cx25840/cx25840-core.c | 2 +- drivers/media/i2c/lm3560.c | 2 +- drivers/media/i2c/lm3646.c | 2 +- drivers/media/i2c/m5mols/m5mols_core.c | 2 +- drivers/media/i2c/noon010pc30.c | 2 +- drivers/media/i2c/ov2659.c | 2 +- drivers/media/i2c/ov9650.c | 2 +- drivers/media/i2c/s5c73m3/s5c73m3-core.c | 4 +- drivers/media/i2c/s5k4ecgx.c | 2 +- drivers/media/i2c/s5k5baf.c | 6 +- drivers/media/i2c/s5k6aa.c | 2 +- drivers/media/i2c/smiapp/smiapp-core.c | 2 +- drivers/media/i2c/tvp514x.c | 2 +- drivers/media/i2c/tvp7002.c | 2 +- drivers/media/media-device.c | 4 +- drivers/media/platform/xilinx/xilinx-dma.c | 2 +- drivers/media/usb/au0828/au0828-core.c | 4 +- drivers/media/usb/au0828/au0828-video.c | 8 +- drivers/media/usb/cx231xx/cx231xx-cards.c | 4 +- drivers/media/usb/cx231xx/cx231xx-video.c | 2 +- drivers/media/v4l2-core/tuner-core.c | 2 +- drivers/media/v4l2-core/v4l2-dev.c | 14 +-- drivers/media/v4l2-core/v4l2-flash-led-class.c | 2 +- drivers/media/v4l2-core/v4l2-subdev.c | 4 +- include/media/media-entity.h | 18 ++-- include/uapi/linux/media.h | 122 +++++++++++++------------ 31 files changed, 127 insertions(+), 121 deletions(-) diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index f6fc95d1345b7b..f64e8b3fb68702 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -242,7 +242,7 @@ static int dvb_create_tsout_entity(struct dvb_device *dvbdev, if (!entity->name) return -ENOMEM; - entity->function = MEDIA_ENT_T_DVB_TSOUT; + entity->function = MEDIA_ENT_F_IO_DTV; pads->flags = MEDIA_PAD_FL_SINK; ret = media_entity_init(entity, 1, pads); @@ -315,18 +315,18 @@ static int dvb_create_media_entity(struct dvb_device *dvbdev, switch (type) { case DVB_DEVICE_FRONTEND: - dvbdev->entity->function = MEDIA_ENT_T_DVB_DEMOD; + dvbdev->entity->function = MEDIA_ENT_F_DTV_DEMOD; dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK; dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE; break; case DVB_DEVICE_DEMUX: - dvbdev->entity->function = MEDIA_ENT_T_DVB_DEMUX; + dvbdev->entity->function = MEDIA_ENT_F_TS_DEMUX; dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK; for (i = 1; i < npads; i++) dvbdev->pads[i].flags = MEDIA_PAD_FL_SOURCE; break; case DVB_DEVICE_CA: - dvbdev->entity->function = MEDIA_ENT_T_DVB_CA; + dvbdev->entity->function = MEDIA_ENT_F_DTV_CA; dvbdev->pads[0].flags = MEDIA_PAD_FL_SINK; dvbdev->pads[1].flags = MEDIA_PAD_FL_SOURCE; break; @@ -556,16 +556,16 @@ int dvb_create_media_graph(struct dvb_adapter *adap) media_device_for_each_entity(entity, mdev) { switch (entity->function) { - case MEDIA_ENT_T_V4L2_SUBDEV_TUNER: + case MEDIA_ENT_F_TUNER: tuner = entity; break; - case MEDIA_ENT_T_DVB_DEMOD: + case MEDIA_ENT_F_DTV_DEMOD: demod = entity; break; - case MEDIA_ENT_T_DVB_DEMUX: + case MEDIA_ENT_F_TS_DEMUX: demux = entity; break; - case MEDIA_ENT_T_DVB_CA: + case MEDIA_ENT_F_DTV_CA: ca = entity; break; } @@ -594,7 +594,7 @@ int dvb_create_media_graph(struct dvb_adapter *adap) /* Create demux links for each ringbuffer/pad */ if (demux) { media_device_for_each_entity(entity, mdev) { - if (entity->function == MEDIA_ENT_T_DVB_TSOUT) { + if (entity->function == MEDIA_ENT_F_IO_DTV) { if (!strncmp(entity->name, DVR_TSOUT, strlen(DVR_TSOUT))) { ret = media_create_pad_link(demux, @@ -639,7 +639,7 @@ int dvb_create_media_graph(struct dvb_adapter *adap) } media_device_for_each_entity(entity, mdev) { - if (entity->function == MEDIA_ENT_T_DVB_TSOUT) { + if (entity->function == MEDIA_ENT_F_IO_DTV) { if (!strcmp(entity->name, DVR_TSOUT)) { link = media_create_intf_link(entity, intf, diff --git a/drivers/media/dvb-frontends/au8522_decoder.c b/drivers/media/dvb-frontends/au8522_decoder.c index 664ec0dcd02ac4..464a2beca30d70 100644 --- a/drivers/media/dvb-frontends/au8522_decoder.c +++ b/drivers/media/dvb-frontends/au8522_decoder.c @@ -766,7 +766,7 @@ static int au8522_probe(struct i2c_client *client, state->pads[AU8522_PAD_INPUT].flags = MEDIA_PAD_FL_SINK; state->pads[AU8522_PAD_VID_OUT].flags = MEDIA_PAD_FL_SOURCE; state->pads[AU8522_PAD_VBI_OUT].flags = MEDIA_PAD_FL_SOURCE; - sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_DECODER; + sd->entity.function = MEDIA_ENT_F_ATV_DECODER; ret = media_entity_init(&sd->entity, ARRAY_SIZE(state->pads), state->pads); diff --git a/drivers/media/i2c/adp1653.c b/drivers/media/i2c/adp1653.c index 9d99182cd1653f..7150f35d593547 100644 --- a/drivers/media/i2c/adp1653.c +++ b/drivers/media/i2c/adp1653.c @@ -516,7 +516,7 @@ static int adp1653_probe(struct i2c_client *client, if (ret < 0) goto free_and_quit; - flash->subdev.entity.function = MEDIA_ENT_T_V4L2_SUBDEV_FLASH; + flash->subdev.entity.function = MEDIA_ENT_F_FLASH; return 0; diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c index 0fca8677014c90..2ebe9efdfc1b0d 100644 --- a/drivers/media/i2c/adv7180.c +++ b/drivers/media/i2c/adv7180.c @@ -1213,7 +1213,7 @@ static int adv7180_probe(struct i2c_client *client, goto err_unregister_vpp_client; state->pad.flags = MEDIA_PAD_FL_SOURCE; - sd->entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER; + sd->entity.flags |= MEDIA_ENT_F_ATV_DECODER; ret = media_entity_init(&sd->entity, 1, &state->pad); if (ret) goto err_free_ctrl; diff --git a/drivers/media/i2c/as3645a.c b/drivers/media/i2c/as3645a.c index f45108c84f4d19..b1bc4d0f76f242 100644 --- a/drivers/media/i2c/as3645a.c +++ b/drivers/media/i2c/as3645a.c @@ -831,7 +831,7 @@ static int as3645a_probe(struct i2c_client *client, if (ret < 0) goto done; - flash->subdev.entity.function = MEDIA_ENT_T_V4L2_SUBDEV_FLASH; + flash->subdev.entity.function = MEDIA_ENT_F_FLASH; mutex_init(&flash->power_lock); diff --git a/drivers/media/i2c/cx25840/cx25840-core.c b/drivers/media/i2c/cx25840/cx25840-core.c index 73bd05ee2fee60..4d975aa5be36fe 100644 --- a/drivers/media/i2c/cx25840/cx25840-core.c +++ b/drivers/media/i2c/cx25840/cx25840-core.c @@ -5211,7 +5211,7 @@ static int cx25840_probe(struct i2c_client *client, state->pads[CX25840_PAD_INPUT].flags = MEDIA_PAD_FL_SINK; state->pads[CX25840_PAD_VID_OUT].flags = MEDIA_PAD_FL_SOURCE; state->pads[CX25840_PAD_VBI_OUT].flags = MEDIA_PAD_FL_SOURCE; - sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_DECODER; + sd->entity.function = MEDIA_ENT_F_ATV_DECODER; ret = media_entity_init(&sd->entity, ARRAY_SIZE(state->pads), state->pads); diff --git a/drivers/media/i2c/lm3560.c b/drivers/media/i2c/lm3560.c index aa8b4832a1bc17..98266f707ea007 100644 --- a/drivers/media/i2c/lm3560.c +++ b/drivers/media/i2c/lm3560.c @@ -368,7 +368,7 @@ static int lm3560_subdev_init(struct lm3560_flash *flash, rval = media_entity_init(&flash->subdev_led[led_no].entity, 0, NULL); if (rval < 0) goto err_out; - flash->subdev_led[led_no].entity.function = MEDIA_ENT_T_V4L2_SUBDEV_FLASH; + flash->subdev_led[led_no].entity.function = MEDIA_ENT_F_FLASH; return rval; diff --git a/drivers/media/i2c/lm3646.c b/drivers/media/i2c/lm3646.c index a52cc3a6fb5580..ba5ee0d7a78e8b 100644 --- a/drivers/media/i2c/lm3646.c +++ b/drivers/media/i2c/lm3646.c @@ -285,7 +285,7 @@ static int lm3646_subdev_init(struct lm3646_flash *flash) rval = media_entity_init(&flash->subdev_led.entity, 0, NULL); if (rval < 0) goto err_out; - flash->subdev_led.entity.function = MEDIA_ENT_T_V4L2_SUBDEV_FLASH; + flash->subdev_led.entity.function = MEDIA_ENT_F_FLASH; return rval; err_out: diff --git a/drivers/media/i2c/m5mols/m5mols_core.c b/drivers/media/i2c/m5mols/m5mols_core.c index ae5645fe3a6eda..bec5cea23b65e2 100644 --- a/drivers/media/i2c/m5mols/m5mols_core.c +++ b/drivers/media/i2c/m5mols/m5mols_core.c @@ -978,7 +978,7 @@ static int m5mols_probe(struct i2c_client *client, ret = media_entity_init(&sd->entity, 1, &info->pad); if (ret < 0) return ret; - sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; init_waitqueue_head(&info->irq_waitq); mutex_init(&info->lock); diff --git a/drivers/media/i2c/noon010pc30.c b/drivers/media/i2c/noon010pc30.c index 0226fc6685291b..47ea3f79eacc4c 100644 --- a/drivers/media/i2c/noon010pc30.c +++ b/drivers/media/i2c/noon010pc30.c @@ -779,7 +779,7 @@ static int noon010_probe(struct i2c_client *client, goto np_err; info->pad.flags = MEDIA_PAD_FL_SOURCE; - sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; ret = media_entity_init(&sd->entity, 1, &info->pad); if (ret < 0) goto np_err; diff --git a/drivers/media/i2c/ov2659.c b/drivers/media/i2c/ov2659.c index 8a2efe2a24c497..cf8e71610248dd 100644 --- a/drivers/media/i2c/ov2659.c +++ b/drivers/media/i2c/ov2659.c @@ -1445,7 +1445,7 @@ static int ov2659_probe(struct i2c_client *client, #if defined(CONFIG_MEDIA_CONTROLLER) ov2659->pad.flags = MEDIA_PAD_FL_SOURCE; - sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; ret = media_entity_init(&sd->entity, 1, &ov2659->pad); if (ret < 0) { v4l2_ctrl_handler_free(&ov2659->ctrls); diff --git a/drivers/media/i2c/ov9650.c b/drivers/media/i2c/ov9650.c index 27c4def7e4fcd0..adb4aab45c109a 100644 --- a/drivers/media/i2c/ov9650.c +++ b/drivers/media/i2c/ov9650.c @@ -1500,7 +1500,7 @@ static int ov965x_probe(struct i2c_client *client, return ret; ov965x->pad.flags = MEDIA_PAD_FL_SOURCE; - sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; ret = media_entity_init(&sd->entity, 1, &ov965x->pad); if (ret < 0) return ret; diff --git a/drivers/media/i2c/s5c73m3/s5c73m3-core.c b/drivers/media/i2c/s5c73m3/s5c73m3-core.c index dd48e35ede2807..3d578f2ce7b2f4 100644 --- a/drivers/media/i2c/s5c73m3/s5c73m3-core.c +++ b/drivers/media/i2c/s5c73m3/s5c73m3-core.c @@ -1688,7 +1688,7 @@ static int s5c73m3_probe(struct i2c_client *client, state->sensor_pads[S5C73M3_JPEG_PAD].flags = MEDIA_PAD_FL_SOURCE; state->sensor_pads[S5C73M3_ISP_PAD].flags = MEDIA_PAD_FL_SOURCE; - sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; ret = media_entity_init(&sd->entity, S5C73M3_NUM_PADS, state->sensor_pads); @@ -1704,7 +1704,7 @@ static int s5c73m3_probe(struct i2c_client *client, state->oif_pads[OIF_ISP_PAD].flags = MEDIA_PAD_FL_SINK; state->oif_pads[OIF_JPEG_PAD].flags = MEDIA_PAD_FL_SINK; state->oif_pads[OIF_SOURCE_PAD].flags = MEDIA_PAD_FL_SOURCE; - oif_sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN; + oif_sd->entity.function = MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN; ret = media_entity_init(&oif_sd->entity, OIF_NUM_PADS, state->oif_pads); diff --git a/drivers/media/i2c/s5k4ecgx.c b/drivers/media/i2c/s5k4ecgx.c index 026d0874053737..bacec84e773f61 100644 --- a/drivers/media/i2c/s5k4ecgx.c +++ b/drivers/media/i2c/s5k4ecgx.c @@ -961,7 +961,7 @@ static int s5k4ecgx_probe(struct i2c_client *client, sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; priv->pad.flags = MEDIA_PAD_FL_SOURCE; - sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; ret = media_entity_init(&sd->entity, 1, &priv->pad); if (ret) return ret; diff --git a/drivers/media/i2c/s5k5baf.c b/drivers/media/i2c/s5k5baf.c index 1d47b30953a482..564938ab2abd9b 100644 --- a/drivers/media/i2c/s5k5baf.c +++ b/drivers/media/i2c/s5k5baf.c @@ -408,7 +408,7 @@ static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl) static inline bool s5k5baf_is_cis_subdev(struct v4l2_subdev *sd) { - return sd->entity.function == MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + return sd->entity.function == MEDIA_ENT_F_CAM_SENSOR; } static inline struct s5k5baf *to_s5k5baf(struct v4l2_subdev *sd) @@ -1904,7 +1904,7 @@ static int s5k5baf_configure_subdevs(struct s5k5baf *state, sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; state->cis_pad.flags = MEDIA_PAD_FL_SOURCE; - sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; ret = media_entity_init(&sd->entity, NUM_CIS_PADS, &state->cis_pad); if (ret < 0) goto err; @@ -1919,7 +1919,7 @@ static int s5k5baf_configure_subdevs(struct s5k5baf *state, state->pads[PAD_CIS].flags = MEDIA_PAD_FL_SINK; state->pads[PAD_OUT].flags = MEDIA_PAD_FL_SOURCE; - sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN; + sd->entity.function = MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN; ret = media_entity_init(&sd->entity, NUM_ISP_PADS, state->pads); if (!ret) diff --git a/drivers/media/i2c/s5k6aa.c b/drivers/media/i2c/s5k6aa.c index d7244234473e9f..d71d104441bd43 100644 --- a/drivers/media/i2c/s5k6aa.c +++ b/drivers/media/i2c/s5k6aa.c @@ -1577,7 +1577,7 @@ static int s5k6aa_probe(struct i2c_client *client, sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; s5k6aa->pad.flags = MEDIA_PAD_FL_SOURCE; - sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; ret = media_entity_init(&sd->entity, 1, &s5k6aa->pad); if (ret) return ret; diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c index ef325b653697f5..3eaa69ee341b20 100644 --- a/drivers/media/i2c/smiapp/smiapp-core.c +++ b/drivers/media/i2c/smiapp/smiapp-core.c @@ -2763,7 +2763,7 @@ static int smiapp_init(struct smiapp_sensor *sensor) dev_dbg(&client->dev, "profile %d\n", sensor->minfo.smiapp_profile); - sensor->pixel_array->sd.entity.function = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR; + sensor->pixel_array->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; /* final steps */ smiapp_read_frame_fmt(sensor); diff --git a/drivers/media/i2c/tvp514x.c b/drivers/media/i2c/tvp514x.c index 11e426dbe89197..455dd4e6a1dad0 100644 --- a/drivers/media/i2c/tvp514x.c +++ b/drivers/media/i2c/tvp514x.c @@ -1095,7 +1095,7 @@ tvp514x_probe(struct i2c_client *client, const struct i2c_device_id *id) #if defined(CONFIG_MEDIA_CONTROLLER) decoder->pad.flags = MEDIA_PAD_FL_SOURCE; decoder->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; - decoder->sd.entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER; + decoder->sd.entity.flags |= MEDIA_ENT_F_ATV_DECODER; ret = media_entity_init(&decoder->sd.entity, 1, &decoder->pad); if (ret < 0) { diff --git a/drivers/media/i2c/tvp7002.c b/drivers/media/i2c/tvp7002.c index a5ee2b8df4294a..216a07956fe9ef 100644 --- a/drivers/media/i2c/tvp7002.c +++ b/drivers/media/i2c/tvp7002.c @@ -1012,7 +1012,7 @@ static int tvp7002_probe(struct i2c_client *c, const struct i2c_device_id *id) #if defined(CONFIG_MEDIA_CONTROLLER) device->pad.flags = MEDIA_PAD_FL_SOURCE; device->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; - device->sd.entity.flags |= MEDIA_ENT_T_V4L2_SUBDEV_DECODER; + device->sd.entity.flags |= MEDIA_ENT_F_ATV_DECODER; error = media_entity_init(&device->sd.entity, 1, &device->pad); if (error < 0) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 83525ac293284a..f177d50c7a446c 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -611,8 +611,8 @@ int __must_check media_device_register_entity(struct media_device *mdev, { int i; - if (entity->function == MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN || - entity->function == MEDIA_ENT_T_UNKNOWN) + if (entity->function == MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN || + entity->function == MEDIA_ENT_F_UNKNOWN) dev_warn(mdev->dev, "Entity type for entity %s was not initialized!\n", entity->name); diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c index 1f0043f3ec4dd8..b69c9630114da0 100644 --- a/drivers/media/platform/xilinx/xilinx-dma.c +++ b/drivers/media/platform/xilinx/xilinx-dma.c @@ -191,7 +191,7 @@ static int xvip_pipeline_validate(struct xvip_pipeline *pipe, while ((entity = media_entity_graph_walk_next(&graph))) { struct xvip_dma *dma; - if (entity->function != MEDIA_ENT_T_V4L2_VIDEO) + if (entity->function != MEDIA_ENT_F_IO_V4L) continue; dma = to_xvip_dma(media_entity_to_video_device(entity)); diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c index 865d68dc4dc89c..1b207fa16a55a0 100644 --- a/drivers/media/usb/au0828/au0828-core.c +++ b/drivers/media/usb/au0828/au0828-core.c @@ -266,10 +266,10 @@ static int au0828_create_media_graph(struct au0828_dev *dev) media_device_for_each_entity(entity, mdev) { switch (entity->function) { - case MEDIA_ENT_T_V4L2_SUBDEV_TUNER: + case MEDIA_ENT_F_TUNER: tuner = entity; break; - case MEDIA_ENT_T_V4L2_SUBDEV_DECODER: + case MEDIA_ENT_F_ATV_DECODER: decoder = entity; break; } diff --git a/drivers/media/usb/au0828/au0828-video.c b/drivers/media/usb/au0828/au0828-video.c index 066ba4b7c746e0..839361c035ff3c 100644 --- a/drivers/media/usb/au0828/au0828-video.c +++ b/drivers/media/usb/au0828/au0828-video.c @@ -1832,18 +1832,18 @@ static void au0828_analog_create_entities(struct au0828_dev *dev) switch (AUVI_INPUT(i).type) { case AU0828_VMUX_COMPOSITE: - ent->function = MEDIA_ENT_T_CONN_COMPOSITE; + ent->function = MEDIA_ENT_F_CONN_COMPOSITE; break; case AU0828_VMUX_SVIDEO: - ent->function = MEDIA_ENT_T_CONN_SVIDEO; + ent->function = MEDIA_ENT_F_CONN_SVIDEO; break; case AU0828_VMUX_CABLE: case AU0828_VMUX_TELEVISION: case AU0828_VMUX_DVB: - ent->function = MEDIA_ENT_T_CONN_RF; + ent->function = MEDIA_ENT_F_CONN_RF; break; default: /* AU0828_VMUX_DEBUG */ - ent->function = MEDIA_ENT_T_CONN_TEST; + ent->function = MEDIA_ENT_F_CONN_TEST; break; } diff --git a/drivers/media/usb/cx231xx/cx231xx-cards.c b/drivers/media/usb/cx231xx/cx231xx-cards.c index 5062c42a694c2e..0e1efc59ff58dd 100644 --- a/drivers/media/usb/cx231xx/cx231xx-cards.c +++ b/drivers/media/usb/cx231xx/cx231xx-cards.c @@ -1250,10 +1250,10 @@ static int cx231xx_create_media_graph(struct cx231xx *dev) media_device_for_each_entity(entity, mdev) { switch (entity->function) { - case MEDIA_ENT_T_V4L2_SUBDEV_TUNER: + case MEDIA_ENT_F_TUNER: tuner = entity; break; - case MEDIA_ENT_T_V4L2_SUBDEV_DECODER: + case MEDIA_ENT_F_ATV_DECODER: decoder = entity; break; } diff --git a/drivers/media/usb/cx231xx/cx231xx-video.c b/drivers/media/usb/cx231xx/cx231xx-video.c index 110359deab37fc..905ccd7cbc6da1 100644 --- a/drivers/media/usb/cx231xx/cx231xx-video.c +++ b/drivers/media/usb/cx231xx/cx231xx-video.c @@ -119,7 +119,7 @@ static int cx231xx_enable_analog_tuner(struct cx231xx *dev) * this should be enough for the actual needs. */ media_device_for_each_entity(entity, mdev) { - if (entity->function == MEDIA_ENT_T_V4L2_SUBDEV_DECODER) { + if (entity->function == MEDIA_ENT_F_ATV_DECODER) { decoder = entity; break; } diff --git a/drivers/media/v4l2-core/tuner-core.c b/drivers/media/v4l2-core/tuner-core.c index e8fc5ec8fc353e..05fc4df61b85fa 100644 --- a/drivers/media/v4l2-core/tuner-core.c +++ b/drivers/media/v4l2-core/tuner-core.c @@ -698,7 +698,7 @@ register_client: #if defined(CONFIG_MEDIA_CONTROLLER) t->pad[TUNER_PAD_RF_INPUT].flags = MEDIA_PAD_FL_SINK; t->pad[TUNER_PAD_IF_OUTPUT].flags = MEDIA_PAD_FL_SOURCE; - t->sd.entity.function = MEDIA_ENT_T_V4L2_SUBDEV_TUNER; + t->sd.entity.function = MEDIA_ENT_F_TUNER; t->sd.entity.name = t->name; ret = media_entity_init(&t->sd.entity, TUNER_NUM_PADS, &t->pad[0]); diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c index 965449958e9703..ed96642c27bf74 100644 --- a/drivers/media/v4l2-core/v4l2-dev.c +++ b/drivers/media/v4l2-core/v4l2-dev.c @@ -197,7 +197,7 @@ static void v4l2_device_release(struct device *cd) if (v4l2_dev->mdev) { /* Remove interfaces and interface links */ media_devnode_remove(vdev->intf_devnode); - if (vdev->entity.function != MEDIA_ENT_T_UNKNOWN) + if (vdev->entity.function != MEDIA_ENT_F_UNKNOWN) media_device_unregister_entity(&vdev->entity); } #endif @@ -735,20 +735,20 @@ static int video_register_media_controller(struct video_device *vdev, int type) if (!vdev->v4l2_dev->mdev) return 0; - vdev->entity.function = MEDIA_ENT_T_UNKNOWN; + vdev->entity.function = MEDIA_ENT_F_UNKNOWN; switch (type) { case VFL_TYPE_GRABBER: intf_type = MEDIA_INTF_T_V4L_VIDEO; - vdev->entity.function = MEDIA_ENT_T_V4L2_VIDEO; + vdev->entity.function = MEDIA_ENT_F_IO_V4L; break; case VFL_TYPE_VBI: intf_type = MEDIA_INTF_T_V4L_VBI; - vdev->entity.function = MEDIA_ENT_T_V4L2_VBI; + vdev->entity.function = MEDIA_ENT_F_IO_VBI; break; case VFL_TYPE_SDR: intf_type = MEDIA_INTF_T_V4L_SWRADIO; - vdev->entity.function = MEDIA_ENT_T_V4L2_SWRADIO; + vdev->entity.function = MEDIA_ENT_F_IO_SWRADIO; break; case VFL_TYPE_RADIO: intf_type = MEDIA_INTF_T_V4L_RADIO; @@ -766,7 +766,7 @@ static int video_register_media_controller(struct video_device *vdev, int type) return 0; } - if (vdev->entity.function != MEDIA_ENT_T_UNKNOWN) { + if (vdev->entity.function != MEDIA_ENT_F_UNKNOWN) { vdev->entity.name = vdev->name; /* Needed just for backward compatibility with legacy MC API */ @@ -793,7 +793,7 @@ static int video_register_media_controller(struct video_device *vdev, int type) return -ENOMEM; } - if (vdev->entity.function != MEDIA_ENT_T_UNKNOWN) { + if (vdev->entity.function != MEDIA_ENT_F_UNKNOWN) { struct media_link *link; link = media_create_intf_link(&vdev->entity, diff --git a/drivers/media/v4l2-core/v4l2-flash-led-class.c b/drivers/media/v4l2-core/v4l2-flash-led-class.c index cf7b3cb9a37368..5c686a24712ba2 100644 --- a/drivers/media/v4l2-core/v4l2-flash-led-class.c +++ b/drivers/media/v4l2-core/v4l2-flash-led-class.c @@ -655,7 +655,7 @@ struct v4l2_flash *v4l2_flash_init( if (ret < 0) return ERR_PTR(ret); - sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_FLASH; + sd->entity.function = MEDIA_ENT_F_FLASH; ret = v4l2_flash_init_controls(v4l2_flash, config); if (ret < 0) diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index b440cb66669c70..d630838031447c 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -535,7 +535,7 @@ v4l2_subdev_link_validate_get_format(struct media_pad *pad, return v4l2_subdev_call(sd, pad, get_fmt, NULL, fmt); } - WARN(pad->entity->function != MEDIA_ENT_T_V4L2_VIDEO, + WARN(pad->entity->function != MEDIA_ENT_F_IO_V4L, "Driver bug! Wrong media entity type 0x%08x, entity %s\n", pad->entity->function, pad->entity->name); @@ -584,7 +584,7 @@ void v4l2_subdev_init(struct v4l2_subdev *sd, const struct v4l2_subdev_ops *ops) sd->host_priv = NULL; #if defined(CONFIG_MEDIA_CONTROLLER) sd->entity.name = sd->name; - sd->entity.function = MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN; + sd->entity.function = MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN; #endif } EXPORT_SYMBOL(v4l2_subdev_init); diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 70ccd6cf14c1a4..df84e8eeb24b78 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -274,9 +274,9 @@ static inline bool is_media_entity_v4l2_io(struct media_entity *entity) return false; switch (entity->function) { - case MEDIA_ENT_T_V4L2_VIDEO: - case MEDIA_ENT_T_V4L2_VBI: - case MEDIA_ENT_T_V4L2_SWRADIO: + case MEDIA_ENT_F_IO_V4L: + case MEDIA_ENT_F_IO_VBI: + case MEDIA_ENT_F_IO_SWRADIO: return true; default: return false; @@ -289,12 +289,12 @@ static inline bool is_media_entity_v4l2_subdev(struct media_entity *entity) return false; switch (entity->function) { - case MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN: - case MEDIA_ENT_T_V4L2_SUBDEV_SENSOR: - case MEDIA_ENT_T_V4L2_SUBDEV_FLASH: - case MEDIA_ENT_T_V4L2_SUBDEV_LENS: - case MEDIA_ENT_T_V4L2_SUBDEV_DECODER: - case MEDIA_ENT_T_V4L2_SUBDEV_TUNER: + case MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN: + case MEDIA_ENT_F_CAM_SENSOR: + case MEDIA_ENT_F_FLASH: + case MEDIA_ENT_F_LENS: + case MEDIA_ENT_F_ATV_DECODER: + case MEDIA_ENT_F_TUNER: return true; default: diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h index 290dd5585dc802..ff6a8010c5200b 100644 --- a/include/uapi/linux/media.h +++ b/include/uapi/linux/media.h @@ -46,87 +46,93 @@ struct media_device_info { * Initial value to be used when a new entity is created * Drivers should change it to something useful */ -#define MEDIA_ENT_T_UNKNOWN 0x00000000 +#define MEDIA_ENT_F_UNKNOWN 0x00000000 /* - * Base numbers for entity types + * Base number ranges for entity functions * - * Please notice that the huge gap of 16 bits for each base is overkill! - * 8 bits is more than enough to avoid starving entity types for each - * subsystem. - * - * However, It is kept this way just to avoid binary breakages with the - * namespace provided on legacy versions of this header. + * NOTE: those ranges and entity function number are phased just to + * make it easier to maintain this file. Userspace should not rely on + * the ranges to identify a group of function types, as newer + * functions can be added with any name within the full u32 range. */ -#define MEDIA_ENT_T_DVB_BASE 0x00000000 -#define MEDIA_ENT_T_V4L2_BASE 0x00010000 -#define MEDIA_ENT_T_V4L2_SUBDEV_BASE 0x00020000 -#define MEDIA_ENT_T_CONNECTOR_BASE 0x00030000 +#define MEDIA_ENT_F_BASE 0x00000000 +#define MEDIA_ENT_F_OLD_BASE 0x00010000 +#define MEDIA_ENT_F_OLD_SUBDEV_BASE 0x00020000 /* - * V4L2 entities - Those are used for DMA (mmap/DMABUF) and - * read()/write() data I/O associated with the V4L2 devnodes. + * DVB entities */ -#define MEDIA_ENT_T_V4L2_VIDEO (MEDIA_ENT_T_V4L2_BASE + 1) - /* - * Please notice that numbers between MEDIA_ENT_T_V4L2_BASE + 2 and - * MEDIA_ENT_T_V4L2_BASE + 4 can't be used, as those values used - * to be declared for FB, ALSA and DVB entities. - * As those values were never actually used in practice, we're just - * adding them as backward compatibility macros and keeping the - * numberspace clean here. This way, we avoid breaking compilation, - * in the case of having some userspace application using the old - * symbols. - */ -#define MEDIA_ENT_T_V4L2_VBI (MEDIA_ENT_T_V4L2_BASE + 5) -#define MEDIA_ENT_T_V4L2_SWRADIO (MEDIA_ENT_T_V4L2_BASE + 6) - -/* V4L2 Sub-device entities */ +#define MEDIA_ENT_F_DTV_DEMOD (MEDIA_ENT_F_BASE + 1) +#define MEDIA_ENT_F_TS_DEMUX (MEDIA_ENT_F_BASE + 2) +#define MEDIA_ENT_F_DTV_CA (MEDIA_ENT_F_BASE + 3) +#define MEDIA_ENT_F_DTV_NET_DECAP (MEDIA_ENT_F_BASE + 4) /* + * Connectors + */ +#define MEDIA_ENT_F_CONN_RF (MEDIA_ENT_F_BASE + 21) +#define MEDIA_ENT_F_CONN_SVIDEO (MEDIA_ENT_F_BASE + 22) +#define MEDIA_ENT_F_CONN_COMPOSITE (MEDIA_ENT_F_BASE + 23) + /* For internal test signal generators and other debug connectors */ +#define MEDIA_ENT_F_CONN_TEST (MEDIA_ENT_F_BASE + 24) + +/* + * I/O entities + */ +#define MEDIA_ENT_F_IO_DTV (MEDIA_ENT_F_BASE + 31) +#define MEDIA_ENT_F_IO_VBI (MEDIA_ENT_F_BASE + 32) +#define MEDIA_ENT_F_IO_SWRADIO (MEDIA_ENT_F_BASE + 33) + +/* + * Don't touch on those. The ranges MEDIA_ENT_F_OLD_BASE and + * MEDIA_ENT_F_OLD_SUBDEV_BASE are kept to keep backward compatibility + * with the legacy v1 API.The number range is out of range by purpose: + * several previously reserved numbers got excluded from this range. + * * Subdevs are initialized with MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN, * in order to preserve backward compatibility. * Drivers should change to the proper subdev type before * registering the entity. */ -#define MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN MEDIA_ENT_T_V4L2_SUBDEV_BASE - -#define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 1) -#define MEDIA_ENT_T_V4L2_SUBDEV_FLASH (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 2) -#define MEDIA_ENT_T_V4L2_SUBDEV_LENS (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 3) - /* A converter of analogue video to its digital representation. */ -#define MEDIA_ENT_T_V4L2_SUBDEV_DECODER (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 4) - /* Tuner entity is actually both V4L2 and DVB subdev */ -#define MEDIA_ENT_T_V4L2_SUBDEV_TUNER (MEDIA_ENT_T_V4L2_SUBDEV_BASE + 5) - -/* DVB entities */ -#define MEDIA_ENT_T_DVB_DEMOD (MEDIA_ENT_T_DVB_BASE + 1) -#define MEDIA_ENT_T_DVB_DEMUX (MEDIA_ENT_T_DVB_BASE + 2) -#define MEDIA_ENT_T_DVB_TSOUT (MEDIA_ENT_T_DVB_BASE + 3) -#define MEDIA_ENT_T_DVB_CA (MEDIA_ENT_T_DVB_BASE + 4) -#define MEDIA_ENT_T_DVB_NET_DECAP (MEDIA_ENT_T_DVB_BASE + 5) - -/* Connectors */ -#define MEDIA_ENT_T_CONN_RF (MEDIA_ENT_T_CONNECTOR_BASE + 1) -#define MEDIA_ENT_T_CONN_SVIDEO (MEDIA_ENT_T_CONNECTOR_BASE + 2) -#define MEDIA_ENT_T_CONN_COMPOSITE (MEDIA_ENT_T_CONNECTOR_BASE + 3) -/* For internal test signal generators and other debug connectors */ -#define MEDIA_ENT_T_CONN_TEST (MEDIA_ENT_T_CONNECTOR_BASE + 4) + +#define MEDIA_ENT_F_IO_V4L (MEDIA_ENT_F_OLD_BASE + 1) + +#define MEDIA_ENT_F_CAM_SENSOR (MEDIA_ENT_F_OLD_SUBDEV_BASE + 1) +#define MEDIA_ENT_F_FLASH (MEDIA_ENT_F_OLD_SUBDEV_BASE + 2) +#define MEDIA_ENT_F_LENS (MEDIA_ENT_F_OLD_SUBDEV_BASE + 3) +#define MEDIA_ENT_F_ATV_DECODER (MEDIA_ENT_F_OLD_SUBDEV_BASE + 4) +#define MEDIA_ENT_F_TUNER (MEDIA_ENT_F_OLD_SUBDEV_BASE + 5) + +#define MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN MEDIA_ENT_F_OLD_SUBDEV_BASE #ifndef __KERNEL__ -/* Legacy symbols used to avoid userspace compilation breakages */ + +/* + * Legacy symbols used to avoid userspace compilation breakages + * + * Those symbols map the entity function into types and should be + * used only on legacy programs for legacy hardware. Don't rely + * on those for MEDIA_IOC_G_TOPOLOGY. + */ #define MEDIA_ENT_TYPE_SHIFT 16 #define MEDIA_ENT_TYPE_MASK 0x00ff0000 #define MEDIA_ENT_SUBTYPE_MASK 0x0000ffff -#define MEDIA_ENT_T_DEVNODE MEDIA_ENT_T_V4L2_BASE -#define MEDIA_ENT_T_V4L2_SUBDEV MEDIA_ENT_T_V4L2_SUBDEV_BASE - -#define MEDIA_ENT_T_DEVNODE_V4L MEDIA_ENT_T_V4L2_VIDEO - +#define MEDIA_ENT_T_DEVNODE MEDIA_ENT_F_OLD_BASE +#define MEDIA_ENT_T_DEVNODE_V4L MEDIA_ENT_F_IO_V4L #define MEDIA_ENT_T_DEVNODE_FB (MEDIA_ENT_T_DEVNODE + 2) #define MEDIA_ENT_T_DEVNODE_ALSA (MEDIA_ENT_T_DEVNODE + 3) #define MEDIA_ENT_T_DEVNODE_DVB (MEDIA_ENT_T_DEVNODE + 4) + +#define MEDIA_ENT_T_UNKNOWN MEDIA_ENT_F_UNKNOWN +#define MEDIA_ENT_T_V4L2_VIDEO MEDIA_ENT_F_IO_V4L +#define MEDIA_ENT_T_V4L2_SUBDEV MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN +#define MEDIA_ENT_T_V4L2_SUBDEV_SENSOR MEDIA_ENT_F_CAM_SENSOR +#define MEDIA_ENT_T_V4L2_SUBDEV_FLASH MEDIA_ENT_F_FLASH +#define MEDIA_ENT_T_V4L2_SUBDEV_LENS MEDIA_ENT_F_LENS +#define MEDIA_ENT_T_V4L2_SUBDEV_DECODER MEDIA_ENT_F_ATV_DECODER +#define MEDIA_ENT_T_V4L2_SUBDEV_TUNER MEDIA_ENT_F_TUNER #endif /* Entity flags */ -- cgit 1.2.3-korg From bd3ed12be1e1262adcb733bcf63e5da4d8772774 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sun, 6 Sep 2015 12:30:43 -0300 Subject: [media] DocBook: update entities documentation Due to the rename, the documentation became outdated. Update it to reflect what's there at media.h. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- .../DocBook/media/v4l/media-ioc-enum-entities.xml | 64 ++++++++++++++-------- 1 file changed, 40 insertions(+), 24 deletions(-) diff --git a/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml b/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml index 13d0b5891fb761..27f8817e7abe96 100644 --- a/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml +++ b/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml @@ -179,56 +179,72 @@ - MEDIA_ENT_T_UNKNOWN and MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN + MEDIA_ENT_F_UNKNOWN and MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN Unknown entity. That generally indicates that a driver didn't initialize properly the entity, with is a Kernel bug - MEDIA_ENT_T_V4L2_VIDEO - V4L video streaming input or output entity + MEDIA_ENT_F_IO_V4L + Data streaming input and/or output entity. - MEDIA_ENT_T_V4L2_VBI + MEDIA_ENT_F_IO_VBI V4L VBI streaming input or output entity - MEDIA_ENT_T_V4L2_SWRADIO + MEDIA_ENT_F_IO_SWRADIO V4L Software Digital Radio (SDR) streaming input or output entity - MEDIA_ENT_T_DVB_DEMOD - DVB demodulator entity + MEDIA_ENT_F_IO_DTV + DVB Digital TV streaming input or output entity - MEDIA_ENT_T_DVB_DEMUX - DVB demux entity. Can be implemented in hardware or in Kernelspace + MEDIA_ENT_F_DTV_DEMOD + Digital TV demodulator entity. - MEDIA_ENT_T_DVB_TSOUT - DVB Transport Stream output entity + MEDIA_ENT_F_MPEG_TS_DEMUX + MPEG Transport stream demux entity. Could be implemented on hardware or in Kernelspace by the Linux DVB subsystem. - MEDIA_ENT_T_DVB_CA - DVB Conditional Access module (CAM) entity + MEDIA_ENT_F_DTV_CA + Digital TV Conditional Access module (CAM) entity - MEDIA_ENT_T_DVB_DEMOD_NET_DECAP - DVB network ULE/MLE de-encapsulation entity. Can be implemented in hardware or in Kernelspace + MEDIA_ENT_F_DTV_NET_DECAP + Digital TV network ULE/MLE desencapsulation entity. Could be implemented on hardware or in Kernelspace - MEDIA_ENT_T_V4L2_SUBDEV_SENSOR - Camera image sensor entity + MEDIA_ENT_F_CONN_RF + Connector for a Radio Frequency (RF) signal. - MEDIA_ENT_T_V4L2_SUBDEV_FLASH - Flash controller entity + MEDIA_ENT_F_CONN_SVIDEO + Connector for a S-Video signal. - MEDIA_ENT_T_V4L2_SUBDEV_LENS - Lens controller entity + MEDIA_ENT_F_CONN_COMPOSITE + Connector for a RGB composite signal. - MEDIA_ENT_T_V4L2_SUBDEV_DECODER + MEDIA_ENT_F_CONN_TEST + Connector for a test generator. + + + MEDIA_ENT_F_CAM_SENSOR + Camera video sensor entity. + + + MEDIA_ENT_F_FLASH + Flash controller entity. + + + MEDIA_ENT_F_LENS + Lens controller entity. + + + MEDIA_ENT_F_ATV_DECODER Analog video decoder, the basic function of the video decoder is to accept analogue video from a wide variety of sources such as broadcast, DVD players, cameras and video cassette recorders, in @@ -238,8 +254,8 @@ signals. - MEDIA_ENT_T_V4L2_SUBDEV_TUNER - Digital TV, analog TV, radio and/or software radio tuner + MEDIA_ENT_F_TUNER + Digital TV, analog TV, radio and/or software radio tuner. -- cgit 1.2.3-korg From 17813e2aa2f745545643df24af8f308bc36a04b0 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sun, 6 Sep 2015 13:28:48 -0300 Subject: [media] dvbdev: move indirect links on dvr/demux to a separate function Cleanup the code a little bit by moving the routine that creates links between DVR and demux to the I/O entitis into a separate function. While here, fix the code to use strncmp() instead of strcmp(). Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-core/dvbdev.c | 50 +++++++++++++++++++++++++---------------- 1 file changed, 31 insertions(+), 19 deletions(-) diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index f64e8b3fb68702..d51a328bdcf98c 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -540,6 +540,28 @@ EXPORT_SYMBOL(dvb_unregister_device); #ifdef CONFIG_MEDIA_CONTROLLER_DVB + +static int dvb_create_io_intf_links(struct dvb_adapter *adap, + struct media_interface *intf, + char *name) +{ + struct media_device *mdev = adap->mdev; + struct media_entity *entity; + struct media_link *link; + + media_device_for_each_entity(entity, mdev) { + if (entity->function == MEDIA_ENT_F_IO_DTV) { + if (strncmp(entity->name, name, strlen(name))) + continue; + link = media_create_intf_link(entity, intf, + MEDIA_LNK_FL_ENABLED); + if (!link) + return -ENOMEM; + } + } + return 0; +} + int dvb_create_media_graph(struct dvb_adapter *adap) { struct media_device *mdev = adap->mdev; @@ -637,25 +659,15 @@ int dvb_create_media_graph(struct dvb_adapter *adap) if (!link) return -ENOMEM; } - - media_device_for_each_entity(entity, mdev) { - if (entity->function == MEDIA_ENT_F_IO_DTV) { - if (!strcmp(entity->name, DVR_TSOUT)) { - link = media_create_intf_link(entity, - intf, - MEDIA_LNK_FL_ENABLED); - if (!link) - return -ENOMEM; - } - if (!strcmp(entity->name, DEMUX_TSOUT)) { - link = media_create_intf_link(entity, - intf, - MEDIA_LNK_FL_ENABLED); - if (!link) - return -ENOMEM; - } - break; - } + if (intf->type == MEDIA_INTF_T_DVB_DVR) { + ret = dvb_create_io_intf_links(adap, intf, DVR_TSOUT); + if (ret) + return ret; + } + if (intf->type == MEDIA_INTF_T_DVB_DEMUX) { + ret = dvb_create_io_intf_links(adap, intf, DEMUX_TSOUT); + if (ret) + return ret; } } return 0; -- cgit 1.2.3-korg From 8ed071426ee48879024c350ae92fc41062039b13 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sun, 6 Sep 2015 13:38:23 -0300 Subject: [media] dvbdev: Don't create indirect links Indirect links are those whose interface indirectly controls other functions. There are two interfaces that have indirect controls at the DVB side: - the network interface, which also controls the demux; - the DVR interface which also controls the demux. One could argue that the frontend control to the tuner is indirect. Well, that's debatable. There's no way to create subdev interfaces for tuner and demod, as those devices are tightly coupled. So, it was decided that just one interface is the best to control both entities, and there's no plan (or easy way) to decouple both. So, the DVB frontend interface should link to both entities. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-core/dvbdev.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index d51a328bdcf98c..cc52c24bff7252 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -637,7 +637,7 @@ int dvb_create_media_graph(struct dvb_adapter *adap) } } - /* Create indirect interface links for FE->tuner, DVR->demux and CA->ca */ + /* Create interface links for FE->tuner, DVR->demux and CA->ca */ media_device_for_each_intf(intf, mdev) { if (intf->type == MEDIA_INTF_T_DVB_CA && ca) { link = media_create_intf_link(ca, intf, @@ -652,13 +652,19 @@ int dvb_create_media_graph(struct dvb_adapter *adap) if (!link) return -ENOMEM; } - +#if 0 + /* + * Indirect link - let's not create yet, as we don't know how + * to handle indirect links, nor if this will + * actually be needed. + */ if (intf->type == MEDIA_INTF_T_DVB_DVR && demux) { link = media_create_intf_link(demux, intf, MEDIA_LNK_FL_ENABLED); if (!link) return -ENOMEM; } +#endif if (intf->type == MEDIA_INTF_T_DVB_DVR) { ret = dvb_create_io_intf_links(adap, intf, DVR_TSOUT); if (ret) -- cgit 1.2.3-korg From 0b3b72df9018c0386293c2f529b91ed17448288a Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 9 Sep 2015 08:19:25 -0300 Subject: [media] media_entity: remove gfp_flags argument We should not be creating device nodes at IRQ contexts. So, the only flags we'll be using will be GFP_KERNEL. Let's remove the gfp_flags, in order to make the interface simpler. If we ever need it, it would be easy to revert those changes. While here, remove an extra blank line. Suggested-by: Sakari Ailus Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-core/dvbdev.c | 3 +-- drivers/media/media-entity.c | 5 ++--- drivers/media/v4l2-core/v4l2-dev.c | 3 +-- include/media/media-entity.h | 4 +--- 4 files changed, 5 insertions(+), 10 deletions(-) diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index cc52c24bff7252..1d4e35693d09d7 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -394,8 +394,7 @@ static int dvb_register_media_device(struct dvb_device *dvbdev, dvbdev->intf_devnode = media_devnode_create(dvbdev->adapter->mdev, intf_type, 0, - DVB_MAJOR, minor, - GFP_KERNEL); + DVB_MAJOR, minor); if (!dvbdev->intf_devnode) return -ENOMEM; diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 246d7e65adedbf..5f61642b2a977a 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -866,12 +866,11 @@ static void media_interface_init(struct media_device *mdev, struct media_intf_devnode *media_devnode_create(struct media_device *mdev, u32 type, u32 flags, - u32 major, u32 minor, - gfp_t gfp_flags) + u32 major, u32 minor) { struct media_intf_devnode *devnode; - devnode = kzalloc(sizeof(*devnode), gfp_flags); + devnode = kzalloc(sizeof(*devnode), GFP_KERNEL); if (!devnode) return NULL; diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c index ed96642c27bf74..d8e5994cccf1a6 100644 --- a/drivers/media/v4l2-core/v4l2-dev.c +++ b/drivers/media/v4l2-core/v4l2-dev.c @@ -786,8 +786,7 @@ static int video_register_media_controller(struct video_device *vdev, int type) vdev->intf_devnode = media_devnode_create(vdev->v4l2_dev->mdev, intf_type, 0, VIDEO_MAJOR, - vdev->minor, - GFP_KERNEL); + vdev->minor); if (!vdev->intf_devnode) { media_device_unregister_entity(&vdev->entity); return -ENOMEM; diff --git a/include/media/media-entity.h b/include/media/media-entity.h index df84e8eeb24b78..cd3f3a77df2d78 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -71,7 +71,6 @@ struct media_gobj { struct list_head list; }; - struct media_pipeline { }; @@ -378,8 +377,7 @@ void media_entity_pipeline_stop(struct media_entity *entity); struct media_intf_devnode * __must_check media_devnode_create(struct media_device *mdev, u32 type, u32 flags, - u32 major, u32 minor, - gfp_t gfp_flags); + u32 major, u32 minor); void media_devnode_remove(struct media_intf_devnode *devnode); struct media_link * __must_check media_create_intf_link(struct media_entity *entity, -- cgit 1.2.3-korg From 9033b1a47038fdba388fc13613de23508dccb075 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 9 Sep 2015 08:23:51 -0300 Subject: [media] media-device: use unsigned ints on some places The entity->num_pads are defined as u16. So, better to use an unsigned int, as this prevents additional warnings when W=2 (or W=1 on some architectures). The "i" counter at __media_device_get_topology() is also a monotonic counter that should never be below zero. So, make it unsigned too. Suggested-by: Sakari Ailus Acked-by: Hans Verkuil Reviewed-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index f177d50c7a446c..3d0a77c1c8998b 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -243,7 +243,8 @@ static long __media_device_get_topology(struct media_device *mdev, struct media_v2_interface uintf; struct media_v2_pad upad; struct media_v2_link ulink; - int ret = 0, i; + unsigned int i; + int ret = 0; topo->topology_version = mdev->topology_version; @@ -609,7 +610,7 @@ EXPORT_SYMBOL_GPL(media_device_unregister); int __must_check media_device_register_entity(struct media_device *mdev, struct media_entity *entity) { - int i; + unsigned int i; if (entity->function == MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN || entity->function == MEDIA_ENT_F_UNKNOWN) @@ -646,10 +647,10 @@ EXPORT_SYMBOL_GPL(media_device_register_entity); */ void media_device_unregister_entity(struct media_entity *entity) { - int i; struct media_device *mdev = entity->graph_obj.mdev; struct media_link *link, *tmp; struct media_interface *intf; + unsigned int i; if (mdev == NULL) return; -- cgit 1.2.3-korg From db141a355d8914fe80c9e4a6c25c686f64d7e905 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Tue, 8 Sep 2015 14:10:56 -0300 Subject: [media] media-entity: init pads on entity init if was registered before If an entity is registered with a media device before is initialized with media_device_register_entity(), the number of pads won't be set so media_device_register_entity() won't create pad objects and add it to the media device pads list. Do this at entity initialization time if the entity was registered before so the graph is complete and correct regardless of the order in which the entities are initialized and registered. Suggested-by: Mauro Carvalho Chehab Signed-off-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 5f61642b2a977a..07f2dc6c2df6b8 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -222,6 +222,7 @@ int media_entity_init(struct media_entity *entity, u16 num_pads, struct media_pad *pads) { + struct media_device *mdev = entity->graph_obj.mdev; unsigned int i; entity->group_id = 0; @@ -230,11 +231,20 @@ media_entity_init(struct media_entity *entity, u16 num_pads, entity->num_pads = num_pads; entity->pads = pads; + if (mdev) + spin_lock(&mdev->lock); + for (i = 0; i < num_pads; i++) { pads[i].entity = entity; pads[i].index = i; + if (mdev) + media_gobj_init(mdev, MEDIA_GRAPH_PAD, + &entity->pads[i].graph_obj); } + if (mdev) + spin_unlock(&mdev->lock); + return 0; } EXPORT_SYMBOL_GPL(media_entity_init); -- cgit 1.2.3-korg From 497e80cdf98ac72aaa1a4860b833920e1ba23aef Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 11 Dec 2015 07:23:09 -0200 Subject: [media] media-device: put headers in alphabetic order It is better to keep the headers in alphabetic order. Suggested-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 3d0a77c1c8998b..61883abaf0955b 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -24,8 +24,8 @@ #include #include #include -#include #include +#include #include #include -- cgit 1.2.3-korg From b83e250833e6c40a9e92935ea6fc125b64792357 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 11 Dec 2015 07:25:01 -0200 Subject: [media] media-device: better name Kernelspace/Userspace links The __media_device_enum_links() copies links definitions from Kernelspace to userspace. It has to work with 3 structs that handle with links. Better name them to: link: Kernelspace internal link representation, of the type media_link; klink_desc: struct media_link_desc pointer to the kernel memory where the data will be filled; ulink_desc: struct media_link_desc pointer to the memory where the data will be copied to userspace. Suggested-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 27 ++++++++++++++------------- 1 file changed, 14 insertions(+), 13 deletions(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 61883abaf0955b..14bd568e2f41dc 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -151,24 +151,25 @@ static long __media_device_enum_links(struct media_device *mdev, } if (links->links) { - struct media_link *ent_link; - struct media_link_desc __user *ulink = links->links; + struct media_link *link; + struct media_link_desc __user *ulink_desc = links->links; - list_for_each_entry(ent_link, &entity->links, list) { - struct media_link_desc link; + list_for_each_entry(link, &entity->links, list) { + struct media_link_desc klink_desc; /* Ignore backlinks. */ - if (ent_link->source->entity != entity) + if (link->source->entity != entity) continue; - memset(&link, 0, sizeof(link)); - media_device_kpad_to_upad(ent_link->source, - &link.source); - media_device_kpad_to_upad(ent_link->sink, - &link.sink); - link.flags = ent_link->flags; - if (copy_to_user(ulink, &link, sizeof(*ulink))) + memset(&klink_desc, 0, sizeof(klink_desc)); + media_device_kpad_to_upad(link->source, + &klink_desc.source); + media_device_kpad_to_upad(link->sink, + &klink_desc.sink); + klink_desc.flags = link->flags; + if (copy_to_user(ulink_desc, &klink_desc, + sizeof(*ulink_desc))) return -EFAULT; - ulink++; + ulink_desc++; } } -- cgit 1.2.3-korg From ab22e77cd3d3073c8cac51b59713ef635678dfbe Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 11 Dec 2015 07:44:40 -0200 Subject: [media] media framework: rename pads init function to media_entity_pads_init() With the MC next gen rework, what's left for media_entity_init() is to just initialize the PADs. However, certain devices, like a FLASH led/light doesn't have any input or output PAD. So, there's no reason why calling media_entity_init() would be mandatory. Also, despite its name, what this function actually does is to initialize the PADs data. So, rename it to media_entity_pads_init() in order to reflect that. The media entity actual init happens during entity register, at media_device_register_entity(). We should move init of num_links and num_backlinks to it. Signed-off-by: Mauro Carvalho Chehab --- Documentation/media-framework.txt | 18 +++++++++++------- Documentation/video4linux/v4l2-framework.txt | 8 ++++---- Documentation/zh_CN/video4linux/v4l2-framework.txt | 8 ++++---- drivers/media/dvb-core/dvbdev.c | 4 ++-- drivers/media/dvb-frontends/au8522_decoder.c | 2 +- drivers/media/i2c/ad9389b.c | 2 +- drivers/media/i2c/adp1653.c | 2 +- drivers/media/i2c/adv7180.c | 2 +- drivers/media/i2c/adv7511.c | 2 +- drivers/media/i2c/adv7604.c | 2 +- drivers/media/i2c/adv7842.c | 2 +- drivers/media/i2c/as3645a.c | 2 +- drivers/media/i2c/cx25840/cx25840-core.c | 2 +- drivers/media/i2c/lm3560.c | 2 +- drivers/media/i2c/lm3646.c | 2 +- drivers/media/i2c/m5mols/m5mols_core.c | 2 +- drivers/media/i2c/mt9m032.c | 2 +- drivers/media/i2c/mt9p031.c | 2 +- drivers/media/i2c/mt9t001.c | 2 +- drivers/media/i2c/mt9v032.c | 2 +- drivers/media/i2c/noon010pc30.c | 2 +- drivers/media/i2c/ov2659.c | 2 +- drivers/media/i2c/ov9650.c | 2 +- drivers/media/i2c/s5c73m3/s5c73m3-core.c | 4 ++-- drivers/media/i2c/s5k4ecgx.c | 2 +- drivers/media/i2c/s5k5baf.c | 4 ++-- drivers/media/i2c/s5k6a3.c | 2 +- drivers/media/i2c/s5k6aa.c | 2 +- drivers/media/i2c/smiapp/smiapp-core.c | 6 +++--- drivers/media/i2c/tc358743.c | 2 +- drivers/media/i2c/tvp514x.c | 2 +- drivers/media/i2c/tvp7002.c | 2 +- drivers/media/media-device.c | 2 ++ drivers/media/media-entity.c | 11 ++++------- drivers/media/platform/exynos4-is/fimc-capture.c | 4 ++-- drivers/media/platform/exynos4-is/fimc-isp-video.c | 2 +- drivers/media/platform/exynos4-is/fimc-isp.c | 2 +- drivers/media/platform/exynos4-is/fimc-lite.c | 4 ++-- drivers/media/platform/exynos4-is/fimc-m2m.c | 2 +- drivers/media/platform/exynos4-is/mipi-csis.c | 2 +- drivers/media/platform/omap3isp/ispccdc.c | 2 +- drivers/media/platform/omap3isp/ispccp2.c | 2 +- drivers/media/platform/omap3isp/ispcsi2.c | 2 +- drivers/media/platform/omap3isp/isppreview.c | 2 +- drivers/media/platform/omap3isp/ispresizer.c | 2 +- drivers/media/platform/omap3isp/ispstat.c | 2 +- drivers/media/platform/omap3isp/ispvideo.c | 2 +- drivers/media/platform/s3c-camif/camif-capture.c | 4 ++-- drivers/media/platform/vsp1/vsp1_entity.c | 2 +- drivers/media/platform/vsp1/vsp1_video.c | 2 +- drivers/media/platform/xilinx/xilinx-dma.c | 2 +- drivers/media/platform/xilinx/xilinx-tpg.c | 2 +- drivers/media/usb/au0828/au0828-video.c | 6 +++--- drivers/media/usb/cx231xx/cx231xx-video.c | 4 ++-- drivers/media/usb/uvc/uvc_entity.c | 4 ++-- drivers/media/v4l2-core/tuner-core.c | 2 +- drivers/media/v4l2-core/v4l2-flash-led-class.c | 2 +- drivers/staging/media/davinci_vpfe/dm365_ipipe.c | 2 +- drivers/staging/media/davinci_vpfe/dm365_ipipeif.c | 2 +- drivers/staging/media/davinci_vpfe/dm365_isif.c | 2 +- drivers/staging/media/davinci_vpfe/dm365_resizer.c | 6 +++--- drivers/staging/media/davinci_vpfe/vpfe_video.c | 2 +- drivers/staging/media/omap4iss/iss_csi2.c | 2 +- drivers/staging/media/omap4iss/iss_ipipe.c | 2 +- drivers/staging/media/omap4iss/iss_ipipeif.c | 2 +- drivers/staging/media/omap4iss/iss_resizer.c | 2 +- drivers/staging/media/omap4iss/iss_video.c | 2 +- include/media/media-entity.h | 2 +- 68 files changed, 102 insertions(+), 99 deletions(-) diff --git a/Documentation/media-framework.txt b/Documentation/media-framework.txt index b424de6c3bb330..7fbfe4bd1f4765 100644 --- a/Documentation/media-framework.txt +++ b/Documentation/media-framework.txt @@ -101,14 +101,18 @@ include/media/media-entity.h. The structure is usually embedded into a higher-level structure, such as a v4l2_subdev or video_device instance, although drivers can allocate entities directly. -Drivers initialize entities by calling +Drivers initialize entity pads by calling - media_entity_init(struct media_entity *entity, u16 num_pads, + media_entity_pads_init(struct media_entity *entity, u16 num_pads, struct media_pad *pads); -The media_entity name, type, flags, revision and group_id fields can be -initialized before or after calling media_entity_init. Entities embedded in -higher-level standard structures can have some of those fields set by the +If no pads are needed, drivers could directly fill entity->num_pads +with 0 and entity->pads with NULL or to call the above function that +will do the same. + +The media_entity name, type, flags, revision and group_id fields should be +initialized before calling media_device_register_entity(). Entities embedded +in higher-level standard structures can have some of those fields set by the higher-level framework. As the number of pads is known in advance, the pads array is not allocated @@ -116,10 +120,10 @@ dynamically but is managed by the entity driver. Most drivers will embed the pads array in a driver-specific structure, avoiding dynamic allocation. Drivers must set the direction of every pad in the pads array before calling -media_entity_init. The function will initialize the other pads fields. +media_entity_pads_init. The function will initialize the other pads fields. Unlike the number of pads, the total number of links isn't always known in -advance by the entity driver. As an initial estimate, media_entity_init +advance by the entity driver. As an initial estimate, media_entity_pads_init pre-allocates a number of links equal to the number of pads. The links array will be reallocated if it grows beyond the initial estimate. diff --git a/Documentation/video4linux/v4l2-framework.txt b/Documentation/video4linux/v4l2-framework.txt index 2e0fc28fa12fee..fa41608ab2b4f4 100644 --- a/Documentation/video4linux/v4l2-framework.txt +++ b/Documentation/video4linux/v4l2-framework.txt @@ -295,12 +295,12 @@ module owner. This is done for you if you use the i2c helper functions. If integration with the media framework is needed, you must initialize the media_entity struct embedded in the v4l2_subdev struct (entity field) by -calling media_entity_init(): +calling media_entity_pads_init(), if the entity has pads: struct media_pad *pads = &my_sd->pads; int err; - err = media_entity_init(&sd->entity, npads, pads); + err = media_entity_pads_init(&sd->entity, npads, pads); The pads array must have been previously initialized. There is no need to manually set the struct media_entity function and name fields, but the @@ -695,12 +695,12 @@ difference is that the inode argument is omitted since it is never used. If integration with the media framework is needed, you must initialize the media_entity struct embedded in the video_device struct (entity field) by -calling media_entity_init(): +calling media_entity_pads_init(): struct media_pad *pad = &my_vdev->pad; int err; - err = media_entity_init(&vdev->entity, 1, pad); + err = media_entity_pads_init(&vdev->entity, 1, pad); The pads array must have been previously initialized. There is no need to manually set the struct media_entity type and name fields. diff --git a/Documentation/zh_CN/video4linux/v4l2-framework.txt b/Documentation/zh_CN/video4linux/v4l2-framework.txt index ff815cb9203185..698660b7f21fd8 100644 --- a/Documentation/zh_CN/video4linux/v4l2-framework.txt +++ b/Documentation/zh_CN/video4linux/v4l2-framework.txt @@ -289,13 +289,13 @@ struct v4l2_subdev_ops { 然后，你必须用一个唯一的名字初始化 subdev->name，并初始化模块的 owner 域。若使用 i2c 辅助函数，这些都会帮你处理好。 -若需同媒体框架整合，你必须调用 media_entity_init() 初始化 v4l2_subdev +若需同媒体框架整合，你必须调用 media_entity_pads_init() 初始化 v4l2_subdev 结构体中的 media_entity 结构体（entity 域）： struct media_pad *pads = &my_sd->pads; int err; - err = media_entity_init(&sd->entity, npads, pads); + err = media_entity_pads_init(&sd->entity, npads, pads); pads 数组必须预先初始化。无须手动设置 media_entity 的 type 和 name 域，但如有必要，revision 域必须初始化。 @@ -596,13 +596,13 @@ void v4l2_disable_ioctl(struct video_device *vdev, unsigned int cmd); v4l2_file_operations 结构体是 file_operations 的一个子集。其主要 区别在于：因 inode 参数从未被使用，它将被忽略。 -如果需要与媒体框架整合，你必须通过调用 media_entity_init() 初始化 +如果需要与媒体框架整合，你必须通过调用 media_entity_pads_init() 初始化 嵌入在 video_device 结构体中的 media_entity（entity 域）结构体： struct media_pad *pad = &my_vdev->pad; int err; - err = media_entity_init(&vdev->entity, 1, pad); + err = media_entity_pads_init(&vdev->entity, 1, pad); pads 数组必须预先初始化。没有必要手动设置 media_entity 的 type 和 name 域。 diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index 1d4e35693d09d7..b56e00817d3fa2 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -245,7 +245,7 @@ static int dvb_create_tsout_entity(struct dvb_device *dvbdev, entity->function = MEDIA_ENT_F_IO_DTV; pads->flags = MEDIA_PAD_FL_SINK; - ret = media_entity_init(entity, 1, pads); + ret = media_entity_pads_init(entity, 1, pads); if (ret < 0) return ret; @@ -340,7 +340,7 @@ static int dvb_create_media_entity(struct dvb_device *dvbdev, } if (npads) { - ret = media_entity_init(dvbdev->entity, npads, dvbdev->pads); + ret = media_entity_pads_init(dvbdev->entity, npads, dvbdev->pads); if (ret) return ret; } diff --git a/drivers/media/dvb-frontends/au8522_decoder.c b/drivers/media/dvb-frontends/au8522_decoder.c index 464a2beca30d70..73612c5353d194 100644 --- a/drivers/media/dvb-frontends/au8522_decoder.c +++ b/drivers/media/dvb-frontends/au8522_decoder.c @@ -768,7 +768,7 @@ static int au8522_probe(struct i2c_client *client, state->pads[AU8522_PAD_VBI_OUT].flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_ATV_DECODER; - ret = media_entity_init(&sd->entity, ARRAY_SIZE(state->pads), + ret = media_entity_pads_init(&sd->entity, ARRAY_SIZE(state->pads), state->pads); if (ret < 0) { v4l_info(client, "failed to initialize media entity!\n"); diff --git a/drivers/media/i2c/ad9389b.c b/drivers/media/i2c/ad9389b.c index a02dc4925707c0..788967dadd2989 100644 --- a/drivers/media/i2c/ad9389b.c +++ b/drivers/media/i2c/ad9389b.c @@ -1158,7 +1158,7 @@ static int ad9389b_probe(struct i2c_client *client, const struct i2c_device_id * state->rgb_quantization_range_ctrl->is_private = true; state->pad.flags = MEDIA_PAD_FL_SINK; - err = media_entity_init(&sd->entity, 1, &state->pad); + err = media_entity_pads_init(&sd->entity, 1, &state->pad); if (err) goto err_hdl; diff --git a/drivers/media/i2c/adp1653.c b/drivers/media/i2c/adp1653.c index 7150f35d593547..7e9cbf757e956b 100644 --- a/drivers/media/i2c/adp1653.c +++ b/drivers/media/i2c/adp1653.c @@ -512,7 +512,7 @@ static int adp1653_probe(struct i2c_client *client, if (ret) goto free_and_quit; - ret = media_entity_init(&flash->subdev.entity, 0, NULL); + ret = media_entity_pads_init(&flash->subdev.entity, 0, NULL); if (ret < 0) goto free_and_quit; diff --git a/drivers/media/i2c/adv7180.c b/drivers/media/i2c/adv7180.c index 2ebe9efdfc1b0d..ff57c1dcb8aff3 100644 --- a/drivers/media/i2c/adv7180.c +++ b/drivers/media/i2c/adv7180.c @@ -1214,7 +1214,7 @@ static int adv7180_probe(struct i2c_client *client, state->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.flags |= MEDIA_ENT_F_ATV_DECODER; - ret = media_entity_init(&sd->entity, 1, &state->pad); + ret = media_entity_pads_init(&sd->entity, 1, &state->pad); if (ret) goto err_free_ctrl; diff --git a/drivers/media/i2c/adv7511.c b/drivers/media/i2c/adv7511.c index cbcf81b1d29e5a..471fd23b5c5c7c 100644 --- a/drivers/media/i2c/adv7511.c +++ b/drivers/media/i2c/adv7511.c @@ -1482,7 +1482,7 @@ static int adv7511_probe(struct i2c_client *client, const struct i2c_device_id * state->rgb_quantization_range_ctrl->is_private = true; state->pad.flags = MEDIA_PAD_FL_SINK; - err = media_entity_init(&sd->entity, 1, &state->pad); + err = media_entity_pads_init(&sd->entity, 1, &state->pad); if (err) goto err_hdl; diff --git a/drivers/media/i2c/adv7604.c b/drivers/media/i2c/adv7604.c index c2df7e8053f3dd..f8dd7505b5294f 100644 --- a/drivers/media/i2c/adv7604.c +++ b/drivers/media/i2c/adv7604.c @@ -3208,7 +3208,7 @@ static int adv76xx_probe(struct i2c_client *client, state->pads[i].flags = MEDIA_PAD_FL_SINK; state->pads[state->source_pad].flags = MEDIA_PAD_FL_SOURCE; - err = media_entity_init(&sd->entity, state->source_pad + 1, + err = media_entity_pads_init(&sd->entity, state->source_pad + 1, state->pads); if (err) goto err_work_queues; diff --git a/drivers/media/i2c/adv7842.c b/drivers/media/i2c/adv7842.c index b5013a937254b5..5fbb788e7b599a 100644 --- a/drivers/media/i2c/adv7842.c +++ b/drivers/media/i2c/adv7842.c @@ -3309,7 +3309,7 @@ static int adv7842_probe(struct i2c_client *client, adv7842_delayed_work_enable_hotplug); state->pad.flags = MEDIA_PAD_FL_SOURCE; - err = media_entity_init(&sd->entity, 1, &state->pad); + err = media_entity_pads_init(&sd->entity, 1, &state->pad); if (err) goto err_work_queues; diff --git a/drivers/media/i2c/as3645a.c b/drivers/media/i2c/as3645a.c index b1bc4d0f76f242..2e90e4094b7960 100644 --- a/drivers/media/i2c/as3645a.c +++ b/drivers/media/i2c/as3645a.c @@ -827,7 +827,7 @@ static int as3645a_probe(struct i2c_client *client, if (ret < 0) goto done; - ret = media_entity_init(&flash->subdev.entity, 0, NULL); + ret = media_entity_pads_init(&flash->subdev.entity, 0, NULL); if (ret < 0) goto done; diff --git a/drivers/media/i2c/cx25840/cx25840-core.c b/drivers/media/i2c/cx25840/cx25840-core.c index 4d975aa5be36fe..07a3e71731441b 100644 --- a/drivers/media/i2c/cx25840/cx25840-core.c +++ b/drivers/media/i2c/cx25840/cx25840-core.c @@ -5213,7 +5213,7 @@ static int cx25840_probe(struct i2c_client *client, state->pads[CX25840_PAD_VBI_OUT].flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_ATV_DECODER; - ret = media_entity_init(&sd->entity, ARRAY_SIZE(state->pads), + ret = media_entity_pads_init(&sd->entity, ARRAY_SIZE(state->pads), state->pads); if (ret < 0) { v4l_info(client, "failed to initialize media entity!\n"); diff --git a/drivers/media/i2c/lm3560.c b/drivers/media/i2c/lm3560.c index 98266f707ea007..251a2aaf98c3b2 100644 --- a/drivers/media/i2c/lm3560.c +++ b/drivers/media/i2c/lm3560.c @@ -365,7 +365,7 @@ static int lm3560_subdev_init(struct lm3560_flash *flash, rval = lm3560_init_controls(flash, led_no); if (rval) goto err_out; - rval = media_entity_init(&flash->subdev_led[led_no].entity, 0, NULL); + rval = media_entity_pads_init(&flash->subdev_led[led_no].entity, 0, NULL); if (rval < 0) goto err_out; flash->subdev_led[led_no].entity.function = MEDIA_ENT_F_FLASH; diff --git a/drivers/media/i2c/lm3646.c b/drivers/media/i2c/lm3646.c index ba5ee0d7a78e8b..7e9967af36ecd3 100644 --- a/drivers/media/i2c/lm3646.c +++ b/drivers/media/i2c/lm3646.c @@ -282,7 +282,7 @@ static int lm3646_subdev_init(struct lm3646_flash *flash) rval = lm3646_init_controls(flash); if (rval) goto err_out; - rval = media_entity_init(&flash->subdev_led.entity, 0, NULL); + rval = media_entity_pads_init(&flash->subdev_led.entity, 0, NULL); if (rval < 0) goto err_out; flash->subdev_led.entity.function = MEDIA_ENT_F_FLASH; diff --git a/drivers/media/i2c/m5mols/m5mols_core.c b/drivers/media/i2c/m5mols/m5mols_core.c index bec5cea23b65e2..acb804bceccbc7 100644 --- a/drivers/media/i2c/m5mols/m5mols_core.c +++ b/drivers/media/i2c/m5mols/m5mols_core.c @@ -975,7 +975,7 @@ static int m5mols_probe(struct i2c_client *client, sd->internal_ops = &m5mols_subdev_internal_ops; info->pad.flags = MEDIA_PAD_FL_SOURCE; - ret = media_entity_init(&sd->entity, 1, &info->pad); + ret = media_entity_pads_init(&sd->entity, 1, &info->pad); if (ret < 0) return ret; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; diff --git a/drivers/media/i2c/mt9m032.c b/drivers/media/i2c/mt9m032.c index a2a450839ca121..da076796999ee6 100644 --- a/drivers/media/i2c/mt9m032.c +++ b/drivers/media/i2c/mt9m032.c @@ -799,7 +799,7 @@ static int mt9m032_probe(struct i2c_client *client, sensor->subdev.ctrl_handler = &sensor->ctrls; sensor->pad.flags = MEDIA_PAD_FL_SOURCE; - ret = media_entity_init(&sensor->subdev.entity, 1, &sensor->pad); + ret = media_entity_pads_init(&sensor->subdev.entity, 1, &sensor->pad); if (ret < 0) goto error_ctrl; diff --git a/drivers/media/i2c/mt9p031.c b/drivers/media/i2c/mt9p031.c index 165f29cddca6d1..237737fec09c15 100644 --- a/drivers/media/i2c/mt9p031.c +++ b/drivers/media/i2c/mt9p031.c @@ -1112,7 +1112,7 @@ static int mt9p031_probe(struct i2c_client *client, mt9p031->subdev.internal_ops = &mt9p031_subdev_internal_ops; mt9p031->pad.flags = MEDIA_PAD_FL_SOURCE; - ret = media_entity_init(&mt9p031->subdev.entity, 1, &mt9p031->pad); + ret = media_entity_pads_init(&mt9p031->subdev.entity, 1, &mt9p031->pad); if (ret < 0) goto done; diff --git a/drivers/media/i2c/mt9t001.c b/drivers/media/i2c/mt9t001.c index 7d3df84651d885..702d562f8e39a2 100644 --- a/drivers/media/i2c/mt9t001.c +++ b/drivers/media/i2c/mt9t001.c @@ -933,7 +933,7 @@ static int mt9t001_probe(struct i2c_client *client, mt9t001->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; mt9t001->pad.flags = MEDIA_PAD_FL_SOURCE; - ret = media_entity_init(&mt9t001->subdev.entity, 1, &mt9t001->pad); + ret = media_entity_pads_init(&mt9t001->subdev.entity, 1, &mt9t001->pad); done: if (ret < 0) { diff --git a/drivers/media/i2c/mt9v032.c b/drivers/media/i2c/mt9v032.c index b4f0f042c6c3b3..2e1d116a64e7b4 100644 --- a/drivers/media/i2c/mt9v032.c +++ b/drivers/media/i2c/mt9v032.c @@ -1046,7 +1046,7 @@ static int mt9v032_probe(struct i2c_client *client, mt9v032->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; mt9v032->pad.flags = MEDIA_PAD_FL_SOURCE; - ret = media_entity_init(&mt9v032->subdev.entity, 1, &mt9v032->pad); + ret = media_entity_pads_init(&mt9v032->subdev.entity, 1, &mt9v032->pad); if (ret < 0) goto err; diff --git a/drivers/media/i2c/noon010pc30.c b/drivers/media/i2c/noon010pc30.c index 47ea3f79eacc4c..30cb90b88d7551 100644 --- a/drivers/media/i2c/noon010pc30.c +++ b/drivers/media/i2c/noon010pc30.c @@ -780,7 +780,7 @@ static int noon010_probe(struct i2c_client *client, info->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; - ret = media_entity_init(&sd->entity, 1, &info->pad); + ret = media_entity_pads_init(&sd->entity, 1, &info->pad); if (ret < 0) goto np_err; diff --git a/drivers/media/i2c/ov2659.c b/drivers/media/i2c/ov2659.c index cf8e71610248dd..02b9a3440557b4 100644 --- a/drivers/media/i2c/ov2659.c +++ b/drivers/media/i2c/ov2659.c @@ -1446,7 +1446,7 @@ static int ov2659_probe(struct i2c_client *client, #if defined(CONFIG_MEDIA_CONTROLLER) ov2659->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; - ret = media_entity_init(&sd->entity, 1, &ov2659->pad); + ret = media_entity_pads_init(&sd->entity, 1, &ov2659->pad); if (ret < 0) { v4l2_ctrl_handler_free(&ov2659->ctrls); return ret; diff --git a/drivers/media/i2c/ov9650.c b/drivers/media/i2c/ov9650.c index adb4aab45c109a..a0b3c9bde53d85 100644 --- a/drivers/media/i2c/ov9650.c +++ b/drivers/media/i2c/ov9650.c @@ -1501,7 +1501,7 @@ static int ov965x_probe(struct i2c_client *client, ov965x->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; - ret = media_entity_init(&sd->entity, 1, &ov965x->pad); + ret = media_entity_pads_init(&sd->entity, 1, &ov965x->pad); if (ret < 0) return ret; diff --git a/drivers/media/i2c/s5c73m3/s5c73m3-core.c b/drivers/media/i2c/s5c73m3/s5c73m3-core.c index 3d578f2ce7b2f4..57b3d27993a40f 100644 --- a/drivers/media/i2c/s5c73m3/s5c73m3-core.c +++ b/drivers/media/i2c/s5c73m3/s5c73m3-core.c @@ -1690,7 +1690,7 @@ static int s5c73m3_probe(struct i2c_client *client, state->sensor_pads[S5C73M3_ISP_PAD].flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; - ret = media_entity_init(&sd->entity, S5C73M3_NUM_PADS, + ret = media_entity_pads_init(&sd->entity, S5C73M3_NUM_PADS, state->sensor_pads); if (ret < 0) return ret; @@ -1706,7 +1706,7 @@ static int s5c73m3_probe(struct i2c_client *client, state->oif_pads[OIF_SOURCE_PAD].flags = MEDIA_PAD_FL_SOURCE; oif_sd->entity.function = MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN; - ret = media_entity_init(&oif_sd->entity, OIF_NUM_PADS, + ret = media_entity_pads_init(&oif_sd->entity, OIF_NUM_PADS, state->oif_pads); if (ret < 0) return ret; diff --git a/drivers/media/i2c/s5k4ecgx.c b/drivers/media/i2c/s5k4ecgx.c index bacec84e773f61..8a0f22da590ffe 100644 --- a/drivers/media/i2c/s5k4ecgx.c +++ b/drivers/media/i2c/s5k4ecgx.c @@ -962,7 +962,7 @@ static int s5k4ecgx_probe(struct i2c_client *client, priv->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; - ret = media_entity_init(&sd->entity, 1, &priv->pad); + ret = media_entity_pads_init(&sd->entity, 1, &priv->pad); if (ret) return ret; diff --git a/drivers/media/i2c/s5k5baf.c b/drivers/media/i2c/s5k5baf.c index 564938ab2abd9b..fc3a5a8e6c9c7e 100644 --- a/drivers/media/i2c/s5k5baf.c +++ b/drivers/media/i2c/s5k5baf.c @@ -1905,7 +1905,7 @@ static int s5k5baf_configure_subdevs(struct s5k5baf *state, state->cis_pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; - ret = media_entity_init(&sd->entity, NUM_CIS_PADS, &state->cis_pad); + ret = media_entity_pads_init(&sd->entity, NUM_CIS_PADS, &state->cis_pad); if (ret < 0) goto err; @@ -1920,7 +1920,7 @@ static int s5k5baf_configure_subdevs(struct s5k5baf *state, state->pads[PAD_CIS].flags = MEDIA_PAD_FL_SINK; state->pads[PAD_OUT].flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN; - ret = media_entity_init(&sd->entity, NUM_ISP_PADS, state->pads); + ret = media_entity_pads_init(&sd->entity, NUM_ISP_PADS, state->pads); if (!ret) return 0; diff --git a/drivers/media/i2c/s5k6a3.c b/drivers/media/i2c/s5k6a3.c index 2434a794478185..b9e43ffa50859c 100644 --- a/drivers/media/i2c/s5k6a3.c +++ b/drivers/media/i2c/s5k6a3.c @@ -333,7 +333,7 @@ static int s5k6a3_probe(struct i2c_client *client, sensor->format.height = S5K6A3_DEFAULT_HEIGHT; sensor->pad.flags = MEDIA_PAD_FL_SOURCE; - ret = media_entity_init(&sd->entity, 1, &sensor->pad); + ret = media_entity_pads_init(&sd->entity, 1, &sensor->pad); if (ret < 0) return ret; diff --git a/drivers/media/i2c/s5k6aa.c b/drivers/media/i2c/s5k6aa.c index d71d104441bd43..faee11383cb70d 100644 --- a/drivers/media/i2c/s5k6aa.c +++ b/drivers/media/i2c/s5k6aa.c @@ -1578,7 +1578,7 @@ static int s5k6aa_probe(struct i2c_client *client, s5k6aa->pad.flags = MEDIA_PAD_FL_SOURCE; sd->entity.function = MEDIA_ENT_F_CAM_SENSOR; - ret = media_entity_init(&sd->entity, 1, &s5k6aa->pad); + ret = media_entity_pads_init(&sd->entity, 1, &s5k6aa->pad); if (ret) return ret; diff --git a/drivers/media/i2c/smiapp/smiapp-core.c b/drivers/media/i2c/smiapp/smiapp-core.c index 3eaa69ee341b20..a215efe7a8bac0 100644 --- a/drivers/media/i2c/smiapp/smiapp-core.c +++ b/drivers/media/i2c/smiapp/smiapp-core.c @@ -2487,11 +2487,11 @@ static int smiapp_register_subdevs(struct smiapp_sensor *sensor) if (!last) continue; - rval = media_entity_init(&this->sd.entity, + rval = media_entity_pads_init(&this->sd.entity, this->npads, this->pads); if (rval) { dev_err(&client->dev, - "media_entity_init failed\n"); + "media_entity_pads_init failed\n"); return rval; } @@ -3077,7 +3077,7 @@ static int smiapp_probe(struct i2c_client *client, sensor->src->sensor = sensor; sensor->src->pads[0].flags = MEDIA_PAD_FL_SOURCE; - rval = media_entity_init(&sensor->src->sd.entity, 2, + rval = media_entity_pads_init(&sensor->src->sd.entity, 2, sensor->src->pads); if (rval < 0) return rval; diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c index 78e5b644d40060..3397eb99c67b02 100644 --- a/drivers/media/i2c/tc358743.c +++ b/drivers/media/i2c/tc358743.c @@ -1889,7 +1889,7 @@ static int tc358743_probe(struct i2c_client *client, } state->pad.flags = MEDIA_PAD_FL_SOURCE; - err = media_entity_init(&sd->entity, 1, &state->pad); + err = media_entity_pads_init(&sd->entity, 1, &state->pad); if (err < 0) goto err_hdl; diff --git a/drivers/media/i2c/tvp514x.c b/drivers/media/i2c/tvp514x.c index 455dd4e6a1dad0..7fa5f1e4fe3798 100644 --- a/drivers/media/i2c/tvp514x.c +++ b/drivers/media/i2c/tvp514x.c @@ -1097,7 +1097,7 @@ tvp514x_probe(struct i2c_client *client, const struct i2c_device_id *id) decoder->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; decoder->sd.entity.flags |= MEDIA_ENT_F_ATV_DECODER; - ret = media_entity_init(&decoder->sd.entity, 1, &decoder->pad); + ret = media_entity_pads_init(&decoder->sd.entity, 1, &decoder->pad); if (ret < 0) { v4l2_err(sd, "%s decoder driver failed to register !!\n", sd->name); diff --git a/drivers/media/i2c/tvp7002.c b/drivers/media/i2c/tvp7002.c index 216a07956fe9ef..83c79fa5f61de1 100644 --- a/drivers/media/i2c/tvp7002.c +++ b/drivers/media/i2c/tvp7002.c @@ -1014,7 +1014,7 @@ static int tvp7002_probe(struct i2c_client *c, const struct i2c_device_id *id) device->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; device->sd.entity.flags |= MEDIA_ENT_F_ATV_DECODER; - error = media_entity_init(&device->sd.entity, 1, &device->pad); + error = media_entity_pads_init(&device->sd.entity, 1, &device->pad); if (error < 0) return error; #endif diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 14bd568e2f41dc..b8cd7733a31c60 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -623,6 +623,8 @@ int __must_check media_device_register_entity(struct media_device *mdev, WARN_ON(entity->graph_obj.mdev != NULL); entity->graph_obj.mdev = mdev; INIT_LIST_HEAD(&entity->links); + entity->num_links = 0; + entity->num_backlinks = 0; spin_lock(&mdev->lock); /* Initialize media_gobj embedded at the entity */ diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 07f2dc6c2df6b8..ef2102ac0c66d9 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -197,7 +197,7 @@ void media_gobj_remove(struct media_gobj *gobj) } /** - * media_entity_init - Initialize a media entity + * media_entity_pads_init - Initialize a media entity * * @num_pads: Total number of sink and source pads. * @pads: Array of 'num_pads' pads. @@ -216,18 +216,15 @@ void media_gobj_remove(struct media_gobj *gobj) * number of allocated elements. * * The pads array is managed by the entity driver and passed to - * media_entity_init() where its pointer will be stored in the entity structure. + * media_entity_pads_init() where its pointer will be stored in the entity structure. */ int -media_entity_init(struct media_entity *entity, u16 num_pads, +media_entity_pads_init(struct media_entity *entity, u16 num_pads, struct media_pad *pads) { struct media_device *mdev = entity->graph_obj.mdev; unsigned int i; - entity->group_id = 0; - entity->num_links = 0; - entity->num_backlinks = 0; entity->num_pads = num_pads; entity->pads = pads; @@ -247,7 +244,7 @@ media_entity_init(struct media_entity *entity, u16 num_pads, return 0; } -EXPORT_SYMBOL_GPL(media_entity_init); +EXPORT_SYMBOL_GPL(media_entity_pads_init); void media_entity_cleanup(struct media_entity *entity) diff --git a/drivers/media/platform/exynos4-is/fimc-capture.c b/drivers/media/platform/exynos4-is/fimc-capture.c index 48a826372d3d56..bf47d3b9cbe77e 100644 --- a/drivers/media/platform/exynos4-is/fimc-capture.c +++ b/drivers/media/platform/exynos4-is/fimc-capture.c @@ -1799,7 +1799,7 @@ static int fimc_register_capture_device(struct fimc_dev *fimc, vid_cap->wb_fmt.code = fmt->mbus_code; vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK; - ret = media_entity_init(&vfd->entity, 1, &vid_cap->vd_pad); + ret = media_entity_pads_init(&vfd->entity, 1, &vid_cap->vd_pad); if (ret) goto err_free_ctx; @@ -1891,7 +1891,7 @@ int fimc_initialize_capture_subdev(struct fimc_dev *fimc) fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_CAM].flags = MEDIA_PAD_FL_SINK; fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK_FIFO].flags = MEDIA_PAD_FL_SINK; fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; - ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM, + ret = media_entity_pads_init(&sd->entity, FIMC_SD_PADS_NUM, fimc->vid_cap.sd_pads); if (ret) return ret; diff --git a/drivers/media/platform/exynos4-is/fimc-isp-video.c b/drivers/media/platform/exynos4-is/fimc-isp-video.c index 9c7794bcf0c320..bf9261eb57a15c 100644 --- a/drivers/media/platform/exynos4-is/fimc-isp-video.c +++ b/drivers/media/platform/exynos4-is/fimc-isp-video.c @@ -616,7 +616,7 @@ int fimc_isp_video_device_register(struct fimc_isp *isp, vdev->lock = &isp->video_lock; iv->pad.flags = MEDIA_PAD_FL_SINK; - ret = media_entity_init(&vdev->entity, 1, &iv->pad); + ret = media_entity_pads_init(&vdev->entity, 1, &iv->pad); if (ret < 0) return ret; diff --git a/drivers/media/platform/exynos4-is/fimc-isp.c b/drivers/media/platform/exynos4-is/fimc-isp.c index f52eebf765c178..293b807020c49e 100644 --- a/drivers/media/platform/exynos4-is/fimc-isp.c +++ b/drivers/media/platform/exynos4-is/fimc-isp.c @@ -708,7 +708,7 @@ int fimc_isp_subdev_create(struct fimc_isp *isp) isp->subdev_pads[FIMC_ISP_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK; isp->subdev_pads[FIMC_ISP_SD_PAD_SRC_FIFO].flags = MEDIA_PAD_FL_SOURCE; isp->subdev_pads[FIMC_ISP_SD_PAD_SRC_DMA].flags = MEDIA_PAD_FL_SOURCE; - ret = media_entity_init(&sd->entity, FIMC_ISP_SD_PADS_NUM, + ret = media_entity_pads_init(&sd->entity, FIMC_ISP_SD_PADS_NUM, isp->subdev_pads); if (ret) return ret; diff --git a/drivers/media/platform/exynos4-is/fimc-lite.c b/drivers/media/platform/exynos4-is/fimc-lite.c index 957cf144a67528..e85649147dc8d9 100644 --- a/drivers/media/platform/exynos4-is/fimc-lite.c +++ b/drivers/media/platform/exynos4-is/fimc-lite.c @@ -1314,7 +1314,7 @@ static int fimc_lite_subdev_registered(struct v4l2_subdev *sd) return ret; fimc->vd_pad.flags = MEDIA_PAD_FL_SINK; - ret = media_entity_init(&vfd->entity, 1, &fimc->vd_pad); + ret = media_entity_pads_init(&vfd->entity, 1, &fimc->vd_pad); if (ret < 0) return ret; @@ -1428,7 +1428,7 @@ static int fimc_lite_create_capture_subdev(struct fimc_lite *fimc) fimc->subdev_pads[FLITE_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK; fimc->subdev_pads[FLITE_SD_PAD_SOURCE_DMA].flags = MEDIA_PAD_FL_SOURCE; fimc->subdev_pads[FLITE_SD_PAD_SOURCE_ISP].flags = MEDIA_PAD_FL_SOURCE; - ret = media_entity_init(&sd->entity, FLITE_SD_PADS_NUM, + ret = media_entity_pads_init(&sd->entity, FLITE_SD_PADS_NUM, fimc->subdev_pads); if (ret) return ret; diff --git a/drivers/media/platform/exynos4-is/fimc-m2m.c b/drivers/media/platform/exynos4-is/fimc-m2m.c index 8ff4e6f76b8489..55ec4c99d484a1 100644 --- a/drivers/media/platform/exynos4-is/fimc-m2m.c +++ b/drivers/media/platform/exynos4-is/fimc-m2m.c @@ -739,7 +739,7 @@ int fimc_register_m2m_device(struct fimc_dev *fimc, return PTR_ERR(fimc->m2m.m2m_dev); } - ret = media_entity_init(&vfd->entity, 0, NULL); + ret = media_entity_pads_init(&vfd->entity, 0, NULL); if (ret) goto err_me; diff --git a/drivers/media/platform/exynos4-is/mipi-csis.c b/drivers/media/platform/exynos4-is/mipi-csis.c index 8847797b0d0b4e..ac5e50e595be83 100644 --- a/drivers/media/platform/exynos4-is/mipi-csis.c +++ b/drivers/media/platform/exynos4-is/mipi-csis.c @@ -866,7 +866,7 @@ static int s5pcsis_probe(struct platform_device *pdev) state->pads[CSIS_PAD_SINK].flags = MEDIA_PAD_FL_SINK; state->pads[CSIS_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; - ret = media_entity_init(&state->sd.entity, + ret = media_entity_pads_init(&state->sd.entity, CSIS_PADS_NUM, state->pads); if (ret < 0) goto e_clkdis; diff --git a/drivers/media/platform/omap3isp/ispccdc.c b/drivers/media/platform/omap3isp/ispccdc.c index f0e530c9818886..dae674cd3f74e3 100644 --- a/drivers/media/platform/omap3isp/ispccdc.c +++ b/drivers/media/platform/omap3isp/ispccdc.c @@ -2655,7 +2655,7 @@ static int ccdc_init_entities(struct isp_ccdc_device *ccdc) pads[CCDC_PAD_SOURCE_OF].flags = MEDIA_PAD_FL_SOURCE; me->ops = &ccdc_media_ops; - ret = media_entity_init(me, CCDC_PADS_NUM, pads); + ret = media_entity_pads_init(me, CCDC_PADS_NUM, pads); if (ret < 0) return ret; diff --git a/drivers/media/platform/omap3isp/ispccp2.c b/drivers/media/platform/omap3isp/ispccp2.c index ae3038e643ccf0..0c790b25f6f9bb 100644 --- a/drivers/media/platform/omap3isp/ispccp2.c +++ b/drivers/media/platform/omap3isp/ispccp2.c @@ -1076,7 +1076,7 @@ static int ccp2_init_entities(struct isp_ccp2_device *ccp2) pads[CCP2_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; me->ops = &ccp2_media_ops; - ret = media_entity_init(me, CCP2_PADS_NUM, pads); + ret = media_entity_pads_init(me, CCP2_PADS_NUM, pads); if (ret < 0) return ret; diff --git a/drivers/media/platform/omap3isp/ispcsi2.c b/drivers/media/platform/omap3isp/ispcsi2.c index b1617f7efdee29..f50f6b305204cb 100644 --- a/drivers/media/platform/omap3isp/ispcsi2.c +++ b/drivers/media/platform/omap3isp/ispcsi2.c @@ -1250,7 +1250,7 @@ static int csi2_init_entities(struct isp_csi2_device *csi2) | MEDIA_PAD_FL_MUST_CONNECT; me->ops = &csi2_media_ops; - ret = media_entity_init(me, CSI2_PADS_NUM, pads); + ret = media_entity_pads_init(me, CSI2_PADS_NUM, pads); if (ret < 0) return ret; diff --git a/drivers/media/platform/omap3isp/isppreview.c b/drivers/media/platform/omap3isp/isppreview.c index cfb2debb02bfef..c300cb7219e9ff 100644 --- a/drivers/media/platform/omap3isp/isppreview.c +++ b/drivers/media/platform/omap3isp/isppreview.c @@ -2287,7 +2287,7 @@ static int preview_init_entities(struct isp_prev_device *prev) pads[PREV_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; me->ops = &preview_media_ops; - ret = media_entity_init(me, PREV_PADS_NUM, pads); + ret = media_entity_pads_init(me, PREV_PADS_NUM, pads); if (ret < 0) return ret; diff --git a/drivers/media/platform/omap3isp/ispresizer.c b/drivers/media/platform/omap3isp/ispresizer.c index e3ecf1787fc47e..cd0a9f6e1fedf8 100644 --- a/drivers/media/platform/omap3isp/ispresizer.c +++ b/drivers/media/platform/omap3isp/ispresizer.c @@ -1733,7 +1733,7 @@ static int resizer_init_entities(struct isp_res_device *res) pads[RESZ_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; me->ops = &resizer_media_ops; - ret = media_entity_init(me, RESZ_PADS_NUM, pads); + ret = media_entity_pads_init(me, RESZ_PADS_NUM, pads); if (ret < 0) return ret; diff --git a/drivers/media/platform/omap3isp/ispstat.c b/drivers/media/platform/omap3isp/ispstat.c index f7a5eee9f11d53..1b9217d3b1b6af 100644 --- a/drivers/media/platform/omap3isp/ispstat.c +++ b/drivers/media/platform/omap3isp/ispstat.c @@ -1028,7 +1028,7 @@ static int isp_stat_init_entities(struct ispstat *stat, const char *name, stat->pad.flags = MEDIA_PAD_FL_SINK | MEDIA_PAD_FL_MUST_CONNECT; me->ops = NULL; - return media_entity_init(me, 1, &stat->pad); + return media_entity_pads_init(me, 1, &stat->pad); } int omap3isp_stat_init(struct ispstat *stat, const char *name, diff --git a/drivers/media/platform/omap3isp/ispvideo.c b/drivers/media/platform/omap3isp/ispvideo.c index 768efd775abca1..1240b06202f048 100644 --- a/drivers/media/platform/omap3isp/ispvideo.c +++ b/drivers/media/platform/omap3isp/ispvideo.c @@ -1368,7 +1368,7 @@ int omap3isp_video_init(struct isp_video *video, const char *name) if (IS_ERR(video->alloc_ctx)) return PTR_ERR(video->alloc_ctx); - ret = media_entity_init(&video->video.entity, 1, &video->pad); + ret = media_entity_pads_init(&video->video.entity, 1, &video->pad); if (ret < 0) { vb2_dma_contig_cleanup_ctx(video->alloc_ctx); return ret; diff --git a/drivers/media/platform/s3c-camif/camif-capture.c b/drivers/media/platform/s3c-camif/camif-capture.c index 05bfa9d08b19e5..bd060ef5d1e1fc 100644 --- a/drivers/media/platform/s3c-camif/camif-capture.c +++ b/drivers/media/platform/s3c-camif/camif-capture.c @@ -1144,7 +1144,7 @@ int s3c_camif_register_video_node(struct camif_dev *camif, int idx) goto err_vd_rel; vp->pad.flags = MEDIA_PAD_FL_SINK; - ret = media_entity_init(&vfd->entity, 1, &vp->pad); + ret = media_entity_pads_init(&vfd->entity, 1, &vp->pad); if (ret) goto err_vd_rel; @@ -1559,7 +1559,7 @@ int s3c_camif_create_subdev(struct camif_dev *camif) camif->pads[CAMIF_SD_PAD_SOURCE_C].flags = MEDIA_PAD_FL_SOURCE; camif->pads[CAMIF_SD_PAD_SOURCE_P].flags = MEDIA_PAD_FL_SOURCE; - ret = media_entity_init(&sd->entity, CAMIF_SD_PADS_NUM, + ret = media_entity_pads_init(&sd->entity, CAMIF_SD_PADS_NUM, camif->pads); if (ret) return ret; diff --git a/drivers/media/platform/vsp1/vsp1_entity.c b/drivers/media/platform/vsp1/vsp1_entity.c index 619942ff2058f4..d7308530952fdf 100644 --- a/drivers/media/platform/vsp1/vsp1_entity.c +++ b/drivers/media/platform/vsp1/vsp1_entity.c @@ -219,7 +219,7 @@ int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity, entity->pads[num_pads - 1].flags = MEDIA_PAD_FL_SOURCE; /* Initialize the media entity. */ - return media_entity_init(&entity->subdev.entity, num_pads, + return media_entity_pads_init(&entity->subdev.entity, num_pads, entity->pads); } diff --git a/drivers/media/platform/vsp1/vsp1_video.c b/drivers/media/platform/vsp1/vsp1_video.c index 024d10de3740dc..e3304303dce3f2 100644 --- a/drivers/media/platform/vsp1/vsp1_video.c +++ b/drivers/media/platform/vsp1/vsp1_video.c @@ -1192,7 +1192,7 @@ int vsp1_video_init(struct vsp1_video *video, struct vsp1_entity *rwpf) video->pipe.state = VSP1_PIPELINE_STOPPED; /* Initialize the media entity... */ - ret = media_entity_init(&video->video.entity, 1, &video->pad); + ret = media_entity_pads_init(&video->video.entity, 1, &video->pad); if (ret < 0) return ret; diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c index b69c9630114da0..0181ff402a5ab9 100644 --- a/drivers/media/platform/xilinx/xilinx-dma.c +++ b/drivers/media/platform/xilinx/xilinx-dma.c @@ -675,7 +675,7 @@ int xvip_dma_init(struct xvip_composite_device *xdev, struct xvip_dma *dma, dma->pad.flags = type == V4L2_BUF_TYPE_VIDEO_CAPTURE ? MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE; - ret = media_entity_init(&dma->video.entity, 1, &dma->pad); + ret = media_entity_pads_init(&dma->video.entity, 1, &dma->pad); if (ret < 0) goto error; diff --git a/drivers/media/platform/xilinx/xilinx-tpg.c b/drivers/media/platform/xilinx/xilinx-tpg.c index c09ca513a9dc5d..2ec1f6c4b27421 100644 --- a/drivers/media/platform/xilinx/xilinx-tpg.c +++ b/drivers/media/platform/xilinx/xilinx-tpg.c @@ -838,7 +838,7 @@ static int xtpg_probe(struct platform_device *pdev) subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; subdev->entity.ops = &xtpg_media_ops; - ret = media_entity_init(&subdev->entity, xtpg->npads, xtpg->pads); + ret = media_entity_pads_init(&subdev->entity, xtpg->npads, xtpg->pads); if (ret < 0) goto error; diff --git a/drivers/media/usb/au0828/au0828-video.c b/drivers/media/usb/au0828/au0828-video.c index 839361c035ff3c..8c54fd21022e44 100644 --- a/drivers/media/usb/au0828/au0828-video.c +++ b/drivers/media/usb/au0828/au0828-video.c @@ -1810,12 +1810,12 @@ static void au0828_analog_create_entities(struct au0828_dev *dev) /* Initialize Video and VBI pads */ dev->video_pad.flags = MEDIA_PAD_FL_SINK; - ret = media_entity_init(&dev->vdev.entity, 1, &dev->video_pad); + ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad); if (ret < 0) pr_err("failed to initialize video media entity!\n"); dev->vbi_pad.flags = MEDIA_PAD_FL_SINK; - ret = media_entity_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad); + ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad); if (ret < 0) pr_err("failed to initialize vbi media entity!\n"); @@ -1847,7 +1847,7 @@ static void au0828_analog_create_entities(struct au0828_dev *dev) break; } - ret = media_entity_init(ent, 1, &dev->input_pad[i]); + ret = media_entity_pads_init(ent, 1, &dev->input_pad[i]); if (ret < 0) pr_err("failed to initialize input pad[%d]!\n", i); diff --git a/drivers/media/usb/cx231xx/cx231xx-video.c b/drivers/media/usb/cx231xx/cx231xx-video.c index 905ccd7cbc6da1..9b88cd8127ac25 100644 --- a/drivers/media/usb/cx231xx/cx231xx-video.c +++ b/drivers/media/usb/cx231xx/cx231xx-video.c @@ -2175,7 +2175,7 @@ int cx231xx_register_analog_devices(struct cx231xx *dev) cx231xx_vdev_init(dev, &dev->vdev, &cx231xx_video_template, "video"); #if defined(CONFIG_MEDIA_CONTROLLER) dev->video_pad.flags = MEDIA_PAD_FL_SINK; - ret = media_entity_init(&dev->vdev.entity, 1, &dev->video_pad); + ret = media_entity_pads_init(&dev->vdev.entity, 1, &dev->video_pad); if (ret < 0) dev_err(dev->dev, "failed to initialize video media entity!\n"); #endif @@ -2202,7 +2202,7 @@ int cx231xx_register_analog_devices(struct cx231xx *dev) #if defined(CONFIG_MEDIA_CONTROLLER) dev->vbi_pad.flags = MEDIA_PAD_FL_SINK; - ret = media_entity_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad); + ret = media_entity_pads_init(&dev->vbi_dev.entity, 1, &dev->vbi_pad); if (ret < 0) dev_err(dev->dev, "failed to initialize vbi media entity!\n"); #endif diff --git a/drivers/media/usb/uvc/uvc_entity.c b/drivers/media/usb/uvc/uvc_entity.c index 7f82b65b238e12..38e893a1408bc8 100644 --- a/drivers/media/usb/uvc/uvc_entity.c +++ b/drivers/media/usb/uvc/uvc_entity.c @@ -94,10 +94,10 @@ static int uvc_mc_init_entity(struct uvc_entity *entity) strlcpy(entity->subdev.name, entity->name, sizeof(entity->subdev.name)); - ret = media_entity_init(&entity->subdev.entity, + ret = media_entity_pads_init(&entity->subdev.entity, entity->num_pads, entity->pads); } else if (entity->vdev != NULL) { - ret = media_entity_init(&entity->vdev->entity, + ret = media_entity_pads_init(&entity->vdev->entity, entity->num_pads, entity->pads); if (entity->flags & UVC_ENTITY_FLAG_DEFAULT) entity->vdev->entity.flags |= MEDIA_ENT_FL_DEFAULT; diff --git a/drivers/media/v4l2-core/tuner-core.c b/drivers/media/v4l2-core/tuner-core.c index 05fc4df61b85fa..76496fd282aa53 100644 --- a/drivers/media/v4l2-core/tuner-core.c +++ b/drivers/media/v4l2-core/tuner-core.c @@ -701,7 +701,7 @@ register_client: t->sd.entity.function = MEDIA_ENT_F_TUNER; t->sd.entity.name = t->name; - ret = media_entity_init(&t->sd.entity, TUNER_NUM_PADS, &t->pad[0]); + ret = media_entity_pads_init(&t->sd.entity, TUNER_NUM_PADS, &t->pad[0]); if (ret < 0) { tuner_err("failed to initialize media entity!\n"); kfree(t); diff --git a/drivers/media/v4l2-core/v4l2-flash-led-class.c b/drivers/media/v4l2-core/v4l2-flash-led-class.c index 5c686a24712ba2..13d5a36bc5d871 100644 --- a/drivers/media/v4l2-core/v4l2-flash-led-class.c +++ b/drivers/media/v4l2-core/v4l2-flash-led-class.c @@ -651,7 +651,7 @@ struct v4l2_flash *v4l2_flash_init( sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; strlcpy(sd->name, config->dev_name, sizeof(sd->name)); - ret = media_entity_init(&sd->entity, 0, NULL); + ret = media_entity_pads_init(&sd->entity, 0, NULL); if (ret < 0) return ERR_PTR(ret); diff --git a/drivers/staging/media/davinci_vpfe/dm365_ipipe.c b/drivers/staging/media/davinci_vpfe/dm365_ipipe.c index 77837afab0ce65..ac78ed2f8bccaa 100644 --- a/drivers/staging/media/davinci_vpfe/dm365_ipipe.c +++ b/drivers/staging/media/davinci_vpfe/dm365_ipipe.c @@ -1843,7 +1843,7 @@ vpfe_ipipe_init(struct vpfe_ipipe_device *ipipe, struct platform_device *pdev) v4l2_ctrl_handler_setup(&ipipe->ctrls); sd->ctrl_handler = &ipipe->ctrls; - return media_entity_init(me, IPIPE_PADS_NUM, pads); + return media_entity_pads_init(me, IPIPE_PADS_NUM, pads); } /* diff --git a/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c b/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c index b66584ecb6933b..a54c60fce3d5b1 100644 --- a/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c +++ b/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c @@ -1031,7 +1031,7 @@ int vpfe_ipipeif_init(struct vpfe_ipipeif_device *ipipeif, ipipeif->output = IPIPEIF_OUTPUT_NONE; me->ops = &ipipeif_media_ops; - ret = media_entity_init(me, IPIPEIF_NUM_PADS, pads); + ret = media_entity_pads_init(me, IPIPEIF_NUM_PADS, pads); if (ret) goto fail; diff --git a/drivers/staging/media/davinci_vpfe/dm365_isif.c b/drivers/staging/media/davinci_vpfe/dm365_isif.c index 8ca0c1297ec8c4..b35667afb73f61 100644 --- a/drivers/staging/media/davinci_vpfe/dm365_isif.c +++ b/drivers/staging/media/davinci_vpfe/dm365_isif.c @@ -2057,7 +2057,7 @@ int vpfe_isif_init(struct vpfe_isif_device *isif, struct platform_device *pdev) isif->input = ISIF_INPUT_NONE; isif->output = ISIF_OUTPUT_NONE; me->ops = &isif_media_ops; - status = media_entity_init(me, ISIF_PADS_NUM, pads); + status = media_entity_pads_init(me, ISIF_PADS_NUM, pads); if (status) goto isif_fail; isif->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; diff --git a/drivers/staging/media/davinci_vpfe/dm365_resizer.c b/drivers/staging/media/davinci_vpfe/dm365_resizer.c index ba887efd226a37..669ae3f9791fd3 100644 --- a/drivers/staging/media/davinci_vpfe/dm365_resizer.c +++ b/drivers/staging/media/davinci_vpfe/dm365_resizer.c @@ -1915,7 +1915,7 @@ int vpfe_resizer_init(struct vpfe_resizer_device *vpfe_rsz, vpfe_rsz->crop_resizer.output2 = RESIZER_CROP_OUTPUT_NONE; vpfe_rsz->crop_resizer.rsz_device = vpfe_rsz; me->ops = &resizer_media_ops; - ret = media_entity_init(me, RESIZER_CROP_PADS_NUM, pads); + ret = media_entity_pads_init(me, RESIZER_CROP_PADS_NUM, pads); if (ret) return ret; @@ -1937,7 +1937,7 @@ int vpfe_resizer_init(struct vpfe_resizer_device *vpfe_rsz, vpfe_rsz->resizer_a.output = RESIZER_OUTPUT_NONE; vpfe_rsz->resizer_a.rsz_device = vpfe_rsz; me->ops = &resizer_media_ops; - ret = media_entity_init(me, RESIZER_PADS_NUM, pads); + ret = media_entity_pads_init(me, RESIZER_PADS_NUM, pads); if (ret) return ret; @@ -1959,7 +1959,7 @@ int vpfe_resizer_init(struct vpfe_resizer_device *vpfe_rsz, vpfe_rsz->resizer_b.output = RESIZER_OUTPUT_NONE; vpfe_rsz->resizer_b.rsz_device = vpfe_rsz; me->ops = &resizer_media_ops; - ret = media_entity_init(me, RESIZER_PADS_NUM, pads); + ret = media_entity_pads_init(me, RESIZER_PADS_NUM, pads); if (ret) return ret; diff --git a/drivers/staging/media/davinci_vpfe/vpfe_video.c b/drivers/staging/media/davinci_vpfe/vpfe_video.c index a5e30413fc47cc..285dc1a69b2ca0 100644 --- a/drivers/staging/media/davinci_vpfe/vpfe_video.c +++ b/drivers/staging/media/davinci_vpfe/vpfe_video.c @@ -1599,7 +1599,7 @@ int vpfe_video_init(struct vpfe_video_device *video, const char *name) spin_lock_init(&video->irqlock); spin_lock_init(&video->dma_queue_lock); mutex_init(&video->lock); - ret = media_entity_init(&video->video_dev.entity, + ret = media_entity_pads_init(&video->video_dev.entity, 1, &video->pad); if (ret < 0) return ret; diff --git a/drivers/staging/media/omap4iss/iss_csi2.c b/drivers/staging/media/omap4iss/iss_csi2.c index 2b9a36cd8fa8ee..226366a036619d 100644 --- a/drivers/staging/media/omap4iss/iss_csi2.c +++ b/drivers/staging/media/omap4iss/iss_csi2.c @@ -1276,7 +1276,7 @@ static int csi2_init_entities(struct iss_csi2_device *csi2, const char *subname) pads[CSI2_PAD_SINK].flags = MEDIA_PAD_FL_SINK; me->ops = &csi2_media_ops; - ret = media_entity_init(me, CSI2_PADS_NUM, pads); + ret = media_entity_pads_init(me, CSI2_PADS_NUM, pads); if (ret < 0) return ret; diff --git a/drivers/staging/media/omap4iss/iss_ipipe.c b/drivers/staging/media/omap4iss/iss_ipipe.c index dd9d7d54e6f86a..d38782e8e84c78 100644 --- a/drivers/staging/media/omap4iss/iss_ipipe.c +++ b/drivers/staging/media/omap4iss/iss_ipipe.c @@ -516,7 +516,7 @@ static int ipipe_init_entities(struct iss_ipipe_device *ipipe) pads[IPIPE_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE; me->ops = &ipipe_media_ops; - ret = media_entity_init(me, IPIPE_PADS_NUM, pads); + ret = media_entity_pads_init(me, IPIPE_PADS_NUM, pads); if (ret < 0) return ret; diff --git a/drivers/staging/media/omap4iss/iss_ipipeif.c b/drivers/staging/media/omap4iss/iss_ipipeif.c index 8cbb9840a989cf..c2b5638a089885 100644 --- a/drivers/staging/media/omap4iss/iss_ipipeif.c +++ b/drivers/staging/media/omap4iss/iss_ipipeif.c @@ -748,7 +748,7 @@ static int ipipeif_init_entities(struct iss_ipipeif_device *ipipeif) pads[IPIPEIF_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE; me->ops = &ipipeif_media_ops; - ret = media_entity_init(me, IPIPEIF_PADS_NUM, pads); + ret = media_entity_pads_init(me, IPIPEIF_PADS_NUM, pads); if (ret < 0) return ret; diff --git a/drivers/staging/media/omap4iss/iss_resizer.c b/drivers/staging/media/omap4iss/iss_resizer.c index a3925ecd0ed795..fea13ab4041f6b 100644 --- a/drivers/staging/media/omap4iss/iss_resizer.c +++ b/drivers/staging/media/omap4iss/iss_resizer.c @@ -790,7 +790,7 @@ static int resizer_init_entities(struct iss_resizer_device *resizer) pads[RESIZER_PAD_SOURCE_MEM].flags = MEDIA_PAD_FL_SOURCE; me->ops = &resizer_media_ops; - ret = media_entity_init(me, RESIZER_PADS_NUM, pads); + ret = media_entity_pads_init(me, RESIZER_PADS_NUM, pads); if (ret < 0) return ret; diff --git a/drivers/staging/media/omap4iss/iss_video.c b/drivers/staging/media/omap4iss/iss_video.c index 60b7a58e6122de..8c6af412bc161c 100644 --- a/drivers/staging/media/omap4iss/iss_video.c +++ b/drivers/staging/media/omap4iss/iss_video.c @@ -1101,7 +1101,7 @@ int omap4iss_video_init(struct iss_video *video, const char *name) return -EINVAL; } - ret = media_entity_init(&video->video.entity, 1, &video->pad); + ret = media_entity_pads_init(&video->video.entity, 1, &video->pad); if (ret < 0) return ret; diff --git a/include/media/media-entity.h b/include/media/media-entity.h index cd3f3a77df2d78..32fef503d95066 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -347,7 +347,7 @@ void media_gobj_init(struct media_device *mdev, struct media_gobj *gobj); void media_gobj_remove(struct media_gobj *gobj); -int media_entity_init(struct media_entity *entity, u16 num_pads, +int media_entity_pads_init(struct media_entity *entity, u16 num_pads, struct media_pad *pads); void media_entity_cleanup(struct media_entity *entity); -- cgit 1.2.3-korg From 8ed8c88c460fa6ce71deb9847f78a5bff4dfcb0e Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 11 Dec 2015 08:02:19 -0200 Subject: [media] media-entity.h: get rid of revision and group_id fields Both revision and group_id fields were never used and were always initialized to zero. Remove them. Suggested-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml | 13 ++----------- Documentation/media-framework.txt | 12 +++++------- drivers/media/media-device.c | 4 ++-- include/media/media-entity.h | 4 ---- 4 files changed, 9 insertions(+), 24 deletions(-) diff --git a/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml b/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml index 27f8817e7abe96..9f7614a012342f 100644 --- a/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml +++ b/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml @@ -59,15 +59,6 @@ Entity IDs can be non-contiguous. Applications must not try to enumerate entities by calling MEDIA_IOC_ENUM_ENTITIES with increasing id's until they get an error. - Two or more entities that share a common non-zero - group_id value are considered as logically - grouped. Groups are used to report - - ALSA, VBI and video nodes that carry the same media - stream - lens and flash controllers associated with a sensor - - struct <structname>media_entity_desc</structname> @@ -106,7 +97,7 @@ revision - Entity revision in a driver/hardware specific format. + Entity revision. Always zero (obsolete) __u32 @@ -120,7 +111,7 @@ group_id - Entity group ID + Entity group ID. Always zero (obsolete) __u16 diff --git a/Documentation/media-framework.txt b/Documentation/media-framework.txt index 7fbfe4bd1f4765..ef3663af1db379 100644 --- a/Documentation/media-framework.txt +++ b/Documentation/media-framework.txt @@ -110,10 +110,10 @@ If no pads are needed, drivers could directly fill entity->num_pads with 0 and entity->pads with NULL or to call the above function that will do the same. -The media_entity name, type, flags, revision and group_id fields should be -initialized before calling media_device_register_entity(). Entities embedded -in higher-level standard structures can have some of those fields set by the -higher-level framework. +The media_entity name, type and flags fields should be initialized before +calling media_device_register_entity(). Entities embedded in higher-level +standard structures can have some of those fields set by the higher-level +framework. As the number of pads is known in advance, the pads array is not allocated dynamically but is managed by the entity driver. Most drivers will embed the @@ -164,9 +164,7 @@ Entities have flags that describe the entity capabilities and state. Logical entity groups can be defined by setting the group ID of all member entities to the same non-zero value. An entity group serves no purpose in the -kernel, but is reported to userspace during entities enumeration. The group_id -field belongs to the media device driver and must not by touched by entity -drivers. +kernel, but is reported to userspace during entities enumeration. Media device drivers should define groups if several entities are logically bound together. Example usages include reporting diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index b8cd7733a31c60..537160bb461e07 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -109,9 +109,9 @@ static long media_device_enum_entities(struct media_device *mdev, if (ent->name) strlcpy(u_ent.name, ent->name, sizeof(u_ent.name)); u_ent.type = ent->function; - u_ent.revision = ent->revision; + u_ent.revision = 0; /* Unused */ u_ent.flags = ent->flags; - u_ent.group_id = ent->group_id; + u_ent.group_id = 0; /* Unused */ u_ent.pads = ent->num_pads; u_ent.links = ent->num_links - ent->num_backlinks; memcpy(&u_ent.raw, &ent->info, sizeof(ent->info)); diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 32fef503d95066..031536723d8ca9 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -153,9 +153,7 @@ struct media_entity_operations { * @name: Entity name. * @function: Entity main function, as defined in uapi/media.h * (MEDIA_ENT_F_*) - * @revision: Entity revision - OBSOLETE - should be removed soon. * @flags: Entity flags, as defined in uapi/media.h (MEDIA_ENT_FL_*) - * @group_id: Entity group ID - OBSOLETE - should be removed soon. * @num_pads: Number of sink and source pads. * @num_links: Total number of links, forward and back, enabled and disabled. * @num_backlinks: Number of backlinks @@ -180,9 +178,7 @@ struct media_entity { struct media_gobj graph_obj; /* must be first field in struct */ const char *name; u32 function; - u32 revision; unsigned long flags; - u32 group_id; u16 num_pads; u16 num_links; -- cgit 1.2.3-korg From cc2dd94a051c8a467c66a258391cb980c3fb3312 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 11 Dec 2015 08:21:39 -0200 Subject: [media] DocBook: Move media-framework.txt contents to media-device.h Instead of using a text file, let's put it together with the struct documentation for the Media Controller. Signed-off-by: Mauro Carvalho Chehab --- Documentation/DocBook/device-drivers.tmpl | 1 + Documentation/media-framework.txt | 373 ----------------------------- include/media/media-device.h | 378 ++++++++++++++++++++++++++++++ 3 files changed, 379 insertions(+), 373 deletions(-) delete mode 100644 Documentation/media-framework.txt diff --git a/Documentation/DocBook/device-drivers.tmpl b/Documentation/DocBook/device-drivers.tmpl index 7b3fcc5effcde7..cdd8b24db68d3e 100644 --- a/Documentation/DocBook/device-drivers.tmpl +++ b/Documentation/DocBook/device-drivers.tmpl @@ -263,6 +263,7 @@ X!Isound/sound_firmware.c !Iinclude/media/lirc_dev.h Media Controller devices +!Pinclude/media/media-device.h Media Controller !Iinclude/media/media-device.h !Iinclude/media/media-devnode.h !Iinclude/media/media-entity.h diff --git a/Documentation/media-framework.txt b/Documentation/media-framework.txt deleted file mode 100644 index ef3663af1db379..00000000000000 --- a/Documentation/media-framework.txt +++ /dev/null @@ -1,373 +0,0 @@ -Linux kernel media framework -============================ - -This document describes the Linux kernel media framework, its data structures, -functions and their usage. - - -Introduction ------------- - -The media controller API is documented in DocBook format in -Documentation/DocBook/media/v4l/media-controller.xml. This document will focus -on the kernel-side implementation of the media framework. - - -Abstract media device model ---------------------------- - -Discovering a device internal topology, and configuring it at runtime, is one -of the goals of the media framework. To achieve this, hardware devices are -modelled as an oriented graph of building blocks called entities connected -through pads. - -An entity is a basic media hardware building block. It can correspond to -a large variety of logical blocks such as physical hardware devices -(CMOS sensor for instance), logical hardware devices (a building block -in a System-on-Chip image processing pipeline), DMA channels or physical -connectors. - -A pad is a connection endpoint through which an entity can interact with -other entities. Data (not restricted to video) produced by an entity -flows from the entity's output to one or more entity inputs. Pads should -not be confused with physical pins at chip boundaries. - -A link is a point-to-point oriented connection between two pads, either -on the same entity or on different entities. Data flows from a source -pad to a sink pad. - - -Media device ------------- - -A media device is represented by a struct media_device instance, defined in -include/media/media-device.h. Allocation of the structure is handled by the -media device driver, usually by embedding the media_device instance in a -larger driver-specific structure. - -Drivers register media device instances by calling - - media_device_register(struct media_device *mdev); - -The caller is responsible for initializing the media_device structure before -registration. The following fields must be set: - - - dev must point to the parent device (usually a pci_dev, usb_interface or - platform_device instance). - - - model must be filled with the device model name as a NUL-terminated UTF-8 - string. The device/model revision must not be stored in this field. - -The following fields are optional: - - - serial is a unique serial number stored as a NUL-terminated ASCII string. - The field is big enough to store a GUID in text form. If the hardware - doesn't provide a unique serial number this field must be left empty. - - - bus_info represents the location of the device in the system as a - NUL-terminated ASCII string. For PCI/PCIe devices bus_info must be set to - "PCI:" (or "PCIe:") followed by the value of pci_name(). For USB devices, - the usb_make_path() function must be used. This field is used by - applications to distinguish between otherwise identical devices that don't - provide a serial number. - - - hw_revision is the hardware device revision in a driver-specific format. - When possible the revision should be formatted with the KERNEL_VERSION - macro. - - - driver_version is formatted with the KERNEL_VERSION macro. The version - minor must be incremented when new features are added to the userspace API - without breaking binary compatibility. The version major must be - incremented when binary compatibility is broken. - -Upon successful registration a character device named media[0-9]+ is created. -The device major and minor numbers are dynamic. The model name is exported as -a sysfs attribute. - -Drivers unregister media device instances by calling - - media_device_unregister(struct media_device *mdev); - -Unregistering a media device that hasn't been registered is *NOT* safe. - - -Entities, pads and links ------------------------- - -- Entities - -Entities are represented by a struct media_entity instance, defined in -include/media/media-entity.h. The structure is usually embedded into a -higher-level structure, such as a v4l2_subdev or video_device instance, -although drivers can allocate entities directly. - -Drivers initialize entity pads by calling - - media_entity_pads_init(struct media_entity *entity, u16 num_pads, - struct media_pad *pads); - -If no pads are needed, drivers could directly fill entity->num_pads -with 0 and entity->pads with NULL or to call the above function that -will do the same. - -The media_entity name, type and flags fields should be initialized before -calling media_device_register_entity(). Entities embedded in higher-level -standard structures can have some of those fields set by the higher-level -framework. - -As the number of pads is known in advance, the pads array is not allocated -dynamically but is managed by the entity driver. Most drivers will embed the -pads array in a driver-specific structure, avoiding dynamic allocation. - -Drivers must set the direction of every pad in the pads array before calling -media_entity_pads_init. The function will initialize the other pads fields. - -Unlike the number of pads, the total number of links isn't always known in -advance by the entity driver. As an initial estimate, media_entity_pads_init -pre-allocates a number of links equal to the number of pads. The links array -will be reallocated if it grows beyond the initial estimate. - -Drivers register entities with a media device by calling - - media_device_register_entity(struct media_device *mdev, - struct media_entity *entity); - -Entities are identified by a unique positive integer ID. Drivers can provide an -ID by filling the media_entity id field prior to registration, or request the -media controller framework to assign an ID automatically. Drivers that provide -IDs manually must ensure that all IDs are unique. IDs are not guaranteed to be -contiguous even when they are all assigned automatically by the framework. - -Drivers unregister entities by calling - - media_device_unregister_entity(struct media_entity *entity); - -Unregistering an entity will not change the IDs of the other entities, and the -ID will never be reused for a newly registered entity. - -When a media device is unregistered, all its entities are unregistered -automatically. No manual entities unregistration is then required. - -Drivers free resources associated with an entity by calling - - media_entity_cleanup(struct media_entity *entity); - -This function must be called during the cleanup phase after unregistering the -entity. Note that the media_entity instance itself must be freed explicitly by -the driver if required. - -Entities have flags that describe the entity capabilities and state. - - MEDIA_ENT_FL_DEFAULT indicates the default entity for a given type. - This can be used to report the default audio and video devices or the - default camera sensor. - -Logical entity groups can be defined by setting the group ID of all member -entities to the same non-zero value. An entity group serves no purpose in the -kernel, but is reported to userspace during entities enumeration. - -Media device drivers should define groups if several entities are logically -bound together. Example usages include reporting - - - ALSA, VBI and video nodes that carry the same media stream - - lens and flash controllers associated with a sensor - -- Pads - -Pads are represented by a struct media_pad instance, defined in -include/media/media-entity.h. Each entity stores its pads in a pads array -managed by the entity driver. Drivers usually embed the array in a -driver-specific structure. - -Pads are identified by their entity and their 0-based index in the pads array. -Both information are stored in the media_pad structure, making the media_pad -pointer the canonical way to store and pass link references. - -Pads have flags that describe the pad capabilities and state. - - MEDIA_PAD_FL_SINK indicates that the pad supports sinking data. - MEDIA_PAD_FL_SOURCE indicates that the pad supports sourcing data. - -One and only one of MEDIA_PAD_FL_SINK and MEDIA_PAD_FL_SOURCE must be set for -each pad. - -- Links - -Links are represented by a struct media_link instance, defined in -include/media/media-entity.h. Each entity stores all links originating at or -targeting any of its pads in a links array. A given link is thus stored -twice, once in the source entity and once in the target entity. The array is -pre-allocated and grows dynamically as needed. - -Drivers create links by calling - - media_create_pad_link(struct media_entity *source, u16 source_pad, - struct media_entity *sink, u16 sink_pad, - u32 flags); - -An entry in the link array of each entity is allocated and stores pointers -to source and sink pads. - -Links have flags that describe the link capabilities and state. - - MEDIA_LNK_FL_ENABLED indicates that the link is enabled and can be used - to transfer media data. When two or more links target a sink pad, only - one of them can be enabled at a time. - MEDIA_LNK_FL_IMMUTABLE indicates that the link enabled state can't be - modified at runtime. If MEDIA_LNK_FL_IMMUTABLE is set, then - MEDIA_LNK_FL_ENABLED must also be set since an immutable link is always - enabled. - - -Graph traversal ---------------- - -The media framework provides APIs to iterate over entities in a graph. - -To iterate over all entities belonging to a media device, drivers can use the -media_device_for_each_entity macro, defined in include/media/media-device.h. - - struct media_entity *entity; - - media_device_for_each_entity(entity, mdev) { - /* entity will point to each entity in turn */ - ... - } - -Drivers might also need to iterate over all entities in a graph that can be -reached only through enabled links starting at a given entity. The media -framework provides a depth-first graph traversal API for that purpose. - -Note that graphs with cycles (whether directed or undirected) are *NOT* -supported by the graph traversal API. To prevent infinite loops, the graph -traversal code limits the maximum depth to MEDIA_ENTITY_ENUM_MAX_DEPTH, -currently defined as 16. - -Drivers initiate a graph traversal by calling - - media_entity_graph_walk_start(struct media_entity_graph *graph, - struct media_entity *entity); - -The graph structure, provided by the caller, is initialized to start graph -traversal at the given entity. - -Drivers can then retrieve the next entity by calling - - media_entity_graph_walk_next(struct media_entity_graph *graph); - -When the graph traversal is complete the function will return NULL. - -Graph traversal can be interrupted at any moment. No cleanup function call is -required and the graph structure can be freed normally. - -Helper functions can be used to find a link between two given pads, or a pad -connected to another pad through an enabled link - - media_entity_find_link(struct media_pad *source, - struct media_pad *sink); - - media_entity_remote_pad(struct media_pad *pad); - -Refer to the kerneldoc documentation for more information. - - -Use count and power handling ----------------------------- - -Due to the wide differences between drivers regarding power management needs, -the media controller does not implement power management. However, the -media_entity structure includes a use_count field that media drivers can use to -track the number of users of every entity for power management needs. - -The use_count field is owned by media drivers and must not be touched by entity -drivers. Access to the field must be protected by the media device graph_mutex -lock. - - -Links setup ------------ - -Link properties can be modified at runtime by calling - - media_entity_setup_link(struct media_link *link, u32 flags); - -The flags argument contains the requested new link flags. - -The only configurable property is the ENABLED link flag to enable/disable a -link. Links marked with the IMMUTABLE link flag can not be enabled or disabled. - -When a link is enabled or disabled, the media framework calls the -link_setup operation for the two entities at the source and sink of the link, -in that order. If the second link_setup call fails, another link_setup call is -made on the first entity to restore the original link flags. - -Media device drivers can be notified of link setup operations by setting the -media_device::link_notify pointer to a callback function. If provided, the -notification callback will be called before enabling and after disabling -links. - -Entity drivers must implement the link_setup operation if any of their links -is non-immutable. The operation must either configure the hardware or store -the configuration information to be applied later. - -Link configuration must not have any side effect on other links. If an enabled -link at a sink pad prevents another link at the same pad from being enabled, -the link_setup operation must return -EBUSY and can't implicitly disable the -first enabled link. - - -Pipelines and media streams ---------------------------- - -When starting streaming, drivers must notify all entities in the pipeline to -prevent link states from being modified during streaming by calling - - media_entity_pipeline_start(struct media_entity *entity, - struct media_pipeline *pipe); - -The function will mark all entities connected to the given entity through -enabled links, either directly or indirectly, as streaming. - -The media_pipeline instance pointed to by the pipe argument will be stored in -every entity in the pipeline. Drivers should embed the media_pipeline structure -in higher-level pipeline structures and can then access the pipeline through -the media_entity pipe field. - -Calls to media_entity_pipeline_start() can be nested. The pipeline pointer must -be identical for all nested calls to the function. - -media_entity_pipeline_start() may return an error. In that case, it will -clean up any of the changes it did by itself. - -When stopping the stream, drivers must notify the entities with - - media_entity_pipeline_stop(struct media_entity *entity); - -If multiple calls to media_entity_pipeline_start() have been made the same -number of media_entity_pipeline_stop() calls are required to stop streaming. The -media_entity pipe field is reset to NULL on the last nested stop call. - -Link configuration will fail with -EBUSY by default if either end of the link is -a streaming entity. Links that can be modified while streaming must be marked -with the MEDIA_LNK_FL_DYNAMIC flag. - -If other operations need to be disallowed on streaming entities (such as -changing entities configuration parameters) drivers can explicitly check the -media_entity stream_count field to find out if an entity is streaming. This -operation must be done with the media_device graph_mutex held. - - -Link validation ---------------- - -Link validation is performed by media_entity_pipeline_start() for any -entity which has sink pads in the pipeline. The -media_entity::link_validate() callback is used for that purpose. In -link_validate() callback, entity driver should check that the properties of -the source pad of the connected entity and its own sink pad match. It is up -to the type of the entity (and in the end, the properties of the hardware) -what matching actually means. - -Subsystems should facilitate link validation by providing subsystem specific -helper functions to provide easy access for commonly needed information, and -in the end provide a way to use driver-specific callbacks. diff --git a/include/media/media-device.h b/include/media/media-device.h index 87ff299e1265d2..6728528df9e2d3 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -30,6 +30,384 @@ #include #include +/** + * DOC: Media Controller + * + * Linux kernel media framework + * ============================ + * + * This document describes the Linux kernel media framework, its data structures, + * functions and their usage. + * + * + * Introduction + * ------------ + * + * The media controller API is documented in DocBook format in + * Documentation/DocBook/media/v4l/media-controller.xml. This document will focus + * on the kernel-side implementation of the media framework. + * + * + * Abstract media device model + * --------------------------- + * + * Discovering a device internal topology, and configuring it at runtime, is one + * of the goals of the media framework. To achieve this, hardware devices are + * modelled as an oriented graph of building blocks called entities connected + * through pads. + * + * An entity is a basic media hardware building block. It can correspond to + * a large variety of logical blocks such as physical hardware devices + * (CMOS sensor for instance), logical hardware devices (a building block + * in a System-on-Chip image processing pipeline), DMA channels or physical + * connectors. + * + * A pad is a connection endpoint through which an entity can interact with + * other entities. Data (not restricted to video) produced by an entity + * flows from the entity's output to one or more entity inputs. Pads should + * not be confused with physical pins at chip boundaries. + * + * A link is a point-to-point oriented connection between two pads, either + * on the same entity or on different entities. Data flows from a source + * pad to a sink pad. + * + * + * Media device + * ------------ + * + * A media device is represented by a struct media_device instance, defined in + * include/media/media-device.h. Allocation of the structure is handled by the + * media device driver, usually by embedding the media_device instance in a + * larger driver-specific structure. + * + * Drivers register media device instances by calling + * + * media_device_register(struct media_device *mdev); + * + * The caller is responsible for initializing the media_device structure before + * registration. The following fields must be set: + * + * - dev must point to the parent device (usually a pci_dev, usb_interface or + * platform_device instance). + * + * - model must be filled with the device model name as a NUL-terminated UTF-8 + * string. The device/model revision must not be stored in this field. + * + * The following fields are optional: + * + * - serial is a unique serial number stored as a NUL-terminated ASCII string. + * The field is big enough to store a GUID in text form. If the hardware + * doesn't provide a unique serial number this field must be left empty. + * + * - bus_info represents the location of the device in the system as a + * NUL-terminated ASCII string. For PCI/PCIe devices bus_info must be set to + * "PCI:" (or "PCIe:") followed by the value of pci_name(). For USB devices, + * the usb_make_path() function must be used. This field is used by + * applications to distinguish between otherwise identical devices that don't + * provide a serial number. + * + * - hw_revision is the hardware device revision in a driver-specific format. + * When possible the revision should be formatted with the KERNEL_VERSION + * macro. + * + * - driver_version is formatted with the KERNEL_VERSION macro. The version + * minor must be incremented when new features are added to the userspace API + * without breaking binary compatibility. The version major must be + * incremented when binary compatibility is broken. + * + * Upon successful registration a character device named media[0-9]+ is created. + * The device major and minor numbers are dynamic. The model name is exported as + * a sysfs attribute. + * + * Drivers unregister media device instances by calling + * + * media_device_unregister(struct media_device *mdev); + * + * Unregistering a media device that hasn't been registered is *NOT* safe. + * + * + * Entities, pads and links + * ------------------------ + * + * - Entities + * + * Entities are represented by a struct media_entity instance, defined in + * include/media/media-entity.h. The structure is usually embedded into a + * higher-level structure, such as a v4l2_subdev or video_device instance, + * although drivers can allocate entities directly. + * + * Drivers initialize entity pads by calling + * + * media_entity_pads_init(struct media_entity *entity, u16 num_pads, + * struct media_pad *pads); + * + * If no pads are needed, drivers could directly fill entity->num_pads + * with 0 and entity->pads with NULL or to call the above function that + * will do the same. + * + * The media_entity name, type and flags fields should be initialized before + * calling media_device_register_entity(). Entities embedded in higher-level + * standard structures can have some of those fields set by the higher-level + * framework. + * + * As the number of pads is known in advance, the pads array is not allocated + * dynamically but is managed by the entity driver. Most drivers will embed the + * pads array in a driver-specific structure, avoiding dynamic allocation. + * + * Drivers must set the direction of every pad in the pads array before calling + * media_entity_pads_init. The function will initialize the other pads fields. + * + * Unlike the number of pads, the total number of links isn't always known in + * advance by the entity driver. As an initial estimate, media_entity_pads_init + * pre-allocates a number of links equal to the number of pads. The links array + * will be reallocated if it grows beyond the initial estimate. + * + * Drivers register entities with a media device by calling + * + * media_device_register_entity(struct media_device *mdev, + * struct media_entity *entity); + * + * Entities are identified by a unique positive integer ID. Drivers can provide an + * ID by filling the media_entity id field prior to registration, or request the + * media controller framework to assign an ID automatically. Drivers that provide + * IDs manually must ensure that all IDs are unique. IDs are not guaranteed to be + * contiguous even when they are all assigned automatically by the framework. + * + * Drivers unregister entities by calling + * + * media_device_unregister_entity(struct media_entity *entity); + * + * Unregistering an entity will not change the IDs of the other entities, and the + * ID will never be reused for a newly registered entity. + * + * When a media device is unregistered, all its entities are unregistered + * automatically. No manual entities unregistration is then required. + * + * Drivers free resources associated with an entity by calling + * + * media_entity_cleanup(struct media_entity *entity); + * + * This function must be called during the cleanup phase after unregistering the + * entity. Note that the media_entity instance itself must be freed explicitly by + * the driver if required. + * + * Entities have flags that describe the entity capabilities and state. + * + * MEDIA_ENT_FL_DEFAULT indicates the default entity for a given type. + * This can be used to report the default audio and video devices or the + * default camera sensor. + * + * Logical entity groups can be defined by setting the group ID of all member + * entities to the same non-zero value. An entity group serves no purpose in the + * kernel, but is reported to userspace during entities enumeration. + * + * Media device drivers should define groups if several entities are logically + * bound together. Example usages include reporting + * + * - ALSA, VBI and video nodes that carry the same media stream + * - lens and flash controllers associated with a sensor + * + * - Pads + * + * Pads are represented by a struct media_pad instance, defined in + * include/media/media-entity.h. Each entity stores its pads in a pads array + * managed by the entity driver. Drivers usually embed the array in a + * driver-specific structure. + * + * Pads are identified by their entity and their 0-based index in the pads array. + * Both information are stored in the media_pad structure, making the media_pad + * pointer the canonical way to store and pass link references. + * + * Pads have flags that describe the pad capabilities and state. + * + * MEDIA_PAD_FL_SINK indicates that the pad supports sinking data. + * MEDIA_PAD_FL_SOURCE indicates that the pad supports sourcing data. + * + * One and only one of MEDIA_PAD_FL_SINK and MEDIA_PAD_FL_SOURCE must be set for + * each pad. + * + * - Links + * + * Links are represented by a struct media_link instance, defined in + * include/media/media-entity.h. Each entity stores all links originating at or + * targeting any of its pads in a links array. A given link is thus stored + * twice, once in the source entity and once in the target entity. The array is + * pre-allocated and grows dynamically as needed. + * + * Drivers create links by calling + * + * media_create_pad_link(struct media_entity *source, u16 source_pad, + * struct media_entity *sink, u16 sink_pad, + * u32 flags); + * + * An entry in the link array of each entity is allocated and stores pointers + * to source and sink pads. + * + * Links have flags that describe the link capabilities and state. + * + * MEDIA_LNK_FL_ENABLED indicates that the link is enabled and can be used + * to transfer media data. When two or more links target a sink pad, only + * one of them can be enabled at a time. + * MEDIA_LNK_FL_IMMUTABLE indicates that the link enabled state can't be + * modified at runtime. If MEDIA_LNK_FL_IMMUTABLE is set, then + * MEDIA_LNK_FL_ENABLED must also be set since an immutable link is always + * enabled. + * + * + * Graph traversal + * --------------- + * + * The media framework provides APIs to iterate over entities in a graph. + * + * To iterate over all entities belonging to a media device, drivers can use the + * media_device_for_each_entity macro, defined in include/media/media-device.h. + * + * struct media_entity *entity; + * + * media_device_for_each_entity(entity, mdev) { + * // entity will point to each entity in turn + * ... + * } + * + * Drivers might also need to iterate over all entities in a graph that can be + * reached only through enabled links starting at a given entity. The media + * framework provides a depth-first graph traversal API for that purpose. + * + * Note that graphs with cycles (whether directed or undirected) are *NOT* + * supported by the graph traversal API. To prevent infinite loops, the graph + * traversal code limits the maximum depth to MEDIA_ENTITY_ENUM_MAX_DEPTH, + * currently defined as 16. + * + * Drivers initiate a graph traversal by calling + * + * media_entity_graph_walk_start(struct media_entity_graph *graph, + * struct media_entity *entity); + * + * The graph structure, provided by the caller, is initialized to start graph + * traversal at the given entity. + * + * Drivers can then retrieve the next entity by calling + * + * media_entity_graph_walk_next(struct media_entity_graph *graph); + * + * When the graph traversal is complete the function will return NULL. + * + * Graph traversal can be interrupted at any moment. No cleanup function call is + * required and the graph structure can be freed normally. + * + * Helper functions can be used to find a link between two given pads, or a pad + * connected to another pad through an enabled link + * + * media_entity_find_link(struct media_pad *source, + * struct media_pad *sink); + * + * media_entity_remote_pad(struct media_pad *pad); + * + * Refer to the kerneldoc documentation for more information. + * + * + * Use count and power handling + * ---------------------------- + * + * Due to the wide differences between drivers regarding power management needs, + * the media controller does not implement power management. However, the + * media_entity structure includes a use_count field that media drivers can use to + * track the number of users of every entity for power management needs. + * + * The use_count field is owned by media drivers and must not be touched by entity + * drivers. Access to the field must be protected by the media device graph_mutex + * lock. + * + * + * Links setup + * ----------- + * + * Link properties can be modified at runtime by calling + * + * media_entity_setup_link(struct media_link *link, u32 flags); + * + * The flags argument contains the requested new link flags. + * + * The only configurable property is the ENABLED link flag to enable/disable a + * link. Links marked with the IMMUTABLE link flag can not be enabled or disabled. + * + * When a link is enabled or disabled, the media framework calls the + * link_setup operation for the two entities at the source and sink of the link, + * in that order. If the second link_setup call fails, another link_setup call is + * made on the first entity to restore the original link flags. + * + * Media device drivers can be notified of link setup operations by setting the + * media_device::link_notify pointer to a callback function. If provided, the + * notification callback will be called before enabling and after disabling + * links. + * + * Entity drivers must implement the link_setup operation if any of their links + * is non-immutable. The operation must either configure the hardware or store + * the configuration information to be applied later. + * + * Link configuration must not have any side effect on other links. If an enabled + * link at a sink pad prevents another link at the same pad from being enabled, + * the link_setup operation must return -EBUSY and can't implicitly disable the + * first enabled link. + * + * + * Pipelines and media streams + * --------------------------- + * + * When starting streaming, drivers must notify all entities in the pipeline to + * prevent link states from being modified during streaming by calling + * + * media_entity_pipeline_start(struct media_entity *entity, + * struct media_pipeline *pipe); + * + * The function will mark all entities connected to the given entity through + * enabled links, either directly or indirectly, as streaming. + * + * The media_pipeline instance pointed to by the pipe argument will be stored in + * every entity in the pipeline. Drivers should embed the media_pipeline structure + * in higher-level pipeline structures and can then access the pipeline through + * the media_entity pipe field. + * + * Calls to media_entity_pipeline_start() can be nested. The pipeline pointer must + * be identical for all nested calls to the function. + * + * media_entity_pipeline_start() may return an error. In that case, it will + * clean up any of the changes it did by itself. + * + * When stopping the stream, drivers must notify the entities with + * + * media_entity_pipeline_stop(struct media_entity *entity); + * + * If multiple calls to media_entity_pipeline_start() have been made the same + * number of media_entity_pipeline_stop() calls are required to stop streaming. The + * media_entity pipe field is reset to NULL on the last nested stop call. + * + * Link configuration will fail with -EBUSY by default if either end of the link is + * a streaming entity. Links that can be modified while streaming must be marked + * with the MEDIA_LNK_FL_DYNAMIC flag. + * + * If other operations need to be disallowed on streaming entities (such as + * changing entities configuration parameters) drivers can explicitly check the + * media_entity stream_count field to find out if an entity is streaming. This + * operation must be done with the media_device graph_mutex held. + * + * + * Link validation + * --------------- + * + * Link validation is performed by media_entity_pipeline_start() for any + * entity which has sink pads in the pipeline. The + * media_entity::link_validate() callback is used for that purpose. In + * link_validate() callback, entity driver should check that the properties of + * the source pad of the connected entity and its own sink pad match. It is up + * to the type of the entity (and in the end, the properties of the hardware) + * what matching actually means. + * + * Subsystems should facilitate link validation by providing subsystem specific + * helper functions to provide easy access for commonly needed information, and + * in the end provide a way to use driver-specific callbacks. + */ + struct device; /** -- cgit 1.2.3-korg From f1fd3289e8c2b99cdf5c1c4426a7d28a809159c2 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 11 Dec 2015 09:13:23 -0200 Subject: [media] media-entity.h: convert media_entity_cleanup to inline This function was used in the past to free the links that were allocated by the media controller core. However, this is not needed anymore. We should likely get rid of the funcion on some function, but, for now, let's just convert into an inlined function and let the compiler to get rid of it. Suggested-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 6 ------ include/media/media-entity.h | 3 ++- 2 files changed, 2 insertions(+), 7 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index ef2102ac0c66d9..849db4f6f1f370 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -246,12 +246,6 @@ media_entity_pads_init(struct media_entity *entity, u16 num_pads, } EXPORT_SYMBOL_GPL(media_entity_pads_init); -void -media_entity_cleanup(struct media_entity *entity) -{ -} -EXPORT_SYMBOL_GPL(media_entity_cleanup); - /* ----------------------------------------------------------------------------- * Graph traversal */ diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 031536723d8ca9..e9bc5857899cd8 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -345,7 +345,8 @@ void media_gobj_remove(struct media_gobj *gobj); int media_entity_pads_init(struct media_entity *entity, u16 num_pads, struct media_pad *pads); -void media_entity_cleanup(struct media_entity *entity); + +static inline void media_entity_cleanup(struct media_entity *entity) {}; __must_check int media_create_pad_link(struct media_entity *source, u16 source_pad, struct media_entity *sink, -- cgit 1.2.3-korg From db7ee32aa1859c155e634a4d5c44b9cff4c9a6e5 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 11 Dec 2015 11:06:08 -0200 Subject: [media] media-device.h: Improve documentation and update it Now that we moved the content of the media-framework.txt into the kerneldoc documentation, move the per-function specific documentation to the corresponding functions and clean it up. It would be good if we had already the markdown kernel-doc patches merged upstream, but, while we doesn't have it, let's make it less ugly at device-drivers.xml. Signed-off-by: Mauro Carvalho Chehab --- include/media/media-device.h | 429 +++++++++++++++++++------------------------ include/media/media-entity.h | 148 +++++++++++++++ 2 files changed, 339 insertions(+), 238 deletions(-) diff --git a/include/media/media-device.h b/include/media/media-device.h index 6728528df9e2d3..65fdd44e05efa0 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -33,23 +33,11 @@ /** * DOC: Media Controller * - * Linux kernel media framework - * ============================ - * - * This document describes the Linux kernel media framework, its data structures, - * functions and their usage. - * - * - * Introduction - * ------------ - * - * The media controller API is documented in DocBook format in - * Documentation/DocBook/media/v4l/media-controller.xml. This document will focus + * The media controller userspace API is documented in DocBook format in + * Documentation/DocBook/media/v4l/media-controller.xml. This document focus * on the kernel-side implementation of the media framework. * - * - * Abstract media device model - * --------------------------- + * * Abstract media device model: * * Discovering a device internal topology, and configuring it at runtime, is one * of the goals of the media framework. To achieve this, hardware devices are @@ -72,195 +60,104 @@ * pad to a sink pad. * * - * Media device - * ------------ + * * Media device: * - * A media device is represented by a struct media_device instance, defined in + * A media device is represented by a struct &media_device instance, defined in * include/media/media-device.h. Allocation of the structure is handled by the - * media device driver, usually by embedding the media_device instance in a + * media device driver, usually by embedding the &media_device instance in a * larger driver-specific structure. * * Drivers register media device instances by calling + * __media_device_register() via the macro media_device_register() + * and unregistered by calling + * media_device_unregister(). * - * media_device_register(struct media_device *mdev); - * - * The caller is responsible for initializing the media_device structure before - * registration. The following fields must be set: - * - * - dev must point to the parent device (usually a pci_dev, usb_interface or - * platform_device instance). - * - * - model must be filled with the device model name as a NUL-terminated UTF-8 - * string. The device/model revision must not be stored in this field. - * - * The following fields are optional: - * - * - serial is a unique serial number stored as a NUL-terminated ASCII string. - * The field is big enough to store a GUID in text form. If the hardware - * doesn't provide a unique serial number this field must be left empty. - * - * - bus_info represents the location of the device in the system as a - * NUL-terminated ASCII string. For PCI/PCIe devices bus_info must be set to - * "PCI:" (or "PCIe:") followed by the value of pci_name(). For USB devices, - * the usb_make_path() function must be used. This field is used by - * applications to distinguish between otherwise identical devices that don't - * provide a serial number. - * - * - hw_revision is the hardware device revision in a driver-specific format. - * When possible the revision should be formatted with the KERNEL_VERSION - * macro. - * - * - driver_version is formatted with the KERNEL_VERSION macro. The version - * minor must be incremented when new features are added to the userspace API - * without breaking binary compatibility. The version major must be - * incremented when binary compatibility is broken. - * - * Upon successful registration a character device named media[0-9]+ is created. - * The device major and minor numbers are dynamic. The model name is exported as - * a sysfs attribute. - * - * Drivers unregister media device instances by calling - * - * media_device_unregister(struct media_device *mdev); - * - * Unregistering a media device that hasn't been registered is *NOT* safe. - * - * - * Entities, pads and links - * ------------------------ + * * Entities, pads and links: * * - Entities * - * Entities are represented by a struct media_entity instance, defined in + * Entities are represented by a struct &media_entity instance, defined in * include/media/media-entity.h. The structure is usually embedded into a * higher-level structure, such as a v4l2_subdev or video_device instance, * although drivers can allocate entities directly. * * Drivers initialize entity pads by calling - * - * media_entity_pads_init(struct media_entity *entity, u16 num_pads, - * struct media_pad *pads); - * - * If no pads are needed, drivers could directly fill entity->num_pads - * with 0 and entity->pads with NULL or to call the above function that - * will do the same. - * - * The media_entity name, type and flags fields should be initialized before - * calling media_device_register_entity(). Entities embedded in higher-level - * standard structures can have some of those fields set by the higher-level - * framework. - * - * As the number of pads is known in advance, the pads array is not allocated - * dynamically but is managed by the entity driver. Most drivers will embed the - * pads array in a driver-specific structure, avoiding dynamic allocation. - * - * Drivers must set the direction of every pad in the pads array before calling - * media_entity_pads_init. The function will initialize the other pads fields. - * - * Unlike the number of pads, the total number of links isn't always known in - * advance by the entity driver. As an initial estimate, media_entity_pads_init - * pre-allocates a number of links equal to the number of pads. The links array - * will be reallocated if it grows beyond the initial estimate. + * media_entity_pads_init(). * * Drivers register entities with a media device by calling + * media_device_register_entity() + * and unregistred by calling + * media_device_unregister_entity(). * - * media_device_register_entity(struct media_device *mdev, - * struct media_entity *entity); + * - Interfaces * - * Entities are identified by a unique positive integer ID. Drivers can provide an - * ID by filling the media_entity id field prior to registration, or request the - * media controller framework to assign an ID automatically. Drivers that provide - * IDs manually must ensure that all IDs are unique. IDs are not guaranteed to be - * contiguous even when they are all assigned automatically by the framework. + * Interfaces are represented by a struct &media_interface instance, defined in + * include/media/media-entity.h. Currently, only one type of interface is + * defined: a device node. Such interfaces are represented by a struct + * &media_intf_devnode. * - * Drivers unregister entities by calling - * - * media_device_unregister_entity(struct media_entity *entity); - * - * Unregistering an entity will not change the IDs of the other entities, and the - * ID will never be reused for a newly registered entity. - * - * When a media device is unregistered, all its entities are unregistered - * automatically. No manual entities unregistration is then required. - * - * Drivers free resources associated with an entity by calling - * - * media_entity_cleanup(struct media_entity *entity); - * - * This function must be called during the cleanup phase after unregistering the - * entity. Note that the media_entity instance itself must be freed explicitly by - * the driver if required. - * - * Entities have flags that describe the entity capabilities and state. - * - * MEDIA_ENT_FL_DEFAULT indicates the default entity for a given type. - * This can be used to report the default audio and video devices or the - * default camera sensor. - * - * Logical entity groups can be defined by setting the group ID of all member - * entities to the same non-zero value. An entity group serves no purpose in the - * kernel, but is reported to userspace during entities enumeration. - * - * Media device drivers should define groups if several entities are logically - * bound together. Example usages include reporting - * - * - ALSA, VBI and video nodes that carry the same media stream - * - lens and flash controllers associated with a sensor + * Drivers initialize and create device node interfaces by calling + * media_devnode_create() + * and remove them by calling: + * media_devnode_remove(). * * - Pads * - * Pads are represented by a struct media_pad instance, defined in + * Pads are represented by a struct &media_pad instance, defined in * include/media/media-entity.h. Each entity stores its pads in a pads array * managed by the entity driver. Drivers usually embed the array in a * driver-specific structure. * - * Pads are identified by their entity and their 0-based index in the pads array. - * Both information are stored in the media_pad structure, making the media_pad - * pointer the canonical way to store and pass link references. + * Pads are identified by their entity and their 0-based index in the pads + * array. + * Both information are stored in the &media_pad structure, making the + * &media_pad pointer the canonical way to store and pass link references. * * Pads have flags that describe the pad capabilities and state. * - * MEDIA_PAD_FL_SINK indicates that the pad supports sinking data. - * MEDIA_PAD_FL_SOURCE indicates that the pad supports sourcing data. + * %MEDIA_PAD_FL_SINK indicates that the pad supports sinking data. + * %MEDIA_PAD_FL_SOURCE indicates that the pad supports sourcing data. * - * One and only one of MEDIA_PAD_FL_SINK and MEDIA_PAD_FL_SOURCE must be set for - * each pad. + * NOTE: One and only one of %MEDIA_PAD_FL_SINK and %MEDIA_PAD_FL_SOURCE must + * be set for each pad. * * - Links * - * Links are represented by a struct media_link instance, defined in - * include/media/media-entity.h. Each entity stores all links originating at or - * targeting any of its pads in a links array. A given link is thus stored - * twice, once in the source entity and once in the target entity. The array is - * pre-allocated and grows dynamically as needed. + * Links are represented by a struct &media_link instance, defined in + * include/media/media-entity.h. There are two types of links: + * + * 1. pad to pad links: * - * Drivers create links by calling + * Associate two entities via their PADs. Each entity has a list that points + * to all links originating at or targeting any of its pads. + * A given link is thus stored twice, once in the source entity and once in + * the target entity. * - * media_create_pad_link(struct media_entity *source, u16 source_pad, - * struct media_entity *sink, u16 sink_pad, - * u32 flags); + * Drivers create pad to pad links by calling: + * media_create_pad_link() and remove with media_entity_remove_links(). * - * An entry in the link array of each entity is allocated and stores pointers - * to source and sink pads. + * 2. interface to entity links: * - * Links have flags that describe the link capabilities and state. + * Associate one interface to a Link. * - * MEDIA_LNK_FL_ENABLED indicates that the link is enabled and can be used - * to transfer media data. When two or more links target a sink pad, only - * one of them can be enabled at a time. - * MEDIA_LNK_FL_IMMUTABLE indicates that the link enabled state can't be - * modified at runtime. If MEDIA_LNK_FL_IMMUTABLE is set, then - * MEDIA_LNK_FL_ENABLED must also be set since an immutable link is always - * enabled. + * Drivers create interface to entity links by calling: + * media_create_intf_link() and remove with media_remove_intf_links(). * + * NOTE: * - * Graph traversal - * --------------- + * Links can only be created after having both ends already created. + * + * Links have flags that describe the link capabilities and state. The + * valid values are described at media_create_pad_link() and + * media_create_intf_link(). + * + * Graph traversal: * * The media framework provides APIs to iterate over entities in a graph. * - * To iterate over all entities belonging to a media device, drivers can use the - * media_device_for_each_entity macro, defined in include/media/media-device.h. + * To iterate over all entities belonging to a media device, drivers can use + * the media_device_for_each_entity macro, defined in + * include/media/media-device.h. * * struct media_entity *entity; * @@ -279,126 +176,82 @@ * currently defined as 16. * * Drivers initiate a graph traversal by calling - * - * media_entity_graph_walk_start(struct media_entity_graph *graph, - * struct media_entity *entity); + * media_entity_graph_walk_start() * * The graph structure, provided by the caller, is initialized to start graph * traversal at the given entity. * * Drivers can then retrieve the next entity by calling - * - * media_entity_graph_walk_next(struct media_entity_graph *graph); + * media_entity_graph_walk_next() * * When the graph traversal is complete the function will return NULL. * - * Graph traversal can be interrupted at any moment. No cleanup function call is - * required and the graph structure can be freed normally. + * Graph traversal can be interrupted at any moment. No cleanup function call + * is required and the graph structure can be freed normally. * * Helper functions can be used to find a link between two given pads, or a pad * connected to another pad through an enabled link + * media_entity_find_link() and media_entity_remote_pad() * - * media_entity_find_link(struct media_pad *source, - * struct media_pad *sink); - * - * media_entity_remote_pad(struct media_pad *pad); - * - * Refer to the kerneldoc documentation for more information. - * - * - * Use count and power handling - * ---------------------------- - * - * Due to the wide differences between drivers regarding power management needs, - * the media controller does not implement power management. However, the - * media_entity structure includes a use_count field that media drivers can use to - * track the number of users of every entity for power management needs. + * Use count and power handling: * - * The use_count field is owned by media drivers and must not be touched by entity - * drivers. Access to the field must be protected by the media device graph_mutex - * lock. + * Due to the wide differences between drivers regarding power management + * needs, the media controller does not implement power management. However, + * the &media_entity structure includes a use_count field that media drivers + * can use to track the number of users of every entity for power management + * needs. * + * The &media_entity.@use_count field is owned by media drivers and must not be + * touched by entity drivers. Access to the field must be protected by the + * &media_device.@graph_mutex lock. * - * Links setup - * ----------- + * Links setup: * * Link properties can be modified at runtime by calling + * media_entity_setup_link() * - * media_entity_setup_link(struct media_link *link, u32 flags); - * - * The flags argument contains the requested new link flags. - * - * The only configurable property is the ENABLED link flag to enable/disable a - * link. Links marked with the IMMUTABLE link flag can not be enabled or disabled. - * - * When a link is enabled or disabled, the media framework calls the - * link_setup operation for the two entities at the source and sink of the link, - * in that order. If the second link_setup call fails, another link_setup call is - * made on the first entity to restore the original link flags. - * - * Media device drivers can be notified of link setup operations by setting the - * media_device::link_notify pointer to a callback function. If provided, the - * notification callback will be called before enabling and after disabling - * links. - * - * Entity drivers must implement the link_setup operation if any of their links - * is non-immutable. The operation must either configure the hardware or store - * the configuration information to be applied later. - * - * Link configuration must not have any side effect on other links. If an enabled - * link at a sink pad prevents another link at the same pad from being enabled, - * the link_setup operation must return -EBUSY and can't implicitly disable the - * first enabled link. - * - * - * Pipelines and media streams - * --------------------------- + * Pipelines and media streams: * * When starting streaming, drivers must notify all entities in the pipeline to * prevent link states from being modified during streaming by calling - * - * media_entity_pipeline_start(struct media_entity *entity, - * struct media_pipeline *pipe); + * media_entity_pipeline_start(). * * The function will mark all entities connected to the given entity through * enabled links, either directly or indirectly, as streaming. * - * The media_pipeline instance pointed to by the pipe argument will be stored in - * every entity in the pipeline. Drivers should embed the media_pipeline structure - * in higher-level pipeline structures and can then access the pipeline through - * the media_entity pipe field. + * The &media_pipeline instance pointed to by the pipe argument will be stored + * in every entity in the pipeline. Drivers should embed the &media_pipeline + * structure in higher-level pipeline structures and can then access the + * pipeline through the &media_entity pipe field. * - * Calls to media_entity_pipeline_start() can be nested. The pipeline pointer must - * be identical for all nested calls to the function. + * Calls to media_entity_pipeline_start() can be nested. The pipeline pointer + * must be identical for all nested calls to the function. * * media_entity_pipeline_start() may return an error. In that case, it will * clean up any of the changes it did by itself. * * When stopping the stream, drivers must notify the entities with - * - * media_entity_pipeline_stop(struct media_entity *entity); + * media_entity_pipeline_stop(). * * If multiple calls to media_entity_pipeline_start() have been made the same - * number of media_entity_pipeline_stop() calls are required to stop streaming. The - * media_entity pipe field is reset to NULL on the last nested stop call. + * number of media_entity_pipeline_stop() calls are required to stop streaming. + * The &media_entity pipe field is reset to NULL on the last nested stop call. * - * Link configuration will fail with -EBUSY by default if either end of the link is - * a streaming entity. Links that can be modified while streaming must be marked - * with the MEDIA_LNK_FL_DYNAMIC flag. + * Link configuration will fail with -%EBUSY by default if either end of the + * link is a streaming entity. Links that can be modified while streaming must + * be marked with the %MEDIA_LNK_FL_DYNAMIC flag. * * If other operations need to be disallowed on streaming entities (such as * changing entities configuration parameters) drivers can explicitly check the * media_entity stream_count field to find out if an entity is streaming. This * operation must be done with the media_device graph_mutex held. * - * - * Link validation - * --------------- + * Link validation: * * Link validation is performed by media_entity_pipeline_start() for any * entity which has sink pads in the pipeline. The - * media_entity::link_validate() callback is used for that purpose. In - * link_validate() callback, entity driver should check that the properties of + * &media_entity.@link_validate() callback is used for that purpose. In + * @link_validate() callback, entity driver should check that the properties of * the source pad of the connected entity and its own sink pad match. It is up * to the type of the entity (and in the end, the properties of the hardware) * what matching actually means. @@ -484,13 +337,113 @@ struct media_device { /* media_devnode to media_device */ #define to_media_device(node) container_of(node, struct media_device, devnode) +/** + * __media_device_register() - Registers a media device element + * + * @mdev: pointer to struct &media_device + * @owner: should be filled with %THIS_MODULE + * + * Users, should, instead, call the media_device_register() macro. + * + * The caller is responsible for initializing the media_device structure before + * registration. The following fields must be set: + * + * - dev must point to the parent device (usually a &pci_dev, &usb_interface or + * &platform_device instance). + * + * - model must be filled with the device model name as a NUL-terminated UTF-8 + * string. The device/model revision must not be stored in this field. + * + * The following fields are optional: + * + * - serial is a unique serial number stored as a NUL-terminated ASCII string. + * The field is big enough to store a GUID in text form. If the hardware + * doesn't provide a unique serial number this field must be left empty. + * + * - bus_info represents the location of the device in the system as a + * NUL-terminated ASCII string. For PCI/PCIe devices bus_info must be set to + * "PCI:" (or "PCIe:") followed by the value of pci_name(). For USB devices, + * the usb_make_path() function must be used. This field is used by + * applications to distinguish between otherwise identical devices that don't + * provide a serial number. + * + * - hw_revision is the hardware device revision in a driver-specific format. + * When possible the revision should be formatted with the KERNEL_VERSION + * macro. + * + * - driver_version is formatted with the KERNEL_VERSION macro. The version + * minor must be incremented when new features are added to the userspace API + * without breaking binary compatibility. The version major must be + * incremented when binary compatibility is broken. + * + * Notes: + * + * Upon successful registration a character device named media[0-9]+ is created. + * The device major and minor numbers are dynamic. The model name is exported as + * a sysfs attribute. + * + * Unregistering a media device that hasn't been registered is *NOT* safe. + */ int __must_check __media_device_register(struct media_device *mdev, struct module *owner); #define media_device_register(mdev) __media_device_register(mdev, THIS_MODULE) + +/** + * __media_device_unregister() - Unegisters a media device element + * + * @mdev: pointer to struct &media_device + */ void media_device_unregister(struct media_device *mdev); +/** + * media_device_register_entity() - registers a media entity inside a + * previously registered media device. + * + * @mdev: pointer to struct &media_device + * @entity: pointer to struct &media_entity to be registered + * + * Entities are identified by a unique positive integer ID. The media + * controller framework will such ID automatically. IDs are not guaranteed + * to be contiguous, and the ID number can change on newer Kernel versions. + * So, neither the driver nor userspace should hardcode ID numbers to refer + * to the entities, but, instead, use the framework to find the ID, when + * needed. + * + * The media_entity name, type and flags fields should be initialized before + * calling media_device_register_entity(). Entities embedded in higher-level + * standard structures can have some of those fields set by the higher-level + * framework. + * + * If the device has pads, media_entity_pads_init() should be called before + * this function. Otherwise, the &media_entity.@pad and &media_entity.@num_pads + * should be zeroed before calling this function. + * + * Entities have flags that describe the entity capabilities and state: + * + * %MEDIA_ENT_FL_DEFAULT indicates the default entity for a given type. + * This can be used to report the default audio and video devices or the + * default camera sensor. + */ int __must_check media_device_register_entity(struct media_device *mdev, struct media_entity *entity); + +/* + * media_device_unregister_entity() - unregisters a media entity. + * + * @entity: pointer to struct &media_entity to be unregistered + * + * All links associated with the entity and all PADs are automatically + * unregistered from the media_device when this function is called. + * + * Unregistering an entity will not change the IDs of the other entities and + * the previoully used ID will never be reused for a newly registered entities. + * + * When a media device is unregistered, all its entities are unregistered + * automatically. No manual entities unregistration is then required. + * + * Note: the media_entity instance itself must be freed explicitly by + * the driver if required. + */ void media_device_unregister_entity(struct media_entity *entity); struct media_device *media_device_get_devres(struct device *dev); struct media_device *media_device_find_devres(struct device *dev); diff --git a/include/media/media-entity.h b/include/media/media-entity.h index e9bc5857899cd8..51a7353effd0ad 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -343,18 +343,112 @@ void media_gobj_init(struct media_device *mdev, struct media_gobj *gobj); void media_gobj_remove(struct media_gobj *gobj); +/** + * media_entity_pads_init() - Initialize the entity pads + * + * @entity: entity where the pads belong + * @num_pads: number of pads to be initialized + * @pads: pads array + * + * If no pads are needed, drivers could either directly fill + * &media_entity->@num_pads with 0 and &media_entity->@pads with NULL or call + * this function that will do the same. + * + * As the number of pads is known in advance, the pads array is not allocated + * dynamically but is managed by the entity driver. Most drivers will embed the + * pads array in a driver-specific structure, avoiding dynamic allocation. + * + * Drivers must set the direction of every pad in the pads array before calling + * media_entity_pads_init(). The function will initialize the other pads fields. + */ int media_entity_pads_init(struct media_entity *entity, u16 num_pads, struct media_pad *pads); +/** + * media_entity_cleanup() - free resources associated with an entity + * + * @entity: entity where the pads belong + * + * This function must be called during the cleanup phase after unregistering + * the entity (currently, it does nothing). + */ static inline void media_entity_cleanup(struct media_entity *entity) {}; +/** + * media_create_pad_link() - creates a link between two entities. + * + * @source: pointer to &media_entity of the source pad. + * @source_pad: number of the source pad in the pads array + * @sink: pointer to &media_entity of the sink pad. + * @sink_pad: number of the sink pad in the pads array. + * @flags: Link flags, as defined in include/uapi/linux/media.h. + * + * Valid values for flags: + * A %MEDIA_LNK_FL_ENABLED flag indicates that the link is enabled and can be + * used to transfer media data. When two or more links target a sink pad, + * only one of them can be enabled at a time. + * + * A %MEDIA_LNK_FL_IMMUTABLE flag indicates that the link enabled state can't + * be modified at runtime. If %MEDIA_LNK_FL_IMMUTABLE is set, then + * %MEDIA_LNK_FL_ENABLED must also be set since an immutable link is + * always enabled. + * + * NOTE: + * + * Before calling this function, media_entity_pads_init() and + * media_device_register_entity() should be called previously for both ends. + */ __must_check int media_create_pad_link(struct media_entity *source, u16 source_pad, struct media_entity *sink, u16 sink_pad, u32 flags); void __media_entity_remove_links(struct media_entity *entity); + +/** + * media_entity_remove_links() - remove all links associated with an entity + * + * @entity: pointer to &media_entity + * + * Note: this is called automatically when an entity is unregistered via + * media_device_register_entity(). + */ void media_entity_remove_links(struct media_entity *entity); int __media_entity_setup_link(struct media_link *link, u32 flags); + +/** + * media_entity_setup_link() - changes the link flags properties in runtime + * + * @link: pointer to &media_link + * @flags: the requested new link flags + * + * The only configurable property is the %MEDIA_LNK_FL_ENABLED link flag + * flag to enable/disable a link. Links marked with the + * %MEDIA_LNK_FL_IMMUTABLE link flag can not be enabled or disabled. + * + * When a link is enabled or disabled, the media framework calls the + * link_setup operation for the two entities at the source and sink of the + * link, in that order. If the second link_setup call fails, another + * link_setup call is made on the first entity to restore the original link + * flags. + * + * Media device drivers can be notified of link setup operations by setting the + * media_device::link_notify pointer to a callback function. If provided, the + * notification callback will be called before enabling and after disabling + * links. + * + * Entity drivers must implement the link_setup operation if any of their links + * is non-immutable. The operation must either configure the hardware or store + * the configuration information to be applied later. + * + * Link configuration must not have any side effect on other links. If an + * enabled link at a sink pad prevents another link at the same pad from + * being enabled, the link_setup operation must return -EBUSY and can't + * implicitly disable the first enabled link. + * + * NOTE: the valid values of the flags for the link is the same as described + * on media_create_pad_link(), for pad to pad links or the same as described + * on media_create_intf_link(), for interface to entity links. + */ int media_entity_setup_link(struct media_link *link, u32 flags); struct media_link *media_entity_find_link(struct media_pad *source, struct media_pad *sink); @@ -371,18 +465,72 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity, struct media_pipeline *pipe); void media_entity_pipeline_stop(struct media_entity *entity); +/** + * media_devnode_create() - creates and initializes a device node interface + * + * @mdev: pointer to struct &media_device + * @type: type of the interface, as given by MEDIA_INTF_T_* macros + * as defined in the uapi/media/media.h header. + * @flags: Interface flags as defined in uapi/media/media.h. + * @major: Device node major number. + * @minor: Device node minor number. + * + * Return: if succeeded, returns a pointer to the newly allocated + * &media_intf_devnode pointer. + */ struct media_intf_devnode * __must_check media_devnode_create(struct media_device *mdev, u32 type, u32 flags, u32 major, u32 minor); +/** + * media_devnode_remove() - removes a device node interface + * + * @devnode: pointer to &media_intf_devnode to be freed. + * + * When a device node interface is removed, all links to it are automatically + * removed. + */ void media_devnode_remove(struct media_intf_devnode *devnode); struct media_link * + +/** + * media_create_intf_link() - creates a link between an entity and an interface + * + * @entity: pointer to %media_entity + * @intf: pointer to %media_interface + * @flags: Link flags, as defined in include/uapi/linux/media.h. + * + * + * Valid values for flags: + * The %MEDIA_LNK_FL_ENABLED flag indicates that the interface is connected to + * the entity hardware. That's the default value for interfaces. An + * interface may be disabled if the hardware is busy due to the usage + * of some other interface that it is currently controlling the hardware. + * A typical example is an hybrid TV device that handle only one type of + * stream on a given time. So, when the digital TV is streaming, + * the V4L2 interfaces won't be enabled, as such device is not able to + * also stream analog TV or radio. + * + * Note: + * + * Before calling this function, media_devnode_create() should be called for + * the interface and media_device_register_entity() should be called for the + * interface that will be part of the link. + */ __must_check media_create_intf_link(struct media_entity *entity, struct media_interface *intf, u32 flags); void __media_remove_intf_link(struct media_link *link); void media_remove_intf_link(struct media_link *link); void __media_remove_intf_links(struct media_interface *intf); +/** + * media_remove_intf_links() - remove all links associated with an interface + * + * @intf: pointer to &media_interface + * + * Note: this is called automatically when an entity is unregistered via + * media_device_register_entity() and by media_devnode_remove(). + */ void media_remove_intf_links(struct media_interface *intf); -- cgit 1.2.3-korg From 97d0a70ae5e2391f213966a69c3b6f96f2c9f25b Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 11 Dec 2015 11:12:57 -0200 Subject: [media] media: remove extra blank lines No functional changes. Suggested-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 3 --- include/media/media-device.h | 2 -- 2 files changed, 5 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 849db4f6f1f370..5a5432524c102e 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -310,7 +310,6 @@ void media_entity_graph_walk_start(struct media_entity_graph *graph, } EXPORT_SYMBOL_GPL(media_entity_graph_walk_start); - /** * media_entity_graph_walk_next - Get the next entity in the graph * @graph: Media graph structure @@ -850,7 +849,6 @@ struct media_pad *media_entity_remote_pad(struct media_pad *pad) } EXPORT_SYMBOL_GPL(media_entity_remote_pad); - static void media_interface_init(struct media_device *mdev, struct media_interface *intf, u32 gobj_type, @@ -915,7 +913,6 @@ struct media_link *media_create_intf_link(struct media_entity *entity, } EXPORT_SYMBOL_GPL(media_create_intf_link); - void __media_remove_intf_link(struct media_link *link) { list_del(&link->list); diff --git a/include/media/media-device.h b/include/media/media-device.h index 65fdd44e05efa0..f9907a7728d466 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -463,8 +463,6 @@ struct media_device *media_device_find_devres(struct device *dev); /* Iterate over all links. */ #define media_device_for_each_link(link, mdev) \ list_for_each_entry(link, &(mdev)->links, graph_obj.list) - - #else static inline int media_device_register(struct media_device *mdev) { -- cgit 1.2.3-korg From 5abad22fd1402c23da1f6ade8cec59ac07a28fc5 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 11 Dec 2015 11:19:38 -0200 Subject: [media] media-entity: get rid of forward __media_entity_remove_link() declaration Move this function to happen earlier, in order to avoid a uneeded forward declaration. Suggested-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 67 +++++++++++++++++++++----------------------- 1 file changed, 32 insertions(+), 35 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 5a5432524c102e..452af1d5a20d9c 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -588,7 +588,38 @@ static struct media_link *media_add_link(struct list_head *head) } static void __media_entity_remove_link(struct media_entity *entity, - struct media_link *link); + struct media_link *link) +{ + struct media_link *rlink, *tmp; + struct media_entity *remote; + unsigned int r = 0; + + if (link->source->entity == entity) + remote = link->sink->entity; + else + remote = link->source->entity; + + list_for_each_entry_safe(rlink, tmp, &remote->links, list) { + if (rlink != link->reverse) { + r++; + continue; + } + + if (link->source->entity == entity) + remote->num_backlinks--; + + /* Remove the remote link */ + list_del(&rlink->list); + media_gobj_remove(&rlink->graph_obj); + kfree(rlink); + + if (--remote->num_links == 0) + break; + } + list_del(&link->list); + media_gobj_remove(&link->graph_obj); + kfree(link); +} int media_create_pad_link(struct media_entity *source, u16 source_pad, @@ -642,40 +673,6 @@ media_create_pad_link(struct media_entity *source, u16 source_pad, } EXPORT_SYMBOL_GPL(media_create_pad_link); -static void __media_entity_remove_link(struct media_entity *entity, - struct media_link *link) -{ - struct media_link *rlink, *tmp; - struct media_entity *remote; - unsigned int r = 0; - - if (link->source->entity == entity) - remote = link->sink->entity; - else - remote = link->source->entity; - - list_for_each_entry_safe(rlink, tmp, &remote->links, list) { - if (rlink != link->reverse) { - r++; - continue; - } - - if (link->source->entity == entity) - remote->num_backlinks--; - - /* Remove the remote link */ - list_del(&rlink->list); - media_gobj_remove(&rlink->graph_obj); - kfree(rlink); - - if (--remote->num_links == 0) - break; - } - list_del(&link->list); - media_gobj_remove(&link->graph_obj); - kfree(link); -} - void __media_entity_remove_links(struct media_entity *entity) { struct media_link *link, *tmp; -- cgit 1.2.3-korg From 58f69ee9da3a2486450dac626c352f69faf964e9 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 11 Dec 2015 11:25:23 -0200 Subject: [media] media_entity: get rid of a unused var > > > + if (rlink != link->reverse) { > > > + r++; > > > > The variable is incremented here but otherwise never used, you can remove it. Suggested-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 452af1d5a20d9c..57de11281af1c8 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -592,7 +592,6 @@ static void __media_entity_remove_link(struct media_entity *entity, { struct media_link *rlink, *tmp; struct media_entity *remote; - unsigned int r = 0; if (link->source->entity == entity) remote = link->sink->entity; @@ -600,10 +599,8 @@ static void __media_entity_remove_link(struct media_entity *entity, remote = link->source->entity; list_for_each_entry_safe(rlink, tmp, &remote->links, list) { - if (rlink != link->reverse) { - r++; + if (rlink != link->reverse) continue; - } if (link->source->entity == entity) remote->num_backlinks--; -- cgit 1.2.3-korg From c350ef830f2c3dfe80e9a777c8a64ac1fb186b9a Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 11 Dec 2015 11:55:40 -0200 Subject: [media] media_entity: rename media_obj functions to *_create *_destroy Those media_obj_* functions are actually creating/destroying media graph objects. So, rename them to better represent what they're actually doing. No functional changes. This was created via this small shell script: for i in $(git grep -l media_gobj_init); do sed s,media_gobj_init,media_gobj_create,g <$i >a && mv a $i; done for i in $(git grep -l media_gobj_remove); do sed s,media_gobj_remove,media_gobj_destroy,g <$i >a && mv a $i; done Suggested-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 10 +++++----- drivers/media/media-entity.c | 26 +++++++++++++------------- include/media/media-entity.h | 4 ++-- 3 files changed, 20 insertions(+), 20 deletions(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 537160bb461e07..f09f3a6f9c50b6 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -591,7 +591,7 @@ void media_device_unregister(struct media_device *mdev) list_for_each_entry_safe(intf, tmp_intf, &mdev->interfaces, graph_obj.list) { __media_remove_intf_links(intf); - media_gobj_remove(&intf->graph_obj); + media_gobj_destroy(&intf->graph_obj); kfree(intf); } spin_unlock(&mdev->lock); @@ -628,11 +628,11 @@ int __must_check media_device_register_entity(struct media_device *mdev, spin_lock(&mdev->lock); /* Initialize media_gobj embedded at the entity */ - media_gobj_init(mdev, MEDIA_GRAPH_ENTITY, &entity->graph_obj); + media_gobj_create(mdev, MEDIA_GRAPH_ENTITY, &entity->graph_obj); /* Initialize objects at the pads */ for (i = 0; i < entity->num_pads; i++) - media_gobj_init(mdev, MEDIA_GRAPH_PAD, + media_gobj_create(mdev, MEDIA_GRAPH_PAD, &entity->pads[i].graph_obj); spin_unlock(&mdev->lock); @@ -673,10 +673,10 @@ void media_device_unregister_entity(struct media_entity *entity) /* Remove all pads that belong to this entity */ for (i = 0; i < entity->num_pads; i++) - media_gobj_remove(&entity->pads[i].graph_obj); + media_gobj_destroy(&entity->pads[i].graph_obj); /* Remove the entity */ - media_gobj_remove(&entity->graph_obj); + media_gobj_destroy(&entity->graph_obj); spin_unlock(&mdev->lock); entity->graph_obj.mdev = NULL; diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 57de11281af1c8..861c8e7b877352 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -134,7 +134,7 @@ static void dev_dbg_obj(const char *event_name, struct media_gobj *gobj) } /** - * media_gobj_init - Initialize a graph object + * media_gobj_create - Initialize a graph object * * @mdev: Pointer to the media_device that contains the object * @type: Type of the object @@ -146,7 +146,7 @@ static void dev_dbg_obj(const char *event_name, struct media_gobj *gobj) * is embedded on some other object, this function should be called before * registering the object at the media controller. */ -void media_gobj_init(struct media_device *mdev, +void media_gobj_create(struct media_device *mdev, enum media_gobj_type type, struct media_gobj *gobj) { @@ -180,13 +180,13 @@ void media_gobj_init(struct media_device *mdev, } /** - * media_gobj_remove - Stop using a graph object on a media device + * media_gobj_destroy - Stop using a graph object on a media device * * @graph_obj: Pointer to the object * * This should be called at media_device_unregister_*() routines */ -void media_gobj_remove(struct media_gobj *gobj) +void media_gobj_destroy(struct media_gobj *gobj) { dev_dbg_obj(__func__, gobj); @@ -235,7 +235,7 @@ media_entity_pads_init(struct media_entity *entity, u16 num_pads, pads[i].entity = entity; pads[i].index = i; if (mdev) - media_gobj_init(mdev, MEDIA_GRAPH_PAD, + media_gobj_create(mdev, MEDIA_GRAPH_PAD, &entity->pads[i].graph_obj); } @@ -607,14 +607,14 @@ static void __media_entity_remove_link(struct media_entity *entity, /* Remove the remote link */ list_del(&rlink->list); - media_gobj_remove(&rlink->graph_obj); + media_gobj_destroy(&rlink->graph_obj); kfree(rlink); if (--remote->num_links == 0) break; } list_del(&link->list); - media_gobj_remove(&link->graph_obj); + media_gobj_destroy(&link->graph_obj); kfree(link); } @@ -638,7 +638,7 @@ media_create_pad_link(struct media_entity *source, u16 source_pad, link->flags = flags; /* Initialize graph object embedded at the new link */ - media_gobj_init(source->graph_obj.mdev, MEDIA_GRAPH_LINK, + media_gobj_create(source->graph_obj.mdev, MEDIA_GRAPH_LINK, &link->graph_obj); /* Create the backlink. Backlinks are used to help graph traversal and @@ -656,7 +656,7 @@ media_create_pad_link(struct media_entity *source, u16 source_pad, backlink->is_backlink = true; /* Initialize graph object embedded at the new link */ - media_gobj_init(sink->graph_obj.mdev, MEDIA_GRAPH_LINK, + media_gobj_create(sink->graph_obj.mdev, MEDIA_GRAPH_LINK, &backlink->graph_obj); link->reverse = backlink; @@ -852,7 +852,7 @@ static void media_interface_init(struct media_device *mdev, intf->flags = flags; INIT_LIST_HEAD(&intf->links); - media_gobj_init(mdev, gobj_type, &intf->graph_obj); + media_gobj_create(mdev, gobj_type, &intf->graph_obj); } /* Functions related to the media interface via device nodes */ @@ -880,7 +880,7 @@ EXPORT_SYMBOL_GPL(media_devnode_create); void media_devnode_remove(struct media_intf_devnode *devnode) { media_remove_intf_links(&devnode->intf); - media_gobj_remove(&devnode->intf.graph_obj); + media_gobj_destroy(&devnode->intf.graph_obj); kfree(devnode); } EXPORT_SYMBOL_GPL(media_devnode_remove); @@ -900,7 +900,7 @@ struct media_link *media_create_intf_link(struct media_entity *entity, link->flags = flags; /* Initialize graph object embedded at the new link */ - media_gobj_init(intf->graph_obj.mdev, MEDIA_GRAPH_LINK, + media_gobj_create(intf->graph_obj.mdev, MEDIA_GRAPH_LINK, &link->graph_obj); return link; @@ -910,7 +910,7 @@ EXPORT_SYMBOL_GPL(media_create_intf_link); void __media_remove_intf_link(struct media_link *link) { list_del(&link->list); - media_gobj_remove(&link->graph_obj); + media_gobj_destroy(&link->graph_obj); kfree(link); } EXPORT_SYMBOL_GPL(__media_remove_intf_link); diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 51a7353effd0ad..1b954fb88def57 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -338,10 +338,10 @@ struct media_entity_graph { #define intf_to_devnode(intf) \ container_of(intf, struct media_intf_devnode, intf) -void media_gobj_init(struct media_device *mdev, +void media_gobj_create(struct media_device *mdev, enum media_gobj_type type, struct media_gobj *gobj); -void media_gobj_remove(struct media_gobj *gobj); +void media_gobj_destroy(struct media_gobj *gobj); /** * media_entity_pads_init() - Initialize the entity pads -- cgit 1.2.3-korg From 1fc25d30a40c27b85510e6e598aec629532eb85c Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 11 Dec 2015 12:14:58 -0200 Subject: [media] media-entity.h: move kernel-doc tags from media-entity.c Several additional functions are described at media-entity.c. Moving them to the header file, to make the code cleaner and to have all such macros at the same place. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 163 +++---------------------------------------- include/media/media-entity.h | 136 +++++++++++++++++++++++++++++++++++- 2 files changed, 145 insertions(+), 154 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 861c8e7b877352..ada2b44ea4e15d 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -26,15 +26,6 @@ #include #include -/** - * dev_dbg_obj - Prints in debug mode a change on some object - * - * @event_name: Name of the event to report. Could be __func__ - * @gobj: Pointer to the object - * - * Enabled only if DEBUG or CONFIG_DYNAMIC_DEBUG. Otherwise, it - * won't produce any code. - */ static inline const char *gobj_type(enum media_gobj_type type) { switch (type) { @@ -79,6 +70,15 @@ static inline const char *intf_type(struct media_interface *intf) } }; +/** + * dev_dbg_obj - Prints in debug mode a change on some object + * + * @event_name: Name of the event to report. Could be __func__ + * @gobj: Pointer to the object + * + * Enabled only if DEBUG or CONFIG_DYNAMIC_DEBUG. Otherwise, it + * won't produce any code. + */ static void dev_dbg_obj(const char *event_name, struct media_gobj *gobj) { #if defined(DEBUG) || defined (CONFIG_DYNAMIC_DEBUG) @@ -133,19 +133,6 @@ static void dev_dbg_obj(const char *event_name, struct media_gobj *gobj) #endif } -/** - * media_gobj_create - Initialize a graph object - * - * @mdev: Pointer to the media_device that contains the object - * @type: Type of the object - * @gobj: Pointer to the object - * - * This routine initializes the embedded struct media_gobj inside a - * media graph object. It is called automatically if media_*_create() - * calls are used. However, if the object (entity, link, pad, interface) - * is embedded on some other object, this function should be called before - * registering the object at the media controller. - */ void media_gobj_create(struct media_device *mdev, enum media_gobj_type type, struct media_gobj *gobj) @@ -179,13 +166,6 @@ void media_gobj_create(struct media_device *mdev, dev_dbg_obj(__func__, gobj); } -/** - * media_gobj_destroy - Stop using a graph object on a media device - * - * @graph_obj: Pointer to the object - * - * This should be called at media_device_unregister_*() routines - */ void media_gobj_destroy(struct media_gobj *gobj) { dev_dbg_obj(__func__, gobj); @@ -196,31 +176,8 @@ void media_gobj_destroy(struct media_gobj *gobj) list_del(&gobj->list); } -/** - * media_entity_pads_init - Initialize a media entity - * - * @num_pads: Total number of sink and source pads. - * @pads: Array of 'num_pads' pads. - * - * The total number of pads is an intrinsic property of entities known by the - * entity driver, while the total number of links depends on hardware design - * and is an extrinsic property unknown to the entity driver. However, in most - * use cases the number of links can safely be assumed to be equal to or - * larger than the number of pads. - * - * For those reasons the links array can be preallocated based on the number - * of pads and will be reallocated later if extra links need to be created. - * - * This function allocates a links array with enough space to hold at least - * 'num_pads' elements. The media_entity::max_links field will be set to the - * number of allocated elements. - * - * The pads array is managed by the entity driver and passed to - * media_entity_pads_init() where its pointer will be stored in the entity structure. - */ -int -media_entity_pads_init(struct media_entity *entity, u16 num_pads, - struct media_pad *pads) +int media_entity_pads_init(struct media_entity *entity, u16 num_pads, + struct media_pad *pads) { struct media_device *mdev = entity->graph_obj.mdev; unsigned int i; @@ -285,16 +242,6 @@ static struct media_entity *stack_pop(struct media_entity_graph *graph) #define link_top(en) ((en)->stack[(en)->top].link) #define stack_top(en) ((en)->stack[(en)->top].entity) -/** - * media_entity_graph_walk_start - Start walking the media graph at a given entity - * @graph: Media graph structure that will be used to walk the graph - * @entity: Starting entity - * - * This function initializes the graph traversal structure to walk the entities - * graph starting at the given entity. The traversal structure must not be - * modified by the caller during graph traversal. When done the structure can - * safely be freed. - */ void media_entity_graph_walk_start(struct media_entity_graph *graph, struct media_entity *entity) { @@ -310,18 +257,6 @@ void media_entity_graph_walk_start(struct media_entity_graph *graph, } EXPORT_SYMBOL_GPL(media_entity_graph_walk_start); -/** - * media_entity_graph_walk_next - Get the next entity in the graph - * @graph: Media graph structure - * - * Perform a depth-first traversal of the given media entities graph. - * - * The graph structure must have been previously initialized with a call to - * media_entity_graph_walk_start(). - * - * Return the next entity in the graph or NULL if the whole graph have been - * traversed. - */ struct media_entity * media_entity_graph_walk_next(struct media_entity_graph *graph) { @@ -370,20 +305,6 @@ EXPORT_SYMBOL_GPL(media_entity_graph_walk_next); * Pipeline management */ -/** - * media_entity_pipeline_start - Mark a pipeline as streaming - * @entity: Starting entity - * @pipe: Media pipeline to be assigned to all entities in the pipeline. - * - * Mark all entities connected to a given entity through enabled links, either - * directly or indirectly, as streaming. The given pipeline object is assigned to - * every entity in the pipeline and stored in the media_entity pipe field. - * - * Calls to this function can be nested, in which case the same number of - * media_entity_pipeline_stop() calls will be required to stop streaming. The - * pipeline pointer must be identical for all nested calls to - * media_entity_pipeline_start(). - */ __must_check int media_entity_pipeline_start(struct media_entity *entity, struct media_pipeline *pipe) { @@ -494,18 +415,6 @@ error: } EXPORT_SYMBOL_GPL(media_entity_pipeline_start); -/** - * media_entity_pipeline_stop - Mark a pipeline as not streaming - * @entity: Starting entity - * - * Mark all entities connected to a given entity through enabled links, either - * directly or indirectly, as not streaming. The media_entity pipe field is - * reset to NULL. - * - * If multiple calls to media_entity_pipeline_start() have been made, the same - * number of calls to this function are required to mark the pipeline as not - * streaming. - */ void media_entity_pipeline_stop(struct media_entity *entity) { struct media_device *mdev = entity->graph_obj.mdev; @@ -529,16 +438,6 @@ EXPORT_SYMBOL_GPL(media_entity_pipeline_stop); * Module use count */ -/* - * media_entity_get - Get a reference to the parent module - * @entity: The entity - * - * Get a reference to the parent media device module. - * - * The function will return immediately if @entity is NULL. - * - * Return a pointer to the entity on success or NULL on failure. - */ struct media_entity *media_entity_get(struct media_entity *entity) { if (entity == NULL) @@ -552,14 +451,6 @@ struct media_entity *media_entity_get(struct media_entity *entity) } EXPORT_SYMBOL_GPL(media_entity_get); -/* - * media_entity_put - Release the reference to the parent module - * @entity: The entity - * - * Release the reference count acquired by media_entity_get(). - * - * The function will return immediately if @entity is NULL. - */ void media_entity_put(struct media_entity *entity) { if (entity == NULL) @@ -718,20 +609,6 @@ static int __media_entity_setup_link_notify(struct media_link *link, u32 flags) return 0; } -/** - * __media_entity_setup_link - Configure a media link - * @link: The link being configured - * @flags: Link configuration flags - * - * The bulk of link setup is handled by the two entities connected through the - * link. This function notifies both entities of the link configuration change. - * - * If the link is immutable or if the current and new configuration are - * identical, return immediately. - * - * The user is expected to hold link->source->parent->mutex. If not, - * media_entity_setup_link() should be used instead. - */ int __media_entity_setup_link(struct media_link *link, u32 flags) { const u32 mask = MEDIA_LNK_FL_ENABLED; @@ -788,14 +665,6 @@ int media_entity_setup_link(struct media_link *link, u32 flags) } EXPORT_SYMBOL_GPL(media_entity_setup_link); -/** - * media_entity_find_link - Find a link between two pads - * @source: Source pad - * @sink: Sink pad - * - * Return a pointer to the link between the two entities. If no such link - * exists, return NULL. - */ struct media_link * media_entity_find_link(struct media_pad *source, struct media_pad *sink) { @@ -813,16 +682,6 @@ media_entity_find_link(struct media_pad *source, struct media_pad *sink) } EXPORT_SYMBOL_GPL(media_entity_find_link); -/** - * media_entity_remote_pad - Find the pad at the remote end of a link - * @pad: Pad at the local end of the link - * - * Search for a remote pad connected to the given pad by iterating over all - * links originating or terminating at that pad until an enabled link is found. - * - * Return a pointer to the pad at the remote end of the first found enabled - * link, or NULL if no enabled link has been found. - */ struct media_pad *media_entity_remote_pad(struct media_pad *pad) { struct media_link *link; diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 1b954fb88def57..d073b205e6a6da 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -338,17 +338,43 @@ struct media_entity_graph { #define intf_to_devnode(intf) \ container_of(intf, struct media_intf_devnode, intf) +/** + * media_gobj_create - Initialize a graph object + * + * @mdev: Pointer to the media_device that contains the object + * @type: Type of the object + * @gobj: Pointer to the graph object + * + * This routine initializes the embedded struct media_gobj inside a + * media graph object. It is called automatically if media_*_create() + * calls are used. However, if the object (entity, link, pad, interface) + * is embedded on some other object, this function should be called before + * registering the object at the media controller. + */ void media_gobj_create(struct media_device *mdev, enum media_gobj_type type, struct media_gobj *gobj); + +/** + * media_gobj_destroy - Stop using a graph object on a media device + * + * @gobj: Pointer to the graph object + * + * This should be called by all routines like media_device_unregister() + * that remove/destroy media graph objects. + */ void media_gobj_destroy(struct media_gobj *gobj); /** * media_entity_pads_init() - Initialize the entity pads * * @entity: entity where the pads belong - * @num_pads: number of pads to be initialized - * @pads: pads array + * @num_pads: total number of sink and source pads + * @pads: Array of @num_pads pads. + * + * The pads array is managed by the entity driver and passed to + * media_entity_pads_init() where its pointer will be stored in the entity + * structure. * * If no pads are needed, drivers could either directly fill * &media_entity->@num_pads with 0 and &media_entity->@pads with NULL or call @@ -413,6 +439,20 @@ void __media_entity_remove_links(struct media_entity *entity); */ void media_entity_remove_links(struct media_entity *entity); +/** + * __media_entity_setup_link - Configure a media link without locking + * @link: The link being configured + * @flags: Link configuration flags + * + * The bulk of link setup is handled by the two entities connected through the + * link. This function notifies both entities of the link configuration change. + * + * If the link is immutable or if the current and new configuration are + * identical, return immediately. + * + * The user is expected to hold link->source->parent->mutex. If not, + * media_entity_setup_link() should be used instead. + */ int __media_entity_setup_link(struct media_link *link, u32 flags); /** @@ -450,19 +490,111 @@ int __media_entity_setup_link(struct media_link *link, u32 flags); * on media_create_intf_link(), for interface to entity links. */ int media_entity_setup_link(struct media_link *link, u32 flags); + +/** + * media_entity_find_link - Find a link between two pads + * @source: Source pad + * @sink: Sink pad + * + * Return a pointer to the link between the two entities. If no such link + * exists, return NULL. + */ struct media_link *media_entity_find_link(struct media_pad *source, struct media_pad *sink); + +/** + * media_entity_remote_pad - Find the pad at the remote end of a link + * @pad: Pad at the local end of the link + * + * Search for a remote pad connected to the given pad by iterating over all + * links originating or terminating at that pad until an enabled link is found. + * + * Return a pointer to the pad at the remote end of the first found enabled + * link, or NULL if no enabled link has been found. + */ struct media_pad *media_entity_remote_pad(struct media_pad *pad); +/** + * media_entity_get - Get a reference to the parent module + * + * @entity: The entity + * + * Get a reference to the parent media device module. + * + * The function will return immediately if @entity is NULL. + * + * Return a pointer to the entity on success or NULL on failure. + */ struct media_entity *media_entity_get(struct media_entity *entity); + +/** + * media_entity_put - Release the reference to the parent module + * + * @entity: The entity + * + * Release the reference count acquired by media_entity_get(). + * + * The function will return immediately if @entity is NULL. + */ void media_entity_put(struct media_entity *entity); +/** + * media_entity_graph_walk_start - Start walking the media graph at a given entity + * @graph: Media graph structure that will be used to walk the graph + * @entity: Starting entity + * + * This function initializes the graph traversal structure to walk the entities + * graph starting at the given entity. The traversal structure must not be + * modified by the caller during graph traversal. When done the structure can + * safely be freed. + */ void media_entity_graph_walk_start(struct media_entity_graph *graph, struct media_entity *entity); + +/** + * media_entity_graph_walk_next - Get the next entity in the graph + * @graph: Media graph structure + * + * Perform a depth-first traversal of the given media entities graph. + * + * The graph structure must have been previously initialized with a call to + * media_entity_graph_walk_start(). + * + * Return the next entity in the graph or NULL if the whole graph have been + * traversed. + */ struct media_entity * media_entity_graph_walk_next(struct media_entity_graph *graph); + +/** + * media_entity_pipeline_start - Mark a pipeline as streaming + * @entity: Starting entity + * @pipe: Media pipeline to be assigned to all entities in the pipeline. + * + * Mark all entities connected to a given entity through enabled links, either + * directly or indirectly, as streaming. The given pipeline object is assigned to + * every entity in the pipeline and stored in the media_entity pipe field. + * + * Calls to this function can be nested, in which case the same number of + * media_entity_pipeline_stop() calls will be required to stop streaming. The + * pipeline pointer must be identical for all nested calls to + * media_entity_pipeline_start(). + */ __must_check int media_entity_pipeline_start(struct media_entity *entity, struct media_pipeline *pipe); + +/** + * media_entity_pipeline_stop - Mark a pipeline as not streaming + * @entity: Starting entity + * + * Mark all entities connected to a given entity through enabled links, either + * directly or indirectly, as not streaming. The media_entity pipe field is + * reset to NULL. + * + * If multiple calls to media_entity_pipeline_start() have been made, the same + * number of calls to this function are required to mark the pipeline as not + * streaming. + */ void media_entity_pipeline_stop(struct media_entity *entity); /** -- cgit 1.2.3-korg From 829de29bfe5a0568831f1c52a760306d642d99d4 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 11 Dec 2015 12:23:23 -0200 Subject: [media] media: use unsigned for pad index The pad index is unsigned. Replace the occurences of it where pertinent. Suggested-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/omap3isp/ispccdc.c | 2 +- drivers/media/platform/omap3isp/ispccp2.c | 2 +- drivers/media/platform/omap3isp/ispcsi2.c | 2 +- drivers/media/platform/omap3isp/isppreview.c | 2 +- drivers/media/platform/omap3isp/ispresizer.c | 2 +- drivers/staging/media/davinci_vpfe/dm365_ipipeif.c | 2 +- drivers/staging/media/davinci_vpfe/dm365_isif.c | 2 +- drivers/staging/media/davinci_vpfe/dm365_resizer.c | 2 +- drivers/staging/media/omap4iss/iss_csi2.c | 2 +- drivers/staging/media/omap4iss/iss_ipipeif.c | 2 +- drivers/staging/media/omap4iss/iss_resizer.c | 2 +- 11 files changed, 11 insertions(+), 11 deletions(-) diff --git a/drivers/media/platform/omap3isp/ispccdc.c b/drivers/media/platform/omap3isp/ispccdc.c index dae674cd3f74e3..749462c1af8e9d 100644 --- a/drivers/media/platform/omap3isp/ispccdc.c +++ b/drivers/media/platform/omap3isp/ispccdc.c @@ -2513,7 +2513,7 @@ static int ccdc_link_setup(struct media_entity *entity, struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); struct isp_device *isp = to_isp_device(ccdc); - int index = local->index; + unsigned int index = local->index; /* FIXME: this is actually a hack! */ if (is_media_entity_v4l2_subdev(remote->entity)) diff --git a/drivers/media/platform/omap3isp/ispccp2.c b/drivers/media/platform/omap3isp/ispccp2.c index 0c790b25f6f9bb..59686dd1bb0a2b 100644 --- a/drivers/media/platform/omap3isp/ispccp2.c +++ b/drivers/media/platform/omap3isp/ispccp2.c @@ -956,7 +956,7 @@ static int ccp2_link_setup(struct media_entity *entity, { struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd); - int index = local->index; + unsigned int index = local->index; /* FIXME: this is actually a hack! */ if (is_media_entity_v4l2_subdev(remote->entity)) diff --git a/drivers/media/platform/omap3isp/ispcsi2.c b/drivers/media/platform/omap3isp/ispcsi2.c index f50f6b305204cb..886f148755b0c9 100644 --- a/drivers/media/platform/omap3isp/ispcsi2.c +++ b/drivers/media/platform/omap3isp/ispcsi2.c @@ -1144,7 +1144,7 @@ static int csi2_link_setup(struct media_entity *entity, struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct isp_csi2_device *csi2 = v4l2_get_subdevdata(sd); struct isp_csi2_ctrl_cfg *ctrl = &csi2->ctrl; - int index = local->index; + unsigned int index = local->index; /* * The ISP core doesn't support pipelines with multiple video outputs. diff --git a/drivers/media/platform/omap3isp/isppreview.c b/drivers/media/platform/omap3isp/isppreview.c index c300cb7219e9ff..e15ad4133632b2 100644 --- a/drivers/media/platform/omap3isp/isppreview.c +++ b/drivers/media/platform/omap3isp/isppreview.c @@ -2144,7 +2144,7 @@ static int preview_link_setup(struct media_entity *entity, { struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct isp_prev_device *prev = v4l2_get_subdevdata(sd); - int index = local->index; + unsigned int index = local->index; /* FIXME: this is actually a hack! */ if (is_media_entity_v4l2_subdev(remote->entity)) diff --git a/drivers/media/platform/omap3isp/ispresizer.c b/drivers/media/platform/omap3isp/ispresizer.c index cd0a9f6e1fedf8..20b98d876d7edd 100644 --- a/drivers/media/platform/omap3isp/ispresizer.c +++ b/drivers/media/platform/omap3isp/ispresizer.c @@ -1623,7 +1623,7 @@ static int resizer_link_setup(struct media_entity *entity, { struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct isp_res_device *res = v4l2_get_subdevdata(sd); - int index = local->index; + unsigned int index = local->index; /* FIXME: this is actually a hack! */ if (is_media_entity_v4l2_subdev(remote->entity)) diff --git a/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c b/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c index a54c60fce3d5b1..633d6456fdce6b 100644 --- a/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c +++ b/drivers/staging/media/davinci_vpfe/dm365_ipipeif.c @@ -885,7 +885,7 @@ ipipeif_link_setup(struct media_entity *entity, const struct media_pad *local, struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct vpfe_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd); struct vpfe_device *vpfe = to_vpfe_device(ipipeif); - int index = local->index; + unsigned int index = local->index; /* FIXME: this is actually a hack! */ if (is_media_entity_v4l2_subdev(remote->entity)) diff --git a/drivers/staging/media/davinci_vpfe/dm365_isif.c b/drivers/staging/media/davinci_vpfe/dm365_isif.c index b35667afb73f61..99057892d88d39 100644 --- a/drivers/staging/media/davinci_vpfe/dm365_isif.c +++ b/drivers/staging/media/davinci_vpfe/dm365_isif.c @@ -1707,7 +1707,7 @@ isif_link_setup(struct media_entity *entity, const struct media_pad *local, { struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct vpfe_isif_device *isif = v4l2_get_subdevdata(sd); - int index = local->index; + unsigned int index = local->index; /* FIXME: this is actually a hack! */ if (is_media_entity_v4l2_subdev(remote->entity)) diff --git a/drivers/staging/media/davinci_vpfe/dm365_resizer.c b/drivers/staging/media/davinci_vpfe/dm365_resizer.c index 669ae3f9791fd3..a91395ce91e1d8 100644 --- a/drivers/staging/media/davinci_vpfe/dm365_resizer.c +++ b/drivers/staging/media/davinci_vpfe/dm365_resizer.c @@ -1648,7 +1648,7 @@ static int resizer_link_setup(struct media_entity *entity, struct vpfe_device *vpfe_dev = to_vpfe_device(resizer); u16 ipipeif_source = vpfe_dev->vpfe_ipipeif.output; u16 ipipe_source = vpfe_dev->vpfe_ipipe.output; - int index = local->index; + unsigned int index = local->index; /* FIXME: this is actually a hack! */ if (is_media_entity_v4l2_subdev(remote->entity)) diff --git a/drivers/staging/media/omap4iss/iss_csi2.c b/drivers/staging/media/omap4iss/iss_csi2.c index 226366a036619d..f0fa037ce173f3 100644 --- a/drivers/staging/media/omap4iss/iss_csi2.c +++ b/drivers/staging/media/omap4iss/iss_csi2.c @@ -1170,7 +1170,7 @@ static int csi2_link_setup(struct media_entity *entity, struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct iss_csi2_device *csi2 = v4l2_get_subdevdata(sd); struct iss_csi2_ctrl_cfg *ctrl = &csi2->ctrl; - int index = local->index; + unsigned int index = local->index; /* FIXME: this is actually a hack! */ if (is_media_entity_v4l2_subdev(remote->entity)) diff --git a/drivers/staging/media/omap4iss/iss_ipipeif.c b/drivers/staging/media/omap4iss/iss_ipipeif.c index c2b5638a089885..88b22f7f8b133f 100644 --- a/drivers/staging/media/omap4iss/iss_ipipeif.c +++ b/drivers/staging/media/omap4iss/iss_ipipeif.c @@ -662,7 +662,7 @@ static int ipipeif_link_setup(struct media_entity *entity, struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd); struct iss_device *iss = to_iss_device(ipipeif); - int index = local->index; + unsigned int index = local->index; /* FIXME: this is actually a hack! */ if (is_media_entity_v4l2_subdev(remote->entity)) diff --git a/drivers/staging/media/omap4iss/iss_resizer.c b/drivers/staging/media/omap4iss/iss_resizer.c index fea13ab4041f6b..fe7b253bb0d320 100644 --- a/drivers/staging/media/omap4iss/iss_resizer.c +++ b/drivers/staging/media/omap4iss/iss_resizer.c @@ -716,7 +716,7 @@ static int resizer_link_setup(struct media_entity *entity, struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct iss_resizer_device *resizer = v4l2_get_subdevdata(sd); struct iss_device *iss = to_iss_device(resizer); - int index = local->index; + unsigned int index = local->index; /* FIXME: this is actually a hack! */ if (is_media_entity_v4l2_subdev(remote->entity)) -- cgit 1.2.3-korg From d1b9da2d606ecec587177c4c90f1905c57538149 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 11 Dec 2015 12:41:12 -0200 Subject: [media] media-device.h: Let clearer that entity function must be initialized Improve the documentation to let it clear that the entity function must be initialized. Suggested-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- include/media/media-device.h | 4 ++++ include/uapi/linux/media.h | 2 +- 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/include/media/media-device.h b/include/media/media-device.h index f9907a7728d466..215a0d88241d46 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -423,6 +423,10 @@ void media_device_unregister(struct media_device *mdev); * %MEDIA_ENT_FL_DEFAULT indicates the default entity for a given type. * This can be used to report the default audio and video devices or the * default camera sensor. + * + * NOTE: Drivers should set the entity function before calling this function. + * Please notice that the values %MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN and + * %MEDIA_ENT_F_UNKNOWN should not be used by the drivers. */ int __must_check media_device_register_entity(struct media_device *mdev, struct media_entity *entity); diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h index ff6a8010c5200b..8d8e1a3e6e1af7 100644 --- a/include/uapi/linux/media.h +++ b/include/uapi/linux/media.h @@ -92,7 +92,7 @@ struct media_device_info { * * Subdevs are initialized with MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN, * in order to preserve backward compatibility. - * Drivers should change to the proper subdev type before + * Drivers must change to the proper subdev type before * registering the entity. */ -- cgit 1.2.3-korg From b3b7a9f138b7539c25e036d398616f6737b08ff7 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 11 Dec 2015 16:07:57 -0200 Subject: [media] media-device: Use u64 ints for pointers By using u64 integers and pointers, we can get rid of compat32 logic. So, let's do it! Suggested-by: Arnd Bergmann Suggested-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 77 +++++++++++++++++++++++--------------------- include/uapi/linux/media.h | 32 +++++++++--------- 2 files changed, 58 insertions(+), 51 deletions(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index f09f3a6f9c50b6..6406914a9bf59c 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -240,10 +240,10 @@ static long __media_device_get_topology(struct media_device *mdev, struct media_interface *intf; struct media_pad *pad; struct media_link *link; - struct media_v2_entity uentity; - struct media_v2_interface uintf; - struct media_v2_pad upad; - struct media_v2_link ulink; + struct media_v2_entity kentity, *uentity; + struct media_v2_interface kintf, *uintf; + struct media_v2_pad kpad, *upad; + struct media_v2_link klink, *ulink; unsigned int i; int ret = 0; @@ -251,10 +251,10 @@ static long __media_device_get_topology(struct media_device *mdev, /* Get entities and number of entities */ i = 0; + uentity = media_get_uptr(topo->ptr_entities); media_device_for_each_entity(entity, mdev) { i++; - - if (ret || !topo->entities) + if (ret || !uentity) continue; if (i > topo->num_entities) { @@ -263,23 +263,24 @@ static long __media_device_get_topology(struct media_device *mdev, } /* Copy fields to userspace struct if not error */ - memset(&uentity, 0, sizeof(uentity)); - uentity.id = entity->graph_obj.id; - uentity.function = entity->function; - strncpy(uentity.name, entity->name, - sizeof(uentity.name)); + memset(&kentity, 0, sizeof(kentity)); + kentity.id = entity->graph_obj.id; + kentity.function = entity->function; + strncpy(kentity.name, entity->name, + sizeof(kentity.name)); - if (copy_to_user(&topo->entities[i - 1], &uentity, sizeof(uentity))) + if (copy_to_user(uentity, &kentity, sizeof(kentity))) ret = -EFAULT; + uentity++; } topo->num_entities = i; /* Get interfaces and number of interfaces */ i = 0; + uintf = media_get_uptr(topo->ptr_interfaces); media_device_for_each_intf(intf, mdev) { i++; - - if (ret || !topo->interfaces) + if (ret || !uintf) continue; if (i > topo->num_interfaces) { @@ -287,33 +288,34 @@ static long __media_device_get_topology(struct media_device *mdev, continue; } - memset(&uintf, 0, sizeof(uintf)); + memset(&kintf, 0, sizeof(kintf)); /* Copy intf fields to userspace struct */ - uintf.id = intf->graph_obj.id; - uintf.intf_type = intf->type; - uintf.flags = intf->flags; + kintf.id = intf->graph_obj.id; + kintf.intf_type = intf->type; + kintf.flags = intf->flags; if (media_type(&intf->graph_obj) == MEDIA_GRAPH_INTF_DEVNODE) { struct media_intf_devnode *devnode; devnode = intf_to_devnode(intf); - uintf.devnode.major = devnode->major; - uintf.devnode.minor = devnode->minor; + kintf.devnode.major = devnode->major; + kintf.devnode.minor = devnode->minor; } - if (copy_to_user(&topo->interfaces[i - 1], &uintf, sizeof(uintf))) + if (copy_to_user(uintf, &kintf, sizeof(kintf))) ret = -EFAULT; + uintf++; } topo->num_interfaces = i; /* Get pads and number of pads */ i = 0; + upad = media_get_uptr(topo->ptr_pads); media_device_for_each_pad(pad, mdev) { i++; - - if (ret || !topo->pads) + if (ret || !upad) continue; if (i > topo->num_pads) { @@ -321,27 +323,29 @@ static long __media_device_get_topology(struct media_device *mdev, continue; } - memset(&upad, 0, sizeof(upad)); + memset(&kpad, 0, sizeof(kpad)); /* Copy pad fields to userspace struct */ - upad.id = pad->graph_obj.id; - upad.entity_id = pad->entity->graph_obj.id; - upad.flags = pad->flags; + kpad.id = pad->graph_obj.id; + kpad.entity_id = pad->entity->graph_obj.id; + kpad.flags = pad->flags; - if (copy_to_user(&topo->pads[i - 1], &upad, sizeof(upad))) + if (copy_to_user(upad, &kpad, sizeof(kpad))) ret = -EFAULT; + upad++; } topo->num_pads = i; /* Get links and number of links */ i = 0; + ulink = media_get_uptr(topo->ptr_links); media_device_for_each_link(link, mdev) { if (link->is_backlink) continue; i++; - if (ret || !topo->links) + if (ret || !ulink) continue; if (i > topo->num_links) { @@ -349,19 +353,20 @@ static long __media_device_get_topology(struct media_device *mdev, continue; } - memset(&ulink, 0, sizeof(ulink)); + memset(&klink, 0, sizeof(klink)); /* Copy link fields to userspace struct */ - ulink.id = link->graph_obj.id; - ulink.source_id = link->gobj0->id; - ulink.sink_id = link->gobj1->id; - ulink.flags = link->flags; + klink.id = link->graph_obj.id; + klink.source_id = link->gobj0->id; + klink.sink_id = link->gobj1->id; + klink.flags = link->flags; if (media_type(link->gobj0) != MEDIA_GRAPH_PAD) - ulink.flags |= MEDIA_LNK_FL_INTERFACE_LINK; + klink.flags |= MEDIA_LNK_FL_INTERFACE_LINK; - if (copy_to_user(&topo->links[i - 1], &ulink, sizeof(ulink))) + if (copy_to_user(ulink, &klink, sizeof(klink))) ret = -EFAULT; + ulink++; } topo->num_links = i; diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h index 8d8e1a3e6e1af7..86f9753e5c0374 100644 --- a/include/uapi/linux/media.h +++ b/include/uapi/linux/media.h @@ -23,6 +23,9 @@ #ifndef __LINUX_MEDIA_H #define __LINUX_MEDIA_H +#ifndef __KERNEL__ +#include +#endif #include #include #include @@ -320,27 +323,26 @@ struct media_v2_link { }; struct media_v2_topology { - __u32 topology_version; + __u64 topology_version; - __u32 num_entities; - struct media_v2_entity *entities; + __u64 num_entities; + __u64 ptr_entities; - __u32 num_interfaces; - struct media_v2_interface *interfaces; + __u64 num_interfaces; + __u64 ptr_interfaces; - __u32 num_pads; - struct media_v2_pad *pads; + __u64 num_pads; + __u64 ptr_pads; - __u32 num_links; - struct media_v2_link *links; - - struct { - __u32 reserved_num; - void *reserved_ptr; - } reserved_types[16]; - __u32 reserved[8]; + __u64 num_links; + __u64 ptr_links; }; +static inline void __user *media_get_uptr(__u64 arg) +{ + return (void __user *)(uintptr_t)arg; +} + /* ioctls */ #define MEDIA_IOC_DEVICE_INFO _IOWR('|', 0x00, struct media_device_info) -- cgit 1.2.3-korg From b5f6df0607b767fe48b179c6ccee204ee17c3373 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Fri, 11 Dec 2015 15:16:27 -0200 Subject: [media] omap3isp: remove per ISP module link creation functions The entities to video nodes links were created on separate functions for each ISP module but since the only thing that these functions do is to call media_create_pad_link(), there's no need for that indirection level and all link creation logic can be just inlined in the caller function. Also, since the only possible failure for the link creation is a memory allocation, there is no need for error messages since the core already reports a very verbose message in that case. Suggested-by: Laurent Pinchart Signed-off-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/omap3isp/isp.c | 56 +++++++++++++++++----------- drivers/media/platform/omap3isp/ispccdc.c | 14 ------- drivers/media/platform/omap3isp/ispccdc.h | 1 - drivers/media/platform/omap3isp/ispccp2.c | 14 ------- drivers/media/platform/omap3isp/ispccp2.h | 1 - drivers/media/platform/omap3isp/ispcsi2.c | 14 ------- drivers/media/platform/omap3isp/ispcsi2.h | 1 - drivers/media/platform/omap3isp/isppreview.c | 20 ---------- drivers/media/platform/omap3isp/isppreview.h | 1 - drivers/media/platform/omap3isp/ispresizer.c | 20 ---------- drivers/media/platform/omap3isp/ispresizer.h | 1 - 11 files changed, 35 insertions(+), 108 deletions(-) diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c index cb8ac90086c141..40aee11805c771 100644 --- a/drivers/media/platform/omap3isp/isp.c +++ b/drivers/media/platform/omap3isp/isp.c @@ -1940,37 +1940,51 @@ static int isp_create_pads_links(struct isp_device *isp) { int ret; - ret = omap3isp_csi2_create_pads_links(isp); - if (ret < 0) { - dev_err(isp->dev, "CSI2 pads links creation failed\n"); + /* Create links between entities and video nodes. */ + ret = media_create_pad_link( + &isp->isp_csi2a.subdev.entity, CSI2_PAD_SOURCE, + &isp->isp_csi2a.video_out.video.entity, 0, 0); + if (ret < 0) return ret; - } - ret = omap3isp_ccp2_create_pads_links(isp); - if (ret < 0) { - dev_err(isp->dev, "CCP2 pads links creation failed\n"); + ret = media_create_pad_link( + &isp->isp_ccp2.video_in.video.entity, 0, + &isp->isp_ccp2.subdev.entity, CCP2_PAD_SINK, 0); + if (ret < 0) return ret; - } - ret = omap3isp_ccdc_create_pads_links(isp); - if (ret < 0) { - dev_err(isp->dev, "CCDC pads links creation failed\n"); + ret = media_create_pad_link( + &isp->isp_ccdc.subdev.entity, CCDC_PAD_SOURCE_OF, + &isp->isp_ccdc.video_out.video.entity, 0, 0); + if (ret < 0) return ret; - } - ret = omap3isp_preview_create_pads_links(isp); - if (ret < 0) { - dev_err(isp->dev, "Preview pads links creation failed\n"); + ret = media_create_pad_link( + &isp->isp_prev.video_in.video.entity, 0, + &isp->isp_prev.subdev.entity, PREV_PAD_SINK, 0); + if (ret < 0) return ret; - } - ret = omap3isp_resizer_create_pads_links(isp); - if (ret < 0) { - dev_err(isp->dev, "Resizer pads links creation failed\n"); + ret = media_create_pad_link( + &isp->isp_prev.subdev.entity, PREV_PAD_SOURCE, + &isp->isp_prev.video_out.video.entity, 0, 0); + if (ret < 0) + return ret; + + ret = media_create_pad_link( + &isp->isp_res.video_in.video.entity, 0, + &isp->isp_res.subdev.entity, RESZ_PAD_SINK, 0); + if (ret < 0) + return ret; + + ret = media_create_pad_link( + &isp->isp_res.subdev.entity, RESZ_PAD_SOURCE, + &isp->isp_res.video_out.video.entity, 0, 0); + + if (ret < 0) return ret; - } - /* Connect the submodules. */ + /* Create links between entities. */ ret = media_create_pad_link( &isp->isp_csi2a.subdev.entity, CSI2_PAD_SOURCE, &isp->isp_ccdc.subdev.entity, CCDC_PAD_SINK, 0); diff --git a/drivers/media/platform/omap3isp/ispccdc.c b/drivers/media/platform/omap3isp/ispccdc.c index 749462c1af8e9d..5e16b5f594b78b 100644 --- a/drivers/media/platform/omap3isp/ispccdc.c +++ b/drivers/media/platform/omap3isp/ispccdc.c @@ -2717,20 +2717,6 @@ int omap3isp_ccdc_init(struct isp_device *isp) return 0; } -/* - * omap3isp_ccdc_create_pads_links - CCDC pads links creation - * @isp : Pointer to ISP device - * return negative error code or zero on success - */ -int omap3isp_ccdc_create_pads_links(struct isp_device *isp) -{ - struct isp_ccdc_device *ccdc = &isp->isp_ccdc; - - /* Connect the CCDC subdev to the video node. */ - return media_create_pad_link(&ccdc->subdev.entity, CCDC_PAD_SOURCE_OF, - &ccdc->video_out.video.entity, 0, 0); -} - /* * omap3isp_ccdc_cleanup - CCDC module cleanup. * @isp: Device pointer specific to the OMAP3 ISP. diff --git a/drivers/media/platform/omap3isp/ispccdc.h b/drivers/media/platform/omap3isp/ispccdc.h index 2128203ef6fb37..3440a709794001 100644 --- a/drivers/media/platform/omap3isp/ispccdc.h +++ b/drivers/media/platform/omap3isp/ispccdc.h @@ -163,7 +163,6 @@ struct isp_ccdc_device { struct isp_device; int omap3isp_ccdc_init(struct isp_device *isp); -int omap3isp_ccdc_create_pads_links(struct isp_device *isp); void omap3isp_ccdc_cleanup(struct isp_device *isp); int omap3isp_ccdc_register_entities(struct isp_ccdc_device *ccdc, struct v4l2_device *vdev); diff --git a/drivers/media/platform/omap3isp/ispccp2.c b/drivers/media/platform/omap3isp/ispccp2.c index 59686dd1bb0a2b..27f5fe4edefcc8 100644 --- a/drivers/media/platform/omap3isp/ispccp2.c +++ b/drivers/media/platform/omap3isp/ispccp2.c @@ -1153,20 +1153,6 @@ int omap3isp_ccp2_init(struct isp_device *isp) return 0; } -/* - * omap3isp_ccp2_create_pads_links - CCP2 pads links creation - * @isp : Pointer to ISP device - * return negative error code or zero on success - */ -int omap3isp_ccp2_create_pads_links(struct isp_device *isp) -{ - struct isp_ccp2_device *ccp2 = &isp->isp_ccp2; - - /* Connect the video node to the ccp2 subdev. */ - return media_create_pad_link(&ccp2->video_in.video.entity, 0, - &ccp2->subdev.entity, CCP2_PAD_SINK, 0); -} - /* * omap3isp_ccp2_cleanup - CCP2 un-initialization * @isp : Pointer to ISP device diff --git a/drivers/media/platform/omap3isp/ispccp2.h b/drivers/media/platform/omap3isp/ispccp2.h index fb74bc67878b1d..4662bffa79e31a 100644 --- a/drivers/media/platform/omap3isp/ispccp2.h +++ b/drivers/media/platform/omap3isp/ispccp2.h @@ -79,7 +79,6 @@ struct isp_ccp2_device { /* Function declarations */ int omap3isp_ccp2_init(struct isp_device *isp); -int omap3isp_ccp2_create_pads_links(struct isp_device *isp); void omap3isp_ccp2_cleanup(struct isp_device *isp); int omap3isp_ccp2_register_entities(struct isp_ccp2_device *ccp2, struct v4l2_device *vdev); diff --git a/drivers/media/platform/omap3isp/ispcsi2.c b/drivers/media/platform/omap3isp/ispcsi2.c index 886f148755b0c9..f75a1be29d84aa 100644 --- a/drivers/media/platform/omap3isp/ispcsi2.c +++ b/drivers/media/platform/omap3isp/ispcsi2.c @@ -1310,20 +1310,6 @@ int omap3isp_csi2_init(struct isp_device *isp) return 0; } -/* - * omap3isp_csi2_create_pads_links - CSI2 pads links creation - * @isp : Pointer to ISP device - * return negative error code or zero on success - */ -int omap3isp_csi2_create_pads_links(struct isp_device *isp) -{ - struct isp_csi2_device *csi2a = &isp->isp_csi2a; - - /* Connect the CSI2 subdev to the video node. */ - return media_create_pad_link(&csi2a->subdev.entity, CSI2_PAD_SOURCE, - &csi2a->video_out.video.entity, 0, 0); -} - /* * omap3isp_csi2_cleanup - Routine for module driver cleanup */ diff --git a/drivers/media/platform/omap3isp/ispcsi2.h b/drivers/media/platform/omap3isp/ispcsi2.h index 452ee239c7d77f..453ed62fe3946c 100644 --- a/drivers/media/platform/omap3isp/ispcsi2.h +++ b/drivers/media/platform/omap3isp/ispcsi2.h @@ -148,7 +148,6 @@ struct isp_csi2_device { void omap3isp_csi2_isr(struct isp_csi2_device *csi2); int omap3isp_csi2_reset(struct isp_csi2_device *csi2); int omap3isp_csi2_init(struct isp_device *isp); -int omap3isp_csi2_create_pads_links(struct isp_device *isp); void omap3isp_csi2_cleanup(struct isp_device *isp); void omap3isp_csi2_unregister_entities(struct isp_csi2_device *csi2); int omap3isp_csi2_register_entities(struct isp_csi2_device *csi2, diff --git a/drivers/media/platform/omap3isp/isppreview.c b/drivers/media/platform/omap3isp/isppreview.c index e15ad4133632b2..84a96670e2e714 100644 --- a/drivers/media/platform/omap3isp/isppreview.c +++ b/drivers/media/platform/omap3isp/isppreview.c @@ -2341,26 +2341,6 @@ int omap3isp_preview_init(struct isp_device *isp) return preview_init_entities(prev); } -/* - * omap3isp_preview_create_pads_links - Previewer pads links creation - * @isp : Pointer to ISP device - * return negative error code or zero on success - */ -int omap3isp_preview_create_pads_links(struct isp_device *isp) -{ - struct isp_prev_device *prev = &isp->isp_prev; - int ret; - - /* Connect the video nodes to the previewer subdev. */ - ret = media_create_pad_link(&prev->video_in.video.entity, 0, - &prev->subdev.entity, PREV_PAD_SINK, 0); - if (ret < 0) - return ret; - - return media_create_pad_link(&prev->subdev.entity, PREV_PAD_SOURCE, - &prev->video_out.video.entity, 0, 0); -} - void omap3isp_preview_cleanup(struct isp_device *isp) { struct isp_prev_device *prev = &isp->isp_prev; diff --git a/drivers/media/platform/omap3isp/isppreview.h b/drivers/media/platform/omap3isp/isppreview.h index f3593b7cecc712..16fdc03a3d43bf 100644 --- a/drivers/media/platform/omap3isp/isppreview.h +++ b/drivers/media/platform/omap3isp/isppreview.h @@ -148,7 +148,6 @@ struct isp_prev_device { struct isp_device; int omap3isp_preview_init(struct isp_device *isp); -int omap3isp_preview_create_pads_links(struct isp_device *isp); void omap3isp_preview_cleanup(struct isp_device *isp); int omap3isp_preview_register_entities(struct isp_prev_device *prv, diff --git a/drivers/media/platform/omap3isp/ispresizer.c b/drivers/media/platform/omap3isp/ispresizer.c index 20b98d876d7edd..0b6a87508584f4 100644 --- a/drivers/media/platform/omap3isp/ispresizer.c +++ b/drivers/media/platform/omap3isp/ispresizer.c @@ -1785,26 +1785,6 @@ int omap3isp_resizer_init(struct isp_device *isp) return resizer_init_entities(res); } -/* - * omap3isp_resizer_create_pads_links - Resizer pads links creation - * @isp : Pointer to ISP device - * return negative error code or zero on success - */ -int omap3isp_resizer_create_pads_links(struct isp_device *isp) -{ - struct isp_res_device *res = &isp->isp_res; - int ret; - - /* Connect the video nodes to the resizer subdev. */ - ret = media_create_pad_link(&res->video_in.video.entity, 0, - &res->subdev.entity, RESZ_PAD_SINK, 0); - if (ret < 0) - return ret; - - return media_create_pad_link(&res->subdev.entity, RESZ_PAD_SOURCE, - &res->video_out.video.entity, 0, 0); -} - void omap3isp_resizer_cleanup(struct isp_device *isp) { struct isp_res_device *res = &isp->isp_res; diff --git a/drivers/media/platform/omap3isp/ispresizer.h b/drivers/media/platform/omap3isp/ispresizer.h index 8b9fdcdab73d89..5414542912e272 100644 --- a/drivers/media/platform/omap3isp/ispresizer.h +++ b/drivers/media/platform/omap3isp/ispresizer.h @@ -119,7 +119,6 @@ struct isp_res_device { struct isp_device; int omap3isp_resizer_init(struct isp_device *isp); -int omap3isp_resizer_create_pads_links(struct isp_device *isp); void omap3isp_resizer_cleanup(struct isp_device *isp); int omap3isp_resizer_register_entities(struct isp_res_device *res, -- cgit 1.2.3-korg From b285d5afcf80270fafc57b1a7f1ffab9e77e4686 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Fri, 11 Dec 2015 15:16:28 -0200 Subject: [media] omap3isp: remove pads prefix from isp_create_pads_links() The function that creates the links between ISP internal and external entities is called isp_create_pads_links() but the "pads" prefix is redundant since the driver doesn't handle any other kind of link so it can just be removed. While being there, fix the function's kernel-doc since is not using a proper format. Suggested-by: Laurent Pinchart Signed-off-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/omap3isp/isp.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c index 40aee11805c771..fb17746e42091b 100644 --- a/drivers/media/platform/omap3isp/isp.c +++ b/drivers/media/platform/omap3isp/isp.c @@ -1932,11 +1932,15 @@ done: } /* - * isp_create_pads_links - Pads links creation for the subdevices + * isp_create_links() - Create links for internal and external ISP entities * @isp : Pointer to ISP device - * return negative error code or zero on success + * + * This function creates all links between ISP internal and external entities. + * + * Return: A negative error code on failure or zero on success. Possible error + * codes are those returned by media_create_pad_link(). */ -static int isp_create_pads_links(struct isp_device *isp) +static int isp_create_links(struct isp_device *isp) { int ret; @@ -2527,7 +2531,7 @@ static int isp_probe(struct platform_device *pdev) if (ret < 0) goto error_modules; - ret = isp_create_pads_links(isp); + ret = isp_create_links(isp); if (ret < 0) goto error_register_entities; -- cgit 1.2.3-korg From a64860e56b2f97bdcd367a6e10624cd0e51b5406 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Fri, 11 Dec 2015 15:16:29 -0200 Subject: [media] omap3isp: rename single labels to just error Commit bc36b30fe06b ("[media] omap3isp: separate links creation from entities init") moved the link creation logic from the entities init functions and so removed the error_link labels from the error paths. But after that, some functions have a single error label so it makes more sense to rename the label to just "error" in thi case. Suggested-by: Laurent Pinchart Signed-off-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/omap3isp/ispccdc.c | 4 ++-- drivers/media/platform/omap3isp/ispccp2.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/media/platform/omap3isp/ispccdc.c b/drivers/media/platform/omap3isp/ispccdc.c index 5e16b5f594b78b..4eaf926d607341 100644 --- a/drivers/media/platform/omap3isp/ispccdc.c +++ b/drivers/media/platform/omap3isp/ispccdc.c @@ -2669,11 +2669,11 @@ static int ccdc_init_entities(struct isp_ccdc_device *ccdc) ret = omap3isp_video_init(&ccdc->video_out, "CCDC"); if (ret < 0) - goto error_video; + goto error; return 0; -error_video: +error: media_entity_cleanup(me); return ret; } diff --git a/drivers/media/platform/omap3isp/ispccp2.c b/drivers/media/platform/omap3isp/ispccp2.c index 27f5fe4edefcc8..ca095238510d57 100644 --- a/drivers/media/platform/omap3isp/ispccp2.c +++ b/drivers/media/platform/omap3isp/ispccp2.c @@ -1102,11 +1102,11 @@ static int ccp2_init_entities(struct isp_ccp2_device *ccp2) ret = omap3isp_video_init(&ccp2->video_in, "CCP2"); if (ret < 0) - goto error_video; + goto error; return 0; -error_video: +error: media_entity_cleanup(&ccp2->subdev.entity); return ret; } -- cgit 1.2.3-korg From 06a1368faf2184c71f086bfc13e81ea153d98798 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Fri, 11 Dec 2015 15:16:30 -0200 Subject: [media] omap3isp: consistently use v4l2_dev var in complete notifier The isp_subdev_notifier_complete() complete callback defines a struct v4l2_device *v4l2_dev to avoid needing two level of indirections to access the V4L2 subdevs but the var is not always used when possible as when calling v4l2_device_register_subdev_nodes(). So change that to consistently use the defined v4l2_dev pointer var. Suggested-by: Sakari Ailus Signed-off-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/omap3isp/isp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c index fb17746e42091b..8226eca833279f 100644 --- a/drivers/media/platform/omap3isp/isp.c +++ b/drivers/media/platform/omap3isp/isp.c @@ -2365,7 +2365,7 @@ static int isp_subdev_notifier_complete(struct v4l2_async_notifier *async) } } - return v4l2_device_register_subdev_nodes(&isp->v4l2_dev); + return v4l2_device_register_subdev_nodes(v4l2_dev); } /* -- cgit 1.2.3-korg From 04e021511abc189ca43f1f11ec53121b9345c9fa Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Fri, 11 Dec 2015 15:16:31 -0200 Subject: [media] staging: omap4iss: remove pads prefix from *_create_pads_links() The functions that create ISS internal and external entities links are called *_create_pads_links() but the "pads" prefix is redundant since the driver doesn't handle any other kind of link so it can be removed. Suggested-by: Laurent Pinchart Signed-off-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/media/omap4iss/iss.c | 12 ++++++------ drivers/staging/media/omap4iss/iss_csi2.c | 4 ++-- drivers/staging/media/omap4iss/iss_csi2.h | 2 +- drivers/staging/media/omap4iss/iss_ipipeif.c | 4 ++-- drivers/staging/media/omap4iss/iss_ipipeif.h | 2 +- drivers/staging/media/omap4iss/iss_resizer.c | 4 ++-- drivers/staging/media/omap4iss/iss_resizer.h | 2 +- 7 files changed, 15 insertions(+), 15 deletions(-) diff --git a/drivers/staging/media/omap4iss/iss.c b/drivers/staging/media/omap4iss/iss.c index 28e4d16544eb67..7209b92b1f8657 100644 --- a/drivers/staging/media/omap4iss/iss.c +++ b/drivers/staging/media/omap4iss/iss.c @@ -1273,28 +1273,28 @@ done: } /* - * iss_create_pads_links() - Pads links creation for the subdevices + * iss_create_links() - Pads links creation for the subdevices * @iss : Pointer to ISS device * * return negative error code or zero on success */ -static int iss_create_pads_links(struct iss_device *iss) +static int iss_create_links(struct iss_device *iss) { int ret; - ret = omap4iss_csi2_create_pads_links(iss); + ret = omap4iss_csi2_create_links(iss); if (ret < 0) { dev_err(iss->dev, "CSI2 pads links creation failed\n"); return ret; } - ret = omap4iss_ipipeif_create_pads_links(iss); + ret = omap4iss_ipipeif_create_links(iss); if (ret < 0) { dev_err(iss->dev, "ISP IPIPEIF pads links creation failed\n"); return ret; } - ret = omap4iss_resizer_create_pads_links(iss); + ret = omap4iss_resizer_create_links(iss); if (ret < 0) { dev_err(iss->dev, "ISP RESIZER pads links creation failed\n"); return ret; @@ -1491,7 +1491,7 @@ static int iss_probe(struct platform_device *pdev) if (ret < 0) goto error_modules; - ret = iss_create_pads_links(iss); + ret = iss_create_links(iss); if (ret < 0) goto error_entities; diff --git a/drivers/staging/media/omap4iss/iss_csi2.c b/drivers/staging/media/omap4iss/iss_csi2.c index f0fa037ce173f3..aaca39d751a5d5 100644 --- a/drivers/staging/media/omap4iss/iss_csi2.c +++ b/drivers/staging/media/omap4iss/iss_csi2.c @@ -1339,12 +1339,12 @@ int omap4iss_csi2_init(struct iss_device *iss) } /* - * omap4iss_csi2_create_pads_links() - CSI2 pads links creation + * omap4iss_csi2_create_links() - CSI2 pads links creation * @iss: Pointer to ISS device * * return negative error code or zero on success */ -int omap4iss_csi2_create_pads_links(struct iss_device *iss) +int omap4iss_csi2_create_links(struct iss_device *iss) { struct iss_csi2_device *csi2a = &iss->csi2a; struct iss_csi2_device *csi2b = &iss->csi2b; diff --git a/drivers/staging/media/omap4iss/iss_csi2.h b/drivers/staging/media/omap4iss/iss_csi2.h index 1d5a0d8222a95f..24ab378d469ff4 100644 --- a/drivers/staging/media/omap4iss/iss_csi2.h +++ b/drivers/staging/media/omap4iss/iss_csi2.h @@ -151,7 +151,7 @@ struct iss_csi2_device { void omap4iss_csi2_isr(struct iss_csi2_device *csi2); int omap4iss_csi2_reset(struct iss_csi2_device *csi2); int omap4iss_csi2_init(struct iss_device *iss); -int omap4iss_csi2_create_pads_links(struct iss_device *iss); +int omap4iss_csi2_create_links(struct iss_device *iss); void omap4iss_csi2_cleanup(struct iss_device *iss); void omap4iss_csi2_unregister_entities(struct iss_csi2_device *csi2); int omap4iss_csi2_register_entities(struct iss_csi2_device *csi2, diff --git a/drivers/staging/media/omap4iss/iss_ipipeif.c b/drivers/staging/media/omap4iss/iss_ipipeif.c index 88b22f7f8b133f..23de8330731d02 100644 --- a/drivers/staging/media/omap4iss/iss_ipipeif.c +++ b/drivers/staging/media/omap4iss/iss_ipipeif.c @@ -815,12 +815,12 @@ int omap4iss_ipipeif_init(struct iss_device *iss) } /* - * omap4iss_ipipeif_create_pads_links() - IPIPEIF pads links creation + * omap4iss_ipipeif_create_links() - IPIPEIF pads links creation * @iss: Pointer to ISS device * * return negative error code or zero on success */ -int omap4iss_ipipeif_create_pads_links(struct iss_device *iss) +int omap4iss_ipipeif_create_links(struct iss_device *iss) { struct iss_ipipeif_device *ipipeif = &iss->ipipeif; diff --git a/drivers/staging/media/omap4iss/iss_ipipeif.h b/drivers/staging/media/omap4iss/iss_ipipeif.h index dd906b41cf9be1..bad32b1d6ad893 100644 --- a/drivers/staging/media/omap4iss/iss_ipipeif.h +++ b/drivers/staging/media/omap4iss/iss_ipipeif.h @@ -78,7 +78,7 @@ struct iss_ipipeif_device { struct iss_device; int omap4iss_ipipeif_init(struct iss_device *iss); -int omap4iss_ipipeif_create_pads_links(struct iss_device *iss); +int omap4iss_ipipeif_create_links(struct iss_device *iss); void omap4iss_ipipeif_cleanup(struct iss_device *iss); int omap4iss_ipipeif_register_entities(struct iss_ipipeif_device *ipipeif, struct v4l2_device *vdev); diff --git a/drivers/staging/media/omap4iss/iss_resizer.c b/drivers/staging/media/omap4iss/iss_resizer.c index fe7b253bb0d320..f1d352c711d573 100644 --- a/drivers/staging/media/omap4iss/iss_resizer.c +++ b/drivers/staging/media/omap4iss/iss_resizer.c @@ -857,12 +857,12 @@ int omap4iss_resizer_init(struct iss_device *iss) } /* - * omap4iss_resizer_create_pads_links() - RESIZER pads links creation + * omap4iss_resizer_create_links() - RESIZER pads links creation * @iss: Pointer to ISS device * * return negative error code or zero on success */ -int omap4iss_resizer_create_pads_links(struct iss_device *iss) +int omap4iss_resizer_create_links(struct iss_device *iss) { struct iss_resizer_device *resizer = &iss->resizer; diff --git a/drivers/staging/media/omap4iss/iss_resizer.h b/drivers/staging/media/omap4iss/iss_resizer.h index 98ab950253d0f9..8b7c5fe9ffeddb 100644 --- a/drivers/staging/media/omap4iss/iss_resizer.h +++ b/drivers/staging/media/omap4iss/iss_resizer.h @@ -61,7 +61,7 @@ struct iss_resizer_device { struct iss_device; int omap4iss_resizer_init(struct iss_device *iss); -int omap4iss_resizer_create_pads_links(struct iss_device *iss); +int omap4iss_resizer_create_links(struct iss_device *iss); void omap4iss_resizer_cleanup(struct iss_device *iss); int omap4iss_resizer_register_entities(struct iss_resizer_device *resizer, struct v4l2_device *vdev); -- cgit 1.2.3-korg From d8a2cf41cc1c1b4af35eaf0414f83653b7b17c8b Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Fri, 11 Dec 2015 15:16:32 -0200 Subject: [media] v4l: vsp1: remove pads prefix from *_create_pads_links() The functions that create entities links are called *_create_pads_links() but the "pads" prefix is redundant since the driver doesn't handle any other kind of link so it can be removed. Suggested-by: Laurent Pinchart Signed-off-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/vsp1/vsp1_drv.c | 4 ++-- drivers/media/platform/vsp1/vsp1_rpf.c | 4 ++-- drivers/media/platform/vsp1/vsp1_rwpf.h | 4 ++-- drivers/media/platform/vsp1/vsp1_wpf.c | 4 ++-- 4 files changed, 8 insertions(+), 8 deletions(-) diff --git a/drivers/media/platform/vsp1/vsp1_drv.c b/drivers/media/platform/vsp1/vsp1_drv.c index 8f995d26764672..4209d8615f722e 100644 --- a/drivers/media/platform/vsp1/vsp1_drv.c +++ b/drivers/media/platform/vsp1/vsp1_drv.c @@ -261,14 +261,14 @@ static int vsp1_create_entities(struct vsp1_device *vsp1) /* Create links. */ list_for_each_entry(entity, &vsp1->entities, list_dev) { if (entity->type == VSP1_ENTITY_LIF) { - ret = vsp1_wpf_create_pads_links(vsp1, entity); + ret = vsp1_wpf_create_links(vsp1, entity); if (ret < 0) goto done; continue; } if (entity->type == VSP1_ENTITY_RPF) { - ret = vsp1_rpf_create_pads_links(vsp1, entity); + ret = vsp1_rpf_create_links(vsp1, entity); if (ret < 0) goto done; continue; diff --git a/drivers/media/platform/vsp1/vsp1_rpf.c b/drivers/media/platform/vsp1/vsp1_rpf.c index 847fb6d01a5ad8..924538223d3ea3 100644 --- a/drivers/media/platform/vsp1/vsp1_rpf.c +++ b/drivers/media/platform/vsp1/vsp1_rpf.c @@ -285,13 +285,13 @@ error: } /* - * vsp1_rpf_create_pads_links_create_pads_links() - RPF pads links creation + * vsp1_rpf_create_links() - RPF pads links creation * @vsp1: Pointer to VSP1 device * @entity: Pointer to VSP1 entity * * return negative error code or zero on success */ -int vsp1_rpf_create_pads_links(struct vsp1_device *vsp1, +int vsp1_rpf_create_links(struct vsp1_device *vsp1, struct vsp1_entity *entity) { struct vsp1_rwpf *rpf = to_rwpf(&entity->subdev); diff --git a/drivers/media/platform/vsp1/vsp1_rwpf.h b/drivers/media/platform/vsp1/vsp1_rwpf.h index 6638b358736934..731d36e5258d25 100644 --- a/drivers/media/platform/vsp1/vsp1_rwpf.h +++ b/drivers/media/platform/vsp1/vsp1_rwpf.h @@ -50,9 +50,9 @@ static inline struct vsp1_rwpf *to_rwpf(struct v4l2_subdev *subdev) struct vsp1_rwpf *vsp1_rpf_create(struct vsp1_device *vsp1, unsigned int index); struct vsp1_rwpf *vsp1_wpf_create(struct vsp1_device *vsp1, unsigned int index); -int vsp1_rpf_create_pads_links(struct vsp1_device *vsp1, +int vsp1_rpf_create_links(struct vsp1_device *vsp1, struct vsp1_entity *entity); -int vsp1_wpf_create_pads_links(struct vsp1_device *vsp1, +int vsp1_wpf_create_links(struct vsp1_device *vsp1, struct vsp1_entity *entity); int vsp1_rwpf_enum_mbus_code(struct v4l2_subdev *subdev, diff --git a/drivers/media/platform/vsp1/vsp1_wpf.c b/drivers/media/platform/vsp1/vsp1_wpf.c index 969278bc1d412d..cbf514a6582dc7 100644 --- a/drivers/media/platform/vsp1/vsp1_wpf.c +++ b/drivers/media/platform/vsp1/vsp1_wpf.c @@ -285,13 +285,13 @@ error: } /* - * vsp1_wpf_create_pads_links_create_pads_links() - RPF pads links creation + * vsp1_wpf_create_links() - RPF pads links creation * @vsp1: Pointer to VSP1 device * @entity: Pointer to VSP1 entity * * return negative error code or zero on success */ -int vsp1_wpf_create_pads_links(struct vsp1_device *vsp1, +int vsp1_wpf_create_links(struct vsp1_device *vsp1, struct vsp1_entity *entity) { struct vsp1_rwpf *wpf = to_rwpf(&entity->subdev); -- cgit 1.2.3-korg From 1488eee3b46736eefd9aec1e9d944f7a828773b9 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Fri, 11 Dec 2015 15:16:33 -0200 Subject: [media] v4l: vsp1: use else if instead of continue when creating links The for loop in the vsp1_create_entities() function that create the links, checks the entity type and call the proper link creation function but then it uses continue to force the next iteration of the loop to take place and skipping code in between that creates links for different entities types. It is more readable and easier to understand if the if else constructs is used instead of the continue statement. Suggested-by: Laurent Pinchart Signed-off-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/vsp1/vsp1_drv.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/drivers/media/platform/vsp1/vsp1_drv.c b/drivers/media/platform/vsp1/vsp1_drv.c index 4209d8615f722e..0b251147bfff4a 100644 --- a/drivers/media/platform/vsp1/vsp1_drv.c +++ b/drivers/media/platform/vsp1/vsp1_drv.c @@ -264,19 +264,15 @@ static int vsp1_create_entities(struct vsp1_device *vsp1) ret = vsp1_wpf_create_links(vsp1, entity); if (ret < 0) goto done; - continue; - } - - if (entity->type == VSP1_ENTITY_RPF) { + } else if (entity->type == VSP1_ENTITY_RPF) { ret = vsp1_rpf_create_links(vsp1, entity); if (ret < 0) goto done; - continue; + } else { + ret = vsp1_create_links(vsp1, entity); + if (ret < 0) + goto done; } - - ret = vsp1_create_links(vsp1, entity); - if (ret < 0) - goto done; } if (vsp1->pdata.features & VSP1_HAS_LIF) { -- cgit 1.2.3-korg From 552faf4c083d8e86c6d86160ae3da0412280f690 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Fri, 11 Dec 2015 15:16:34 -0200 Subject: [media] uvcvideo: remove pads prefix from uvc_mc_create_pads_links() The function uvc_mc_create_pads_links() creates entities links but the "pads" prefix is redundant since the driver doesn't handle any other kind of link, so it can be removed. Suggested-by: Laurent Pinchart Signed-off-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/uvc/uvc_entity.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/media/usb/uvc/uvc_entity.c b/drivers/media/usb/uvc/uvc_entity.c index 38e893a1408bc8..33119dcb7ceccf 100644 --- a/drivers/media/usb/uvc/uvc_entity.c +++ b/drivers/media/usb/uvc/uvc_entity.c @@ -32,7 +32,7 @@ static int uvc_mc_register_entity(struct uvc_video_chain *chain, return v4l2_device_register_subdev(&chain->dev->vdev, &entity->subdev); } -static int uvc_mc_create_pads_links(struct uvc_video_chain *chain, +static int uvc_mc_create_links(struct uvc_video_chain *chain, struct uvc_entity *entity) { const u32 flags = MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE; @@ -131,9 +131,9 @@ int uvc_mc_register_entities(struct uvc_video_chain *chain) } list_for_each_entry(entity, &chain->entities, chain) { - ret = uvc_mc_create_pads_links(chain, entity); + ret = uvc_mc_create_links(chain, entity); if (ret < 0) { - uvc_printk(KERN_INFO, "Failed to create pads links for " + uvc_printk(KERN_INFO, "Failed to create links for " "entity %u\n", entity->id); return ret; } -- cgit 1.2.3-korg From 1cb2f6f4b1652ad4e19894a4b4b82b0c2ea8a4b6 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Fri, 11 Dec 2015 15:16:35 -0200 Subject: [media] uvcvideo: register entity subdev on init The uvc_mc_register_entities() function iterated over the entities three times to initialize the entities, register the subdev for the ones whose type was UVC_TT_STREAMING and to create the entities links. But this can be simplied by merging the init and registration logic in a single loop. Suggested-by: Laurent Pinchart Signed-off-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/uvc/uvc_entity.c | 33 +++++++++------------------------ 1 file changed, 9 insertions(+), 24 deletions(-) diff --git a/drivers/media/usb/uvc/uvc_entity.c b/drivers/media/usb/uvc/uvc_entity.c index 33119dcb7ceccf..ac386bb547e6e3 100644 --- a/drivers/media/usb/uvc/uvc_entity.c +++ b/drivers/media/usb/uvc/uvc_entity.c @@ -19,19 +19,6 @@ #include "uvcvideo.h" -/* ------------------------------------------------------------------------ - * Video subdevices registration and unregistration - */ - -static int uvc_mc_register_entity(struct uvc_video_chain *chain, - struct uvc_entity *entity) -{ - if (UVC_ENTITY_TYPE(entity) == UVC_TT_STREAMING) - return 0; - - return v4l2_device_register_subdev(&chain->dev->vdev, &entity->subdev); -} - static int uvc_mc_create_links(struct uvc_video_chain *chain, struct uvc_entity *entity) { @@ -85,7 +72,8 @@ void uvc_mc_cleanup_entity(struct uvc_entity *entity) media_entity_cleanup(&entity->vdev->entity); } -static int uvc_mc_init_entity(struct uvc_entity *entity) +static int uvc_mc_init_entity(struct uvc_video_chain *chain, + struct uvc_entity *entity) { int ret; @@ -96,6 +84,12 @@ static int uvc_mc_init_entity(struct uvc_entity *entity) ret = media_entity_pads_init(&entity->subdev.entity, entity->num_pads, entity->pads); + + if (ret < 0) + return ret; + + ret = v4l2_device_register_subdev(&chain->dev->vdev, + &entity->subdev); } else if (entity->vdev != NULL) { ret = media_entity_pads_init(&entity->vdev->entity, entity->num_pads, entity->pads); @@ -113,7 +107,7 @@ int uvc_mc_register_entities(struct uvc_video_chain *chain) int ret; list_for_each_entry(entity, &chain->entities, chain) { - ret = uvc_mc_init_entity(entity); + ret = uvc_mc_init_entity(chain, entity); if (ret < 0) { uvc_printk(KERN_INFO, "Failed to initialize entity for " "entity %u\n", entity->id); @@ -121,15 +115,6 @@ int uvc_mc_register_entities(struct uvc_video_chain *chain) } } - list_for_each_entry(entity, &chain->entities, chain) { - ret = uvc_mc_register_entity(chain, entity); - if (ret < 0) { - uvc_printk(KERN_INFO, "Failed to register entity for " - "entity %u\n", entity->id); - return ret; - } - } - list_for_each_entry(entity, &chain->entities, chain) { ret = uvc_mc_create_links(chain, entity); if (ret < 0) { -- cgit 1.2.3-korg From 313895fba2040c7f223db3d6aa6cb3b5c5022042 Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Fri, 11 Dec 2015 15:16:36 -0200 Subject: [media] media-entity: remove unneded enclosing parenthesis Commit 86ee417578a2 ("[media] media: convert links from array to list") had many changes that were automated using coccinelle but the semantic patch was not smart enough to rely on operators precedence and avoid using unnecessary enclosing parenthesis. This patch removes them since are not needed. Suggested-by: Laurent Pinchart Signed-off-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index ada2b44ea4e15d..181ca0de6e523a 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -225,7 +225,7 @@ static void stack_push(struct media_entity_graph *graph, return; } graph->top++; - graph->stack[graph->top].link = (&entity->links)->next; + graph->stack[graph->top].link = entity->links.next; graph->stack[graph->top].entity = entity; } @@ -268,7 +268,7 @@ media_entity_graph_walk_next(struct media_entity_graph *graph) * top of the stack until no more entities on the level can be * found. */ - while (link_top(graph) != &(stack_top(graph)->links)) { + while (link_top(graph) != &stack_top(graph)->links) { struct media_entity *entity = stack_top(graph); struct media_link *link; struct media_entity *next; -- cgit 1.2.3-korg From 82ae2a50597565cbb2c758b44a3f39adb158ef0a Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 11 Dec 2015 18:09:13 -0200 Subject: [media] media: move MEDIA_LNK_FL_INTERFACE_LINK logic to link creation Instead of flagging an interface link as MEDIA_LNK_FL_INTERFACE_LINK only when returning to userspace, do it at link creation time. That would allow using such flag internally, and cleans up a little bit the code for G_TOPOLOGY ioctl. [mchehab@osg.samsung.com: folded with a fixup from Dan Carpenter, replacing & by &&] Suggested-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 3 --- drivers/media/media-entity.c | 4 ++-- 2 files changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 6406914a9bf59c..c12481c753a011 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -361,9 +361,6 @@ static long __media_device_get_topology(struct media_device *mdev, klink.sink_id = link->gobj1->id; klink.flags = link->flags; - if (media_type(link->gobj0) != MEDIA_GRAPH_PAD) - klink.flags |= MEDIA_LNK_FL_INTERFACE_LINK; - if (copy_to_user(ulink, &klink, sizeof(klink))) ret = -EFAULT; ulink++; diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 181ca0de6e523a..6926e0685d0aa2 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -526,7 +526,7 @@ media_create_pad_link(struct media_entity *source, u16 source_pad, link->source = &source->pads[source_pad]; link->sink = &sink->pads[sink_pad]; - link->flags = flags; + link->flags = flags & ~MEDIA_LNK_FL_INTERFACE_LINK; /* Initialize graph object embedded at the new link */ media_gobj_create(source->graph_obj.mdev, MEDIA_GRAPH_LINK, @@ -756,7 +756,7 @@ struct media_link *media_create_intf_link(struct media_entity *entity, link->intf = intf; link->entity = entity; - link->flags = flags; + link->flags = flags | MEDIA_LNK_FL_INTERFACE_LINK; /* Initialize graph object embedded at the new link */ media_gobj_create(intf->graph_obj.mdev, MEDIA_GRAPH_LINK, -- cgit 1.2.3-korg From b3109d662d744c065f2a1da5e9b8d08f2189c2ac Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Fri, 11 Dec 2015 18:26:53 -0200 Subject: [media] media.h: let be clear that tuners need to use connectors The V4L2 core won't be adding connectors to the tuners and other entities that need them. Let it be clear. Suggested-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab --- include/uapi/linux/media.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h index 86f9753e5c0374..cacfceb0d81d86 100644 --- a/include/uapi/linux/media.h +++ b/include/uapi/linux/media.h @@ -74,10 +74,11 @@ struct media_device_info { /* * Connectors */ +/* It is a responsibility of the entity drivers to add connectors and links */ #define MEDIA_ENT_F_CONN_RF (MEDIA_ENT_F_BASE + 21) #define MEDIA_ENT_F_CONN_SVIDEO (MEDIA_ENT_F_BASE + 22) #define MEDIA_ENT_F_CONN_COMPOSITE (MEDIA_ENT_F_BASE + 23) - /* For internal test signal generators and other debug connectors */ +/* For internal test signal generators and other debug connectors */ #define MEDIA_ENT_F_CONN_TEST (MEDIA_ENT_F_BASE + 24) /* @@ -105,6 +106,10 @@ struct media_device_info { #define MEDIA_ENT_F_FLASH (MEDIA_ENT_F_OLD_SUBDEV_BASE + 2) #define MEDIA_ENT_F_LENS (MEDIA_ENT_F_OLD_SUBDEV_BASE + 3) #define MEDIA_ENT_F_ATV_DECODER (MEDIA_ENT_F_OLD_SUBDEV_BASE + 4) +/* + * It is a responsibility of the entity drivers to add connectors and links + * for the tuner entities. + */ #define MEDIA_ENT_F_TUNER (MEDIA_ENT_F_OLD_SUBDEV_BASE + 5) #define MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN MEDIA_ENT_F_OLD_SUBDEV_BASE -- cgit 1.2.3-korg From fdc40b5e95ac6480f6160081774aa2ec24784ccb Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sat, 12 Dec 2015 08:25:44 -0200 Subject: [media] dvbdev: Document the new MC-related fields The Media Controller next gen patchset added several new fields to be used with it. Document them. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-core/dvbdev.h | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/media/dvb-core/dvbdev.h b/drivers/media/dvb-core/dvbdev.h index de85ba0f570a81..abee18a402e1e4 100644 --- a/drivers/media/dvb-core/dvbdev.h +++ b/drivers/media/dvb-core/dvbdev.h @@ -120,6 +120,11 @@ struct dvb_adapter { * @entity: pointer to struct media_entity associated with the device node * @pads: pointer to struct media_pad associated with @entity; * @priv: private data + * @intf_devnode: Pointer to media_intf_devnode. Used by the dvbdev core to + * store the MC device node interface + * @tsout_num_entities: Number of Transport Stream output entities + * @tsout_entity: array with MC entities associated to each TS output node + * @tsout_pads: array with the source pads for each @tsout_entity * * This structure is used by the DVB core (frontend, CA, net, demux) in * order to create the device nodes. Usually, driver should not initialize @@ -188,8 +193,11 @@ int dvb_unregister_adapter(struct dvb_adapter *adap); * stored * @template: Template used to create &pdvbdev; * @priv: private data - * @type: type of the device: DVB_DEVICE_SEC, DVB_DEVICE_FRONTEND, - * DVB_DEVICE_DEMUX, DVB_DEVICE_DVR, DVB_DEVICE_CA, DVB_DEVICE_NET + * @type: type of the device: %DVB_DEVICE_SEC, %DVB_DEVICE_FRONTEND, + * %DVB_DEVICE_DEMUX, %DVB_DEVICE_DVR, %DVB_DEVICE_CA, + * %DVB_DEVICE_NET + * @demux_sink_pads: Number of demux outputs, to be used to create the TS + * outputs via the Media Controller. */ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev, -- cgit 1.2.3-korg From b7870d692d7b0718f7153aed9e7a32f0119b525d Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sat, 12 Dec 2015 08:59:14 -0200 Subject: [media] DocBook: MC: add the concept of interfaces The Media Controller next generation patches added a new graph element type: interfaces. It also allows links between interfaces and entities. Update the docbook to reflect that. Signed-off-by: Mauro Carvalho Chehab --- .../DocBook/media/v4l/media-controller.xml | 40 ++++++++++++++-------- 1 file changed, 26 insertions(+), 14 deletions(-) diff --git a/Documentation/DocBook/media/v4l/media-controller.xml b/Documentation/DocBook/media/v4l/media-controller.xml index 873ac3a621f013..def4a27aadef44 100644 --- a/Documentation/DocBook/media/v4l/media-controller.xml +++ b/Documentation/DocBook/media/v4l/media-controller.xml @@ -58,20 +58,32 @@ Media device model Discovering a device internal topology, and configuring it at runtime, is one of the goals of the media controller API. To achieve this, hardware - devices are modelled as an oriented graph of building blocks called entities - connected through pads. - An entity is a basic media hardware or software building block. It can - correspond to a large variety of logical blocks such as physical hardware - devices (CMOS sensor for instance), logical hardware devices (a building - block in a System-on-Chip image processing pipeline), DMA channels or - physical connectors. - A pad is a connection endpoint through which an entity can interact - with other entities. Data (not restricted to video) produced by an entity - flows from the entity's output to one or more entity inputs. Pads should not - be confused with physical pins at chip boundaries. - A link is a point-to-point oriented connection between two pads, - either on the same entity or on different entities. Data flows from a source - pad to a sink pad. + devices and Linux Kernel interfaces are modelled as graph objects on + an oriented graph. The object types that constitute the graph are: + + An entity + is a basic media hardware or software building block. It can correspond to + a large variety of logical blocks such as physical hardware devices + (CMOS sensor for instance), logical hardware devices (a building block in + a System-on-Chip image processing pipeline), DMA channels or physical + connectors. + An interface + is a graph representation of a Linux Kernel userspace API interface, + like a device node or a sysfs file that controls one or more entities + in the graph. + A pad + is a data connection endpoint through which an entity can interact with + other entities. Data (not restricted to video) produced by an entity + flows from the entity's output to one or more entity inputs. Pads should + not be confused with physical pins at chip boundaries. + A data link + is a point-to-point oriented connection between two pads, either on the + same entity or on different entities. Data flows from a source pad to a + sink pad. + An interface link + is a point-to-point bidirectional control connection between a Linux + Kernel interface and an entity.m + -- cgit 1.2.3-korg From 5fec921f49891e1343d60df3f6f40ceb52acdd42 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sat, 12 Dec 2015 09:56:07 -0200 Subject: [media] DocBook: move data types to a separate section As MEDIA_IOC_G_TOPOLOGY shares the data types already declared for entities, pads and links, we should move those to a separate part of the document, and use cross-references where needed. So, move the following tables to a separate section at the DocBook: media-entity-type media-entity-flag media-pad-flag media-link-flag Signed-off-by: Mauro Carvalho Chehab --- .../DocBook/media/v4l/media-controller.xml | 3 + .../DocBook/media/v4l/media-ioc-enum-entities.xml | 104 ------------- .../DocBook/media/v4l/media-ioc-enum-links.xml | 56 ------- Documentation/DocBook/media/v4l/media-types.xml | 166 +++++++++++++++++++++ 4 files changed, 169 insertions(+), 160 deletions(-) create mode 100644 Documentation/DocBook/media/v4l/media-types.xml diff --git a/Documentation/DocBook/media/v4l/media-controller.xml b/Documentation/DocBook/media/v4l/media-controller.xml index def4a27aadef44..63d48decaa6f1d 100644 --- a/Documentation/DocBook/media/v4l/media-controller.xml +++ b/Documentation/DocBook/media/v4l/media-controller.xml @@ -85,6 +85,9 @@ Kernel interface and an entity.m + + + &sub-media-types; diff --git a/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml b/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml index 9f7614a012342f..0c4f96bfc2defe 100644 --- a/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml +++ b/Documentation/DocBook/media/v4l/media-ioc-enum-entities.xml @@ -162,110 +162,6 @@
- - - Media entity types - - - - - - MEDIA_ENT_F_UNKNOWN and MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN - Unknown entity. That generally indicates that - a driver didn't initialize properly the entity, with is a Kernel bug - - - MEDIA_ENT_F_IO_V4L - Data streaming input and/or output entity. - - - MEDIA_ENT_F_IO_VBI - V4L VBI streaming input or output entity - - - MEDIA_ENT_F_IO_SWRADIO - V4L Software Digital Radio (SDR) streaming input or output entity - - - MEDIA_ENT_F_IO_DTV - DVB Digital TV streaming input or output entity - - - MEDIA_ENT_F_DTV_DEMOD - Digital TV demodulator entity. - - - MEDIA_ENT_F_MPEG_TS_DEMUX - MPEG Transport stream demux entity. Could be implemented on hardware or in Kernelspace by the Linux DVB subsystem. - - - MEDIA_ENT_F_DTV_CA - Digital TV Conditional Access module (CAM) entity - - - MEDIA_ENT_F_DTV_NET_DECAP - Digital TV network ULE/MLE desencapsulation entity. Could be implemented on hardware or in Kernelspace - - - MEDIA_ENT_F_CONN_RF - Connector for a Radio Frequency (RF) signal. - - - MEDIA_ENT_F_CONN_SVIDEO - Connector for a S-Video signal. - - - MEDIA_ENT_F_CONN_COMPOSITE - Connector for a RGB composite signal. - - - MEDIA_ENT_F_CONN_TEST - Connector for a test generator. - - - MEDIA_ENT_F_CAM_SENSOR - Camera video sensor entity. - - - MEDIA_ENT_F_FLASH - Flash controller entity. - - - MEDIA_ENT_F_LENS - Lens controller entity. - - - MEDIA_ENT_F_ATV_DECODER - Analog video decoder, the basic function of the video decoder - is to accept analogue video from a wide variety of sources such as - broadcast, DVD players, cameras and video cassette recorders, in - either NTSC, PAL, SECAM or HD format, separating the stream - into its component parts, luminance and chrominance, and output - it in some digital video standard, with appropriate timing - signals. - - - MEDIA_ENT_F_TUNER - Digital TV, analog TV, radio and/or software radio tuner. - - - -
- - - Media entity flags - - - - - - MEDIA_ENT_FL_DEFAULT - Default entity for its type. Used to discover the default - audio, VBI and video devices, the default camera sensor, ... - - - -
diff --git a/Documentation/DocBook/media/v4l/media-ioc-enum-links.xml b/Documentation/DocBook/media/v4l/media-ioc-enum-links.xml index 74fb394ec66762..2bbeea9f3e18c8 100644 --- a/Documentation/DocBook/media/v4l/media-ioc-enum-links.xml +++ b/Documentation/DocBook/media/v4l/media-ioc-enum-links.xml @@ -118,35 +118,6 @@ - - Media pad flags - - - - - - MEDIA_PAD_FL_SINK - Input pad, relative to the entity. Input pads sink data and - are targets of links. - - - MEDIA_PAD_FL_SOURCE - Output pad, relative to the entity. Output pads source data - and are origins of links. - - - MEDIA_PAD_FL_MUST_CONNECT - If this flag is set and the pad is linked to any other - pad, then at least one of those links must be enabled for the - entity to be able to stream. There could be temporary reasons - (e.g. device configuration dependent) for the pad to need - enabled links even when this flag isn't set; the absence of the - flag doesn't imply there is none. - - - -
- struct <structname>media_link_desc</structname> @@ -171,33 +142,6 @@ - - Media link flags - - - - - - MEDIA_LNK_FL_ENABLED - The link is enabled and can be used to transfer media data. - When two or more links target a sink pad, only one of them can be - enabled at a time. - - - MEDIA_LNK_FL_IMMUTABLE - The link enabled state can't be modified at runtime. An - immutable link is always enabled. - - - MEDIA_LNK_FL_DYNAMIC - The link enabled state can be modified during streaming. This - flag is set by drivers and is read-only for applications. - - - - - One and only one of MEDIA_PAD_FL_SINK and - MEDIA_PAD_FL_SOURCE must be set for every pad. diff --git a/Documentation/DocBook/media/v4l/media-types.xml b/Documentation/DocBook/media/v4l/media-types.xml new file mode 100644 index 00000000000000..0c5c9c034586d3 --- /dev/null +++ b/Documentation/DocBook/media/v4l/media-types.xml @@ -0,0 +1,166 @@ +
+Types and flags used to represent the media graph elements + + + Media entity types + + + + + + MEDIA_ENT_F_UNKNOWN and MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN + Unknown entity. That generally indicates that + a driver didn't initialize properly the entity, with is a Kernel bug + + + MEDIA_ENT_F_IO_V4L + Data streaming input and/or output entity. + + + MEDIA_ENT_F_IO_VBI + V4L VBI streaming input or output entity + + + MEDIA_ENT_F_IO_SWRADIO + V4L Software Digital Radio (SDR) streaming input or output entity + + + MEDIA_ENT_F_IO_DTV + DVB Digital TV streaming input or output entity + + + MEDIA_ENT_F_DTV_DEMOD + Digital TV demodulator entity. + + + MEDIA_ENT_F_MPEG_TS_DEMUX + MPEG Transport stream demux entity. Could be implemented on hardware or in Kernelspace by the Linux DVB subsystem. + + + MEDIA_ENT_F_DTV_CA + Digital TV Conditional Access module (CAM) entity + + + MEDIA_ENT_F_DTV_NET_DECAP + Digital TV network ULE/MLE desencapsulation entity. Could be implemented on hardware or in Kernelspace + + + MEDIA_ENT_F_CONN_RF + Connector for a Radio Frequency (RF) signal. + + + MEDIA_ENT_F_CONN_SVIDEO + Connector for a S-Video signal. + + + MEDIA_ENT_F_CONN_COMPOSITE + Connector for a RGB composite signal. + + + MEDIA_ENT_F_CONN_TEST + Connector for a test generator. + + + MEDIA_ENT_F_CAM_SENSOR + Camera video sensor entity. + + + MEDIA_ENT_F_FLASH + Flash controller entity. + + + MEDIA_ENT_F_LENS + Lens controller entity. + + + MEDIA_ENT_F_ATV_DECODER + Analog video decoder, the basic function of the video decoder + is to accept analogue video from a wide variety of sources such as + broadcast, DVD players, cameras and video cassette recorders, in + either NTSC, PAL, SECAM or HD format, separating the stream + into its component parts, luminance and chrominance, and output + it in some digital video standard, with appropriate timing + signals. + + + MEDIA_ENT_F_TUNER + Digital TV, analog TV, radio and/or software radio tuner. + + + +
+ + + Media entity flags + + + + + + MEDIA_ENT_FL_DEFAULT + Default entity for its type. Used to discover the default + audio, VBI and video devices, the default camera sensor, ... + + + +
+ + + Media pad flags + + + + + + MEDIA_PAD_FL_SINK + Input pad, relative to the entity. Input pads sink data and + are targets of links. + + + MEDIA_PAD_FL_SOURCE + Output pad, relative to the entity. Output pads source data + and are origins of links. + + + MEDIA_PAD_FL_MUST_CONNECT + If this flag is set and the pad is linked to any other + pad, then at least one of those links must be enabled for the + entity to be able to stream. There could be temporary reasons + (e.g. device configuration dependent) for the pad to need + enabled links even when this flag isn't set; the absence of the + flag doesn't imply there is none. + + + +
+ + One and only one of MEDIA_PAD_FL_SINK and + MEDIA_PAD_FL_SOURCE must be set for every pad. + + + Media link flags + + + + + + MEDIA_LNK_FL_ENABLED + The link is enabled and can be used to transfer media data. + When two or more links target a sink pad, only one of them can be + enabled at a time. + + + MEDIA_LNK_FL_IMMUTABLE + The link enabled state can't be modified at runtime. An + immutable link is always enabled. + + + MEDIA_LNK_FL_DYNAMIC + The link enabled state can be modified during streaming. This + flag is set by drivers and is read-only for applications. + + + + + +
-- cgit 1.2.3-korg From eb7d970aa0ab9964fe3200df4daf76c37d35f076 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sat, 12 Dec 2015 10:29:30 -0200 Subject: [media] Docbook: media-types.xml: update the existing tables There were some changes on the media types that were not reflected on the types tables. Update them to reflect the upstream changes. Signed-off-by: Mauro Carvalho Chehab --- Documentation/DocBook/media/v4l/media-types.xml | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/Documentation/DocBook/media/v4l/media-types.xml b/Documentation/DocBook/media/v4l/media-types.xml index 0c5c9c034586d3..4a6038301e06eb 100644 --- a/Documentation/DocBook/media/v4l/media-types.xml +++ b/Documentation/DocBook/media/v4l/media-types.xml @@ -33,7 +33,7 @@ Digital TV demodulator entity. - MEDIA_ENT_F_MPEG_TS_DEMUX + MEDIA_ENT_F_TS_DEMUX MPEG Transport stream demux entity. Could be implemented on hardware or in Kernelspace by the Linux DVB subsystem. @@ -101,6 +101,10 @@ Default entity for its type. Used to discover the default audio, VBI and video devices, the default camera sensor, ... + + MEDIA_ENT_FL_CONNECTOR + The entity represents a data conector + @@ -159,6 +163,15 @@ The link enabled state can be modified during streaming. This flag is set by drivers and is read-only for applications. + + MEDIA_LNK_FL_LINK_TYPE + This is a bitmask that defines the type of the link. + Currently, two types of links are supported: + MEDIA_LNK_FL_DATA_LINK + if the link is between two pads + MEDIA_LNK_FL_INTERFACE_LINK + if the link is between an interface and an entity + -- cgit 1.2.3-korg From dc7339bf119111d5c08156980ea742fc4120ce19 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sat, 12 Dec 2015 10:54:45 -0200 Subject: [media] DocBook: add a table for Media Controller interfaces Document the media controller interfaces at the media uAPI docbook. Signed-off-by: Mauro Carvalho Chehab --- Documentation/DocBook/media/v4l/media-types.xml | 61 +++++++++++++++++++++++++ 1 file changed, 61 insertions(+) diff --git a/Documentation/DocBook/media/v4l/media-types.xml b/Documentation/DocBook/media/v4l/media-types.xml index 4a6038301e06eb..1af3842509105e 100644 --- a/Documentation/DocBook/media/v4l/media-types.xml +++ b/Documentation/DocBook/media/v4l/media-types.xml @@ -109,6 +109,67 @@ + + Media interface types + + + + + + + MEDIA_INTF_T_DVB_FE + Device node interface for the Digital TV frontend + typically, /dev/dvb/adapter?/frontend? + + + MEDIA_INTF_T_DVB_DEMUX + Device node interface for the Digital TV demux + typically, /dev/dvb/adapter?/demux? + + + MEDIA_INTF_T_DVB_DVR + Device node interface for the Digital TV DVR + typically, /dev/dvb/adapter?/dvr? + + + MEDIA_INTF_T_DVB_CA + Device node interface for the Digital TV Conditional Access + typically, /dev/dvb/adapter?/ca? + + + MEDIA_INTF_T_DVB_FE + Device node interface for the Digital TV network control + typically, /dev/dvb/adapter?/net? + + + MEDIA_INTF_T_V4L_VIDEO + Device node interface for video (V4L) + typically, /dev/video? + + + MEDIA_INTF_T_V4L_VBI + Device node interface for VBI (V4L) + typically, /dev/vbi? + + + MEDIA_INTF_T_V4L_RADIO + Device node interface for radio (V4L) + typically, /dev/vbi? + + + MEDIA_INTF_T_V4L_SUBDEV + Device node interface for a V4L subdevice + typically, /dev/v4l-subdev? + + + MEDIA_INTF_T_V4L_SWRADIO + Device node interface for Software Defined Radio (V4L) + typically, /dev/swradio? + + + +
+ Media pad flags -- cgit 1.2.3-korg From 677cb4bfc23e7fd8f49d2d10af64f171942fab84 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sat, 12 Dec 2015 10:56:13 -0200 Subject: [media] DocBook: Document MEDIA_IOC_G_TOPOLOGY Add description for this new media controller ioctl. Signed-off-by: Mauro Carvalho Chehab --- .../DocBook/media/v4l/media-controller.xml | 1 + .../DocBook/media/v4l/media-ioc-g-topology.xml | 391 +++++++++++++++++++++ 2 files changed, 392 insertions(+) create mode 100644 Documentation/DocBook/media/v4l/media-ioc-g-topology.xml diff --git a/Documentation/DocBook/media/v4l/media-controller.xml b/Documentation/DocBook/media/v4l/media-controller.xml index 63d48decaa6f1d..5f2fc07a93d72a 100644 --- a/Documentation/DocBook/media/v4l/media-controller.xml +++ b/Documentation/DocBook/media/v4l/media-controller.xml @@ -98,6 +98,7 @@ &sub-media-func-ioctl; &sub-media-ioc-device-info; + &sub-media-ioc-g-topology; &sub-media-ioc-enum-entities; &sub-media-ioc-enum-links; &sub-media-ioc-setup-link; diff --git a/Documentation/DocBook/media/v4l/media-ioc-g-topology.xml b/Documentation/DocBook/media/v4l/media-ioc-g-topology.xml new file mode 100644 index 00000000000000..e0d49fa329f095 --- /dev/null +++ b/Documentation/DocBook/media/v4l/media-ioc-g-topology.xml @@ -0,0 +1,391 @@ + + + ioctl MEDIA_IOC_G_TOPOLOGY + &manvol; + + + + MEDIA_IOC_G_TOPOLOGY + Enumerate the graph topology and graph element properties + + + + + + int ioctl + int fd + int request + struct media_v2_topology *argp + + + + + + Arguments + + + + fd + + File descriptor returned by + open(). + + + + request + + MEDIA_IOC_G_TOPOLOGY + + + + argp + + + + + + + + + Description + The typical usage of this ioctl is to call it twice. + On the first call, the structure defined at &media-v2-topology; should + be zeroed. At return, if no errors happen, this ioctl will return the + topology_version and the total number of entities, + interfaces, pads and links. + Before the second call, the userspace should allocate arrays to + store the graph elements that are desired, putting the pointers to them + at the ptr_entities, ptr_interfaces, ptr_links and/or ptr_pads, keeping + the other values untouched. + If the topology_version remains the same, the + ioctl should fill the desired arrays with the media graph elements. + +
+ struct <structname>media_v2_topology</structname> + + + + + + + + + __u64 + topology_version + + + Version of the media graph topology. When the graph is + created, this field starts with zero. Every time a graph + element is added or removed, this field is + incremented. + + + __u64 + num_entities + + + Number of entities in the graph + + + __u64 + ptr_entities + + + A pointer to a memory area where the entities array + will be stored, converted to a 64-bits integer. + It can be zero. if zero, the ioctl won't store the + entities. It will just update + num_entities + + + __u64 + num_interfaces + + + Number of interfaces in the graph + + + __u64 + ptr_interfaces + + + A pointer to a memory area where the interfaces array + will be stored, converted to a 64-bits integer. + It can be zero. if zero, the ioctl won't store the + interfaces. It will just update + num_interfaces + + + __u64 + num_pads + + + Total number of pads in the graph + + + __u64 + ptr_pads + + + A pointer to a memory area where the pads array + will be stored, converted to a 64-bits integer. + It can be zero. if zero, the ioctl won't store the + pads. It will just update + num_pads + + + __u64 + num_links + + + Total number of data and interface links in the graph + + + __u64 + ptr_links + + + A pointer to a memory area where the links array + will be stored, converted to a 64-bits integer. + It can be zero. if zero, the ioctl won't store the + links. It will just update + num_links + + + +
+ + + struct <structname>media_v2_entity</structname> + + + + + + + + + __u32 + id + + + Unique ID for the entity. + + + char + name[64] + + + Entity name as an UTF-8 NULL-terminated string. + + + __u32 + function + + + Entity main function, see for details. + + + __u32 + reserved[12] + Reserved for future extensions. Drivers and applications must + set this array to zero. + + + +
+ + + struct <structname>media_v2_interface</structname> + + + + + + + + + __u32 + id + + + Unique ID for the interface. + + + __u32 + intf_type + + + Interface type, see for details. + + + __u32 + flags + + + Interface flags. Currently unused. + + + __u32 + reserved[9] + + + Reserved for future extensions. Drivers and applications must + set this array to zero. + + + struct media_v2_intf_devnode + devnode + + + Used only for device node interfaces. See for details.. + + + +
+ + + struct <structname>media_v2_interface</structname> + + + + + + + + + __u32 + major + + + Device node major number. + + + __u32 + minor + + + Device node minor number. + + + +
+ + + struct <structname>media_v2_pad</structname> + + + + + + + + + __u32 + id + + + Unique ID for the pad. + + + __u32 + entity_id + + + Unique ID for the entity where this pad belongs. + + + __u32 + flags + + + Pad flags, see for more details. + + + __u32 + reserved[9] + + + Reserved for future extensions. Drivers and applications must + set this array to zero. + + + +
+ + + struct <structname>media_v2_pad</structname> + + + + + + + + + __u32 + id + + + Unique ID for the pad. + + + __u32 + source_id + + + + On pad to pad links: unique ID for the source pad. + On interface to entity links: unique ID for the interface. + + + + __u32 + sink_id + + + + On pad to pad links: unique ID for the sink pad. + On interface to entity links: unique ID for the entity. + + + + __u32 + flags + + + Link flags, see for more details. + + + __u32 + reserved[5] + + + Reserved for future extensions. Drivers and applications must + set this array to zero. + + + + + + + + + &return-value; + + + + ENOSPC + + This is returned when either one or more of the num_entities, + num_interfaces, num_links or num_pads are non-zero and are smaller + than the actual number of elements inside the graph. This may happen + if the topology_version changed when compared + to the last time this ioctl was called. Userspace should usually + free the area for the pointers, zero the struct elements and call + this ioctl again. + + + + + -- cgit 1.2.3-korg From 8aaf62b5b9bef73978973e4b825c7818528d3ca2 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Sun, 29 Nov 2015 17:20:02 -0200 Subject: [media] media: Enforce single entity->pipe in a pipeline If a different entity->pipe in a pipeline was encountered, a warning was issued but the execution continued as if nothing had happened. Return an error instead right there. Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 6926e0685d0aa2..4822763dcefac2 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -323,7 +323,12 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity, DECLARE_BITMAP(has_no_links, MEDIA_ENTITY_MAX_PADS); entity->stream_count++; - WARN_ON(entity->pipe && entity->pipe != pipe); + + if (WARN_ON(entity->pipe && entity->pipe != pipe)) { + ret = -EBUSY; + goto error; + } + entity->pipe = pipe; /* Already streaming --- no need to check. */ -- cgit 1.2.3-korg From 60266185d7f3eeae5714090e1e10840b96df91d2 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sun, 13 Dec 2015 08:20:46 -0200 Subject: [media] media-entity.h: Document some ancillary functions Add a basic documentation for most ancillary functions. Signed-off-by: Mauro Carvalho Chehab --- include/media/media-entity.h | 58 +++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 57 insertions(+), 1 deletion(-) diff --git a/include/media/media-entity.h b/include/media/media-entity.h index d073b205e6a6da..81aca1f5a09afc 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -238,11 +238,21 @@ struct media_intf_devnode { u32 minor; }; +/** + * media_entity_id() - return the media entity graph object id + * + * @entity: pointer to entity + */ static inline u32 media_entity_id(struct media_entity *entity) { return entity->graph_obj.id; } +/** + * media_type() - return the media object type + * + * @gobj: pointer to the media graph object + */ static inline enum media_gobj_type media_type(struct media_gobj *gobj) { return gobj->id >> MEDIA_BITS_PER_LOCAL_ID; @@ -263,6 +273,15 @@ static inline u32 media_gobj_gen_id(enum media_gobj_type type, u32 local_id) return id; } +/** + * is_media_entity_v4l2_io() - identify if the entity main function + * is a V4L2 I/O + * + * @entity: pointer to entity + * + * Return: true if the entity main function is one of the V4L2 I/O types + * (video, VBI or SDR radio); false otherwise. + */ static inline bool is_media_entity_v4l2_io(struct media_entity *entity) { if (!entity) @@ -278,6 +297,16 @@ static inline bool is_media_entity_v4l2_io(struct media_entity *entity) } } +/** + * is_media_entity_v4l2_subdev - return true if the entity main function is + * associated with the V4L2 API subdev usage + * + * @entity: pointer to entity + * + * This is an ancillary function used by subdev-based V4L2 drivers. + * It checks if the entity function is one of functions used by a V4L2 subdev, + * e. g. camera-relatef functions, analog TV decoder, TV tuner, V4L2 DSPs. + */ static inline bool is_media_entity_v4l2_subdev(struct media_entity *entity) { if (!entity) @@ -652,16 +681,43 @@ struct media_link * __must_check media_create_intf_link(struct media_entity *entity, struct media_interface *intf, u32 flags); +/** + * __media_remove_intf_link() - remove a single interface link + * + * @link: pointer to &media_link. + * + * Note: this is an unlocked version of media_remove_intf_link() + */ void __media_remove_intf_link(struct media_link *link); + +/** + * media_remove_intf_link() - remove a single interface link + * + * @link: pointer to &media_link. + * + * Note: prefer to use this one, instead of __media_remove_intf_link() + */ void media_remove_intf_link(struct media_link *link); + +/** + * __media_remove_intf_links() - remove all links associated with an interface + * + * @intf: pointer to &media_interface + * + * Note: this is an unlocked version of media_remove_intf_links(). + */ void __media_remove_intf_links(struct media_interface *intf); /** * media_remove_intf_links() - remove all links associated with an interface * * @intf: pointer to &media_interface * - * Note: this is called automatically when an entity is unregistered via + * Notes: + * + * this is called automatically when an entity is unregistered via * media_device_register_entity() and by media_devnode_remove(). + * + * Prefer to use this one, instead of __media_remove_intf_links(). */ void media_remove_intf_links(struct media_interface *intf); -- cgit 1.2.3-korg From b6e4ca8129ad65a0b1552586c1d42d2fd219661e Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sun, 13 Dec 2015 08:36:58 -0200 Subject: [media] media-device.h: document the last functions Add kernel-doc documentation for media_device_get_devres and media_device_find_devres. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 7 ------- include/media/media-device.h | 22 ++++++++++++++++++++++ 2 files changed, 22 insertions(+), 7 deletions(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index c12481c753a011..ca16bd3091bd6d 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -689,10 +689,6 @@ static void media_device_release_devres(struct device *dev, void *res) { } -/* - * media_device_get_devres() - get media device as device resource - * creates if one doesn't exist -*/ struct media_device *media_device_get_devres(struct device *dev) { struct media_device *mdev; @@ -709,9 +705,6 @@ struct media_device *media_device_get_devres(struct device *dev) } EXPORT_SYMBOL_GPL(media_device_get_devres); -/* - * media_device_find_devres() - find media device as device resource -*/ struct media_device *media_device_find_devres(struct device *dev) { return devres_find(dev, media_device_release_devres, NULL, NULL); diff --git a/include/media/media-device.h b/include/media/media-device.h index 215a0d88241d46..ebc2f3a239eb09 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -449,7 +449,29 @@ int __must_check media_device_register_entity(struct media_device *mdev, * the driver if required. */ void media_device_unregister_entity(struct media_entity *entity); + +/** + * media_device_get_devres() - get media device as device resource + * creates if one doesn't exist + * + * @dev: pointer to struct &device. + * + * Sometimes, the media controller &media_device needs to be shared by more + * than one driver. This function adds support for that, by dynamically + * allocating the &media_device and allowing it to be obtained from the + * struct &device associated with the common device where all sub-device + * components belong. So, for example, on an USB device with multiple + * interfaces, each interface may be handled by a separate per-interface + * drivers. While each interface have its own &device, they all share a + * common &device associated with the hole USB device. + */ struct media_device *media_device_get_devres(struct device *dev); + +/** + * media_device_find_devres() - find media device as device resource + * + * @dev: pointer to struct &device. + */ struct media_device *media_device_find_devres(struct device *dev); /* Iterate over all entities. */ -- cgit 1.2.3-korg From fe3c565e4cbcb2adeef063accc7852de739aaa36 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sun, 13 Dec 2015 08:40:45 -0200 Subject: [media] media-devnode: move kernel-doc documentation to the header As we're using the headers file only for documentation, move the two kernel-doc macros to the header, and fix it to avoid warnings. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-devnode.c | 24 ------------------------ include/media/media-devnode.h | 27 +++++++++++++++++++++++++++ 2 files changed, 27 insertions(+), 24 deletions(-) diff --git a/drivers/media/media-devnode.c b/drivers/media/media-devnode.c index ebf9626e5ae5a7..cea35bf2001170 100644 --- a/drivers/media/media-devnode.c +++ b/drivers/media/media-devnode.c @@ -217,20 +217,6 @@ static const struct file_operations media_devnode_fops = { .llseek = no_llseek, }; -/** - * media_devnode_register - register a media device node - * @mdev: media device node structure we want to register - * - * The registration code assigns minor numbers and registers the new device node - * with the kernel. An error is returned if no free minor number can be found, - * or if the registration of the device node fails. - * - * Zero is returned on success. - * - * Note that if the media_devnode_register call fails, the release() callback of - * the media_devnode structure is *not* called, so the caller is responsible for - * freeing any data. - */ int __must_check media_devnode_register(struct media_devnode *mdev, struct module *owner) { @@ -285,16 +271,6 @@ error: return ret; } -/** - * media_devnode_unregister - unregister a media device node - * @mdev: the device node to unregister - * - * This unregisters the passed device. Future open calls will be met with - * errors. - * - * This function can safely be called if the device node has never been - * registered or has already been unregistered. - */ void media_devnode_unregister(struct media_devnode *mdev) { /* Check if mdev was ever registered at all */ diff --git a/include/media/media-devnode.h b/include/media/media-devnode.h index 17ddae32060d25..77e9d3159be892 100644 --- a/include/media/media-devnode.h +++ b/include/media/media-devnode.h @@ -86,8 +86,35 @@ struct media_devnode { /* dev to media_devnode */ #define to_media_devnode(cd) container_of(cd, struct media_devnode, dev) +/** + * media_devnode_register - register a media device node + * + * @mdev: media device node structure we want to register + * @owner: should be filled with %THIS_MODULE + * + * The registration code assigns minor numbers and registers the new device node + * with the kernel. An error is returned if no free minor number can be found, + * or if the registration of the device node fails. + * + * Zero is returned on success. + * + * Note that if the media_devnode_register call fails, the release() callback of + * the media_devnode structure is *not* called, so the caller is responsible for + * freeing any data. + */ int __must_check media_devnode_register(struct media_devnode *mdev, struct module *owner); + +/** + * media_devnode_unregister - unregister a media device node + * @mdev: the device node to unregister + * + * This unregisters the passed device. Future open calls will be met with + * errors. + * + * This function can safely be called if the device node has never been + * registered or has already been unregistered. + */ void media_devnode_unregister(struct media_devnode *mdev); static inline struct media_devnode *media_devnode_data(struct file *filp) -- cgit 1.2.3-korg From 75c7e295707e7a9d13691377f2154dcbae9a25f8 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Sun, 13 Dec 2015 09:00:00 -0200 Subject: [media] media-devnode.h: document the remaining struct/functions There is one struct and two functions that were not documented. Add the corresponding kernel-doc documentation for them. Signed-off-by: Mauro Carvalho Chehab --- include/media/media-devnode.h | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/include/media/media-devnode.h b/include/media/media-devnode.h index 77e9d3159be892..fe42f08e72bdc5 100644 --- a/include/media/media-devnode.h +++ b/include/media/media-devnode.h @@ -40,6 +40,20 @@ */ #define MEDIA_FLAG_REGISTERED 0 +/** + * struct media_file_operations - Media device file operations + * + * @owner: should be filled with %THIS_MODULE + * @read: pointer to the function that implements read() syscall + * @write: pointer to the function that implements write() syscall + * @poll: pointer to the function that implements poll() syscall + * @ioctl: pointer to the function that implements ioctl() syscall + * @compat_ioctl: pointer to the function that will handle 32 bits userspace + * calls to the the ioctl() syscall on a Kernel compiled with 64 bits. + * @open: pointer to the function that implements open() syscall + * @release: pointer to the function that will release the resources allocated + * by the @open function. + */ struct media_file_operations { struct module *owner; ssize_t (*read) (struct file *, char __user *, size_t, loff_t *); @@ -53,7 +67,7 @@ struct media_file_operations { /** * struct media_devnode - Media device node - * @fops: pointer to struct media_file_operations with media device ops + * @fops: pointer to struct &media_file_operations with media device ops * @dev: struct device pointer for the media controller device * @cdev: struct cdev pointer character device * @parent: parent device @@ -117,11 +131,22 @@ int __must_check media_devnode_register(struct media_devnode *mdev, */ void media_devnode_unregister(struct media_devnode *mdev); +/** + * media_devnode_data - returns a pointer to the &media_devnode + * + * @filp: pointer to struct &file + */ static inline struct media_devnode *media_devnode_data(struct file *filp) { return filp->private_data; } +/** + * media_devnode_is_registered - returns true if &media_devnode is registered; + * false otherwise. + * + * @mdev: pointer to struct &media_devnode. + */ static inline int media_devnode_is_registered(struct media_devnode *mdev) { return test_bit(MEDIA_FLAG_REGISTERED, &mdev->flags); -- cgit 1.2.3-korg From 5c883edb5b2c34e96e57037c95f9a72c4feccc50 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 15 Dec 2015 07:58:18 -0200 Subject: [media] media-entity: use mutes for link setup Changeset f8fd4c61b5ae ("[media] media-entity: protect object creation/removal using spin lock") changed the object creation/removal protection to spin lock, as this is what's used on media-device, keeping the mutex reserved for graph traversal routines. However, it also changed the link setup, by mistake. This could cause troubles, as the link setup can affect the graph traversal, and this is likely the reason for a mutex there. So, revert media_entity_setup_link() to use mutex. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 4822763dcefac2..f88740b12879d7 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -662,9 +662,9 @@ int media_entity_setup_link(struct media_link *link, u32 flags) { int ret; - spin_lock(&link->source->entity->graph_obj.mdev->lock); + mutex_lock(&link->graph_obj.mdev->graph_mutex); ret = __media_entity_setup_link(link, flags); - spin_unlock(&link->source->entity->graph_obj.mdev->lock); + mutex_unlock(&link->graph_obj.mdev->graph_mutex); return ret; } -- cgit 1.2.3-korg From cc4a82581cb604444b0f9f2e7d999624964695e2 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 15 Dec 2015 08:01:13 -0200 Subject: [media] media-entity: cache media_device on object removal As pointed by Dan, the commit f8fd4c61b5ae ("[media] media-entity: protect object creation/removal using spin lock")' leads to the following static checker warning: drivers/media/media-entity.c:781 media_remove_intf_link() error: dereferencing freed memory 'link' drivers/media/media-entity.c 777 void media_remove_intf_link(struct media_link *link) 778 { 779 spin_lock(&link->graph_obj.mdev->lock); 780 __media_remove_intf_link(link); 781 spin_unlock(&link->graph_obj.mdev->lock); In practice, I didn't see any troubles even with KASAN enabled. I guess gcc optimizer internally cached the mdev reference, instead of getting it twice. Yet, it is a very bad idea to rely on such optimization. So, let's fix the code. Reported-by: Dan Carpenter Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 26 ++++++++++++++++++-------- 1 file changed, 18 insertions(+), 8 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index f88740b12879d7..13c8ca11f169ef 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -580,13 +580,15 @@ EXPORT_SYMBOL_GPL(__media_entity_remove_links); void media_entity_remove_links(struct media_entity *entity) { + struct media_device *mdev = entity->graph_obj.mdev; + /* Do nothing if the entity is not registered. */ - if (entity->graph_obj.mdev == NULL) + if (mdev == NULL) return; - spin_lock(&entity->graph_obj.mdev->lock); + spin_lock(&mdev->lock); __media_entity_remove_links(entity); - spin_unlock(&entity->graph_obj.mdev->lock); + spin_unlock(&mdev->lock); } EXPORT_SYMBOL_GPL(media_entity_remove_links); @@ -781,9 +783,15 @@ EXPORT_SYMBOL_GPL(__media_remove_intf_link); void media_remove_intf_link(struct media_link *link) { - spin_lock(&link->graph_obj.mdev->lock); + struct media_device *mdev = link->graph_obj.mdev; + + /* Do nothing if the intf is not registered. */ + if (mdev == NULL) + return; + + spin_lock(&mdev->lock); __media_remove_intf_link(link); - spin_unlock(&link->graph_obj.mdev->lock); + spin_unlock(&mdev->lock); } EXPORT_SYMBOL_GPL(media_remove_intf_link); @@ -799,12 +807,14 @@ EXPORT_SYMBOL_GPL(__media_remove_intf_links); void media_remove_intf_links(struct media_interface *intf) { + struct media_device *mdev = intf->graph_obj.mdev; + /* Do nothing if the intf is not registered. */ - if (intf->graph_obj.mdev == NULL) + if (mdev == NULL) return; - spin_lock(&intf->graph_obj.mdev->lock); + spin_lock(&mdev->lock); __media_remove_intf_links(intf); - spin_unlock(&intf->graph_obj.mdev->lock); + spin_unlock(&mdev->lock); } EXPORT_SYMBOL_GPL(media_remove_intf_links); -- cgit 1.2.3-korg From 223d19c56651a0204253035f9ed28834653d2b4b Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Fri, 11 Dec 2015 20:57:07 -0200 Subject: [media] media-device: check before unregister if mdev was registered Most media functions that unregister, check if the corresponding register function succeed before. So these functions can safely be called even if a registration was never made or the component as already been unregistered. Add the same check to media_device_unregister() function for consistency. This will also allow to split the media_device_register() function in an initialization and registration functions without the need to change the generic cleanup functions and error code paths for all the media drivers. Suggested-by: Sakari Ailus Signed-off-by: Javier Martinez Canillas Acked-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index ca16bd3091bd6d..da4126863ecc94 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -577,6 +577,8 @@ EXPORT_SYMBOL_GPL(__media_device_register); * media_device_unregister - unregister a media device * @mdev: The media device * + * It is safe to call this function on an unregistered + * (but initialised) media device. */ void media_device_unregister(struct media_device *mdev) { @@ -584,6 +586,10 @@ void media_device_unregister(struct media_device *mdev) struct media_entity *next; struct media_interface *intf, *tmp_intf; + /* Check if mdev was ever registered at all */ + if (!media_devnode_is_registered(&mdev->devnode)) + return; + /* Remove all entities from the media device */ list_for_each_entry_safe(entity, next, &mdev->entities, graph_obj.list) media_device_unregister_entity(entity); -- cgit 1.2.3-korg From b2ed8af910a436e12038f8ec8ca6c039f43767a4 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 15 Dec 2015 08:26:52 -0200 Subject: [media] media-device: move media entity register/unregister functions media entity register and unregister functions are called by media device register/unregister. Move them to occur earlier, as we'll need an unlocked version of media_device_entity_unregister() and we don't want to add a function prototype without needing it. No functional changes. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 160 +++++++++++++++++++++---------------------- 1 file changed, 80 insertions(+), 80 deletions(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index da4126863ecc94..1222fa642ad843 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -528,6 +528,86 @@ static void media_device_release(struct media_devnode *mdev) dev_dbg(mdev->parent, "Media device released\n"); } +/** + * media_device_register_entity - Register an entity with a media device + * @mdev: The media device + * @entity: The entity + */ +int __must_check media_device_register_entity(struct media_device *mdev, + struct media_entity *entity) +{ + unsigned int i; + + if (entity->function == MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN || + entity->function == MEDIA_ENT_F_UNKNOWN) + dev_warn(mdev->dev, + "Entity type for entity %s was not initialized!\n", + entity->name); + + /* Warn if we apparently re-register an entity */ + WARN_ON(entity->graph_obj.mdev != NULL); + entity->graph_obj.mdev = mdev; + INIT_LIST_HEAD(&entity->links); + entity->num_links = 0; + entity->num_backlinks = 0; + + spin_lock(&mdev->lock); + /* Initialize media_gobj embedded at the entity */ + media_gobj_create(mdev, MEDIA_GRAPH_ENTITY, &entity->graph_obj); + + /* Initialize objects at the pads */ + for (i = 0; i < entity->num_pads; i++) + media_gobj_create(mdev, MEDIA_GRAPH_PAD, + &entity->pads[i].graph_obj); + + spin_unlock(&mdev->lock); + + return 0; +} +EXPORT_SYMBOL_GPL(media_device_register_entity); + +/** + * media_device_unregister_entity - Unregister an entity + * @entity: The entity + * + * If the entity has never been registered this function will return + * immediately. + */ +void media_device_unregister_entity(struct media_entity *entity) +{ + struct media_device *mdev = entity->graph_obj.mdev; + struct media_link *link, *tmp; + struct media_interface *intf; + unsigned int i; + + if (mdev == NULL) + return; + + spin_lock(&mdev->lock); + + /* Remove all interface links pointing to this entity */ + list_for_each_entry(intf, &mdev->interfaces, graph_obj.list) { + list_for_each_entry_safe(link, tmp, &intf->links, list) { + if (link->entity == entity) + __media_remove_intf_link(link); + } + } + + /* Remove all data links that belong to this entity */ + __media_entity_remove_links(entity); + + /* Remove all pads that belong to this entity */ + for (i = 0; i < entity->num_pads; i++) + media_gobj_destroy(&entity->pads[i].graph_obj); + + /* Remove the entity */ + media_gobj_destroy(&entity->graph_obj); + + spin_unlock(&mdev->lock); + entity->graph_obj.mdev = NULL; +} +EXPORT_SYMBOL_GPL(media_device_unregister_entity); + /** * media_device_register - register a media device * @mdev: The media device @@ -611,86 +691,6 @@ void media_device_unregister(struct media_device *mdev) } EXPORT_SYMBOL_GPL(media_device_unregister); -/** - * media_device_register_entity - Register an entity with a media device - * @mdev: The media device - * @entity: The entity - */ -int __must_check media_device_register_entity(struct media_device *mdev, - struct media_entity *entity) -{ - unsigned int i; - - if (entity->function == MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN || - entity->function == MEDIA_ENT_F_UNKNOWN) - dev_warn(mdev->dev, - "Entity type for entity %s was not initialized!\n", - entity->name); - - /* Warn if we apparently re-register an entity */ - WARN_ON(entity->graph_obj.mdev != NULL); - entity->graph_obj.mdev = mdev; - INIT_LIST_HEAD(&entity->links); - entity->num_links = 0; - entity->num_backlinks = 0; - - spin_lock(&mdev->lock); - /* Initialize media_gobj embedded at the entity */ - media_gobj_create(mdev, MEDIA_GRAPH_ENTITY, &entity->graph_obj); - - /* Initialize objects at the pads */ - for (i = 0; i < entity->num_pads; i++) - media_gobj_create(mdev, MEDIA_GRAPH_PAD, - &entity->pads[i].graph_obj); - - spin_unlock(&mdev->lock); - - return 0; -} -EXPORT_SYMBOL_GPL(media_device_register_entity); - -/** - * media_device_unregister_entity - Unregister an entity - * @entity: The entity - * - * If the entity has never been registered this function will return - * immediately. - */ -void media_device_unregister_entity(struct media_entity *entity) -{ - struct media_device *mdev = entity->graph_obj.mdev; - struct media_link *link, *tmp; - struct media_interface *intf; - unsigned int i; - - if (mdev == NULL) - return; - - spin_lock(&mdev->lock); - - /* Remove all interface links pointing to this entity */ - list_for_each_entry(intf, &mdev->interfaces, graph_obj.list) { - list_for_each_entry_safe(link, tmp, &intf->links, list) { - if (link->entity == entity) - __media_remove_intf_link(link); - } - } - - /* Remove all data links that belong to this entity */ - __media_entity_remove_links(entity); - - /* Remove all pads that belong to this entity */ - for (i = 0; i < entity->num_pads; i++) - media_gobj_destroy(&entity->pads[i].graph_obj); - - /* Remove the entity */ - media_gobj_destroy(&entity->graph_obj); - - spin_unlock(&mdev->lock); - entity->graph_obj.mdev = NULL; -} -EXPORT_SYMBOL_GPL(media_device_unregister_entity); - static void media_device_release_devres(struct device *dev, void *res) { } -- cgit 1.2.3-korg From 821ed3662913faca0653c201fa9e36fbab81f17c Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 15 Dec 2015 08:36:51 -0200 Subject: [media] media-device: better lock media_device_unregister() If media_device_unregister() is called by two different drivers, a race condition may happen, as the check if the device is not registered is not protected. Move the spin_lock() to happen earlier in the function, in order to prevent such race condition. Reported-by: Shuah Khan Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 34 ++++++++++++++++++++++++---------- 1 file changed, 24 insertions(+), 10 deletions(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 1222fa642ad843..189c2ba8c3d353 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -573,18 +573,13 @@ EXPORT_SYMBOL_GPL(media_device_register_entity); * If the entity has never been registered this function will return * immediately. */ -void media_device_unregister_entity(struct media_entity *entity) +static void __media_device_unregister_entity(struct media_entity *entity) { struct media_device *mdev = entity->graph_obj.mdev; struct media_link *link, *tmp; struct media_interface *intf; unsigned int i; - if (mdev == NULL) - return; - - spin_lock(&mdev->lock); - /* Remove all interface links pointing to this entity */ list_for_each_entry(intf, &mdev->interfaces, graph_obj.list) { list_for_each_entry_safe(link, tmp, &intf->links, list) { @@ -603,11 +598,23 @@ void media_device_unregister_entity(struct media_entity *entity) /* Remove the entity */ media_gobj_destroy(&entity->graph_obj); - spin_unlock(&mdev->lock); entity->graph_obj.mdev = NULL; } + +void media_device_unregister_entity(struct media_entity *entity) +{ + struct media_device *mdev = entity->graph_obj.mdev; + + if (mdev == NULL) + return; + + spin_lock(&mdev->lock); + __media_device_unregister_entity(entity); + spin_unlock(&mdev->lock); +} EXPORT_SYMBOL_GPL(media_device_unregister_entity); + /** * media_device_register - register a media device * @mdev: The media device @@ -666,22 +673,29 @@ void media_device_unregister(struct media_device *mdev) struct media_entity *next; struct media_interface *intf, *tmp_intf; + if (mdev == NULL) + return; + + spin_lock(&mdev->lock); + /* Check if mdev was ever registered at all */ - if (!media_devnode_is_registered(&mdev->devnode)) + if (!media_devnode_is_registered(&mdev->devnode)) { + spin_unlock(&mdev->lock); return; + } /* Remove all entities from the media device */ list_for_each_entry_safe(entity, next, &mdev->entities, graph_obj.list) - media_device_unregister_entity(entity); + __media_device_unregister_entity(entity); /* Remove all interfaces from the media device */ - spin_lock(&mdev->lock); list_for_each_entry_safe(intf, tmp_intf, &mdev->interfaces, graph_obj.list) { __media_remove_intf_links(intf); media_gobj_destroy(&intf->graph_obj); kfree(intf); } + spin_unlock(&mdev->lock); device_remove_file(&mdev->devnode.dev, &dev_attr_model); -- cgit 1.2.3-korg From 9832e155f1ed3030fdfaa19e72c06472dc2ecb1d Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Fri, 11 Dec 2015 20:57:08 -0200 Subject: [media] media-device: split media initialization and registration The media device node is registered and so made visible to user-space before entities are registered and links created which means that the media graph obtained by user-space could be only partially enumerated if that happens too early before all the graph has been created. To avoid this race condition, split the media init and registration in separate functions and only register the media device node when all the pending subdevices have been registered, either explicitly by the driver or asynchronously using v4l2_async_register_subdev(). The media_device_register() had a check for drivers not filling dev and model fields but all drivers in mainline set them and not doing it will be a driver bug so change the function return to void and add a BUG_ON() for dev being NULL instead. Also, add a media_device_cleanup() function that will destroy the graph_mutex that is initialized in media_device_init(). [mchehab@osg.samsung.com: Fix compilation if !CONFIG_MEDIA_CONTROLLER and remove two warnings added by this changeset] Suggested-by: Sakari Ailus Signed-off-by: Javier Martinez Canillas Acked-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/common/siano/smsdvb-main.c | 1 + drivers/media/media-device.c | 37 +++++++++++++++++++++------ drivers/media/platform/exynos4-is/media-dev.c | 15 +++++------ drivers/media/platform/omap3isp/isp.c | 14 +++++----- drivers/media/platform/s3c-camif/camif-core.c | 15 +++++++---- drivers/media/platform/vsp1/vsp1_drv.c | 12 ++++----- drivers/media/platform/xilinx/xilinx-vipp.c | 12 +++------ drivers/media/usb/au0828/au0828-core.c | 29 +++++++++++---------- drivers/media/usb/cx231xx/cx231xx-cards.c | 32 +++++++++++------------ drivers/media/usb/dvb-usb-v2/dvb_usb_core.c | 23 +++++++++-------- drivers/media/usb/dvb-usb/dvb-usb-dvb.c | 25 ++++++++++-------- drivers/media/usb/siano/smsusb.c | 5 ++-- drivers/media/usb/uvc/uvc_driver.c | 11 +++++--- include/media/media-device.h | 26 +++++++++++++++++++ 14 files changed, 158 insertions(+), 99 deletions(-) diff --git a/drivers/media/common/siano/smsdvb-main.c b/drivers/media/common/siano/smsdvb-main.c index ab345490a43add..8a1ea219243944 100644 --- a/drivers/media/common/siano/smsdvb-main.c +++ b/drivers/media/common/siano/smsdvb-main.c @@ -617,6 +617,7 @@ static void smsdvb_media_device_unregister(struct smsdvb_client_t *client) if (!coredev->media_dev) return; media_device_unregister(coredev->media_dev); + media_device_cleanup(coredev->media_dev); kfree(coredev->media_dev); coredev->media_dev = NULL; #endif diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 189c2ba8c3d353..b718c783debd68 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -616,7 +616,7 @@ EXPORT_SYMBOL_GPL(media_device_unregister_entity); /** - * media_device_register - register a media device + * media_device_init() - initialize a media device * @mdev: The media device * * The caller is responsible for initializing the media device before @@ -625,14 +625,8 @@ EXPORT_SYMBOL_GPL(media_device_unregister_entity); * - dev must point to the parent device * - model must be filled with the device model name */ -int __must_check __media_device_register(struct media_device *mdev, - struct module *owner) +void media_device_init(struct media_device *mdev) { - int ret; - - if (WARN_ON(mdev->dev == NULL || mdev->model[0] == 0)) - return -EINVAL; - INIT_LIST_HEAD(&mdev->entities); INIT_LIST_HEAD(&mdev->interfaces); INIT_LIST_HEAD(&mdev->pads); @@ -640,6 +634,33 @@ int __must_check __media_device_register(struct media_device *mdev, spin_lock_init(&mdev->lock); mutex_init(&mdev->graph_mutex); + dev_dbg(mdev->dev, "Media device initialized\n"); +} +EXPORT_SYMBOL_GPL(media_device_init); + +/** + * media_device_cleanup() - Cleanup a media device + * @mdev: The media device + * + */ +void media_device_cleanup(struct media_device *mdev) +{ + mutex_destroy(&mdev->graph_mutex); +} +EXPORT_SYMBOL_GPL(media_device_cleanup); + +/** + * __media_device_register() - register a media device + * @mdev: The media device + * @owner: The module owner + * + * returns zero on success or a negative error code. + */ +int __must_check __media_device_register(struct media_device *mdev, + struct module *owner) +{ + int ret; + /* Register the device node. */ mdev->devnode.fops = &media_device_fops; mdev->devnode.parent = mdev->dev; diff --git a/drivers/media/platform/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c index a61ecedc12015c..27663dd4529490 100644 --- a/drivers/media/platform/exynos4-is/media-dev.c +++ b/drivers/media/platform/exynos4-is/media-dev.c @@ -1313,7 +1313,10 @@ static int subdev_notifier_complete(struct v4l2_async_notifier *notifier) ret = v4l2_device_register_subdev_nodes(&fmd->v4l2_dev); unlock: mutex_unlock(&fmd->media_dev.graph_mutex); - return ret; + if (ret < 0) + return ret; + + return media_device_register(&fmd->media_dev); } static int fimc_md_probe(struct platform_device *pdev) @@ -1350,11 +1353,7 @@ static int fimc_md_probe(struct platform_device *pdev) return ret; } - ret = media_device_register(&fmd->media_dev); - if (ret < 0) { - v4l2_err(v4l2_dev, "Failed to register media device: %d\n", ret); - goto err_v4l2_dev; - } + media_device_init(&fmd->media_dev); ret = fimc_md_get_clocks(fmd); if (ret) @@ -1424,8 +1423,7 @@ err_clk: err_m_ent: fimc_md_unregister_entities(fmd); err_md: - media_device_unregister(&fmd->media_dev); -err_v4l2_dev: + media_device_cleanup(&fmd->media_dev); v4l2_device_unregister(&fmd->v4l2_dev); return ret; } @@ -1445,6 +1443,7 @@ static int fimc_md_remove(struct platform_device *pdev) fimc_md_unregister_entities(fmd); fimc_md_pipelines_free(fmd); media_device_unregister(&fmd->media_dev); + media_device_cleanup(&fmd->media_dev); fimc_md_put_clocks(fmd); return 0; diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c index 8226eca833279f..942b189c0eca5e 100644 --- a/drivers/media/platform/omap3isp/isp.c +++ b/drivers/media/platform/omap3isp/isp.c @@ -1793,6 +1793,7 @@ static void isp_unregister_entities(struct isp_device *isp) v4l2_device_unregister(&isp->v4l2_dev); media_device_unregister(&isp->media_dev); + media_device_cleanup(&isp->media_dev); } static int isp_link_entity( @@ -1875,12 +1876,7 @@ static int isp_register_entities(struct isp_device *isp) sizeof(isp->media_dev.model)); isp->media_dev.hw_revision = isp->revision; isp->media_dev.link_notify = isp_pipeline_link_notify; - ret = media_device_register(&isp->media_dev); - if (ret < 0) { - dev_err(isp->dev, "%s: Media device registration failed (%d)\n", - __func__, ret); - return ret; - } + media_device_init(&isp->media_dev); isp->v4l2_dev.mdev = &isp->media_dev; ret = v4l2_device_register(isp->dev, &isp->v4l2_dev); @@ -2365,7 +2361,11 @@ static int isp_subdev_notifier_complete(struct v4l2_async_notifier *async) } } - return v4l2_device_register_subdev_nodes(v4l2_dev); + ret = v4l2_device_register_subdev_nodes(&isp->v4l2_dev); + if (ret < 0) + return ret; + + return media_device_register(&isp->media_dev); } /* diff --git a/drivers/media/platform/s3c-camif/camif-core.c b/drivers/media/platform/s3c-camif/camif-core.c index 8649d4c0e90d5d..ea02b7ef2119ba 100644 --- a/drivers/media/platform/s3c-camif/camif-core.c +++ b/drivers/media/platform/s3c-camif/camif-core.c @@ -305,7 +305,7 @@ static void camif_unregister_media_entities(struct camif_dev *camif) /* * Media device */ -static int camif_media_dev_register(struct camif_dev *camif) +static int camif_media_dev_init(struct camif_dev *camif) { struct media_device *md = &camif->media_dev; struct v4l2_device *v4l2_dev = &camif->v4l2_dev; @@ -328,9 +328,7 @@ static int camif_media_dev_register(struct camif_dev *camif) if (ret < 0) return ret; - ret = media_device_register(md); - if (ret < 0) - v4l2_device_unregister(v4l2_dev); + media_device_init(md); return ret; } @@ -483,7 +481,7 @@ static int s3c_camif_probe(struct platform_device *pdev) goto err_alloc; } - ret = camif_media_dev_register(camif); + ret = camif_media_dev_init(camif); if (ret < 0) goto err_mdev; @@ -510,6 +508,11 @@ static int s3c_camif_probe(struct platform_device *pdev) goto err_unlock; mutex_unlock(&camif->media_dev.graph_mutex); + + ret = media_device_register(&camif->media_dev); + if (ret < 0) + goto err_sens; + pm_runtime_put(dev); return 0; @@ -518,6 +521,7 @@ err_unlock: err_sens: v4l2_device_unregister(&camif->v4l2_dev); media_device_unregister(&camif->media_dev); + media_device_cleanup(&camif->media_dev); camif_unregister_media_entities(camif); err_mdev: vb2_dma_contig_cleanup_ctx(camif->alloc_ctx); @@ -539,6 +543,7 @@ static int s3c_camif_remove(struct platform_device *pdev) struct s3c_camif_plat_data *pdata = &camif->pdata; media_device_unregister(&camif->media_dev); + media_device_cleanup(&camif->media_dev); camif_unregister_media_entities(camif); v4l2_device_unregister(&camif->v4l2_dev); diff --git a/drivers/media/platform/vsp1/vsp1_drv.c b/drivers/media/platform/vsp1/vsp1_drv.c index 0b251147bfff4a..42dff9d020afaf 100644 --- a/drivers/media/platform/vsp1/vsp1_drv.c +++ b/drivers/media/platform/vsp1/vsp1_drv.c @@ -127,6 +127,7 @@ static void vsp1_destroy_entities(struct vsp1_device *vsp1) v4l2_device_unregister(&vsp1->v4l2_dev); media_device_unregister(&vsp1->media_dev); + media_device_cleanup(&vsp1->media_dev); } static int vsp1_create_entities(struct vsp1_device *vsp1) @@ -141,12 +142,7 @@ static int vsp1_create_entities(struct vsp1_device *vsp1) strlcpy(mdev->model, "VSP1", sizeof(mdev->model)); snprintf(mdev->bus_info, sizeof(mdev->bus_info), "platform:%s", dev_name(mdev->dev)); - ret = media_device_register(mdev); - if (ret < 0) { - dev_err(vsp1->dev, "media device registration failed (%d)\n", - ret); - return ret; - } + media_device_init(mdev); vdev->mdev = mdev; ret = v4l2_device_register(vsp1->dev, vdev); @@ -284,6 +280,10 @@ static int vsp1_create_entities(struct vsp1_device *vsp1) } ret = v4l2_device_register_subdev_nodes(&vsp1->v4l2_dev); + if (ret < 0) + goto done; + + ret = media_device_register(mdev); done: if (ret < 0) diff --git a/drivers/media/platform/xilinx/xilinx-vipp.c b/drivers/media/platform/xilinx/xilinx-vipp.c index 2352f7e5a6a3d6..e795a4501e8b4d 100644 --- a/drivers/media/platform/xilinx/xilinx-vipp.c +++ b/drivers/media/platform/xilinx/xilinx-vipp.c @@ -311,7 +311,7 @@ static int xvip_graph_notify_complete(struct v4l2_async_notifier *notifier) if (ret < 0) dev_err(xdev->dev, "failed to register subdev nodes\n"); - return ret; + return media_device_register(&xdev->media_dev); } static int xvip_graph_notify_bound(struct v4l2_async_notifier *notifier, @@ -573,6 +573,7 @@ static void xvip_composite_v4l2_cleanup(struct xvip_composite_device *xdev) { v4l2_device_unregister(&xdev->v4l2_dev); media_device_unregister(&xdev->media_dev); + media_device_cleanup(&xdev->media_dev); } static int xvip_composite_v4l2_init(struct xvip_composite_device *xdev) @@ -584,19 +585,14 @@ static int xvip_composite_v4l2_init(struct xvip_composite_device *xdev) sizeof(xdev->media_dev.model)); xdev->media_dev.hw_revision = 0; - ret = media_device_register(&xdev->media_dev); - if (ret < 0) { - dev_err(xdev->dev, "media device registration failed (%d)\n", - ret); - return ret; - } + media_device_init(&xdev->media_dev); xdev->v4l2_dev.mdev = &xdev->media_dev; ret = v4l2_device_register(xdev->dev, &xdev->v4l2_dev); if (ret < 0) { dev_err(xdev->dev, "V4L2 device registration failed (%d)\n", ret); - media_device_unregister(&xdev->media_dev); + media_device_cleanup(&xdev->media_dev); return ret; } diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c index 1b207fa16a55a0..fbdaeb206565b2 100644 --- a/drivers/media/usb/au0828/au0828-core.c +++ b/drivers/media/usb/au0828/au0828-core.c @@ -136,6 +136,7 @@ static void au0828_unregister_media_device(struct au0828_dev *dev) #ifdef CONFIG_MEDIA_CONTROLLER if (dev->media_dev) { media_device_unregister(dev->media_dev); + media_device_cleanup(dev->media_dev); kfree(dev->media_dev); dev->media_dev = NULL; } @@ -216,12 +217,11 @@ static void au0828_usb_disconnect(struct usb_interface *interface) au0828_usb_release(dev); } -static void au0828_media_device_register(struct au0828_dev *dev, - struct usb_device *udev) +static void au0828_media_device_init(struct au0828_dev *dev, + struct usb_device *udev) { #ifdef CONFIG_MEDIA_CONTROLLER struct media_device *mdev; - int ret; mdev = kzalloc(sizeof(*mdev), GFP_KERNEL); if (!mdev) @@ -239,14 +239,7 @@ static void au0828_media_device_register(struct au0828_dev *dev, mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice); mdev->driver_version = LINUX_VERSION_CODE; - ret = media_device_register(mdev); - if (ret) { - pr_err( - "Couldn't create a media device. Error: %d\n", - ret); - kfree(mdev); - return; - } + media_device_init(mdev); dev->media_dev = mdev; #endif @@ -374,8 +367,8 @@ static int au0828_usb_probe(struct usb_interface *interface, dev->boardnr = id->driver_info; dev->board = au0828_boards[dev->boardnr]; - /* Register the media controller */ - au0828_media_device_register(dev, usbdev); + /* Initialize the media controller */ + au0828_media_device_init(dev, usbdev); #ifdef CONFIG_VIDEO_AU0828_V4L2 dev->v4l2_dev.release = au0828_usb_v4l2_release; @@ -446,9 +439,17 @@ static int au0828_usb_probe(struct usb_interface *interface, if (retval) { pr_err("%s() au0282_dev_register failed to create graph\n", __func__); - au0828_usb_disconnect(interface); + goto done; } +#ifdef CONFIG_MEDIA_CONTROLLER + retval = media_device_register(dev->media_dev); +#endif + +done: + if (retval < 0) + au0828_usb_disconnect(interface); + return retval; } diff --git a/drivers/media/usb/cx231xx/cx231xx-cards.c b/drivers/media/usb/cx231xx/cx231xx-cards.c index 0e1efc59ff58dd..de0026b5265cff 100644 --- a/drivers/media/usb/cx231xx/cx231xx-cards.c +++ b/drivers/media/usb/cx231xx/cx231xx-cards.c @@ -1172,6 +1172,7 @@ static void cx231xx_unregister_media_device(struct cx231xx *dev) #ifdef CONFIG_MEDIA_CONTROLLER if (dev->media_dev) { media_device_unregister(dev->media_dev); + media_device_cleanup(dev->media_dev); kfree(dev->media_dev); dev->media_dev = NULL; } @@ -1205,12 +1206,11 @@ void cx231xx_release_resources(struct cx231xx *dev) clear_bit(dev->devno, &cx231xx_devused); } -static void cx231xx_media_device_register(struct cx231xx *dev, - struct usb_device *udev) +static void cx231xx_media_device_init(struct cx231xx *dev, + struct usb_device *udev) { #ifdef CONFIG_MEDIA_CONTROLLER struct media_device *mdev; - int ret; mdev = kzalloc(sizeof(*mdev), GFP_KERNEL); if (!mdev) @@ -1224,14 +1224,7 @@ static void cx231xx_media_device_register(struct cx231xx *dev, mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice); mdev->driver_version = LINUX_VERSION_CODE; - ret = media_device_register(mdev); - if (ret) { - dev_err(dev->dev, - "Couldn't create a media device. Error: %d\n", - ret); - kfree(mdev); - return; - } + media_device_init(mdev); dev->media_dev = mdev; #endif @@ -1669,8 +1662,8 @@ static int cx231xx_usb_probe(struct usb_interface *interface, /* save our data pointer in this interface device */ usb_set_intfdata(interface, dev); - /* Register the media controller */ - cx231xx_media_device_register(dev, udev); + /* Initialize the media controller */ + cx231xx_media_device_init(dev, udev); /* Create v4l2 device */ #ifdef CONFIG_MEDIA_CONTROLLER @@ -1742,11 +1735,18 @@ static int cx231xx_usb_probe(struct usb_interface *interface, request_modules(dev); retval = cx231xx_create_media_graph(dev); - if (retval < 0) { - cx231xx_release_resources(dev); - } + if (retval < 0) + goto done; + +#ifdef CONFIG_MEDIA_CONTROLLER + retval = media_device_register(dev->media_dev); +#endif +done: + if (retval < 0) + cx231xx_release_resources(dev); return retval; + err_video_alt: /* cx231xx_uninit_dev: */ cx231xx_close_extension(dev); diff --git a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c index 6d3f61f6dc7751..7f52bcbd8b0d64 100644 --- a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c +++ b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c @@ -400,13 +400,12 @@ skip_feed_stop: return ret; } -static void dvb_usbv2_media_device_register(struct dvb_usb_adapter *adap) +static void dvb_usbv2_media_device_init(struct dvb_usb_adapter *adap) { #ifdef CONFIG_MEDIA_CONTROLLER_DVB struct media_device *mdev; struct dvb_usb_device *d = adap_to_d(adap); struct usb_device *udev = d->udev; - int ret; mdev = kzalloc(sizeof(*mdev), GFP_KERNEL); if (!mdev) @@ -420,19 +419,18 @@ static void dvb_usbv2_media_device_register(struct dvb_usb_adapter *adap) mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice); mdev->driver_version = LINUX_VERSION_CODE; - ret = media_device_register(mdev); - if (ret) { - dev_err(&d->udev->dev, - "Couldn't create a media device. Error: %d\n", - ret); - kfree(mdev); - return; - } + media_device_init(mdev); dvb_register_media_controller(&adap->dvb_adap, mdev); dev_info(&d->udev->dev, "media controller created\n"); +#endif +} +static void dvb_usbv2_media_device_register(struct dvb_usb_adapter *adap) +{ +#ifdef CONFIG_MEDIA_CONTROLLER_DVB + media_device_register(adap->dvb_adap.mdev); #endif } @@ -444,6 +442,7 @@ static void dvb_usbv2_media_device_unregister(struct dvb_usb_adapter *adap) return; media_device_unregister(adap->dvb_adap.mdev); + media_device_cleanup(adap->dvb_adap.mdev); kfree(adap->dvb_adap.mdev); adap->dvb_adap.mdev = NULL; @@ -467,7 +466,7 @@ static int dvb_usbv2_adapter_dvb_init(struct dvb_usb_adapter *adap) adap->dvb_adap.priv = adap; - dvb_usbv2_media_device_register(adap); + dvb_usbv2_media_device_init(adap); if (d->props->read_mac_address) { ret = d->props->read_mac_address(adap, @@ -702,6 +701,8 @@ static int dvb_usbv2_adapter_frontend_init(struct dvb_usb_adapter *adap) if (ret < 0) goto err_dvb_unregister_frontend; + dvb_usbv2_media_device_register(adap); + return 0; err_dvb_unregister_frontend: diff --git a/drivers/media/usb/dvb-usb/dvb-usb-dvb.c b/drivers/media/usb/dvb-usb/dvb-usb-dvb.c index b51dbdf03f4227..6a4bb2d8617504 100644 --- a/drivers/media/usb/dvb-usb/dvb-usb-dvb.c +++ b/drivers/media/usb/dvb-usb/dvb-usb-dvb.c @@ -95,13 +95,12 @@ static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed) return dvb_usb_ctrl_feed(dvbdmxfeed, 0); } -static void dvb_usb_media_device_register(struct dvb_usb_adapter *adap) +static void dvb_usb_media_device_init(struct dvb_usb_adapter *adap) { #ifdef CONFIG_MEDIA_CONTROLLER_DVB struct media_device *mdev; struct dvb_usb_device *d = adap->dev; struct usb_device *udev = d->udev; - int ret; mdev = kzalloc(sizeof(*mdev), GFP_KERNEL); if (!mdev) @@ -115,20 +114,21 @@ static void dvb_usb_media_device_register(struct dvb_usb_adapter *adap) mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice); mdev->driver_version = LINUX_VERSION_CODE; - ret = media_device_register(mdev); - if (ret) { - dev_err(&d->udev->dev, - "Couldn't create a media device. Error: %d\n", - ret); - kfree(mdev); - return; - } + media_device_init(mdev); + dvb_register_media_controller(&adap->dvb_adap, mdev); dev_info(&d->udev->dev, "media controller created\n"); #endif } +static void dvb_usb_media_device_register(struct dvb_usb_adapter *adap) +{ +#ifdef CONFIG_MEDIA_CONTROLLER_DVB + media_device_register(adap->dvb_adap.mdev); +#endif +} + static void dvb_usb_media_device_unregister(struct dvb_usb_adapter *adap) { #ifdef CONFIG_MEDIA_CONTROLLER_DVB @@ -136,6 +136,7 @@ static void dvb_usb_media_device_unregister(struct dvb_usb_adapter *adap) return; media_device_unregister(adap->dvb_adap.mdev); + media_device_cleanup(adap->dvb_adap.mdev); kfree(adap->dvb_adap.mdev); adap->dvb_adap.mdev = NULL; #endif @@ -154,7 +155,7 @@ int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums) } adap->dvb_adap.priv = adap; - dvb_usb_media_device_register(adap); + dvb_usb_media_device_init(adap); if (adap->dev->props.read_mac_address) { if (adap->dev->props.read_mac_address(adap->dev, adap->dvb_adap.proposed_mac) == 0) @@ -323,6 +324,8 @@ int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap) ret = dvb_create_media_graph(&adap->dvb_adap); + dvb_usb_media_device_register(adap); + return ret; } diff --git a/drivers/media/usb/siano/smsusb.c b/drivers/media/usb/siano/smsusb.c index c945e4c2fbd49c..8abbd3cc8eba7e 100644 --- a/drivers/media/usb/siano/smsusb.c +++ b/drivers/media/usb/siano/smsusb.c @@ -361,10 +361,11 @@ static void *siano_media_device_register(struct smsusb_device_t *dev, mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice); mdev->driver_version = LINUX_VERSION_CODE; + media_device_init(mdev); + ret = media_device_register(mdev); if (ret) { - pr_err("Couldn't create a media device. Error: %d\n", - ret); + media_device_cleanup(mdev); kfree(mdev); return NULL; } diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c index 39abbafad7966a..4e7148815a7855 100644 --- a/drivers/media/usb/uvc/uvc_driver.c +++ b/drivers/media/usb/uvc/uvc_driver.c @@ -1656,6 +1656,7 @@ static void uvc_delete(struct uvc_device *dev) #ifdef CONFIG_MEDIA_CONTROLLER if (media_devnode_is_registered(&dev->mdev.devnode)) media_device_unregister(&dev->mdev); + media_device_cleanup(&dev->mdev); #endif list_for_each_safe(p, n, &dev->chains) { @@ -1906,7 +1907,7 @@ static int uvc_probe(struct usb_interface *intf, "linux-uvc-devel mailing list.\n"); } - /* Register the media and V4L2 devices. */ + /* Initialize the media device and register the V4L2 device. */ #ifdef CONFIG_MEDIA_CONTROLLER dev->mdev.dev = &intf->dev; strlcpy(dev->mdev.model, dev->name, sizeof(dev->mdev.model)); @@ -1916,8 +1917,7 @@ static int uvc_probe(struct usb_interface *intf, strcpy(dev->mdev.bus_info, udev->devpath); dev->mdev.hw_revision = le16_to_cpu(udev->descriptor.bcdDevice); dev->mdev.driver_version = LINUX_VERSION_CODE; - if (media_device_register(&dev->mdev) < 0) - goto error; + media_device_init(&dev->mdev); dev->vdev.mdev = &dev->mdev; #endif @@ -1936,6 +1936,11 @@ static int uvc_probe(struct usb_interface *intf, if (uvc_register_chains(dev) < 0) goto error; +#ifdef CONFIG_MEDIA_CONTROLLER + /* Register the media device node */ + if (media_device_register(&dev->mdev) < 0) + goto error; +#endif /* Save our data pointer in the interface data. */ usb_set_intfdata(intf, dev); diff --git a/include/media/media-device.h b/include/media/media-device.h index ebc2f3a239eb09..e01bbc427fcd92 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -337,6 +337,32 @@ struct media_device { /* media_devnode to media_device */ #define to_media_device(node) container_of(node, struct media_device, devnode) +/** + * media_device_init() - Initializes a media device element + * + * @mdev: pointer to struct &media_device + * + * This function initializes the media device prior to its registration. + * The media device initialization and registration is split in two functions + * to avoid race conditions and make the media device available to user-space + * before the media graph has been completed. + * + * So drivers need to first initialize the media device, register any entity + * within the media device, create pad to pad links and then finally register + * the media device by calling media_device_register() as a final step. + */ +void media_device_init(struct media_device *mdev); + +/** + * media_device_cleanup() - Cleanups a media device element + * + * @mdev: pointer to struct &media_device + * + * This function that will destroy the graph_mutex that is + * initialized in media_device_init(). + */ +void media_device_cleanup(struct media_device *mdev); + /** * __media_device_register() - Registers a media device element * -- cgit 1.2.3-korg From 9f80679511b0544d1ed8c9bc2d80030183e9f1ed Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 28 Dec 2015 09:55:49 -0200 Subject: [media] usb: check media device errors There are now two new warnings: drivers/media/usb/dvb-usb-v2/dvb_usb_core.c: In function 'dvb_usbv2_media_device_register': drivers/media/usb/dvb-usb-v2/dvb_usb_core.c:433:2: warning: ignoring return value of '__media_device_register', declared with attribute warn_unused_result [-Wunused-result] media_device_register(adap->dvb_adap.mdev); ^ drivers/media/usb/dvb-usb/dvb-usb-dvb.c: In function 'dvb_usb_media_device_register': drivers/media/usb/dvb-usb/dvb-usb-dvb.c:128:2: warning: ignoring return value of '__media_device_register', declared with attribute warn_unused_result [-Wunused-result] media_device_register(adap->dvb_adap.mdev); ^ Those are because the drivers are not properly checking if the media device init and register were succeeded. Fix it. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/au0828/au0828-core.c | 16 ++++++++++++---- drivers/media/usb/cx231xx/cx231xx-cards.c | 13 ++++++++++--- drivers/media/usb/dvb-usb-v2/dvb_usb_core.c | 23 ++++++++++++++++------- drivers/media/usb/dvb-usb/dvb-usb-dvb.c | 22 ++++++++++++++++------ 4 files changed, 54 insertions(+), 20 deletions(-) diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c index fbdaeb206565b2..9e29e70a78d7b2 100644 --- a/drivers/media/usb/au0828/au0828-core.c +++ b/drivers/media/usb/au0828/au0828-core.c @@ -217,15 +217,15 @@ static void au0828_usb_disconnect(struct usb_interface *interface) au0828_usb_release(dev); } -static void au0828_media_device_init(struct au0828_dev *dev, - struct usb_device *udev) +static int au0828_media_device_init(struct au0828_dev *dev, + struct usb_device *udev) { #ifdef CONFIG_MEDIA_CONTROLLER struct media_device *mdev; mdev = kzalloc(sizeof(*mdev), GFP_KERNEL); if (!mdev) - return; + return -ENOMEM; mdev->dev = &udev->dev; @@ -243,6 +243,7 @@ static void au0828_media_device_init(struct au0828_dev *dev, dev->media_dev = mdev; #endif + return 0; } @@ -368,7 +369,14 @@ static int au0828_usb_probe(struct usb_interface *interface, dev->board = au0828_boards[dev->boardnr]; /* Initialize the media controller */ - au0828_media_device_init(dev, usbdev); + retval = au0828_media_device_init(dev, usbdev); + if (retval) { + pr_err("%s() au0828_media_device_init failed\n", + __func__); + mutex_unlock(&dev->lock); + kfree(dev); + return retval; + } #ifdef CONFIG_VIDEO_AU0828_V4L2 dev->v4l2_dev.release = au0828_usb_v4l2_release; diff --git a/drivers/media/usb/cx231xx/cx231xx-cards.c b/drivers/media/usb/cx231xx/cx231xx-cards.c index de0026b5265cff..620b83d03f75a1 100644 --- a/drivers/media/usb/cx231xx/cx231xx-cards.c +++ b/drivers/media/usb/cx231xx/cx231xx-cards.c @@ -1206,7 +1206,7 @@ void cx231xx_release_resources(struct cx231xx *dev) clear_bit(dev->devno, &cx231xx_devused); } -static void cx231xx_media_device_init(struct cx231xx *dev, +static int cx231xx_media_device_init(struct cx231xx *dev, struct usb_device *udev) { #ifdef CONFIG_MEDIA_CONTROLLER @@ -1214,7 +1214,7 @@ static void cx231xx_media_device_init(struct cx231xx *dev, mdev = kzalloc(sizeof(*mdev), GFP_KERNEL); if (!mdev) - return; + return -ENOMEM; mdev->dev = dev->dev; strlcpy(mdev->model, dev->board.name, sizeof(mdev->model)); @@ -1228,6 +1228,7 @@ static void cx231xx_media_device_init(struct cx231xx *dev, dev->media_dev = mdev; #endif + return 0; } static int cx231xx_create_media_graph(struct cx231xx *dev) @@ -1663,7 +1664,11 @@ static int cx231xx_usb_probe(struct usb_interface *interface, usb_set_intfdata(interface, dev); /* Initialize the media controller */ - cx231xx_media_device_init(dev, udev); + retval = cx231xx_media_device_init(dev, udev); + if (retval) { + dev_err(d, "cx231xx_media_device_init failed\n"); + goto err_media_init; + } /* Create v4l2 device */ #ifdef CONFIG_MEDIA_CONTROLLER @@ -1758,6 +1763,8 @@ err_video_alt: err_init: v4l2_device_unregister(&dev->v4l2_dev); err_v4l2: + cx231xx_unregister_media_device(dev); +err_media_init: usb_set_intfdata(interface, NULL); err_if: usb_put_dev(udev); diff --git a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c index 7f52bcbd8b0d64..0fa2c45917b029 100644 --- a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c +++ b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c @@ -400,7 +400,7 @@ skip_feed_stop: return ret; } -static void dvb_usbv2_media_device_init(struct dvb_usb_adapter *adap) +static int dvb_usbv2_media_device_init(struct dvb_usb_adapter *adap) { #ifdef CONFIG_MEDIA_CONTROLLER_DVB struct media_device *mdev; @@ -409,7 +409,7 @@ static void dvb_usbv2_media_device_init(struct dvb_usb_adapter *adap) mdev = kzalloc(sizeof(*mdev), GFP_KERNEL); if (!mdev) - return; + return -ENOMEM; mdev->dev = &udev->dev; strlcpy(mdev->model, d->name, sizeof(mdev->model)); @@ -425,12 +425,15 @@ static void dvb_usbv2_media_device_init(struct dvb_usb_adapter *adap) dev_info(&d->udev->dev, "media controller created\n"); #endif + return 0; } -static void dvb_usbv2_media_device_register(struct dvb_usb_adapter *adap) +static int dvb_usbv2_media_device_register(struct dvb_usb_adapter *adap) { #ifdef CONFIG_MEDIA_CONTROLLER_DVB - media_device_register(adap->dvb_adap.mdev); + return media_device_register(adap->dvb_adap.mdev); +#else + return 0; #endif } @@ -466,7 +469,12 @@ static int dvb_usbv2_adapter_dvb_init(struct dvb_usb_adapter *adap) adap->dvb_adap.priv = adap; - dvb_usbv2_media_device_init(adap); + ret = dvb_usbv2_media_device_init(adap); + if (ret < 0) { + dev_dbg(&d->udev->dev, "%s: dvb_usbv2_media_device_init() failed=%d\n", + __func__, ret); + goto err_dvb_register_mc; + } if (d->props->read_mac_address) { ret = d->props->read_mac_address(adap, @@ -517,6 +525,7 @@ err_dvb_dmxdev_init: dvb_dmx_release(&adap->demux); err_dvb_dmx_init: dvb_usbv2_media_device_unregister(adap); +err_dvb_register_mc: dvb_unregister_adapter(&adap->dvb_adap); err_dvb_register_adapter: adap->dvb_adap.priv = NULL; @@ -701,9 +710,9 @@ static int dvb_usbv2_adapter_frontend_init(struct dvb_usb_adapter *adap) if (ret < 0) goto err_dvb_unregister_frontend; - dvb_usbv2_media_device_register(adap); + ret = dvb_usbv2_media_device_register(adap); - return 0; + return ret; err_dvb_unregister_frontend: for (i = count_registered - 1; i >= 0; i--) diff --git a/drivers/media/usb/dvb-usb/dvb-usb-dvb.c b/drivers/media/usb/dvb-usb/dvb-usb-dvb.c index 6a4bb2d8617504..241463ef631e00 100644 --- a/drivers/media/usb/dvb-usb/dvb-usb-dvb.c +++ b/drivers/media/usb/dvb-usb/dvb-usb-dvb.c @@ -95,7 +95,7 @@ static int dvb_usb_stop_feed(struct dvb_demux_feed *dvbdmxfeed) return dvb_usb_ctrl_feed(dvbdmxfeed, 0); } -static void dvb_usb_media_device_init(struct dvb_usb_adapter *adap) +static int dvb_usb_media_device_init(struct dvb_usb_adapter *adap) { #ifdef CONFIG_MEDIA_CONTROLLER_DVB struct media_device *mdev; @@ -104,7 +104,7 @@ static void dvb_usb_media_device_init(struct dvb_usb_adapter *adap) mdev = kzalloc(sizeof(*mdev), GFP_KERNEL); if (!mdev) - return; + return -ENOMEM; mdev->dev = &udev->dev; strlcpy(mdev->model, d->desc->name, sizeof(mdev->model)); @@ -120,12 +120,15 @@ static void dvb_usb_media_device_init(struct dvb_usb_adapter *adap) dev_info(&d->udev->dev, "media controller created\n"); #endif + return 0; } -static void dvb_usb_media_device_register(struct dvb_usb_adapter *adap) +static int dvb_usb_media_device_register(struct dvb_usb_adapter *adap) { #ifdef CONFIG_MEDIA_CONTROLLER_DVB - media_device_register(adap->dvb_adap.mdev); + return media_device_register(adap->dvb_adap.mdev); +#else + return 0; #endif } @@ -155,7 +158,11 @@ int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums) } adap->dvb_adap.priv = adap; - dvb_usb_media_device_init(adap); + ret = dvb_usb_media_device_init(adap); + if (ret < 0) { + deb_info("dvb_usb_media_device_init failed: error %d", ret); + goto err_mc; + } if (adap->dev->props.read_mac_address) { if (adap->dev->props.read_mac_address(adap->dev, adap->dvb_adap.proposed_mac) == 0) @@ -205,6 +212,7 @@ err_dmx_dev: dvb_dmx_release(&adap->demux); err_dmx: dvb_usb_media_device_unregister(adap); +err_mc: dvb_unregister_adapter(&adap->dvb_adap); err: return ret; @@ -323,8 +331,10 @@ int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap) return ret; ret = dvb_create_media_graph(&adap->dvb_adap); + if (ret) + return ret; - dvb_usb_media_device_register(adap); + ret = dvb_usb_media_device_register(adap); return ret; } -- cgit 1.2.3-korg From bdf5c198261cdda8dcc5375315afe9d8bf4d77d1 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Mon, 28 Dec 2015 01:45:00 +0200 Subject: [media] v4l2-device: Register entity before calling subdev's registered ops Registering a V4L2 sub-device includes, among other things, registering the related media entity and calling the sub-device's registered op. Since patch "media: convert links from array to list", creating a link between two pads requires registering the entity first. If the registered() op involves link creation, the link list head will not be initialised before it is used. Resolve this by first registering the entity, then calling its registered() op. Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/v4l2-core/v4l2-device.c | 21 +++++++++++---------- 1 file changed, 11 insertions(+), 10 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-device.c b/drivers/media/v4l2-core/v4l2-device.c index 85f724b53a148b..2aa72aba4f172a 100644 --- a/drivers/media/v4l2-core/v4l2-device.c +++ b/drivers/media/v4l2-core/v4l2-device.c @@ -180,26 +180,26 @@ int v4l2_device_register_subdev(struct v4l2_device *v4l2_dev, return -ENODEV; sd->v4l2_dev = v4l2_dev; - if (sd->internal_ops && sd->internal_ops->registered) { - err = sd->internal_ops->registered(sd); - if (err) - goto error_module; - } - /* This just returns 0 if either of the two args is NULL */ err = v4l2_ctrl_add_handler(v4l2_dev->ctrl_handler, sd->ctrl_handler, NULL); if (err) - goto error_unregister; + goto error_module; #if defined(CONFIG_MEDIA_CONTROLLER) /* Register the entity. */ if (v4l2_dev->mdev) { err = media_device_register_entity(v4l2_dev->mdev, entity); if (err < 0) - goto error_unregister; + goto error_module; } #endif + if (sd->internal_ops && sd->internal_ops->registered) { + err = sd->internal_ops->registered(sd); + if (err) + goto error_unregister; + } + spin_lock(&v4l2_dev->lock); list_add_tail(&sd->list, &v4l2_dev->subdevs); spin_unlock(&v4l2_dev->lock); @@ -207,8 +207,9 @@ int v4l2_device_register_subdev(struct v4l2_device *v4l2_dev, return 0; error_unregister: - if (sd->internal_ops && sd->internal_ops->unregistered) - sd->internal_ops->unregistered(sd); +#if defined(CONFIG_MEDIA_CONTROLLER) + media_device_unregister_entity(entity); +#endif error_module: if (!sd->owner_v4l2_dev) module_put(sd->owner); -- cgit 1.2.3-korg From 8a95079668bf35b265d3bb6381b8badb5bfa826a Mon Sep 17 00:00:00 2001 From: Javier Martinez Canillas Date: Fri, 11 Dec 2015 20:57:09 -0200 Subject: [media] media-device: set topology version 0 at media registration The G_TOPOLOGY ioctl is used to get a graph topology and since in the future a graph can be dynamically updated, there is a way to know the topology version so userspace can be aware that the graph has changed. The version 0 is reserved to indicate that the graph is static (i.e no graphs updates since the media device was registered). So, now that the media device initialization and registration has been split and the media device node is not exposed to user-space until all the entities have been registered and links created, it is safe to set a topology version 0 in media_device_register(). Suggested-by: Laurent Pinchart Suggested-by: Mauro Carvalho Chehab Signed-off-by: Javier Martinez Canillas Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index b718c783debd68..b3e19c22e69909 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -665,6 +665,10 @@ int __must_check __media_device_register(struct media_device *mdev, mdev->devnode.fops = &media_device_fops; mdev->devnode.parent = mdev->dev; mdev->devnode.release = media_device_release; + + /* Set version 0 to indicate user-space that the graph is static */ + mdev->topology_version = 0; + ret = media_devnode_register(&mdev->devnode, owner); if (ret < 0) return ret; -- cgit 1.2.3-korg From a5c82e5622d1b7f479c9a43873c2c5ac1f67765c Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 15 Dec 2015 09:00:40 -0200 Subject: [media] media-device: copy_to/from_user() returns positive The copy_to/from_user() functions return the number of bytes *not* copied. They don't return error codes. Fixes: 4f6b3f363475 ('media] media-device: add support for MEDIA_IOC_G_TOPOLOGY ioctl') Signed-off-by: Dan Carpenter Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index b3e19c22e69909..30e3354d748148 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -376,18 +376,17 @@ static long media_device_get_topology(struct media_device *mdev, struct media_v2_topology ktopo; int ret; - ret = copy_from_user(&ktopo, utopo, sizeof(ktopo)); - - if (ret < 0) - return ret; + if (copy_from_user(&ktopo, utopo, sizeof(ktopo))) + return -EFAULT; ret = __media_device_get_topology(mdev, &ktopo); if (ret < 0) return ret; - ret = copy_to_user(utopo, &ktopo, sizeof(*utopo)); + if (copy_to_user(utopo, &ktopo, sizeof(*utopo))) + return -EFAULT; - return ret; + return 0; } static long media_device_ioctl(struct file *filp, unsigned int cmd, -- cgit 1.2.3-korg From 1630b832355399dd0dc4fcc2cadbcad47153a748 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Tue, 15 Dec 2015 09:04:14 -0200 Subject: [media] v4l2-device: fix a missing error code We need to set "err = -ENOMEM" here. Fixes: 38b11f19667a ('[media] v4l2-core: create MC interfaces for devnodes') Signed-off-by: Dan Carpenter Signed-off-by: Mauro Carvalho Chehab --- drivers/media/v4l2-core/v4l2-device.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/media/v4l2-core/v4l2-device.c b/drivers/media/v4l2-core/v4l2-device.c index 2aa72aba4f172a..06fa5f1b2cfffa 100644 --- a/drivers/media/v4l2-core/v4l2-device.c +++ b/drivers/media/v4l2-core/v4l2-device.c @@ -267,8 +267,10 @@ int v4l2_device_register_subdev_nodes(struct v4l2_device *v4l2_dev) link = media_create_intf_link(&sd->entity, &vdev->intf_devnode->intf, MEDIA_LNK_FL_ENABLED); - if (!link) + if (!link) { + err = -ENOMEM; goto clean_up; + } } #endif sd->devnode = vdev; -- cgit 1.2.3-korg From 665faa971d087e8b968ef75d04079a7a462ddfca Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 11:32:17 -0200 Subject: [media] media: Introduce internal index for media entities The internal index can be used internally by the framework in order to keep track of entities for a purpose or another. The internal index is constant while it's registered to a media device, but the same index may be re-used once the entity having that index is unregistered. Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 17 +++++++++++++++++ include/media/media-device.h | 4 ++++ include/media/media-entity.h | 3 +++ 3 files changed, 24 insertions(+) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 30e3354d748148..ce97f8f196f3b8 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -22,6 +22,7 @@ #include #include +#include #include #include #include @@ -551,6 +552,17 @@ int __must_check media_device_register_entity(struct media_device *mdev, entity->num_backlinks = 0; spin_lock(&mdev->lock); + + entity->internal_idx = ida_simple_get(&mdev->entity_internal_idx, 1, 0, + GFP_KERNEL); + if (entity->internal_idx < 0) { + spin_unlock(&mdev->lock); + return entity->internal_idx; + } + + mdev->entity_internal_idx_max = + max(mdev->entity_internal_idx_max, entity->internal_idx); + /* Initialize media_gobj embedded at the entity */ media_gobj_create(mdev, MEDIA_GRAPH_ENTITY, &entity->graph_obj); @@ -579,6 +591,8 @@ static void __media_device_unregister_entity(struct media_entity *entity) struct media_interface *intf; unsigned int i; + ida_simple_remove(&mdev->entity_internal_idx, entity->internal_idx); + /* Remove all interface links pointing to this entity */ list_for_each_entry(intf, &mdev->interfaces, graph_obj.list) { list_for_each_entry_safe(link, tmp, &intf->links, list) { @@ -632,6 +646,7 @@ void media_device_init(struct media_device *mdev) INIT_LIST_HEAD(&mdev->links); spin_lock_init(&mdev->lock); mutex_init(&mdev->graph_mutex); + ida_init(&mdev->entity_internal_idx); dev_dbg(mdev->dev, "Media device initialized\n"); } @@ -644,6 +659,8 @@ EXPORT_SYMBOL_GPL(media_device_init); */ void media_device_cleanup(struct media_device *mdev) { + ida_destroy(&mdev->entity_internal_idx); + mdev->entity_internal_idx_max = 0; mutex_destroy(&mdev->graph_mutex); } EXPORT_SYMBOL_GPL(media_device_cleanup); diff --git a/include/media/media-device.h b/include/media/media-device.h index e01bbc427fcd92..2ab4e68038429e 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -261,6 +261,7 @@ * in the end provide a way to use driver-specific callbacks. */ +struct ida; struct device; /** @@ -278,6 +279,7 @@ struct device; * @pad_id: Unique ID used on the last pad registered * @link_id: Unique ID used on the last link registered * @intf_devnode_id: Unique ID used on the last interface devnode registered + * @entity_internal_idx: Allocated internal entity indices * @entities: List of registered entities * @interfaces: List of registered interfaces * @pads: List of registered pads @@ -313,6 +315,8 @@ struct media_device { u32 pad_id; u32 link_id; u32 intf_devnode_id; + struct ida entity_internal_idx; + int entity_internal_idx_max; struct list_head entities; struct list_head interfaces; diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 81aca1f5a09afc..30e8f9fd3efab8 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -157,6 +157,8 @@ struct media_entity_operations { * @num_pads: Number of sink and source pads. * @num_links: Total number of links, forward and back, enabled and disabled. * @num_backlinks: Number of backlinks + * @internal_idx: An unique internal entity specific number. The numbers are + * re-used if entities are unregistered or registered again. * @pads: Pads array with the size defined by @num_pads. * @links: List of data links. * @ops: Entity operations. @@ -183,6 +185,7 @@ struct media_entity { u16 num_pads; u16 num_links; u16 num_backlinks; + int internal_idx; struct media_pad *pads; struct list_head links; -- cgit 1.2.3-korg From c8d54cd53b43c514fbd8d36abf0f2f00f719dd54 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 11:44:32 -0200 Subject: [media] media: Add an API to manage entity enumerations This is useful in e.g. knowing whether certain operations have already been performed for an entity. The users include the framework itself (for graph walking) and a number of drivers. Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 40 ++++++++++++ include/media/media-device.h | 15 +++++ include/media/media-entity.h | 141 ++++++++++++++++++++++++++++++++++++++++--- 3 files changed, 188 insertions(+), 8 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 13c8ca11f169ef..5e3f32f631876f 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -70,6 +70,46 @@ static inline const char *intf_type(struct media_interface *intf) } }; +/** + * __media_entity_enum_init - Initialise an entity enumeration + * + * @ent_enum: Entity enumeration to be initialised + * @idx_max: Maximum number of entities in the enumeration + * + * Returns zero on success or a negative error code. + */ +__must_check int __media_entity_enum_init(struct media_entity_enum *ent_enum, + int idx_max) +{ + if (idx_max > MEDIA_ENTITY_ENUM_MAX_ID) { + ent_enum->bmap = kcalloc(DIV_ROUND_UP(idx_max, BITS_PER_LONG), + sizeof(long), GFP_KERNEL); + if (!ent_enum->bmap) + return -ENOMEM; + } else { + ent_enum->bmap = ent_enum->prealloc_bmap; + } + + bitmap_zero(ent_enum->bmap, idx_max); + ent_enum->idx_max = idx_max; + + return 0; +} +EXPORT_SYMBOL_GPL(__media_entity_enum_init); + +/** + * media_entity_enum_cleanup - Release resources of an entity enumeration + * + * @e: Entity enumeration to be released + */ +void media_entity_enum_cleanup(struct media_entity_enum *ent_enum) +{ + if (ent_enum->bmap != ent_enum->prealloc_bmap) + kfree(ent_enum->bmap); + ent_enum->bmap = NULL; +} +EXPORT_SYMBOL_GPL(media_entity_enum_cleanup); + /** * dev_dbg_obj - Prints in debug mode a change on some object * diff --git a/include/media/media-device.h b/include/media/media-device.h index 2ab4e68038429e..da4e12ca259c1b 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -341,6 +341,21 @@ struct media_device { /* media_devnode to media_device */ #define to_media_device(node) container_of(node, struct media_device, devnode) +/** + * media_entity_enum_init - Initialise an entity enumeration + * + * @e: Entity enumeration to be initialised + * @mdev: The related media device + * + * Returns zero on success or a negative error code. + */ +static inline __must_check int media_entity_enum_init( + struct media_entity_enum *ent_enum, struct media_device *mdev) +{ + return __media_entity_enum_init(ent_enum, + mdev->entity_internal_idx_max + 1); +} + /** * media_device_init() - Initializes a media device element * diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 30e8f9fd3efab8..c593dbd3e030da 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -23,7 +23,7 @@ #ifndef _MEDIA_ENTITY_H #define _MEDIA_ENTITY_H -#include +#include #include #include #include @@ -71,6 +71,32 @@ struct media_gobj { struct list_head list; }; +#define MEDIA_ENTITY_ENUM_MAX_DEPTH 16 +#define MEDIA_ENTITY_ENUM_MAX_ID 64 + +/* + * The number of pads can't be bigger than the number of entities, + * as the worse-case scenario is to have one entity linked up to + * MEDIA_ENTITY_ENUM_MAX_ID - 1 entities. + */ +#define MEDIA_ENTITY_MAX_PADS (MEDIA_ENTITY_ENUM_MAX_ID - 1) + +/** + * struct media_entity_enum - An enumeration of media entities. + * + * @prealloc_bmap: Pre-allocated space reserved for media entities if the + * total number of entities does not exceed + * MEDIA_ENTITY_ENUM_MAX_ID. + * @bmap: Bit map in which each bit represents one entity at struct + * media_entity->internal_idx. + * @idx_max: Number of bits in bmap + */ +struct media_entity_enum { + DECLARE_BITMAP(prealloc_bmap, MEDIA_ENTITY_ENUM_MAX_ID); + unsigned long *bmap; + int idx_max; +}; + struct media_pipeline { }; @@ -329,15 +355,114 @@ static inline bool is_media_entity_v4l2_subdev(struct media_entity *entity) } } -#define MEDIA_ENTITY_ENUM_MAX_DEPTH 16 -#define MEDIA_ENTITY_ENUM_MAX_ID 64 +__must_check int __media_entity_enum_init(struct media_entity_enum *ent_enum, + int idx_max); +void media_entity_enum_cleanup(struct media_entity_enum *e); -/* - * The number of pads can't be bigger than the number of entities, - * as the worse-case scenario is to have one entity linked up to - * MEDIA_ENTITY_ENUM_MAX_ID - 1 entities. +/** + * media_entity_enum_zero - Clear the entire enum + * + * @e: Entity enumeration to be cleared */ -#define MEDIA_ENTITY_MAX_PADS (MEDIA_ENTITY_ENUM_MAX_ID - 1) +static inline void media_entity_enum_zero(struct media_entity_enum *ent_enum) +{ + bitmap_zero(ent_enum->bmap, ent_enum->idx_max); +} + +/** + * media_entity_enum_set - Mark a single entity in the enum + * + * @e: Entity enumeration + * @entity: Entity to be marked + */ +static inline void media_entity_enum_set(struct media_entity_enum *ent_enum, + struct media_entity *entity) +{ + if (WARN_ON(entity->internal_idx >= ent_enum->idx_max)) + return; + + __set_bit(entity->internal_idx, ent_enum->bmap); +} + +/** + * media_entity_enum_clear - Unmark a single entity in the enum + * + * @e: Entity enumeration + * @entity: Entity to be unmarked + */ +static inline void media_entity_enum_clear(struct media_entity_enum *ent_enum, + struct media_entity *entity) +{ + if (WARN_ON(entity->internal_idx >= ent_enum->idx_max)) + return; + + __clear_bit(entity->internal_idx, ent_enum->bmap); +} + +/** + * media_entity_enum_test - Test whether the entity is marked + * + * @e: Entity enumeration + * @entity: Entity to be tested + * + * Returns true if the entity was marked. + */ +static inline bool media_entity_enum_test(struct media_entity_enum *ent_enum, + struct media_entity *entity) +{ + if (WARN_ON(entity->internal_idx >= ent_enum->idx_max)) + return true; + + return test_bit(entity->internal_idx, ent_enum->bmap); +} + +/** + * media_entity_enum_test - Test whether the entity is marked, and mark it + * + * @e: Entity enumeration + * @entity: Entity to be tested + * + * Returns true if the entity was marked, and mark it before doing so. + */ +static inline bool media_entity_enum_test_and_set( + struct media_entity_enum *ent_enum, struct media_entity *entity) +{ + if (WARN_ON(entity->internal_idx >= ent_enum->idx_max)) + return true; + + return __test_and_set_bit(entity->internal_idx, ent_enum->bmap); +} + +/** + * media_entity_enum_test - Test whether the entire enum is empty + * + * @e: Entity enumeration + * @entity: Entity to be tested + * + * Returns true if the entity was marked. + */ +static inline bool media_entity_enum_empty(struct media_entity_enum *ent_enum) +{ + return bitmap_empty(ent_enum->bmap, ent_enum->idx_max); +} + +/** + * media_entity_enum_intersects - Test whether two enums intersect + * + * @e: First entity enumeration + * @f: Second entity enumeration + * + * Returns true if entity enumerations e and f intersect, otherwise false. + */ +static inline bool media_entity_enum_intersects( + struct media_entity_enum *ent_enum1, + struct media_entity_enum *ent_enum2) +{ + WARN_ON(ent_enum1->idx_max != ent_enum2->idx_max); + + return bitmap_intersects(ent_enum1->bmap, ent_enum2->bmap, + min(ent_enum1->idx_max, ent_enum2->idx_max)); +} struct media_entity_graph { struct { -- cgit 1.2.3-korg From 82c682905dbc9785f26711e34cb4d16ba3a798d7 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 11:32:19 -0200 Subject: [media] media: Move struct media_entity_graph definition up It will be needed in struct media_pipeline shortly. Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- include/media/media-entity.h | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/include/media/media-entity.h b/include/media/media-entity.h index c593dbd3e030da..e8ef40c809adcc 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -97,6 +97,16 @@ struct media_entity_enum { int idx_max; }; +struct media_entity_graph { + struct { + struct media_entity *entity; + struct list_head *link; + } stack[MEDIA_ENTITY_ENUM_MAX_DEPTH]; + + DECLARE_BITMAP(entities, MEDIA_ENTITY_ENUM_MAX_ID); + int top; +}; + struct media_pipeline { }; @@ -464,16 +474,6 @@ static inline bool media_entity_enum_intersects( min(ent_enum1->idx_max, ent_enum2->idx_max)); } -struct media_entity_graph { - struct { - struct media_entity *entity; - struct list_head *link; - } stack[MEDIA_ENTITY_ENUM_MAX_DEPTH]; - - DECLARE_BITMAP(entities, MEDIA_ENTITY_ENUM_MAX_ID); - int top; -}; - #define gobj_to_entity(gobj) \ container_of(gobj, struct media_entity, graph_obj) -- cgit 1.2.3-korg From 434257f19ce0a6b635a84882257034ae79d2f274 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 11:32:20 -0200 Subject: [media] media: Add KernelDoc documentation for struct media_entity_graph KernelDoc doesn't appear to handle anonymous structs defined inside another gracefully. As the struct is internal to the framework graph walk algorithm, detailed documentation isn't seen very important. Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- include/media/media-entity.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/media/media-entity.h b/include/media/media-entity.h index e8ef40c809adcc..edfb6163caa351 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -97,6 +97,15 @@ struct media_entity_enum { int idx_max; }; +/** + * struct media_entity_graph - Media graph traversal state + * + * @stack: Graph traversal stack; the stack contains information + * on the path the media entities to be walked and the + * links through which they were reached. + * @entities: Visited entities + * @top: The top of the stack + */ struct media_entity_graph { struct { struct media_entity *entity; -- cgit 1.2.3-korg From 5dd8775dc6b480f67be11108d7cd798fba724cab Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 11:32:21 -0200 Subject: [media] media: Move media graph state for streamon/off to the pipeline The struct media_entity_graph was allocated in the stack, limiting the number of entities that could be reasonably allocated. Instead, move the struct to struct media_pipeline which is typically allocated using kmalloc() instead. The intent is to keep the enumeration around for later use for the duration of the streaming. As streaming is eventually stopped, an unfortunate memory allocation failure would prevent stopping the streaming. As no memory will need to be allocated, the problem is avoided altogether. Signed-off-by: Sakari Ailus Reviewed-by: Mauro Carvalho Chehab Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 16 ++++++++-------- include/media/media-entity.h | 6 ++++++ 2 files changed, 14 insertions(+), 8 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 5e3f32f631876f..83cfde6dcb1ca1 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -349,16 +349,16 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity, struct media_pipeline *pipe) { struct media_device *mdev = entity->graph_obj.mdev; - struct media_entity_graph graph; + struct media_entity_graph *graph = &pipe->graph; struct media_entity *entity_err = entity; struct media_link *link; int ret; mutex_lock(&mdev->graph_mutex); - media_entity_graph_walk_start(&graph, entity); + media_entity_graph_walk_start(graph, entity); - while ((entity = media_entity_graph_walk_next(&graph))) { + while ((entity = media_entity_graph_walk_next(graph))) { DECLARE_BITMAP(active, MEDIA_ENTITY_MAX_PADS); DECLARE_BITMAP(has_no_links, MEDIA_ENTITY_MAX_PADS); @@ -439,9 +439,9 @@ error: * Link validation on graph failed. We revert what we did and * return the error. */ - media_entity_graph_walk_start(&graph, entity_err); + media_entity_graph_walk_start(graph, entity_err); - while ((entity_err = media_entity_graph_walk_next(&graph))) { + while ((entity_err = media_entity_graph_walk_next(graph))) { entity_err->stream_count--; if (entity_err->stream_count == 0) entity_err->pipe = NULL; @@ -463,13 +463,13 @@ EXPORT_SYMBOL_GPL(media_entity_pipeline_start); void media_entity_pipeline_stop(struct media_entity *entity) { struct media_device *mdev = entity->graph_obj.mdev; - struct media_entity_graph graph; + struct media_entity_graph *graph = &entity->pipe->graph; mutex_lock(&mdev->graph_mutex); - media_entity_graph_walk_start(&graph, entity); + media_entity_graph_walk_start(graph, entity); - while ((entity = media_entity_graph_walk_next(&graph))) { + while ((entity = media_entity_graph_walk_next(graph))) { entity->stream_count--; if (entity->stream_count == 0) entity->pipe = NULL; diff --git a/include/media/media-entity.h b/include/media/media-entity.h index edfb6163caa351..4dc3bef72c9dbc 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -116,7 +116,13 @@ struct media_entity_graph { int top; }; +/* + * struct media_pipeline - Media pipeline related information + * + * @graph: Media graph walk during pipeline start / stop + */ struct media_pipeline { + struct media_entity_graph graph; }; /** -- cgit 1.2.3-korg From e03d220336dd69292370393f5eee98ac17eda308 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 11:32:22 -0200 Subject: [media] media: Amend media graph walk API by init and cleanup functions Add media_entity_graph_walk_init() and media_entity_graph_walk_cleanup() functions in order to dynamically allocate memory for the graph. This is not done in media_entity_graph_walk_start() as there are situations where e.g. correct error handling, that itself may not fail, requires successful graph walk. Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 27 +++++++++++++++++++++++++++ include/media/media-entity.h | 17 ++++++++++++----- 2 files changed, 39 insertions(+), 5 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 83cfde6dcb1ca1..9bf96c71374ee5 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -282,6 +282,33 @@ static struct media_entity *stack_pop(struct media_entity_graph *graph) #define link_top(en) ((en)->stack[(en)->top].link) #define stack_top(en) ((en)->stack[(en)->top].entity) +/** + * media_entity_graph_walk_init - Allocate resources for graph walk + * @graph: Media graph structure that will be used to walk the graph + * @mdev: Media device + * + * Reserve resources for graph walk in media device's current + * state. The memory must be released using + * media_entity_graph_walk_free(). + * + * Returns error on failure, zero on success. + */ +__must_check int media_entity_graph_walk_init( + struct media_entity_graph *graph, struct media_device *mdev) +{ + return 0; +} +EXPORT_SYMBOL_GPL(media_entity_graph_walk_init); + +/** + * media_entity_graph_walk_cleanup - Release resources related to graph walking + * @graph: Media graph structure that was used to walk the graph + */ +void media_entity_graph_walk_cleanup(struct media_entity_graph *graph) +{ +} +EXPORT_SYMBOL_GPL(media_entity_graph_walk_cleanup); + void media_entity_graph_walk_start(struct media_entity_graph *graph, struct media_entity *entity) { diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 4dc3bef72c9dbc..7f028ea8491184 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -699,6 +699,10 @@ struct media_pad *media_entity_remote_pad(struct media_pad *pad); */ struct media_entity *media_entity_get(struct media_entity *entity); +__must_check int media_entity_graph_walk_init( + struct media_entity_graph *graph, struct media_device *mdev); +void media_entity_graph_walk_cleanup(struct media_entity_graph *graph); + /** * media_entity_put - Release the reference to the parent module * @@ -715,13 +719,16 @@ void media_entity_put(struct media_entity *entity); * @graph: Media graph structure that will be used to walk the graph * @entity: Starting entity * - * This function initializes the graph traversal structure to walk the entities - * graph starting at the given entity. The traversal structure must not be - * modified by the caller during graph traversal. When done the structure can - * safely be freed. + * Before using this function, media_entity_graph_walk_init() must be + * used to allocate resources used for walking the graph. This + * function initializes the graph traversal structure to walk the + * entities graph starting at the given entity. The traversal + * structure must not be modified by the caller during graph + * traversal. After the graph walk, the resources must be released + * using media_entity_graph_walk_cleanup(). */ void media_entity_graph_walk_start(struct media_entity_graph *graph, - struct media_entity *entity); + struct media_entity *entity); /** * media_entity_graph_walk_next - Get the next entity in the graph -- cgit 1.2.3-korg From 106b9907c368e32d0b01d8ea682c44ef811e6e36 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 15:32:23 +0200 Subject: [media] media: Use the new media graph walk interface The media graph walk requires initialisation and cleanup soon. Update the users to perform the soon necessary API calls. Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 9bf96c71374ee5..85af715d2a20e1 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -383,7 +383,13 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity, mutex_lock(&mdev->graph_mutex); - media_entity_graph_walk_start(graph, entity); + ret = media_entity_graph_walk_init(&pipe->graph, mdev); + if (ret) { + mutex_unlock(&mdev->graph_mutex); + return ret; + } + + media_entity_graph_walk_start(&pipe->graph, entity); while ((entity = media_entity_graph_walk_next(graph))) { DECLARE_BITMAP(active, MEDIA_ENTITY_MAX_PADS); @@ -481,6 +487,8 @@ error: break; } + media_entity_graph_walk_cleanup(graph); + mutex_unlock(&mdev->graph_mutex); return ret; @@ -502,6 +510,8 @@ void media_entity_pipeline_stop(struct media_entity *entity) entity->pipe = NULL; } + media_entity_graph_walk_cleanup(graph); + mutex_unlock(&mdev->graph_mutex); } EXPORT_SYMBOL_GPL(media_entity_pipeline_stop); -- cgit 1.2.3-korg From 28461451c0fc943fa9271e653483857f20d9b489 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 11:32:24 -0200 Subject: [media] v4l: omap3isp: Use the new media graph walk interface The media graph walk requires initialisation and cleanup soon. Update the users to perform the soon necessary API calls. Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/omap3isp/isp.c | 63 ++++++++++++++++++------------ drivers/media/platform/omap3isp/isp.h | 4 +- drivers/media/platform/omap3isp/ispvideo.c | 20 +++++++++- drivers/media/platform/omap3isp/ispvideo.h | 1 + 4 files changed, 61 insertions(+), 27 deletions(-) diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c index 942b189c0eca5e..581c50e8662170 100644 --- a/drivers/media/platform/omap3isp/isp.c +++ b/drivers/media/platform/omap3isp/isp.c @@ -683,14 +683,14 @@ static irqreturn_t isp_isr(int irq, void *_isp) * * Return the total number of users of all video device nodes in the pipeline. */ -static int isp_pipeline_pm_use_count(struct media_entity *entity) +static int isp_pipeline_pm_use_count(struct media_entity *entity, + struct media_entity_graph *graph) { - struct media_entity_graph graph; int use = 0; - media_entity_graph_walk_start(&graph, entity); + media_entity_graph_walk_start(graph, entity); - while ((entity = media_entity_graph_walk_next(&graph))) { + while ((entity = media_entity_graph_walk_next(graph))) { if (is_media_entity_v4l2_io(entity)) use += entity->use_count; } @@ -742,27 +742,27 @@ static int isp_pipeline_pm_power_one(struct media_entity *entity, int change) * * Return 0 on success or a negative error code on failure. */ -static int isp_pipeline_pm_power(struct media_entity *entity, int change) +static int isp_pipeline_pm_power(struct media_entity *entity, int change, + struct media_entity_graph *graph) { - struct media_entity_graph graph; struct media_entity *first = entity; int ret = 0; if (!change) return 0; - media_entity_graph_walk_start(&graph, entity); + media_entity_graph_walk_start(graph, entity); - while (!ret && (entity = media_entity_graph_walk_next(&graph))) + while (!ret && (entity = media_entity_graph_walk_next(graph))) if (is_media_entity_v4l2_subdev(entity)) ret = isp_pipeline_pm_power_one(entity, change); if (!ret) - return 0; + return ret; - media_entity_graph_walk_start(&graph, first); + media_entity_graph_walk_start(graph, first); - while ((first = media_entity_graph_walk_next(&graph)) + while ((first = media_entity_graph_walk_next(graph)) && first != entity) if (is_media_entity_v4l2_subdev(first)) isp_pipeline_pm_power_one(first, -change); @@ -782,7 +782,8 @@ static int isp_pipeline_pm_power(struct media_entity *entity, int change) * off is assumed to never fail. No failure can occur when the use parameter is * set to 0. */ -int omap3isp_pipeline_pm_use(struct media_entity *entity, int use) +int omap3isp_pipeline_pm_use(struct media_entity *entity, int use, + struct media_entity_graph *graph) { int change = use ? 1 : -1; int ret; @@ -794,7 +795,7 @@ int omap3isp_pipeline_pm_use(struct media_entity *entity, int use) WARN_ON(entity->use_count < 0); /* Apply power change to connected non-nodes. */ - ret = isp_pipeline_pm_power(entity, change); + ret = isp_pipeline_pm_power(entity, change, graph); if (ret < 0) entity->use_count -= change; @@ -820,35 +821,49 @@ int omap3isp_pipeline_pm_use(struct media_entity *entity, int use) static int isp_pipeline_link_notify(struct media_link *link, u32 flags, unsigned int notification) { + struct media_entity_graph *graph = + &container_of(link->graph_obj.mdev, struct isp_device, + media_dev)->pm_count_graph; struct media_entity *source = link->source->entity; struct media_entity *sink = link->sink->entity; - int source_use = isp_pipeline_pm_use_count(source); - int sink_use = isp_pipeline_pm_use_count(sink); - int ret; + int source_use; + int sink_use; + int ret = 0; + + if (notification == MEDIA_DEV_NOTIFY_PRE_LINK_CH) { + ret = media_entity_graph_walk_init(graph, + link->graph_obj.mdev); + if (ret) + return ret; + } + + source_use = isp_pipeline_pm_use_count(source, graph); + sink_use = isp_pipeline_pm_use_count(sink, graph); if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH && !(flags & MEDIA_LNK_FL_ENABLED)) { /* Powering off entities is assumed to never fail. */ - isp_pipeline_pm_power(source, -sink_use); - isp_pipeline_pm_power(sink, -source_use); + isp_pipeline_pm_power(source, -sink_use, graph); + isp_pipeline_pm_power(sink, -source_use, graph); return 0; } if (notification == MEDIA_DEV_NOTIFY_PRE_LINK_CH && (flags & MEDIA_LNK_FL_ENABLED)) { - ret = isp_pipeline_pm_power(source, sink_use); + ret = isp_pipeline_pm_power(source, sink_use, graph); if (ret < 0) return ret; - ret = isp_pipeline_pm_power(sink, source_use); + ret = isp_pipeline_pm_power(sink, source_use, graph); if (ret < 0) - isp_pipeline_pm_power(source, -sink_use); - - return ret; + isp_pipeline_pm_power(source, -sink_use, graph); } - return 0; + if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH) + media_entity_graph_walk_cleanup(graph); + + return ret; } /* ----------------------------------------------------------------------------- diff --git a/drivers/media/platform/omap3isp/isp.h b/drivers/media/platform/omap3isp/isp.h index 5acc2e6511a55b..b6f81f20aa733c 100644 --- a/drivers/media/platform/omap3isp/isp.h +++ b/drivers/media/platform/omap3isp/isp.h @@ -176,6 +176,7 @@ struct isp_device { struct v4l2_device v4l2_dev; struct v4l2_async_notifier notifier; struct media_device media_dev; + struct media_entity_graph pm_count_graph; struct device *dev; u32 revision; @@ -265,7 +266,8 @@ void omap3isp_subclk_enable(struct isp_device *isp, void omap3isp_subclk_disable(struct isp_device *isp, enum isp_subclk_resource res); -int omap3isp_pipeline_pm_use(struct media_entity *entity, int use); +int omap3isp_pipeline_pm_use(struct media_entity *entity, int use, + struct media_entity_graph *graph); int omap3isp_register_entities(struct platform_device *pdev, struct v4l2_device *v4l2_dev); diff --git a/drivers/media/platform/omap3isp/ispvideo.c b/drivers/media/platform/omap3isp/ispvideo.c index 1240b06202f048..33123f1121514f 100644 --- a/drivers/media/platform/omap3isp/ispvideo.c +++ b/drivers/media/platform/omap3isp/ispvideo.c @@ -227,8 +227,15 @@ static int isp_video_get_graph_data(struct isp_video *video, struct media_entity *entity = &video->video.entity; struct media_device *mdev = entity->graph_obj.mdev; struct isp_video *far_end = NULL; + int ret; mutex_lock(&mdev->graph_mutex); + ret = media_entity_graph_walk_init(&graph, entity->graph_obj.mdev); + if (ret) { + mutex_unlock(&mdev->graph_mutex); + return ret; + } + media_entity_graph_walk_start(&graph, entity); while ((entity = media_entity_graph_walk_next(&graph))) { @@ -252,6 +259,8 @@ static int isp_video_get_graph_data(struct isp_video *video, mutex_unlock(&mdev->graph_mutex); + media_entity_graph_walk_cleanup(&graph); + if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) { pipe->input = far_end; pipe->output = video; @@ -1244,7 +1253,12 @@ static int isp_video_open(struct file *file) goto done; } - ret = omap3isp_pipeline_pm_use(&video->video.entity, 1); + ret = media_entity_graph_walk_init(&handle->graph, + &video->isp->media_dev); + if (ret) + goto done; + + ret = omap3isp_pipeline_pm_use(&video->video.entity, 1, &handle->graph); if (ret < 0) { omap3isp_put(video->isp); goto done; @@ -1275,6 +1289,7 @@ static int isp_video_open(struct file *file) done: if (ret < 0) { v4l2_fh_del(&handle->vfh); + media_entity_graph_walk_cleanup(&handle->graph); kfree(handle); } @@ -1294,7 +1309,8 @@ static int isp_video_release(struct file *file) vb2_queue_release(&handle->queue); mutex_unlock(&video->queue_lock); - omap3isp_pipeline_pm_use(&video->video.entity, 0); + omap3isp_pipeline_pm_use(&video->video.entity, 0, &handle->graph); + media_entity_graph_walk_cleanup(&handle->graph); /* Release the file handle. */ v4l2_fh_del(vfh); diff --git a/drivers/media/platform/omap3isp/ispvideo.h b/drivers/media/platform/omap3isp/ispvideo.h index bcf0e0acc8f387..a340165732db32 100644 --- a/drivers/media/platform/omap3isp/ispvideo.h +++ b/drivers/media/platform/omap3isp/ispvideo.h @@ -189,6 +189,7 @@ struct isp_video_fh { struct vb2_queue queue; struct v4l2_format format; struct v4l2_fract timeperframe; + struct media_entity_graph graph; }; #define to_isp_video_fh(fh) container_of(fh, struct isp_video_fh, vfh) -- cgit 1.2.3-korg From fd7e5309a5324c243cb285257a2e5e35d9bcaa56 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 15:32:25 +0200 Subject: [media] v4l: exynos4-is: Use the new media graph walk interface The media graph walk requires initialisation and cleanup soon. Update the users to perform the soon necessary API calls. Signed-off-by: Sakari Ailus Cc: Javier Martinez Canillas Cc: Kamil Debski Cc: Sylwester Nawrocki Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/exynos4-is/media-dev.c | 31 +++++++++++++++++---------- drivers/media/platform/exynos4-is/media-dev.h | 1 + 2 files changed, 21 insertions(+), 11 deletions(-) diff --git a/drivers/media/platform/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c index 27663dd4529490..f6b391e795c654 100644 --- a/drivers/media/platform/exynos4-is/media-dev.c +++ b/drivers/media/platform/exynos4-is/media-dev.c @@ -1046,10 +1046,10 @@ static int __fimc_md_modify_pipeline(struct media_entity *entity, bool enable) } /* Locking: called with entity->graph_obj.mdev->graph_mutex mutex held. */ -static int __fimc_md_modify_pipelines(struct media_entity *entity, bool enable) +static int __fimc_md_modify_pipelines(struct media_entity *entity, bool enable, + struct media_entity_graph *graph) { struct media_entity *entity_err = entity; - struct media_entity_graph graph; int ret; /* @@ -1058,9 +1058,9 @@ static int __fimc_md_modify_pipelines(struct media_entity *entity, bool enable) * through active links. This is needed as we cannot power on/off the * subdevs in random order. */ - media_entity_graph_walk_start(&graph, entity); + media_entity_graph_walk_start(graph, entity); - while ((entity = media_entity_graph_walk_next(&graph))) { + while ((entity = media_entity_graph_walk_next(graph))) { if (!is_media_entity_v4l2_io(entity)) continue; @@ -1071,10 +1071,11 @@ static int __fimc_md_modify_pipelines(struct media_entity *entity, bool enable) } return 0; - err: - media_entity_graph_walk_start(&graph, entity_err); - while ((entity_err = media_entity_graph_walk_next(&graph))) { +err: + media_entity_graph_walk_start(graph, entity_err); + + while ((entity_err = media_entity_graph_walk_next(graph))) { if (!is_media_entity_v4l2_io(entity_err)) continue; @@ -1090,21 +1091,29 @@ static int __fimc_md_modify_pipelines(struct media_entity *entity, bool enable) static int fimc_md_link_notify(struct media_link *link, unsigned int flags, unsigned int notification) { + struct media_entity_graph *graph = + &container_of(link->graph_obj.mdev, struct fimc_md, + media_dev)->link_setup_graph; struct media_entity *sink = link->sink->entity; int ret = 0; /* Before link disconnection */ if (notification == MEDIA_DEV_NOTIFY_PRE_LINK_CH) { + ret = media_entity_graph_walk_init(graph, + link->graph_obj.mdev); + if (ret) + return ret; if (!(flags & MEDIA_LNK_FL_ENABLED)) - ret = __fimc_md_modify_pipelines(sink, false); + ret = __fimc_md_modify_pipelines(sink, false, graph); #if 0 else /* TODO: Link state change validation */ #endif /* After link activation */ - } else if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH && - (link->flags & MEDIA_LNK_FL_ENABLED)) { - ret = __fimc_md_modify_pipelines(sink, true); + } else if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH) { + if (link->flags & MEDIA_LNK_FL_ENABLED) + ret = __fimc_md_modify_pipelines(sink, true, graph); + media_entity_graph_walk_cleanup(graph); } return ret ? -EPIPE : 0; diff --git a/drivers/media/platform/exynos4-is/media-dev.h b/drivers/media/platform/exynos4-is/media-dev.h index e8845e1f5aabed..ed122cb2dd7416 100644 --- a/drivers/media/platform/exynos4-is/media-dev.h +++ b/drivers/media/platform/exynos4-is/media-dev.h @@ -154,6 +154,7 @@ struct fimc_md { bool user_subdev_api; spinlock_t slock; struct list_head pipelines; + struct media_entity_graph link_setup_graph; }; static inline -- cgit 1.2.3-korg From 08613c549ff5ac98d04d9dd28a4ffafa3918e2ca Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 11:32:26 -0200 Subject: [media] v4l: xilinx: Use the new media graph walk interface The media graph walk requires initialisation and cleanup soon. Update the users to perform the soon necessary API calls. Signed-off-by: Sakari Ailus Cc: Hyun Kwon Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/xilinx/xilinx-dma.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c index 0181ff402a5ab9..7f6898b13cacdb 100644 --- a/drivers/media/platform/xilinx/xilinx-dma.c +++ b/drivers/media/platform/xilinx/xilinx-dma.c @@ -182,10 +182,17 @@ static int xvip_pipeline_validate(struct xvip_pipeline *pipe, struct media_device *mdev = entity->graph_obj.mdev; unsigned int num_inputs = 0; unsigned int num_outputs = 0; + int ret; mutex_lock(&mdev->graph_mutex); /* Walk the graph to locate the video nodes. */ + ret = media_entity_graph_walk_init(&graph, entity->graph_obj.mdev); + if (ret) { + mutex_unlock(&mdev->graph_mutex); + return ret; + } + media_entity_graph_walk_start(&graph, entity); while ((entity = media_entity_graph_walk_next(&graph))) { @@ -206,6 +213,8 @@ static int xvip_pipeline_validate(struct xvip_pipeline *pipe, mutex_unlock(&mdev->graph_mutex); + media_entity_graph_walk_cleanup(&graph); + /* We need exactly one output and zero or one input. */ if (num_outputs != 1 || num_inputs > 1) return -EPIPE; -- cgit 1.2.3-korg From c1a5f1bc0b7a585efaeda40c1eb8f5f4bd9d328d Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 15:32:27 +0200 Subject: [media] v4l: vsp1: Use the new media graph walk interface The media graph walk requires initialisation and cleanup soon. Update the users to perform the soon necessary API calls. Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/vsp1/vsp1_video.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/media/platform/vsp1/vsp1_video.c b/drivers/media/platform/vsp1/vsp1_video.c index e3304303dce3f2..a6b1bd1225efe2 100644 --- a/drivers/media/platform/vsp1/vsp1_video.c +++ b/drivers/media/platform/vsp1/vsp1_video.c @@ -386,6 +386,12 @@ static int vsp1_pipeline_validate(struct vsp1_pipeline *pipe, mutex_lock(&mdev->graph_mutex); /* Walk the graph to locate the entities and video nodes. */ + ret = media_entity_graph_walk_init(&graph, mdev); + if (ret) { + mutex_unlock(&mdev->graph_mutex); + return ret; + } + media_entity_graph_walk_start(&graph, entity); while ((entity = media_entity_graph_walk_next(&graph))) { @@ -419,6 +425,8 @@ static int vsp1_pipeline_validate(struct vsp1_pipeline *pipe, mutex_unlock(&mdev->graph_mutex); + media_entity_graph_walk_cleanup(&graph); + /* We need one output and at least one input. */ if (pipe->num_inputs == 0 || !pipe->output) { ret = -EPIPE; -- cgit 1.2.3-korg From 29d8da02d13020a18929a30692d454bd863d4207 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 11:32:28 -0200 Subject: [media] media: Use entity enums in graph walk This will also mean that the necessary graph related data structures will be allocated dynamically, removing the need for maximum ID checks. Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 16 ++++++---------- include/media/media-entity.h | 4 ++-- 2 files changed, 8 insertions(+), 12 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 85af715d2a20e1..86a8396f6ec286 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -296,7 +296,7 @@ static struct media_entity *stack_pop(struct media_entity_graph *graph) __must_check int media_entity_graph_walk_init( struct media_entity_graph *graph, struct media_device *mdev) { - return 0; + return media_entity_enum_init(&graph->ent_enum, mdev); } EXPORT_SYMBOL_GPL(media_entity_graph_walk_init); @@ -306,20 +306,18 @@ EXPORT_SYMBOL_GPL(media_entity_graph_walk_init); */ void media_entity_graph_walk_cleanup(struct media_entity_graph *graph) { + media_entity_enum_cleanup(&graph->ent_enum); } EXPORT_SYMBOL_GPL(media_entity_graph_walk_cleanup); void media_entity_graph_walk_start(struct media_entity_graph *graph, struct media_entity *entity) { + media_entity_enum_zero(&graph->ent_enum); + media_entity_enum_set(&graph->ent_enum, entity); + graph->top = 0; graph->stack[graph->top].entity = NULL; - bitmap_zero(graph->entities, MEDIA_ENTITY_ENUM_MAX_ID); - - if (WARN_ON(media_entity_id(entity) >= MEDIA_ENTITY_ENUM_MAX_ID)) - return; - - __set_bit(media_entity_id(entity), graph->entities); stack_push(graph, entity); } EXPORT_SYMBOL_GPL(media_entity_graph_walk_start); @@ -350,11 +348,9 @@ media_entity_graph_walk_next(struct media_entity_graph *graph) /* Get the entity in the other end of the link . */ next = media_entity_other(entity, link); - if (WARN_ON(media_entity_id(next) >= MEDIA_ENTITY_ENUM_MAX_ID)) - return NULL; /* Has the entity already been visited? */ - if (__test_and_set_bit(media_entity_id(next), graph->entities)) { + if (media_entity_enum_test_and_set(&graph->ent_enum, next)) { link_top(graph) = link_top(graph)->next; continue; } diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 7f028ea8491184..a53acb099c16f5 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -103,7 +103,7 @@ struct media_entity_enum { * @stack: Graph traversal stack; the stack contains information * on the path the media entities to be walked and the * links through which they were reached. - * @entities: Visited entities + * @ent_enum: Visited entities * @top: The top of the stack */ struct media_entity_graph { @@ -112,7 +112,7 @@ struct media_entity_graph { struct list_head *link; } stack[MEDIA_ENTITY_ENUM_MAX_DEPTH]; - DECLARE_BITMAP(entities, MEDIA_ENTITY_ENUM_MAX_ID); + struct media_entity_enum ent_enum; int top; }; -- cgit 1.2.3-korg From 74a4133079f739eb2f4604263fdb974ce10120a8 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 11:32:29 -0200 Subject: [media] media: Keep using the same graph walk object for a given pipeline Initialise a given graph walk object once, and then keep using it whilst the same pipeline is running. Once the pipeline is stopped, release the graph walk object. Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 17 +++++++++++------ include/media/media-entity.h | 4 +++- 2 files changed, 14 insertions(+), 7 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 86a8396f6ec286..3cad525c2ac1fe 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -379,10 +379,10 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity, mutex_lock(&mdev->graph_mutex); - ret = media_entity_graph_walk_init(&pipe->graph, mdev); - if (ret) { - mutex_unlock(&mdev->graph_mutex); - return ret; + if (!pipe->streaming_count++) { + ret = media_entity_graph_walk_init(&pipe->graph, mdev); + if (ret) + goto error_graph_walk_start; } media_entity_graph_walk_start(&pipe->graph, entity); @@ -483,7 +483,9 @@ error: break; } - media_entity_graph_walk_cleanup(graph); +error_graph_walk_start: + if (!--pipe->streaming_count) + media_entity_graph_walk_cleanup(graph); mutex_unlock(&mdev->graph_mutex); @@ -495,9 +497,11 @@ void media_entity_pipeline_stop(struct media_entity *entity) { struct media_device *mdev = entity->graph_obj.mdev; struct media_entity_graph *graph = &entity->pipe->graph; + struct media_pipeline *pipe = entity->pipe; mutex_lock(&mdev->graph_mutex); + WARN_ON(!pipe->streaming_count); media_entity_graph_walk_start(graph, entity); while ((entity = media_entity_graph_walk_next(graph))) { @@ -506,7 +510,8 @@ void media_entity_pipeline_stop(struct media_entity *entity) entity->pipe = NULL; } - media_entity_graph_walk_cleanup(graph); + if (!--pipe->streaming_count) + media_entity_graph_walk_cleanup(graph); mutex_unlock(&mdev->graph_mutex); } diff --git a/include/media/media-entity.h b/include/media/media-entity.h index a53acb099c16f5..a47a7c8a93cfdf 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -119,9 +119,11 @@ struct media_entity_graph { /* * struct media_pipeline - Media pipeline related information * - * @graph: Media graph walk during pipeline start / stop + * @streaming_count: Streaming start count - streaming stop count + * @graph: Media graph walk during pipeline start / stop */ struct media_pipeline { + int streaming_count; struct media_entity_graph graph; }; -- cgit 1.2.3-korg From 17d3d4058a61329a6a4384054da6a57c65c7e8ba Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 11:32:30 -0200 Subject: [media] v4l: omap3isp: Use media entity enumeration interface Instead of using a bitmap directly in a driver, use the new media entity enumeration interface to perform the same. Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/omap3isp/isp.c | 21 +++++++++++++-------- drivers/media/platform/omap3isp/isp.h | 5 +++-- drivers/media/platform/omap3isp/ispccdc.c | 2 +- drivers/media/platform/omap3isp/ispvideo.c | 20 ++++++++++++++------ drivers/media/platform/omap3isp/ispvideo.h | 4 ++-- 5 files changed, 33 insertions(+), 19 deletions(-) diff --git a/drivers/media/platform/omap3isp/isp.c b/drivers/media/platform/omap3isp/isp.c index 581c50e8662170..0bcfa553c1aa25 100644 --- a/drivers/media/platform/omap3isp/isp.c +++ b/drivers/media/platform/omap3isp/isp.c @@ -896,7 +896,7 @@ static int isp_pipeline_enable(struct isp_pipeline *pipe, * starting entities if the pipeline won't start anyway (those entities * would then likely fail to stop, making the problem worse). */ - if (pipe->entities & isp->crashed) + if (media_entity_enum_intersects(&pipe->ent_enum, &isp->crashed)) return -EIO; spin_lock_irqsave(&pipe->lock, flags); @@ -989,7 +989,6 @@ static int isp_pipeline_disable(struct isp_pipeline *pipe) struct v4l2_subdev *subdev; int failure = 0; int ret; - u32 id; /* * We need to stop all the modules after CCDC first or they'll @@ -1041,10 +1040,9 @@ static int isp_pipeline_disable(struct isp_pipeline *pipe) if (ret) { dev_info(isp->dev, "Unable to stop %s\n", subdev->name); isp->stop_failure = true; - if (subdev == &isp->isp_prev.subdev) { - id = media_entity_id(&subdev->entity); - isp->crashed |= 1U << id; - } + if (subdev == &isp->isp_prev.subdev) + media_entity_enum_set(&isp->crashed, + &subdev->entity); failure = -ETIMEDOUT; } } @@ -1250,7 +1248,7 @@ static int isp_reset(struct isp_device *isp) } isp->stop_failure = false; - isp->crashed = 0; + media_entity_enum_zero(&isp->crashed); return 0; } @@ -1661,7 +1659,8 @@ static void __omap3isp_put(struct isp_device *isp, bool save_ctx) /* Reset the ISP if an entity has failed to stop. This is the * only way to recover from such conditions. */ - if (isp->crashed || isp->stop_failure) + if (!media_entity_enum_empty(&isp->crashed) || + isp->stop_failure) isp_reset(isp); isp_disable_clocks(isp); } @@ -2219,6 +2218,8 @@ static int isp_remove(struct platform_device *pdev) isp_detach_iommu(isp); __omap3isp_put(isp, false); + media_entity_enum_cleanup(&isp->crashed); + return 0; } @@ -2366,6 +2367,10 @@ static int isp_subdev_notifier_complete(struct v4l2_async_notifier *async) struct isp_bus_cfg *bus; int ret; + ret = media_entity_enum_init(&isp->crashed, &isp->media_dev); + if (ret) + return ret; + list_for_each_entry(sd, &v4l2_dev->subdevs, list) { /* Only try to link entities whose interface was set on bound */ if (sd->host_priv) { diff --git a/drivers/media/platform/omap3isp/isp.h b/drivers/media/platform/omap3isp/isp.h index b6f81f20aa733c..49b7f71ac96897 100644 --- a/drivers/media/platform/omap3isp/isp.h +++ b/drivers/media/platform/omap3isp/isp.h @@ -17,6 +17,7 @@ #ifndef OMAP3_ISP_CORE_H #define OMAP3_ISP_CORE_H +#include #include #include #include @@ -152,7 +153,7 @@ struct isp_xclk { * @stat_lock: Spinlock for handling statistics * @isp_mutex: Mutex for serializing requests to ISP. * @stop_failure: Indicates that an entity failed to stop. - * @crashed: Bitmask of crashed entities (indexed by entity ID) + * @crashed: Crashed ent_enum * @has_context: Context has been saved at least once and can be restored. * @ref_count: Reference count for handling multiple ISP requests. * @cam_ick: Pointer to camera interface clock structure. @@ -195,7 +196,7 @@ struct isp_device { spinlock_t stat_lock; /* common lock for statistic drivers */ struct mutex isp_mutex; /* For handling ref_count field */ bool stop_failure; - u32 crashed; + struct media_entity_enum crashed; int has_context; int ref_count; unsigned int autoidle; diff --git a/drivers/media/platform/omap3isp/ispccdc.c b/drivers/media/platform/omap3isp/ispccdc.c index 4eaf926d607341..bb3974c98e37eb 100644 --- a/drivers/media/platform/omap3isp/ispccdc.c +++ b/drivers/media/platform/omap3isp/ispccdc.c @@ -1608,7 +1608,7 @@ static int ccdc_isr_buffer(struct isp_ccdc_device *ccdc) /* Wait for the CCDC to become idle. */ if (ccdc_sbl_wait_idle(ccdc, 1000)) { dev_info(isp->dev, "CCDC won't become idle!\n"); - isp->crashed |= 1U << media_entity_id(&ccdc->subdev.entity); + media_entity_enum_set(&isp->crashed, &ccdc->subdev.entity); omap3isp_pipeline_cancel_stream(pipe); return 0; } diff --git a/drivers/media/platform/omap3isp/ispvideo.c b/drivers/media/platform/omap3isp/ispvideo.c index 33123f1121514f..994dfc0813f6b7 100644 --- a/drivers/media/platform/omap3isp/ispvideo.c +++ b/drivers/media/platform/omap3isp/ispvideo.c @@ -241,7 +241,7 @@ static int isp_video_get_graph_data(struct isp_video *video, while ((entity = media_entity_graph_walk_next(&graph))) { struct isp_video *__video; - pipe->entities |= 1 << media_entity_id(entity); + media_entity_enum_set(&pipe->ent_enum, entity); if (far_end != NULL) continue; @@ -901,7 +901,6 @@ static int isp_video_check_external_subdevs(struct isp_video *video, struct v4l2_ext_control ctrl; unsigned int i; int ret; - u32 id; /* Memory-to-memory pipelines have no external subdev. */ if (pipe->input != NULL) @@ -909,7 +908,7 @@ static int isp_video_check_external_subdevs(struct isp_video *video, for (i = 0; i < ARRAY_SIZE(ents); i++) { /* Is the entity part of the pipeline? */ - if (!(pipe->entities & (1 << media_entity_id(ents[i])))) + if (!media_entity_enum_test(&pipe->ent_enum, ents[i])) continue; /* ISP entities have always sink pad == 0. Find source. */ @@ -961,8 +960,8 @@ static int isp_video_check_external_subdevs(struct isp_video *video, pipe->external_rate = ctrl.value64; - id = media_entity_id(&isp->isp_ccdc.subdev.entity); - if (pipe->entities & (1 << id)) { + if (media_entity_enum_test(&pipe->ent_enum, + &isp->isp_ccdc.subdev.entity)) { unsigned int rate = UINT_MAX; /* * Check that maximum allowed CCDC pixel rate isn't @@ -1028,7 +1027,9 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) pipe = video->video.entity.pipe ? to_isp_pipeline(&video->video.entity) : &video->pipe; - pipe->entities = 0; + ret = media_entity_enum_init(&pipe->ent_enum, &video->isp->media_dev); + if (ret) + goto err_enum_init; /* TODO: Implement PM QoS */ pipe->l3_ick = clk_get_rate(video->isp->clock[ISP_CLK_L3_ICK]); @@ -1102,6 +1103,7 @@ isp_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) } mutex_unlock(&video->stream_lock); + return 0; err_set_stream: @@ -1122,7 +1124,11 @@ err_pipeline_start: INIT_LIST_HEAD(&video->dmaqueue); video->queue = NULL; + media_entity_enum_cleanup(&pipe->ent_enum); + +err_enum_init: mutex_unlock(&video->stream_lock); + return ret; } @@ -1174,6 +1180,8 @@ isp_video_streamoff(struct file *file, void *fh, enum v4l2_buf_type type) /* TODO: Implement PM QoS */ media_entity_pipeline_stop(&video->video.entity); + media_entity_enum_cleanup(&pipe->ent_enum); + done: mutex_unlock(&video->stream_lock); return 0; diff --git a/drivers/media/platform/omap3isp/ispvideo.h b/drivers/media/platform/omap3isp/ispvideo.h index a340165732db32..156429878d646d 100644 --- a/drivers/media/platform/omap3isp/ispvideo.h +++ b/drivers/media/platform/omap3isp/ispvideo.h @@ -80,7 +80,7 @@ enum isp_pipeline_state { * struct isp_pipeline - An ISP hardware pipeline * @field: The field being processed by the pipeline * @error: A hardware error occurred during capture - * @entities: Bitmask of entities in the pipeline (indexed by entity ID) + * @ent_enum: Entities in the pipeline */ struct isp_pipeline { struct media_pipeline pipe; @@ -89,7 +89,7 @@ struct isp_pipeline { enum isp_pipeline_stream_state stream_state; struct isp_video *input; struct isp_video *output; - u32 entities; + struct media_entity_enum ent_enum; unsigned long l3_ick; unsigned int max_rate; enum v4l2_field field; -- cgit 1.2.3-korg From 54b5a749b4f3010b3b657507b8ef1eee3a100b09 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 11:32:31 -0200 Subject: [media] v4l: vsp1: Use media entity enumeration interface Instead of using a bitmap directly in a driver, use the new media entity enumeration interface to perform the same. Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/vsp1/vsp1_video.c | 45 ++++++++++++++++++++++---------- 1 file changed, 31 insertions(+), 14 deletions(-) diff --git a/drivers/media/platform/vsp1/vsp1_video.c b/drivers/media/platform/vsp1/vsp1_video.c index a6b1bd1225efe2..637d0d6f79fba5 100644 --- a/drivers/media/platform/vsp1/vsp1_video.c +++ b/drivers/media/platform/vsp1/vsp1_video.c @@ -282,24 +282,35 @@ static int vsp1_pipeline_validate_branch(struct vsp1_pipeline *pipe, struct vsp1_rwpf *output) { struct vsp1_entity *entity; - unsigned int entities = 0; + struct media_entity_enum ent_enum; struct media_pad *pad; + int rval; bool bru_found = false; input->location.left = 0; input->location.top = 0; + rval = media_entity_enum_init( + &ent_enum, input->entity.pads[RWPF_PAD_SOURCE].graph_obj.mdev); + if (rval) + return rval; + pad = media_entity_remote_pad(&input->entity.pads[RWPF_PAD_SOURCE]); while (1) { - if (pad == NULL) - return -EPIPE; + if (pad == NULL) { + rval = -EPIPE; + goto out; + } /* We've reached a video node, that shouldn't have happened. */ - if (!is_media_entity_v4l2_subdev(pad->entity)) - return -EPIPE; + if (!is_media_entity_v4l2_subdev(pad->entity)) { + rval = -EPIPE; + goto out; + } - entity = to_vsp1_entity(media_entity_to_v4l2_subdev(pad->entity)); + entity = to_vsp1_entity( + media_entity_to_v4l2_subdev(pad->entity)); /* A BRU is present in the pipeline, store the compose rectangle * location in the input RPF for use when configuring the RPF. @@ -322,15 +333,18 @@ static int vsp1_pipeline_validate_branch(struct vsp1_pipeline *pipe, break; /* Ensure the branch has no loop. */ - if (entities & (1 << media_entity_id(&entity->subdev.entity))) - return -EPIPE; - - entities |= 1 << media_entity_id(&entity->subdev.entity); + if (media_entity_enum_test_and_set(&ent_enum, + &entity->subdev.entity)) { + rval = -EPIPE; + goto out; + } /* UDS can't be chained. */ if (entity->type == VSP1_ENTITY_UDS) { - if (pipe->uds) - return -EPIPE; + if (pipe->uds) { + rval = -EPIPE; + goto out; + } pipe->uds = entity; pipe->uds_input = bru_found ? pipe->bru @@ -348,9 +362,12 @@ static int vsp1_pipeline_validate_branch(struct vsp1_pipeline *pipe, /* The last entity must be the output WPF. */ if (entity != &output->entity) - return -EPIPE; + rval = -EPIPE; - return 0; +out: + media_entity_enum_cleanup(&ent_enum); + + return rval; } static void __vsp1_pipeline_cleanup(struct vsp1_pipeline *pipe) -- cgit 1.2.3-korg From ad92b5cf35adc2d3ec0116f4744561d5405a0db7 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 11:32:32 -0200 Subject: [media] staging: v4l: omap4iss: Fix sub-device power management code The same bug was present in the omap4iss driver as was in the omap3isp driver. The code got copied to the omap4iss driver while broken. Fix the omap4iss driver as well. Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/media/omap4iss/iss.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/media/omap4iss/iss.c b/drivers/staging/media/omap4iss/iss.c index 7209b92b1f8657..2f7a9bb0a9e783 100644 --- a/drivers/staging/media/omap4iss/iss.c +++ b/drivers/staging/media/omap4iss/iss.c @@ -533,14 +533,14 @@ static int iss_pipeline_link_notify(struct media_link *link, u32 flags, int ret; if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH && - !(link->flags & MEDIA_LNK_FL_ENABLED)) { + !(flags & MEDIA_LNK_FL_ENABLED)) { /* Powering off entities is assumed to never fail. */ iss_pipeline_pm_power(source, -sink_use); iss_pipeline_pm_power(sink, -source_use); return 0; } - if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH && + if (notification == MEDIA_DEV_NOTIFY_PRE_LINK_CH && (flags & MEDIA_LNK_FL_ENABLED)) { ret = iss_pipeline_pm_power(source, sink_use); if (ret < 0) -- cgit 1.2.3-korg From 6246b2a7ad1ffab5a712c38005b668f3e4ca2825 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 11:32:33 -0200 Subject: [media] staging: v4l: omap4iss: Use media entity enumeration interface Instead of using a bitmap directly in a driver, use the new media entity enumeration interface to perform the same. Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/media/omap4iss/iss.c | 15 +++++++++++---- drivers/staging/media/omap4iss/iss.h | 4 ++-- drivers/staging/media/omap4iss/iss_video.c | 23 ++++++++++++++++------- drivers/staging/media/omap4iss/iss_video.h | 4 ++-- 4 files changed, 31 insertions(+), 15 deletions(-) diff --git a/drivers/staging/media/omap4iss/iss.c b/drivers/staging/media/omap4iss/iss.c index 2f7a9bb0a9e783..6f57f41511d5db 100644 --- a/drivers/staging/media/omap4iss/iss.c +++ b/drivers/staging/media/omap4iss/iss.c @@ -606,7 +606,7 @@ static int iss_pipeline_disable(struct iss_pipeline *pipe, * crashed. Mark it as such, the ISS will be reset when * applications will release it. */ - iss->crashed |= 1U << media_entity_id(&subdev->entity); + media_entity_enum_set(&iss->crashed, &subdev->entity); failure = -ETIMEDOUT; } } @@ -641,7 +641,7 @@ static int iss_pipeline_enable(struct iss_pipeline *pipe, * pipeline won't start anyway (those entities would then likely fail to * stop, making the problem worse). */ - if (pipe->entities & iss->crashed) + if (media_entity_enum_intersects(&pipe->ent_enum, &iss->crashed)) return -EIO; spin_lock_irqsave(&pipe->lock, flags); @@ -761,7 +761,8 @@ static int iss_reset(struct iss_device *iss) return -ETIMEDOUT; } - iss->crashed = 0; + media_entity_enum_zero(&iss->crashed); + return 0; } @@ -1090,7 +1091,7 @@ void omap4iss_put(struct iss_device *iss) * be worth investigating whether resetting the ISP only can't * fix the problem in some cases. */ - if (iss->crashed) + if (!media_entity_enum_empty(&iss->crashed)) iss_reset(iss); iss_disable_clocks(iss); } @@ -1491,6 +1492,10 @@ static int iss_probe(struct platform_device *pdev) if (ret < 0) goto error_modules; + ret = media_entity_enum_init(&iss->crashed, &iss->media_dev); + if (ret) + goto error_entities; + ret = iss_create_links(iss); if (ret < 0) goto error_entities; @@ -1501,6 +1506,7 @@ static int iss_probe(struct platform_device *pdev) error_entities: iss_unregister_entities(iss); + media_entity_enum_cleanup(&iss->crashed); error_modules: iss_cleanup_modules(iss); error_iss: @@ -1518,6 +1524,7 @@ static int iss_remove(struct platform_device *pdev) struct iss_device *iss = platform_get_drvdata(pdev); iss_unregister_entities(iss); + media_entity_enum_cleanup(&iss->crashed); iss_cleanup_modules(iss); return 0; diff --git a/drivers/staging/media/omap4iss/iss.h b/drivers/staging/media/omap4iss/iss.h index 5929357fe68794..693a8f112960b7 100644 --- a/drivers/staging/media/omap4iss/iss.h +++ b/drivers/staging/media/omap4iss/iss.h @@ -82,7 +82,7 @@ struct iss_reg { /* * struct iss_device - ISS device structure. * @syscon: Regmap for the syscon register space - * @crashed: Bitmask of crashed entities (indexed by entity ID) + * @crashed: Crashed entities */ struct iss_device { struct v4l2_device v4l2_dev; @@ -101,7 +101,7 @@ struct iss_device { u64 raw_dmamask; struct mutex iss_mutex; /* For handling ref_count field */ - unsigned int crashed; + struct media_entity_enum crashed; int has_context; int ref_count; diff --git a/drivers/staging/media/omap4iss/iss_video.c b/drivers/staging/media/omap4iss/iss_video.c index 8c6af412bc161c..5f8201f861bc3b 100644 --- a/drivers/staging/media/omap4iss/iss_video.c +++ b/drivers/staging/media/omap4iss/iss_video.c @@ -749,7 +749,7 @@ iss_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) struct iss_video_fh *vfh = to_iss_video_fh(fh); struct iss_video *video = video_drvdata(file); struct media_entity_graph graph; - struct media_entity *entity; + struct media_entity *entity = &video->video.entity; enum iss_pipeline_state state; struct iss_pipeline *pipe; struct iss_video *far_end; @@ -764,24 +764,26 @@ iss_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) /* Start streaming on the pipeline. No link touching an entity in the * pipeline can be activated or deactivated once streaming is started. */ - pipe = video->video.entity.pipe - ? to_iss_pipeline(&video->video.entity) : &video->pipe; + pipe = entity->pipe + ? to_iss_pipeline(entity) : &video->pipe; pipe->external = NULL; pipe->external_rate = 0; pipe->external_bpp = 0; - pipe->entities = 0; + + ret = media_entity_enum_init(&pipe->ent_enum, entity->graph_obj.mdev); + if (ret) + goto err_enum_init; if (video->iss->pdata->set_constraints) video->iss->pdata->set_constraints(video->iss, true); - ret = media_entity_pipeline_start(&video->video.entity, &pipe->pipe); + ret = media_entity_pipeline_start(entity, &pipe->pipe); if (ret < 0) goto err_media_entity_pipeline_start; - entity = &video->video.entity; media_entity_graph_walk_start(&graph, entity); while ((entity = media_entity_graph_walk_next(&graph))) - pipe->entities |= 1 << media_entity_id(entity); + media_entity_enum_set(&pipe->ent_enum, entity); /* Verify that the currently configured format matches the output of * the connected subdev. @@ -852,6 +854,7 @@ iss_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) } mutex_unlock(&video->stream_lock); + return 0; err_omap4iss_set_stream: @@ -863,7 +866,11 @@ err_media_entity_pipeline_start: video->iss->pdata->set_constraints(video->iss, false); video->queue = NULL; + media_entity_enum_cleanup(&pipe->ent_enum); + +err_enum_init: mutex_unlock(&video->stream_lock); + return ret; } @@ -901,6 +908,8 @@ iss_video_streamoff(struct file *file, void *fh, enum v4l2_buf_type type) vb2_streamoff(&vfh->queue, type); video->queue = NULL; + media_entity_enum_cleanup(&pipe->ent_enum); + if (video->iss->pdata->set_constraints) video->iss->pdata->set_constraints(video->iss, false); media_entity_pipeline_stop(&video->video.entity); diff --git a/drivers/staging/media/omap4iss/iss_video.h b/drivers/staging/media/omap4iss/iss_video.h index 41532eda1277f2..c8bd2958a3f86b 100644 --- a/drivers/staging/media/omap4iss/iss_video.h +++ b/drivers/staging/media/omap4iss/iss_video.h @@ -77,7 +77,7 @@ enum iss_pipeline_state { /* * struct iss_pipeline - An OMAP4 ISS hardware pipeline - * @entities: Bitmask of entities in the pipeline (indexed by entity ID) + * @ent_enum: Entities in the pipeline * @error: A hardware error occurred during capture */ struct iss_pipeline { @@ -87,7 +87,7 @@ struct iss_pipeline { enum iss_pipeline_stream_state stream_state; struct iss_video *input; struct iss_video *output; - unsigned int entities; + struct media_entity_enum ent_enum; atomic_t frame_number; bool do_propagation; /* of frame number */ bool error; -- cgit 1.2.3-korg From 809fe79a5f59621202a30c248349a50765b98e1c Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 11:32:34 -0200 Subject: [media] staging: v4l: omap4iss: Use the new media graph walk interface The media graph walk requires initialisation and cleanup soon. Update the users to perform the soon necessary API calls. Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/media/omap4iss/iss.c | 59 +++++++++++++++++++----------- drivers/staging/media/omap4iss/iss.h | 4 +- drivers/staging/media/omap4iss/iss_video.c | 33 +++++++++++++++-- drivers/staging/media/omap4iss/iss_video.h | 1 + 4 files changed, 70 insertions(+), 27 deletions(-) diff --git a/drivers/staging/media/omap4iss/iss.c b/drivers/staging/media/omap4iss/iss.c index 6f57f41511d5db..30b473cfb02013 100644 --- a/drivers/staging/media/omap4iss/iss.c +++ b/drivers/staging/media/omap4iss/iss.c @@ -389,14 +389,14 @@ static irqreturn_t iss_isr(int irq, void *_iss) * * Return the total number of users of all video device nodes in the pipeline. */ -static int iss_pipeline_pm_use_count(struct media_entity *entity) +static int iss_pipeline_pm_use_count(struct media_entity *entity, + struct media_entity_graph *graph) { - struct media_entity_graph graph; int use = 0; - media_entity_graph_walk_start(&graph, entity); + media_entity_graph_walk_start(graph, entity); - while ((entity = media_entity_graph_walk_next(&graph))) { + while ((entity = media_entity_graph_walk_next(graph))) { if (is_media_entity_v4l2_io(entity)) use += entity->use_count; } @@ -449,27 +449,27 @@ static int iss_pipeline_pm_power_one(struct media_entity *entity, int change) * * Return 0 on success or a negative error code on failure. */ -static int iss_pipeline_pm_power(struct media_entity *entity, int change) +static int iss_pipeline_pm_power(struct media_entity *entity, int change, + struct media_entity_graph *graph) { - struct media_entity_graph graph; struct media_entity *first = entity; int ret = 0; if (!change) return 0; - media_entity_graph_walk_start(&graph, entity); + media_entity_graph_walk_start(graph, entity); - while (!ret && (entity = media_entity_graph_walk_next(&graph))) + while (!ret && (entity = media_entity_graph_walk_next(graph))) if (is_media_entity_v4l2_subdev(entity)) ret = iss_pipeline_pm_power_one(entity, change); if (!ret) return 0; - media_entity_graph_walk_start(&graph, first); + media_entity_graph_walk_start(graph, first); - while ((first = media_entity_graph_walk_next(&graph)) && + while ((first = media_entity_graph_walk_next(graph)) && first != entity) if (is_media_entity_v4l2_subdev(first)) iss_pipeline_pm_power_one(first, -change); @@ -489,7 +489,8 @@ static int iss_pipeline_pm_power(struct media_entity *entity, int change) * off is assumed to never fail. No failure can occur when the use parameter is * set to 0. */ -int omap4iss_pipeline_pm_use(struct media_entity *entity, int use) +int omap4iss_pipeline_pm_use(struct media_entity *entity, int use, + struct media_entity_graph *graph) { int change = use ? 1 : -1; int ret; @@ -501,7 +502,7 @@ int omap4iss_pipeline_pm_use(struct media_entity *entity, int use) WARN_ON(entity->use_count < 0); /* Apply power change to connected non-nodes. */ - ret = iss_pipeline_pm_power(entity, change); + ret = iss_pipeline_pm_power(entity, change, graph); if (ret < 0) entity->use_count -= change; @@ -526,34 +527,48 @@ int omap4iss_pipeline_pm_use(struct media_entity *entity, int use) static int iss_pipeline_link_notify(struct media_link *link, u32 flags, unsigned int notification) { + struct media_entity_graph *graph = + &container_of(link->graph_obj.mdev, struct iss_device, + media_dev)->pm_count_graph; struct media_entity *source = link->source->entity; struct media_entity *sink = link->sink->entity; - int source_use = iss_pipeline_pm_use_count(source); - int sink_use = iss_pipeline_pm_use_count(sink); + int source_use; + int sink_use; int ret; + if (notification == MEDIA_DEV_NOTIFY_PRE_LINK_CH) { + ret = media_entity_graph_walk_init(graph, + link->graph_obj.mdev); + if (ret) + return ret; + } + + source_use = iss_pipeline_pm_use_count(source, graph); + sink_use = iss_pipeline_pm_use_count(sink, graph); + if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH && !(flags & MEDIA_LNK_FL_ENABLED)) { /* Powering off entities is assumed to never fail. */ - iss_pipeline_pm_power(source, -sink_use); - iss_pipeline_pm_power(sink, -source_use); + iss_pipeline_pm_power(source, -sink_use, graph); + iss_pipeline_pm_power(sink, -source_use, graph); return 0; } if (notification == MEDIA_DEV_NOTIFY_PRE_LINK_CH && (flags & MEDIA_LNK_FL_ENABLED)) { - ret = iss_pipeline_pm_power(source, sink_use); + ret = iss_pipeline_pm_power(source, sink_use, graph); if (ret < 0) return ret; - ret = iss_pipeline_pm_power(sink, source_use); + ret = iss_pipeline_pm_power(sink, source_use, graph); if (ret < 0) - iss_pipeline_pm_power(source, -sink_use); - - return ret; + iss_pipeline_pm_power(source, -sink_use, graph); } - return 0; + if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH) + media_entity_graph_walk_cleanup(graph); + + return ret; } /* ----------------------------------------------------------------------------- diff --git a/drivers/staging/media/omap4iss/iss.h b/drivers/staging/media/omap4iss/iss.h index 693a8f112960b7..05f08a3caa190f 100644 --- a/drivers/staging/media/omap4iss/iss.h +++ b/drivers/staging/media/omap4iss/iss.h @@ -87,6 +87,7 @@ struct iss_reg { struct iss_device { struct v4l2_device v4l2_dev; struct media_device media_dev; + struct media_entity_graph pm_count_graph; struct device *dev; u32 revision; @@ -151,7 +152,8 @@ void omap4iss_isp_subclk_enable(struct iss_device *iss, void omap4iss_isp_subclk_disable(struct iss_device *iss, enum iss_isp_subclk_resource res); -int omap4iss_pipeline_pm_use(struct media_entity *entity, int use); +int omap4iss_pipeline_pm_use(struct media_entity *entity, int use, + struct media_entity_graph *graph); int omap4iss_register_entities(struct platform_device *pdev, struct v4l2_device *v4l2_dev); diff --git a/drivers/staging/media/omap4iss/iss_video.c b/drivers/staging/media/omap4iss/iss_video.c index 5f8201f861bc3b..058233a9de6742 100644 --- a/drivers/staging/media/omap4iss/iss_video.c +++ b/drivers/staging/media/omap4iss/iss_video.c @@ -209,6 +209,12 @@ iss_video_far_end(struct iss_video *video) struct iss_video *far_end = NULL; mutex_lock(&mdev->graph_mutex); + + if (media_entity_graph_walk_init(&graph, mdev)) { + mutex_unlock(&mdev->graph_mutex); + return NULL; + } + media_entity_graph_walk_start(&graph, entity); while ((entity = media_entity_graph_walk_next(&graph))) { @@ -226,6 +232,9 @@ iss_video_far_end(struct iss_video *video) } mutex_unlock(&mdev->graph_mutex); + + media_entity_graph_walk_cleanup(&graph); + return far_end; } @@ -772,7 +781,11 @@ iss_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) ret = media_entity_enum_init(&pipe->ent_enum, entity->graph_obj.mdev); if (ret) - goto err_enum_init; + goto err_graph_walk_init; + + ret = media_entity_graph_walk_init(&graph, entity->graph_obj.mdev); + if (ret) + goto err_graph_walk_init; if (video->iss->pdata->set_constraints) video->iss->pdata->set_constraints(video->iss, true); @@ -853,6 +866,8 @@ iss_video_streamon(struct file *file, void *fh, enum v4l2_buf_type type) spin_unlock_irqrestore(&video->qlock, flags); } + media_entity_graph_walk_cleanup(&graph); + mutex_unlock(&video->stream_lock); return 0; @@ -866,9 +881,11 @@ err_media_entity_pipeline_start: video->iss->pdata->set_constraints(video->iss, false); video->queue = NULL; + media_entity_graph_walk_cleanup(&graph); + +err_graph_walk_init: media_entity_enum_cleanup(&pipe->ent_enum); -err_enum_init: mutex_unlock(&video->stream_lock); return ret; @@ -992,7 +1009,13 @@ static int iss_video_open(struct file *file) goto done; } - ret = omap4iss_pipeline_pm_use(&video->video.entity, 1); + ret = media_entity_graph_walk_init(&handle->graph, + &video->iss->media_dev); + if (ret) + goto done; + + ret = omap4iss_pipeline_pm_use(&video->video.entity, 1, + &handle->graph); if (ret < 0) { omap4iss_put(video->iss); goto done; @@ -1031,6 +1054,7 @@ static int iss_video_open(struct file *file) done: if (ret < 0) { v4l2_fh_del(&handle->vfh); + media_entity_graph_walk_cleanup(&handle->graph); kfree(handle); } @@ -1046,12 +1070,13 @@ static int iss_video_release(struct file *file) /* Disable streaming and free the buffers queue resources. */ iss_video_streamoff(file, vfh, video->type); - omap4iss_pipeline_pm_use(&video->video.entity, 0); + omap4iss_pipeline_pm_use(&video->video.entity, 0, &handle->graph); /* Release the videobuf2 queue */ vb2_queue_release(&handle->queue); /* Release the file handle. */ + media_entity_graph_walk_cleanup(&handle->graph); v4l2_fh_del(vfh); kfree(handle); file->private_data = NULL; diff --git a/drivers/staging/media/omap4iss/iss_video.h b/drivers/staging/media/omap4iss/iss_video.h index c8bd2958a3f86b..34588b7176ca63 100644 --- a/drivers/staging/media/omap4iss/iss_video.h +++ b/drivers/staging/media/omap4iss/iss_video.h @@ -183,6 +183,7 @@ struct iss_video_fh { struct vb2_queue queue; struct v4l2_format format; struct v4l2_fract timeperframe; + struct media_entity_graph graph; }; #define to_iss_video_fh(fh) container_of(fh, struct iss_video_fh, vfh) -- cgit 1.2.3-korg From bb0faebdc1d377705081fed67af3f3f3001ac7b8 Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 11:32:35 -0200 Subject: [media] staging: v4l: davinci_vpbe: Use the new media graph walk interface The media graph walk requires initialisation and cleanup soon. Update the users to perform the soon necessary API calls. Signed-off-by: Sakari Ailus Cc: Prabhakar Lad Signed-off-by: Mauro Carvalho Chehab --- drivers/staging/media/davinci_vpfe/vpfe_video.c | 37 ++++++++++++++++++------- drivers/staging/media/davinci_vpfe/vpfe_video.h | 1 + 2 files changed, 28 insertions(+), 10 deletions(-) diff --git a/drivers/staging/media/davinci_vpfe/vpfe_video.c b/drivers/staging/media/davinci_vpfe/vpfe_video.c index 285dc1a69b2ca0..3ec7e65a3ffa52 100644 --- a/drivers/staging/media/davinci_vpfe/vpfe_video.c +++ b/drivers/staging/media/davinci_vpfe/vpfe_video.c @@ -127,13 +127,14 @@ __vpfe_video_get_format(struct vpfe_video_device *video, } /* make a note of pipeline details */ -static void vpfe_prepare_pipeline(struct vpfe_video_device *video) +static int vpfe_prepare_pipeline(struct vpfe_video_device *video) { + struct media_entity_graph graph; struct media_entity *entity = &video->video_dev.entity; struct media_device *mdev = entity->graph_obj.mdev; struct vpfe_pipeline *pipe = &video->pipe; struct vpfe_video_device *far_end = NULL; - struct media_entity_graph graph; + int ret; pipe->input_num = 0; pipe->output_num = 0; @@ -144,6 +145,11 @@ static void vpfe_prepare_pipeline(struct vpfe_video_device *video) pipe->outputs[pipe->output_num++] = video; mutex_lock(&mdev->graph_mutex); + ret = media_entity_graph_walk_init(&graph, entity->graph_obj.mdev); + if (ret) { + mutex_unlock(&video->lock); + return -ENOMEM; + } media_entity_graph_walk_start(&graph, entity); while ((entity = media_entity_graph_walk_next(&graph))) { if (entity == &video->video_dev.entity) @@ -156,7 +162,10 @@ static void vpfe_prepare_pipeline(struct vpfe_video_device *video) else pipe->outputs[pipe->output_num++] = far_end; } + media_entity_graph_walk_cleanup(&graph); mutex_unlock(&mdev->graph_mutex); + + return 0; } /* update pipe state selected by user */ @@ -165,7 +174,9 @@ static int vpfe_update_pipe_state(struct vpfe_video_device *video) struct vpfe_pipeline *pipe = &video->pipe; int ret; - vpfe_prepare_pipeline(video); + ret = vpfe_prepare_pipeline(video); + if (ret) + return ret; /* Find out if there is any input video if yes, it is single shot. @@ -276,11 +287,10 @@ static int vpfe_video_validate_pipeline(struct vpfe_pipeline *pipe) */ static int vpfe_pipeline_enable(struct vpfe_pipeline *pipe) { - struct media_entity_graph graph; struct media_entity *entity; struct v4l2_subdev *subdev; struct media_device *mdev; - int ret = 0; + int ret; if (pipe->state == VPFE_PIPELINE_STREAM_CONTINUOUS) entity = vpfe_get_input_entity(pipe->outputs[0]); @@ -289,8 +299,12 @@ static int vpfe_pipeline_enable(struct vpfe_pipeline *pipe) mdev = entity->graph_obj.mdev; mutex_lock(&mdev->graph_mutex); - media_entity_graph_walk_start(&graph, entity); - while ((entity = media_entity_graph_walk_next(&graph))) { + ret = media_entity_graph_walk_init(&pipe->graph, + entity->graph_obj.mdev); + if (ret) + goto out; + media_entity_graph_walk_start(&pipe->graph, entity); + while ((entity = media_entity_graph_walk_next(&pipe->graph))) { if (!is_media_entity_v4l2_subdev(entity)) continue; @@ -299,6 +313,9 @@ static int vpfe_pipeline_enable(struct vpfe_pipeline *pipe) if (ret < 0 && ret != -ENOIOCTLCMD) break; } +out: + if (ret) + media_entity_graph_walk_cleanup(&pipe->graph); mutex_unlock(&mdev->graph_mutex); return ret; } @@ -316,7 +333,6 @@ static int vpfe_pipeline_enable(struct vpfe_pipeline *pipe) */ static int vpfe_pipeline_disable(struct vpfe_pipeline *pipe) { - struct media_entity_graph graph; struct media_entity *entity; struct v4l2_subdev *subdev; struct media_device *mdev; @@ -329,9 +345,9 @@ static int vpfe_pipeline_disable(struct vpfe_pipeline *pipe) mdev = entity->graph_obj.mdev; mutex_lock(&mdev->graph_mutex); - media_entity_graph_walk_start(&graph, entity); + media_entity_graph_walk_start(&pipe->graph, entity); - while ((entity = media_entity_graph_walk_next(&graph))) { + while ((entity = media_entity_graph_walk_next(&pipe->graph))) { if (!is_media_entity_v4l2_subdev(entity)) continue; @@ -342,6 +358,7 @@ static int vpfe_pipeline_disable(struct vpfe_pipeline *pipe) } mutex_unlock(&mdev->graph_mutex); + media_entity_graph_walk_cleanup(&pipe->graph); return ret ? -ETIMEDOUT : 0; } diff --git a/drivers/staging/media/davinci_vpfe/vpfe_video.h b/drivers/staging/media/davinci_vpfe/vpfe_video.h index 673cefe3ef61f1..653334d537d3ba 100644 --- a/drivers/staging/media/davinci_vpfe/vpfe_video.h +++ b/drivers/staging/media/davinci_vpfe/vpfe_video.h @@ -52,6 +52,7 @@ enum vpfe_video_state { struct vpfe_pipeline { /* media pipeline */ struct media_pipeline *pipe; + struct media_entity_graph graph; /* state of the pipeline, continuous, * single-shot or stopped */ -- cgit 1.2.3-korg From 030e89ecab55b6e105e19fa830a7a7160237f19a Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 11:32:36 -0200 Subject: [media] media: Remove pre-allocated entity enumeration bitmap The bitmaps for entity enumerations used to be statically allocated. Now that the drivers have been converted to use the new interface which explicitly initialises the enum objects, drop the pre-allocated bitmaps. Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 16 +++++----------- include/media/media-entity.h | 9 ++------- 2 files changed, 7 insertions(+), 18 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 3cad525c2ac1fe..5bd6f88501e24a 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -81,14 +81,10 @@ static inline const char *intf_type(struct media_interface *intf) __must_check int __media_entity_enum_init(struct media_entity_enum *ent_enum, int idx_max) { - if (idx_max > MEDIA_ENTITY_ENUM_MAX_ID) { - ent_enum->bmap = kcalloc(DIV_ROUND_UP(idx_max, BITS_PER_LONG), - sizeof(long), GFP_KERNEL); - if (!ent_enum->bmap) - return -ENOMEM; - } else { - ent_enum->bmap = ent_enum->prealloc_bmap; - } + ent_enum->bmap = kcalloc(DIV_ROUND_UP(idx_max, BITS_PER_LONG), + sizeof(long), GFP_KERNEL); + if (!ent_enum->bmap) + return -ENOMEM; bitmap_zero(ent_enum->bmap, idx_max); ent_enum->idx_max = idx_max; @@ -104,9 +100,7 @@ EXPORT_SYMBOL_GPL(__media_entity_enum_init); */ void media_entity_enum_cleanup(struct media_entity_enum *ent_enum) { - if (ent_enum->bmap != ent_enum->prealloc_bmap) - kfree(ent_enum->bmap); - ent_enum->bmap = NULL; + kfree(ent_enum->bmap); } EXPORT_SYMBOL_GPL(media_entity_enum_cleanup); diff --git a/include/media/media-entity.h b/include/media/media-entity.h index a47a7c8a93cfdf..4d963a3684c96a 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -72,27 +72,22 @@ struct media_gobj { }; #define MEDIA_ENTITY_ENUM_MAX_DEPTH 16 -#define MEDIA_ENTITY_ENUM_MAX_ID 64 /* * The number of pads can't be bigger than the number of entities, * as the worse-case scenario is to have one entity linked up to - * MEDIA_ENTITY_ENUM_MAX_ID - 1 entities. + * 63 entities. */ -#define MEDIA_ENTITY_MAX_PADS (MEDIA_ENTITY_ENUM_MAX_ID - 1) +#define MEDIA_ENTITY_MAX_PADS 63 /** * struct media_entity_enum - An enumeration of media entities. * - * @prealloc_bmap: Pre-allocated space reserved for media entities if the - * total number of entities does not exceed - * MEDIA_ENTITY_ENUM_MAX_ID. * @bmap: Bit map in which each bit represents one entity at struct * media_entity->internal_idx. * @idx_max: Number of bits in bmap */ struct media_entity_enum { - DECLARE_BITMAP(prealloc_bmap, MEDIA_ENTITY_ENUM_MAX_ID); unsigned long *bmap; int idx_max; }; -- cgit 1.2.3-korg From 0798ce4a386d605af9ddbed724a8f4c8cccc1dab Mon Sep 17 00:00:00 2001 From: Sakari Ailus Date: Wed, 16 Dec 2015 11:32:37 -0200 Subject: [media] media: Move MEDIA_ENTITY_MAX_PADS from media-entity.h to media-entity.c This isn't really a part of any interface drivers are expected to use. In order to keep drivers from using it, hide it in media-entity.c. This was always an arbitrary number and should be removed in the long run. Signed-off-by: Sakari Ailus Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 5 +++++ include/media/media-entity.h | 7 ------- 2 files changed, 5 insertions(+), 7 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 5bd6f88501e24a..32a5f8cae72d4c 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -276,6 +276,11 @@ static struct media_entity *stack_pop(struct media_entity_graph *graph) #define link_top(en) ((en)->stack[(en)->top].link) #define stack_top(en) ((en)->stack[(en)->top].entity) +/* + * TODO: Get rid of this. + */ +#define MEDIA_ENTITY_MAX_PADS 63 + /** * media_entity_graph_walk_init - Allocate resources for graph walk * @graph: Media graph structure that will be used to walk the graph diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 4d963a3684c96a..f915ed62ac8134 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -73,13 +73,6 @@ struct media_gobj { #define MEDIA_ENTITY_ENUM_MAX_DEPTH 16 -/* - * The number of pads can't be bigger than the number of entities, - * as the worse-case scenario is to have one entity linked up to - * 63 entities. - */ -#define MEDIA_ENTITY_MAX_PADS 63 - /** * struct media_entity_enum - An enumeration of media entities. * -- cgit 1.2.3-korg From 92777994a52e6c1fe0a6156a8b49e83efea6fd2c Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 16 Dec 2015 13:53:04 -0200 Subject: [media] move documentation to the header files Some exported functions were still documented at the .c file, instead of documenting at the .h one. Move the documentation to the right place, as we only use headers at media device-drivers.xml DocBook. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 27 --------------------------- drivers/media/media-entity.c | 13 ------------- include/media/media-device.h | 6 ++++++ include/media/media-entity.h | 18 ++++++++++++++++-- 4 files changed, 22 insertions(+), 42 deletions(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index ce97f8f196f3b8..fd67b34dcda306 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -577,13 +577,6 @@ int __must_check media_device_register_entity(struct media_device *mdev, } EXPORT_SYMBOL_GPL(media_device_register_entity); -/** - * media_device_unregister_entity - Unregister an entity - * @entity: The entity - * - * If the entity has never been registered this function will return - * immediately. - */ static void __media_device_unregister_entity(struct media_entity *entity) { struct media_device *mdev = entity->graph_obj.mdev; @@ -627,7 +620,6 @@ void media_device_unregister_entity(struct media_entity *entity) } EXPORT_SYMBOL_GPL(media_device_unregister_entity); - /** * media_device_init() - initialize a media device * @mdev: The media device @@ -652,11 +644,6 @@ void media_device_init(struct media_device *mdev) } EXPORT_SYMBOL_GPL(media_device_init); -/** - * media_device_cleanup() - Cleanup a media device - * @mdev: The media device - * - */ void media_device_cleanup(struct media_device *mdev) { ida_destroy(&mdev->entity_internal_idx); @@ -665,13 +652,6 @@ void media_device_cleanup(struct media_device *mdev) } EXPORT_SYMBOL_GPL(media_device_cleanup); -/** - * __media_device_register() - register a media device - * @mdev: The media device - * @owner: The module owner - * - * returns zero on success or a negative error code. - */ int __must_check __media_device_register(struct media_device *mdev, struct module *owner) { @@ -701,13 +681,6 @@ int __must_check __media_device_register(struct media_device *mdev, } EXPORT_SYMBOL_GPL(__media_device_register); -/** - * media_device_unregister - unregister a media device - * @mdev: The media device - * - * It is safe to call this function on an unregistered - * (but initialised) media device. - */ void media_device_unregister(struct media_device *mdev) { struct media_entity *entity; diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 32a5f8cae72d4c..a2d28162213eac 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -70,14 +70,6 @@ static inline const char *intf_type(struct media_interface *intf) } }; -/** - * __media_entity_enum_init - Initialise an entity enumeration - * - * @ent_enum: Entity enumeration to be initialised - * @idx_max: Maximum number of entities in the enumeration - * - * Returns zero on success or a negative error code. - */ __must_check int __media_entity_enum_init(struct media_entity_enum *ent_enum, int idx_max) { @@ -93,11 +85,6 @@ __must_check int __media_entity_enum_init(struct media_entity_enum *ent_enum, } EXPORT_SYMBOL_GPL(__media_entity_enum_init); -/** - * media_entity_enum_cleanup - Release resources of an entity enumeration - * - * @e: Entity enumeration to be released - */ void media_entity_enum_cleanup(struct media_entity_enum *ent_enum) { kfree(ent_enum->bmap); diff --git a/include/media/media-device.h b/include/media/media-device.h index da4e12ca259c1b..706afdb22d0d56 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -428,6 +428,8 @@ void media_device_cleanup(struct media_device *mdev); * a sysfs attribute. * * Unregistering a media device that hasn't been registered is *NOT* safe. + * + * Return: returns zero on success or a negative error code. */ int __must_check __media_device_register(struct media_device *mdev, struct module *owner); @@ -437,6 +439,10 @@ int __must_check __media_device_register(struct media_device *mdev, * __media_device_unregister() - Unegisters a media device element * * @mdev: pointer to struct &media_device + * + * + * It is safe to call this function on an unregistered (but initialised) + * media device. */ void media_device_unregister(struct media_device *mdev); diff --git a/include/media/media-entity.h b/include/media/media-entity.h index f915ed62ac8134..c4aaeb85229c1d 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -370,9 +370,23 @@ static inline bool is_media_entity_v4l2_subdev(struct media_entity *entity) } } +/** + * __media_entity_enum_init - Initialise an entity enumeration + * + * @ent_enum: Entity enumeration to be initialised + * @idx_max: Maximum number of entities in the enumeration + * + * Return: Returns zero on success or a negative error code. + */ __must_check int __media_entity_enum_init(struct media_entity_enum *ent_enum, int idx_max); -void media_entity_enum_cleanup(struct media_entity_enum *e); + +/** + * media_entity_enum_cleanup - Release resources of an entity enumeration + * + * @ent_enum: Entity enumeration to be released + */ +void media_entity_enum_cleanup(struct media_entity_enum *ent_enum); /** * media_entity_enum_zero - Clear the entire enum @@ -847,6 +861,7 @@ void media_remove_intf_link(struct media_link *link); * Note: this is an unlocked version of media_remove_intf_links(). */ void __media_remove_intf_links(struct media_interface *intf); + /** * media_remove_intf_links() - remove all links associated with an interface * @@ -861,7 +876,6 @@ void __media_remove_intf_links(struct media_interface *intf); */ void media_remove_intf_links(struct media_interface *intf); - #define media_entity_call(entity, operation, args...) \ (((entity)->ops && (entity)->ops->operation) ? \ (entity)->ops->operation((entity) , ##args) : -ENOIOCTLCMD) -- cgit 1.2.3-korg From aa360d3de3e5c8824d48e6e273d93ee69fb53cdf Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 16 Dec 2015 13:56:14 -0200 Subject: [media] DocBook: document media_entity_graph_walk_cleanup() This function was added recently, but weren't documented. Add documentation for it. Signed-off-by: Mauro Carvalho Chehab --- include/media/media-entity.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/media/media-entity.h b/include/media/media-entity.h index c4aaeb85229c1d..f90ff56888d4b1 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -705,6 +705,12 @@ struct media_entity *media_entity_get(struct media_entity *entity); __must_check int media_entity_graph_walk_init( struct media_entity_graph *graph, struct media_device *mdev); + +/** + * media_entity_graph_walk_cleanup - Release resources used by graph walk. + * + * @graph: Media graph structure that will be used to walk the graph + */ void media_entity_graph_walk_cleanup(struct media_entity_graph *graph); /** -- cgit 1.2.3-korg From 03e493388415df701d4b9e362021a83529018a3b Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 16 Dec 2015 13:58:31 -0200 Subject: [media] media-entity.h fix documentation for several parameters Several parameters added by the media_ent_enum patches were declared with wrong argument names: include/media/media-device.h:333: warning: No description found for parameter 'entity_internal_idx_max' include/media/media-device.h:354: warning: No description found for parameter 'ent_enum' include/media/media-device.h:354: warning: Excess function parameter 'e' description in 'media_entity_enum_init' include/media/media-device.h:333: warning: No description found for parameter 'entity_internal_idx_max' include/media/media-device.h:354: warning: No description found for parameter 'ent_enum' include/media/media-device.h:354: warning: Excess function parameter 'e' description in 'media_entity_enum_init' include/media/media-entity.h:397: warning: No description found for parameter 'ent_enum' include/media/media-entity.h:397: warning: Excess function parameter 'e' description in 'media_entity_enum_zero' include/media/media-entity.h:409: warning: No description found for parameter 'ent_enum' include/media/media-entity.h:409: warning: Excess function parameter 'e' description in 'media_entity_enum_set' include/media/media-entity.h:424: warning: No description found for parameter 'ent_enum' include/media/media-entity.h:424: warning: Excess function parameter 'e' description in 'media_entity_enum_clear' include/media/media-entity.h:441: warning: No description found for parameter 'ent_enum' include/media/media-entity.h:441: warning: Excess function parameter 'e' description in 'media_entity_enum_test' include/media/media-entity.h:458: warning: No description found for parameter 'ent_enum' include/media/media-entity.h:458: warning: Excess function parameter 'e' description in 'media_entity_enum_test_and_set' include/media/media-entity.h:474: warning: No description found for parameter 'ent_enum' include/media/media-entity.h:474: warning: Excess function parameter 'e' description in 'media_entity_enum_empty' include/media/media-entity.h:474: warning: Excess function parameter 'entity' description in 'media_entity_enum_empty' include/media/media-entity.h:489: warning: No description found for parameter 'ent_enum1' include/media/media-entity.h:489: warning: No description found for parameter 'ent_enum2' include/media/media-entity.h:489: warning: Excess function parameter 'e' description in 'media_entity_enum_intersects' include/media/media-entity.h:489: warning: Excess function parameter 'f' description in 'media_entity_enum_intersects' Fix them. Signed-off-by: Mauro Carvalho Chehab --- include/media/media-device.h | 6 ++++-- include/media/media-entity.h | 24 ++++++++++++------------ 2 files changed, 16 insertions(+), 14 deletions(-) diff --git a/include/media/media-device.h b/include/media/media-device.h index 706afdb22d0d56..0dc67f2c2d0a8c 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -279,7 +279,9 @@ struct device; * @pad_id: Unique ID used on the last pad registered * @link_id: Unique ID used on the last link registered * @intf_devnode_id: Unique ID used on the last interface devnode registered - * @entity_internal_idx: Allocated internal entity indices + * @entity_internal_idx: Unique internal entity ID used by the graph traversal + * algorithms + * @entity_internal_idx_max: Allocated internal entity indices * @entities: List of registered entities * @interfaces: List of registered interfaces * @pads: List of registered pads @@ -344,7 +346,7 @@ struct media_device { /** * media_entity_enum_init - Initialise an entity enumeration * - * @e: Entity enumeration to be initialised + * @ent_enum: Entity enumeration to be initialised * @mdev: The related media device * * Returns zero on success or a negative error code. diff --git a/include/media/media-entity.h b/include/media/media-entity.h index f90ff56888d4b1..855b47df6ed54d 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -391,7 +391,7 @@ void media_entity_enum_cleanup(struct media_entity_enum *ent_enum); /** * media_entity_enum_zero - Clear the entire enum * - * @e: Entity enumeration to be cleared + * @ent_enum: Entity enumeration to be cleared */ static inline void media_entity_enum_zero(struct media_entity_enum *ent_enum) { @@ -401,7 +401,7 @@ static inline void media_entity_enum_zero(struct media_entity_enum *ent_enum) /** * media_entity_enum_set - Mark a single entity in the enum * - * @e: Entity enumeration + * @ent_enum: Entity enumeration * @entity: Entity to be marked */ static inline void media_entity_enum_set(struct media_entity_enum *ent_enum, @@ -416,7 +416,7 @@ static inline void media_entity_enum_set(struct media_entity_enum *ent_enum, /** * media_entity_enum_clear - Unmark a single entity in the enum * - * @e: Entity enumeration + * @ent_enum: Entity enumeration * @entity: Entity to be unmarked */ static inline void media_entity_enum_clear(struct media_entity_enum *ent_enum, @@ -431,7 +431,7 @@ static inline void media_entity_enum_clear(struct media_entity_enum *ent_enum, /** * media_entity_enum_test - Test whether the entity is marked * - * @e: Entity enumeration + * @ent_enum: Entity enumeration * @entity: Entity to be tested * * Returns true if the entity was marked. @@ -448,13 +448,14 @@ static inline bool media_entity_enum_test(struct media_entity_enum *ent_enum, /** * media_entity_enum_test - Test whether the entity is marked, and mark it * - * @e: Entity enumeration + * @ent_enum: Entity enumeration * @entity: Entity to be tested * * Returns true if the entity was marked, and mark it before doing so. */ -static inline bool media_entity_enum_test_and_set( - struct media_entity_enum *ent_enum, struct media_entity *entity) +static inline bool +media_entity_enum_test_and_set(struct media_entity_enum *ent_enum, + struct media_entity *entity) { if (WARN_ON(entity->internal_idx >= ent_enum->idx_max)) return true; @@ -463,10 +464,9 @@ static inline bool media_entity_enum_test_and_set( } /** - * media_entity_enum_test - Test whether the entire enum is empty + * media_entity_enum_empty - Test whether the entire enum is empty * - * @e: Entity enumeration - * @entity: Entity to be tested + * @ent_enum: Entity enumeration * * Returns true if the entity was marked. */ @@ -478,8 +478,8 @@ static inline bool media_entity_enum_empty(struct media_entity_enum *ent_enum) /** * media_entity_enum_intersects - Test whether two enums intersect * - * @e: First entity enumeration - * @f: Second entity enumeration + * @ent_enum1: First entity enumeration + * @ent_enum2: Second entity enumeration * * Returns true if entity enumerations e and f intersect, otherwise false. */ -- cgit 1.2.3-korg From 05b3b77cbbb01180b681bc9211f3d471123809ca Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 16 Dec 2015 14:28:01 -0200 Subject: [media] media-device.h: use just one u32 counter for object ID Instead of using one u32 counter per type for object IDs, use just one counter. With such change, it makes sense to simplify the debug logs too. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 35 +++++++++++++++-------------------- include/media/media-device.h | 10 ++-------- include/media/media-entity.h | 21 ++++++++++----------- 3 files changed, 27 insertions(+), 39 deletions(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index a2d28162213eac..f63be23e6ed471 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -106,8 +106,8 @@ static void dev_dbg_obj(const char *event_name, struct media_gobj *gobj) switch (media_type(gobj)) { case MEDIA_GRAPH_ENTITY: dev_dbg(gobj->mdev->dev, - "%s: id 0x%08x entity#%d: '%s'\n", - event_name, gobj->id, media_localid(gobj), + "%s id %u: entity '%s'\n", + event_name, media_id(gobj), gobj_to_entity(gobj)->name); break; case MEDIA_GRAPH_LINK: @@ -115,14 +115,12 @@ static void dev_dbg_obj(const char *event_name, struct media_gobj *gobj) struct media_link *link = gobj_to_link(gobj); dev_dbg(gobj->mdev->dev, - "%s: id 0x%08x link#%d: %s#%d ==> %s#%d\n", - event_name, gobj->id, media_localid(gobj), - - gobj_type(media_type(link->gobj0)), - media_localid(link->gobj0), - - gobj_type(media_type(link->gobj1)), - media_localid(link->gobj1)); + "%s id %u: %s link id %u ==> id %u\n", + event_name, media_id(gobj), + media_type(link->gobj0) == MEDIA_GRAPH_PAD ? + "data" : "interface", + media_id(link->gobj0), + media_id(link->gobj1)); break; } case MEDIA_GRAPH_PAD: @@ -130,11 +128,10 @@ static void dev_dbg_obj(const char *event_name, struct media_gobj *gobj) struct media_pad *pad = gobj_to_pad(gobj); dev_dbg(gobj->mdev->dev, - "%s: id 0x%08x %s%spad#%d: '%s':%d\n", - event_name, gobj->id, - pad->flags & MEDIA_PAD_FL_SINK ? " sink " : "", + "%s id %u: %s%spad '%s':%d\n", + event_name, media_id(gobj), + pad->flags & MEDIA_PAD_FL_SINK ? "sink " : "", pad->flags & MEDIA_PAD_FL_SOURCE ? "source " : "", - media_localid(gobj), pad->entity->name, pad->index); break; } @@ -144,8 +141,8 @@ static void dev_dbg_obj(const char *event_name, struct media_gobj *gobj) struct media_intf_devnode *devnode = intf_to_devnode(intf); dev_dbg(gobj->mdev->dev, - "%s: id 0x%08x intf_devnode#%d: %s - major: %d, minor: %d\n", - event_name, gobj->id, media_localid(gobj), + "%s id %u: intf_devnode %s - major: %d, minor: %d\n", + event_name, media_id(gobj), intf_type(intf), devnode->major, devnode->minor); break; @@ -163,21 +160,19 @@ void media_gobj_create(struct media_device *mdev, gobj->mdev = mdev; /* Create a per-type unique object ID */ + gobj->id = media_gobj_gen_id(type, ++mdev->id); + switch (type) { case MEDIA_GRAPH_ENTITY: - gobj->id = media_gobj_gen_id(type, ++mdev->entity_id); list_add_tail(&gobj->list, &mdev->entities); break; case MEDIA_GRAPH_PAD: - gobj->id = media_gobj_gen_id(type, ++mdev->pad_id); list_add_tail(&gobj->list, &mdev->pads); break; case MEDIA_GRAPH_LINK: - gobj->id = media_gobj_gen_id(type, ++mdev->link_id); list_add_tail(&gobj->list, &mdev->links); break; case MEDIA_GRAPH_INTF_DEVNODE: - gobj->id = media_gobj_gen_id(type, ++mdev->intf_devnode_id); list_add_tail(&gobj->list, &mdev->interfaces); break; } diff --git a/include/media/media-device.h b/include/media/media-device.h index 0dc67f2c2d0a8c..d3855898c3fc67 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -275,10 +275,7 @@ struct device; * @driver_version: Device driver version * @topology_version: Monotonic counter for storing the version of the graph * topology. Should be incremented each time the topology changes. - * @entity_id: Unique ID used on the last entity registered - * @pad_id: Unique ID used on the last pad registered - * @link_id: Unique ID used on the last link registered - * @intf_devnode_id: Unique ID used on the last interface devnode registered + * @id: Unique ID used on the last registered graph object * @entity_internal_idx: Unique internal entity ID used by the graph traversal * algorithms * @entity_internal_idx_max: Allocated internal entity indices @@ -313,10 +310,7 @@ struct media_device { u32 topology_version; - u32 entity_id; - u32 pad_id; - u32 link_id; - u32 intf_devnode_id; + u32 id; struct ida entity_internal_idx; int entity_internal_idx_max; diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 855b47df6ed54d..54be1496d542d7 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -47,8 +47,8 @@ enum media_gobj_type { }; #define MEDIA_BITS_PER_TYPE 8 -#define MEDIA_BITS_PER_LOCAL_ID (32 - MEDIA_BITS_PER_TYPE) -#define MEDIA_LOCAL_ID_MASK GENMASK(MEDIA_BITS_PER_LOCAL_ID - 1, 0) +#define MEDIA_BITS_PER_ID (32 - MEDIA_BITS_PER_TYPE) +#define MEDIA_ID_MASK GENMASK_ULL(MEDIA_BITS_PER_ID - 1, 0) /* Structs to represent the objects that belong to a media graph */ @@ -58,9 +58,8 @@ enum media_gobj_type { * @mdev: Pointer to the struct media_device that owns the object * @id: Non-zero object ID identifier. The ID should be unique * inside a media_device, as it is composed by - * MEDIA_BITS_PER_TYPE to store the type plus - * MEDIA_BITS_PER_LOCAL_ID to store a per-type ID - * (called as "local ID"). + * %MEDIA_BITS_PER_TYPE to store the type plus + * %MEDIA_BITS_PER_ID to store the ID * @list: List entry stored in one of the per-type mdev object lists * * All objects on the media graph should have this struct embedded @@ -299,20 +298,20 @@ static inline u32 media_entity_id(struct media_entity *entity) */ static inline enum media_gobj_type media_type(struct media_gobj *gobj) { - return gobj->id >> MEDIA_BITS_PER_LOCAL_ID; + return gobj->id >> MEDIA_BITS_PER_ID; } -static inline u32 media_localid(struct media_gobj *gobj) +static inline u32 media_id(struct media_gobj *gobj) { - return gobj->id & MEDIA_LOCAL_ID_MASK; + return gobj->id & MEDIA_ID_MASK; } -static inline u32 media_gobj_gen_id(enum media_gobj_type type, u32 local_id) +static inline u32 media_gobj_gen_id(enum media_gobj_type type, u64 local_id) { u32 id; - id = type << MEDIA_BITS_PER_LOCAL_ID; - id |= local_id & MEDIA_LOCAL_ID_MASK; + id = type << MEDIA_BITS_PER_ID; + id |= local_id & MEDIA_ID_MASK; return id; } -- cgit 1.2.3-korg From 630c0e80c984c0a9a325430d62770fd49f93f9b9 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 16 Dec 2015 15:15:18 -0200 Subject: [media] media-entity.h: document the remaining functions There are two ancillary functions that are missing comments. While those are used only internally at media-entity.c, document them, for completeness. Signed-off-by: Mauro Carvalho Chehab --- include/media/media-entity.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 54be1496d542d7..79dd81fd463e80 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -301,11 +301,22 @@ static inline enum media_gobj_type media_type(struct media_gobj *gobj) return gobj->id >> MEDIA_BITS_PER_ID; } +/** + * media_id() - return the media object ID + * + * @gobj: pointer to the media graph object + */ static inline u32 media_id(struct media_gobj *gobj) { return gobj->id & MEDIA_ID_MASK; } +/** + * media_gobj_gen_id() - encapsulates type and ID on at the object ID + * + * @type: object type as define at enum &media_gobj_type. + * @local_id: next ID, from struct &media_device.@id. + */ static inline u32 media_gobj_gen_id(enum media_gobj_type type, u64 local_id) { u32 id; -- cgit 1.2.3-korg From 430a672c83c3e2e9a96c777a874f345c8d21f929 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 16 Dec 2015 15:18:25 -0200 Subject: [media] media-entity: increase max number of PADs The DVB drivers may have 257 PADs. Get the next power of two that would accomodate that amount. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index f63be23e6ed471..eb38bc35320a8d 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -261,7 +261,7 @@ static struct media_entity *stack_pop(struct media_entity_graph *graph) /* * TODO: Get rid of this. */ -#define MEDIA_ENTITY_MAX_PADS 63 +#define MEDIA_ENTITY_MAX_PADS 512 /** * media_entity_graph_walk_init - Allocate resources for graph walk -- cgit 1.2.3-korg From ba0dd729bfc09e51af238a630deba70205442afe Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 16 Dec 2015 15:33:54 -0200 Subject: [media] media-entity: don't sleep at media_device_register_entity() media_device_register_entity() is protected by a spin_lock. Calling ida_pre_get() with GFP_KERNEL may put it to sleep, with is a bad idea and causes this warning: [ 8812.397195] BUG: sleeping function called from invalid context at mm/slub.c:1287 [ 8812.397203] in_atomic(): 1, irqs_disabled(): 0, pid: 15179, name: modprobe [ 8812.397207] INFO: lockdep is turned off. [ 8812.397213] CPU: 2 PID: 15179 Comm: modprobe Tainted: G B 4.4.0-rc2+ #41 [ 8812.397218] Hardware name: /NUC5i7RYB, BIOS RYBDWi35.86A.0350.2015.0812.1722 08/12/2015 [ 8812.397222] 0000000000000000 ffff880314c77268 ffffffff818f8ba7 ffff8803b17dde00 [ 8812.397232] ffff880314c77290 ffffffff811c2ee5 ffff8803b17dde00 ffffffff8284dbc9 [ 8812.397241] 0000000000000507 ffff880314c772d0 ffffffff811c30d5 0000000041b58ab3 [ 8812.397250] Call Trace: [ 8812.397258] [] dump_stack+0x4b/0x64 [ 8812.397265] [] ___might_sleep+0x245/0x3a0 [ 8812.397270] [] __might_sleep+0x95/0x1a0 [ 8812.397276] [] ? ida_pre_get+0x113/0x250 [ 8812.397282] [] kmem_cache_alloc+0x197/0x250 [ 8812.397288] [] ida_pre_get+0x113/0x250 [ 8812.397293] [] ida_simple_get+0xa5/0x170 [ 8812.397298] [] ? ida_pre_get+0x250/0x250 [ 8812.397306] [] media_device_register_entity+0x171/0x420 [media] [ 8812.397318] [] v4l2_device_register_subdev+0x34f/0x640 [videodev] [ 8812.397324] [] v4l2_i2c_new_subdev_board+0x12a/0x250 [v4l2_common] [ 8812.397330] [] v4l2_i2c_new_subdev+0xd7/0x110 [v4l2_common] [ 8812.397337] [] ? v4l2_i2c_new_subdev_board+0x250/0x250 [v4l2_common] [ 8812.397347] [] au0828_card_analog_fe_setup+0x2e6/0x3f0 [au0828] [ 8812.397352] [] ? power_down+0xc4/0xc4 [ 8812.397361] [] ? au0828_tuner_callback+0x160/0x160 [au0828] [ 8812.397370] [] au0828_card_setup+0x11f/0x340 [au0828] [ 8812.397378] [] ? au0828_card_analog_fe_setup+0x3f0/0x3f0 [au0828] [ 8812.397384] [] ? msleep+0x7b/0xc0 [ 8812.397393] [] au0828_usb_probe+0x679/0xcf0 [au0828] [ 8812.397399] [] usb_probe_interface+0x45d/0x940 [ 8812.397406] [] driver_probe_device+0x454/0xd90 [ 8812.397411] [] ? driver_probe_device+0xd90/0xd90 [ 8812.397417] [] ? driver_probe_device+0xd90/0xd90 [ 8812.397422] [] __driver_attach+0x121/0x160 [ 8812.397427] [] bus_for_each_dev+0x11f/0x1a0 [ 8812.397433] [] ? subsys_dev_iter_exit+0x10/0x10 [ 8812.397439] [] ? _raw_spin_unlock+0x27/0x40 [ 8812.397445] [] driver_attach+0x3d/0x50 [ 8812.397450] [] bus_add_driver+0x4c9/0x770 [ 8812.397456] [] driver_register+0x18c/0x3b0 [ 8812.397462] [] ? __raw_spin_lock_init+0x32/0x100 [ 8812.397468] [] usb_register_driver+0x1f8/0x440 [ 8812.397473] [] ? 0xffffffffa0208000 [ 8812.397481] [] au0828_init+0xb7/0x1000 [au0828] [ 8812.397486] [] do_one_initcall+0x141/0x300 [ 8812.397492] [] ? try_to_run_init_process+0x40/0x40 [ 8812.397497] [] ? trace_hardirqs_on_caller+0x16/0x590 [ 8812.397502] [] ? kasan_unpoison_shadow+0x36/0x50 [ 8812.397507] [] ? kasan_unpoison_shadow+0x36/0x50 [ 8812.397512] [] ? kasan_unpoison_shadow+0x36/0x50 [ 8812.397517] [] ? __asan_register_globals+0x87/0xa0 [ 8812.397524] [] do_init_module+0x1d0/0x5a4 [ 8812.397530] [] load_module+0x6648/0x9d70 [ 8812.397535] [] ? symbol_put_addr+0x50/0x50 [ 8812.397546] [] ? module_frob_arch_sections+0x20/0x20 [ 8812.397552] [] ? open_exec+0x50/0x50 [ 8812.397559] [] ? ns_capable+0x5b/0xd0 [ 8812.397565] [] SyS_finit_module+0x108/0x130 [ 8812.397571] [] ? SyS_init_module+0x1f0/0x1f0 [ 8812.397576] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 8812.397582] [] entry_SYSCALL_64_fastpath+0x16/0x7a Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-device.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index fd67b34dcda306..4d1c13de494bfb 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -537,6 +537,7 @@ int __must_check media_device_register_entity(struct media_device *mdev, struct media_entity *entity) { unsigned int i; + int ret; if (entity->function == MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN || entity->function == MEDIA_ENT_F_UNKNOWN) @@ -551,13 +552,16 @@ int __must_check media_device_register_entity(struct media_device *mdev, entity->num_links = 0; entity->num_backlinks = 0; + if (!ida_pre_get(&mdev->entity_internal_idx, GFP_KERNEL)) + return -ENOMEM; + spin_lock(&mdev->lock); - entity->internal_idx = ida_simple_get(&mdev->entity_internal_idx, 1, 0, - GFP_KERNEL); - if (entity->internal_idx < 0) { + ret = ida_get_new_above(&mdev->entity_internal_idx, 1, + &entity->internal_idx); + if (ret < 0) { spin_unlock(&mdev->lock); - return entity->internal_idx; + return ret; } mdev->entity_internal_idx_max = -- cgit 1.2.3-korg From 7c9d6731acf2816cd94e6c51f02ac8348dc7bb7e Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 17 Dec 2015 09:07:38 -0200 Subject: [media] uapi/media.h: Use u32 for the number of graph objects While we need to keep a u64 alignment to avoid compat32 issues, having the number of entities/pads/links/interfaces represented by an u64 is incoherent with the ID number, with is an u32. In order to make it coherent, change those quantities to u32. Signed-off-by: Mauro Carvalho Chehab --- include/uapi/linux/media.h | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h index cacfceb0d81d86..5dbb208e5451ac 100644 --- a/include/uapi/linux/media.h +++ b/include/uapi/linux/media.h @@ -330,16 +330,20 @@ struct media_v2_link { struct media_v2_topology { __u64 topology_version; - __u64 num_entities; + __u32 num_entities; + __u32 reserved1; __u64 ptr_entities; - __u64 num_interfaces; + __u32 num_interfaces; + __u32 reserved2; __u64 ptr_interfaces; - __u64 num_pads; + __u32 num_pads; + __u32 reserved3; __u64 ptr_pads; - __u64 num_links; + __u32 num_links; + __u32 reserved4; __u64 ptr_links; }; -- cgit 1.2.3-korg From 2e7508e40f6391762499d802226d8a31b0ea3944 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 28 Dec 2015 09:24:23 -0200 Subject: [media] call media_device_init() before registering the V4L2 device Currently, v4l2_device_register() doesn't use the media_device struct. So, calling media_device_init() could be called either before or after v4l2_device_register(). Yet, it is a good practice to initialize everything before calling the register functions. Also, the other drivers call media_device_init() before registering the V4L2 device. So, move the call for media_device_init() to happen earlier on exynos4-is and s3c-camif. This is just a cleanup patch. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/exynos4-is/media-dev.c | 4 ++-- drivers/media/platform/s3c-camif/camif-core.c | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/media/platform/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c index f6b391e795c654..f3b2dd30ec7769 100644 --- a/drivers/media/platform/exynos4-is/media-dev.c +++ b/drivers/media/platform/exynos4-is/media-dev.c @@ -1356,14 +1356,14 @@ static int fimc_md_probe(struct platform_device *pdev) fmd->use_isp = fimc_md_is_isp_available(dev->of_node); fmd->user_subdev_api = true; + media_device_init(&fmd->media_dev); + ret = v4l2_device_register(dev, &fmd->v4l2_dev); if (ret < 0) { v4l2_err(v4l2_dev, "Failed to register v4l2_device: %d\n", ret); return ret; } - media_device_init(&fmd->media_dev); - ret = fimc_md_get_clocks(fmd); if (ret) goto err_md; diff --git a/drivers/media/platform/s3c-camif/camif-core.c b/drivers/media/platform/s3c-camif/camif-core.c index ea02b7ef2119ba..0b44b9accf5079 100644 --- a/drivers/media/platform/s3c-camif/camif-core.c +++ b/drivers/media/platform/s3c-camif/camif-core.c @@ -324,12 +324,12 @@ static int camif_media_dev_init(struct camif_dev *camif) strlcpy(v4l2_dev->name, "s3c-camif", sizeof(v4l2_dev->name)); v4l2_dev->mdev = md; + media_device_init(md); + ret = v4l2_device_register(camif->dev, v4l2_dev); if (ret < 0) return ret; - media_device_init(md); - return ret; } -- cgit 1.2.3-korg From 0820eb5c5510b0a5c25a17c8be5e40156ace4991 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 28 Dec 2015 10:30:06 -0200 Subject: [media] dvbdev: remove two dead functions if !CONFIG_MEDIA_CONTROLLER_DVB Those functions are used only if CONFIG_MEDIA_CONTROLLER_DVB. Without that, if !CONFIG_MEDIA_CONTROLLER_DVB, it would produce two warnings: drivers/media/dvb-core/dvbdev.c:219:12: warning: 'dvb_create_tsout_entity' defined but not used [-Wunused-function] static int dvb_create_tsout_entity(struct dvb_device *dvbdev, ^ drivers/media/dvb-core/dvbdev.c:264:12: warning: 'dvb_create_media_entity' defined but not used [-Wunused-function] static int dvb_create_media_entity(struct dvb_device *dvbdev, ^ Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-core/dvbdev.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index b56e00817d3fa2..860dd7d06b601d 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -216,10 +216,10 @@ static void dvb_media_device_free(struct dvb_device *dvbdev) #endif } +#if defined(CONFIG_MEDIA_CONTROLLER_DVB) static int dvb_create_tsout_entity(struct dvb_device *dvbdev, const char *name, int npads) { -#if defined(CONFIG_MEDIA_CONTROLLER_DVB) int i, ret = 0; dvbdev->tsout_pads = kcalloc(npads, sizeof(*dvbdev->tsout_pads), @@ -254,7 +254,6 @@ static int dvb_create_tsout_entity(struct dvb_device *dvbdev, if (ret < 0) return ret; } -#endif return 0; } @@ -264,7 +263,6 @@ static int dvb_create_tsout_entity(struct dvb_device *dvbdev, static int dvb_create_media_entity(struct dvb_device *dvbdev, int type, int demux_sink_pads) { -#if defined(CONFIG_MEDIA_CONTROLLER_DVB) int i, ret, npads; switch (type) { @@ -352,9 +350,9 @@ static int dvb_create_media_entity(struct dvb_device *dvbdev, printk(KERN_DEBUG "%s: media entity '%s' registered.\n", __func__, dvbdev->entity->name); -#endif return 0; } +#endif static int dvb_register_media_device(struct dvb_device *dvbdev, int type, int minor, -- cgit 1.2.3-korg From 0230d60e4661d9ced6fb0b9a30f182ebdafbba7a Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 29 Dec 2015 11:52:23 -0200 Subject: [media] dvbdev: Add RF connector if needed Several pure digital TV devices have a frontend with the tuner integrated on it. Add the RF connector when dvb_create_media_graph() is called on such devices. Tested with siano and dvb_usb_mxl111sf drivers. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/common/siano/smsdvb-main.c | 2 +- drivers/media/dvb-core/dvbdev.c | 49 +++++++++++++++++++++++++++-- drivers/media/dvb-core/dvbdev.h | 20 ++++++++++-- drivers/media/usb/au0828/au0828-dvb.c | 2 +- drivers/media/usb/cx231xx/cx231xx-dvb.c | 2 +- drivers/media/usb/dvb-usb-v2/dvb_usb_core.c | 2 +- drivers/media/usb/dvb-usb/dvb-usb-dvb.c | 2 +- 7 files changed, 70 insertions(+), 9 deletions(-) diff --git a/drivers/media/common/siano/smsdvb-main.c b/drivers/media/common/siano/smsdvb-main.c index 8a1ea219243944..d31f468830cf6d 100644 --- a/drivers/media/common/siano/smsdvb-main.c +++ b/drivers/media/common/siano/smsdvb-main.c @@ -1184,7 +1184,7 @@ static int smsdvb_hotplug(struct smscore_device_t *coredev, if (smsdvb_debugfs_create(client) < 0) pr_info("failed to create debugfs node\n"); - rc = dvb_create_media_graph(&client->adapter); + rc = dvb_create_media_graph(&client->adapter, true); if (rc < 0) { pr_err("dvb_create_media_graph failed %d\n", rc); goto client_error; diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index 860dd7d06b601d..28e340583edee3 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -213,6 +213,13 @@ static void dvb_media_device_free(struct dvb_device *dvbdev) media_devnode_remove(dvbdev->intf_devnode); dvbdev->intf_devnode = NULL; } + + if (dvbdev->adapter->conn) { + media_device_unregister_entity(dvbdev->adapter->conn); + dvbdev->adapter->conn = NULL; + kfree(dvbdev->adapter->conn_pads); + dvbdev->adapter->conn_pads = NULL; + } #endif } @@ -559,16 +566,18 @@ static int dvb_create_io_intf_links(struct dvb_adapter *adap, return 0; } -int dvb_create_media_graph(struct dvb_adapter *adap) +int dvb_create_media_graph(struct dvb_adapter *adap, + bool create_rf_connector) { struct media_device *mdev = adap->mdev; - struct media_entity *entity, *tuner = NULL, *demod = NULL; + struct media_entity *entity, *tuner = NULL, *demod = NULL, *conn; struct media_entity *demux = NULL, *ca = NULL; struct media_link *link; struct media_interface *intf; unsigned demux_pad = 0; unsigned dvr_pad = 0; int ret; + static const char *connector_name = "Television"; if (!mdev) return 0; @@ -590,6 +599,42 @@ int dvb_create_media_graph(struct dvb_adapter *adap) } } + if (create_rf_connector) { + conn = kzalloc(sizeof(*conn), GFP_KERNEL); + if (!conn) + return -ENOMEM; + adap->conn = conn; + + adap->conn_pads = kcalloc(1, sizeof(*adap->conn_pads), + GFP_KERNEL); + if (!adap->conn_pads) + return -ENOMEM; + + conn->flags = MEDIA_ENT_FL_CONNECTOR; + conn->function = MEDIA_ENT_F_CONN_RF; + conn->name = connector_name; + adap->conn_pads->flags = MEDIA_PAD_FL_SOURCE; + + ret = media_entity_pads_init(conn, 1, adap->conn_pads); + if (ret) + return ret; + + ret = media_device_register_entity(mdev, conn); + if (ret) + return ret; + + if (!tuner) + ret = media_create_pad_link(conn, 0, + demod, 0, + MEDIA_LNK_FL_ENABLED); + else + ret = media_create_pad_link(conn, 0, + tuner, TUNER_PAD_RF_INPUT, + MEDIA_LNK_FL_ENABLED); + if (ret) + return ret; + } + if (tuner && demod) { ret = media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, demod, 0, MEDIA_LNK_FL_ENABLED); diff --git a/drivers/media/dvb-core/dvbdev.h b/drivers/media/dvb-core/dvbdev.h index abee18a402e1e4..b622d6a3b95e00 100644 --- a/drivers/media/dvb-core/dvbdev.h +++ b/drivers/media/dvb-core/dvbdev.h @@ -75,6 +75,9 @@ struct dvb_frontend; * used. * @mdev: pointer to struct media_device, used when the media * controller is used. + * @conn: RF connector. Used only if the device has no separate + * tuner. + * @conn_pads: pointer to struct media_pad associated with @conn; */ struct dvb_adapter { int num; @@ -94,6 +97,8 @@ struct dvb_adapter { #if defined(CONFIG_MEDIA_CONTROLLER_DVB) struct media_device *mdev; + struct media_entity *conn; + struct media_pad *conn_pads; #endif }; @@ -214,7 +219,16 @@ int dvb_register_device(struct dvb_adapter *adap, void dvb_unregister_device(struct dvb_device *dvbdev); #ifdef CONFIG_MEDIA_CONTROLLER_DVB -__must_check int dvb_create_media_graph(struct dvb_adapter *adap); +/** + * dvb_create_media_graph - Creates media graph for the Digital TV part of the + * device. + * + * @adap: pointer to struct dvb_adapter + * @create_rf_connector: if true, it creates the RF connector too + */ +__must_check int dvb_create_media_graph(struct dvb_adapter *adap, + bool create_rf_connector); + static inline void dvb_register_media_controller(struct dvb_adapter *adap, struct media_device *mdev) { @@ -222,7 +236,9 @@ static inline void dvb_register_media_controller(struct dvb_adapter *adap, } #else -static inline int dvb_create_media_graph(struct dvb_adapter *adap) +static inline +int dvb_create_media_graph(struct dvb_adapter *adap, + bool create_rf_connector) { return 0; }; diff --git a/drivers/media/usb/au0828/au0828-dvb.c b/drivers/media/usb/au0828/au0828-dvb.c index cd542b49a6c2bd..94363a3ba400a3 100644 --- a/drivers/media/usb/au0828/au0828-dvb.c +++ b/drivers/media/usb/au0828/au0828-dvb.c @@ -486,7 +486,7 @@ static int dvb_register(struct au0828_dev *dev) dvb->start_count = 0; dvb->stop_count = 0; - result = dvb_create_media_graph(&dvb->adapter); + result = dvb_create_media_graph(&dvb->adapter, false); if (result < 0) goto fail_create_graph; diff --git a/drivers/media/usb/cx231xx/cx231xx-dvb.c b/drivers/media/usb/cx231xx/cx231xx-dvb.c index b7552d20ebdb55..b8d5b2be92937c 100644 --- a/drivers/media/usb/cx231xx/cx231xx-dvb.c +++ b/drivers/media/usb/cx231xx/cx231xx-dvb.c @@ -551,7 +551,7 @@ static int register_dvb(struct cx231xx_dvb *dvb, /* register network adapter */ dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx); - result = dvb_create_media_graph(&dvb->adapter); + result = dvb_create_media_graph(&dvb->adapter, false); if (result < 0) goto fail_create_graph; diff --git a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c index 0fa2c45917b029..e8491f73c0d9a0 100644 --- a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c +++ b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c @@ -706,7 +706,7 @@ static int dvb_usbv2_adapter_frontend_init(struct dvb_usb_adapter *adap) } } - ret = dvb_create_media_graph(&adap->dvb_adap); + ret = dvb_create_media_graph(&adap->dvb_adap, true); if (ret < 0) goto err_dvb_unregister_frontend; diff --git a/drivers/media/usb/dvb-usb/dvb-usb-dvb.c b/drivers/media/usb/dvb-usb/dvb-usb-dvb.c index 241463ef631e00..9ddfcab268be9c 100644 --- a/drivers/media/usb/dvb-usb/dvb-usb-dvb.c +++ b/drivers/media/usb/dvb-usb/dvb-usb-dvb.c @@ -330,7 +330,7 @@ int dvb_usb_adapter_frontend_init(struct dvb_usb_adapter *adap) if (ret) return ret; - ret = dvb_create_media_graph(&adap->dvb_adap); + ret = dvb_create_media_graph(&adap->dvb_adap, true); if (ret) return ret; -- cgit 1.2.3-korg From 33c6853347c13b7cf8d11c12714cd855a84bc992 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Tue, 29 Dec 2015 16:45:21 -0200 Subject: [media] dvb-usb-v2: postpone removal of media_device We should not remove the media_device until its last usage, or we may have use after free troubles. So, move the per-adapter media_device removal to happen at the end of the adapter removal code. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/dvb-usb-v2/dvb_usb_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c index e8491f73c0d9a0..f0565bf3673e86 100644 --- a/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c +++ b/drivers/media/usb/dvb-usb-v2/dvb_usb_core.c @@ -542,7 +542,6 @@ static int dvb_usbv2_adapter_dvb_exit(struct dvb_usb_adapter *adap) adap->demux.dmx.close(&adap->demux.dmx); dvb_dmxdev_release(&adap->dmxdev); dvb_dmx_release(&adap->demux); - dvb_usbv2_media_device_unregister(adap); dvb_unregister_adapter(&adap->dvb_adap); } @@ -852,6 +851,7 @@ static int dvb_usbv2_adapter_exit(struct dvb_usb_device *d) dvb_usbv2_adapter_dvb_exit(&d->adapter[i]); dvb_usbv2_adapter_stream_exit(&d->adapter[i]); dvb_usbv2_adapter_frontend_exit(&d->adapter[i]); + dvb_usbv2_media_device_unregister(&d->adapter[i]); } } -- cgit 1.2.3-korg From b01cc9ce7c13e0463575332dfa3171727f706afb Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 30 Dec 2015 09:45:48 -0200 Subject: [media] media-entitiy: add a function to create multiple links Sometimes, it is desired to create 1:n and n:1 or even n:n links between different entities with the same function. This is actually needed to support DVB devices that have multiple frontends. While we could do a function like that internally at the DVB core, such function is generic enough to be at media-entity, and it could be useful on some other places. So, add such function. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/media-entity.c | 65 ++++++++++++++++++++++++++++++++++++++++++++ include/media/media-entity.h | 51 ++++++++++++++++++++++++++++++++++ 2 files changed, 116 insertions(+) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index eb38bc35320a8d..e89d85a7d31b56 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -625,6 +625,71 @@ media_create_pad_link(struct media_entity *source, u16 source_pad, } EXPORT_SYMBOL_GPL(media_create_pad_link); +int media_create_pad_links(const struct media_device *mdev, + const u32 source_function, + struct media_entity *source, + const u16 source_pad, + const u32 sink_function, + struct media_entity *sink, + const u16 sink_pad, + u32 flags, + const bool allow_both_undefined) +{ + struct media_entity *entity; + unsigned function; + int ret; + + /* Trivial case: 1:1 relation */ + if (source && sink) + return media_create_pad_link(source, source_pad, + sink, sink_pad, flags); + + /* Worse case scenario: n:n relation */ + if (!source && !sink) { + if (!allow_both_undefined) + return 0; + media_device_for_each_entity(source, mdev) { + if (source->function != source_function) + continue; + media_device_for_each_entity(sink, mdev) { + if (sink->function != sink_function) + continue; + ret = media_create_pad_link(source, source_pad, + sink, sink_pad, + flags); + if (ret) + return ret; + flags &= ~(MEDIA_LNK_FL_ENABLED | + MEDIA_LNK_FL_IMMUTABLE); + } + } + return 0; + } + + /* Handle 1:n and n:1 cases */ + if (source) + function = sink_function; + else + function = source_function; + + media_device_for_each_entity(entity, mdev) { + if (entity->function != function) + continue; + + if (source) + ret = media_create_pad_link(source, source_pad, + entity, sink_pad, flags); + else + ret = media_create_pad_link(entity, source_pad, + sink, sink_pad, flags); + if (ret) + return ret; + flags &= ~(MEDIA_LNK_FL_ENABLED | MEDIA_LNK_FL_IMMUTABLE); + } + return 0; +} +EXPORT_SYMBOL_GPL(media_create_pad_links); + void __media_entity_remove_links(struct media_entity *entity) { struct media_link *link, *tmp; diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 79dd81fd463e80..fe485d36798565 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -613,6 +613,57 @@ static inline void media_entity_cleanup(struct media_entity *entity) {}; __must_check int media_create_pad_link(struct media_entity *source, u16 source_pad, struct media_entity *sink, u16 sink_pad, u32 flags); + +/** + * media_create_pad_links() - creates a link between two entities. + * + * @mdev: Pointer to the media_device that contains the object + * @source_function: Function of the source entities. Used only if @source is + * NULL. + * @source: pointer to &media_entity of the source pad. If NULL, it will use + * all entities that matches the @sink_function. + * @source_pad: number of the source pad in the pads array + * @sink_function: Function of the sink entities. Used only if @sink is NULL. + * @sink: pointer to &media_entity of the sink pad. If NULL, it will use + * all entities that matches the @sink_function. + * @sink_pad: number of the sink pad in the pads array. + * @flags: Link flags, as defined in include/uapi/linux/media.h. + * @allow_both_undefined: if true, then both @source and @sink can be NULL. + * In such case, it will create a crossbar between all entities that + * matches @source_function to all entities that matches @sink_function. + * If false, it will return 0 and won't create any link if both @source + * and @sink are NULL. + * + * Valid values for flags: + * A %MEDIA_LNK_FL_ENABLED flag indicates that the link is enabled and can be + * used to transfer media data. If multiple links are created and this + * flag is passed as an argument, only the first created link will have + * this flag. + * + * A %MEDIA_LNK_FL_IMMUTABLE flag indicates that the link enabled state can't + * be modified at runtime. If %MEDIA_LNK_FL_IMMUTABLE is set, then + * %MEDIA_LNK_FL_ENABLED must also be set since an immutable link is + * always enabled. + * + * It is common for some devices to have multiple source and/or sink entities + * of the same type that should be linked. While media_create_pad_link() + * creates link by link, this function is meant to allow 1:n, n:1 and even + * cross-bar (n:n) links. + * + * NOTE: Before calling this function, media_entity_pads_init() and + * media_device_register_entity() should be called previously for the entities + * to be linked. + */ +int media_create_pad_links(const struct media_device *mdev, + const u32 source_function, + struct media_entity *source, + const u16 source_pad, + const u32 sink_function, + struct media_entity *sink, + const u16 sink_pad, + u32 flags, + const bool allow_both_undefined); + void __media_entity_remove_links(struct media_entity *entity); /** -- cgit 1.2.3-korg From a0cce2a05756c9308f59c0303afe2c199e0789b0 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 30 Dec 2015 10:11:53 -0200 Subject: [media] dvbdev: create links on devices with multiple frontends Devices like mxl111sf-based WinTV Aero-m have multiple frontends, all linked on the same demod. Currently, the dvb_create_graph() function is not smart enough to create multiple links. Fix it. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-core/dvbdev.c | 57 +++++++++++++++++++++++++++++++---------- drivers/media/dvb-core/dvbdev.h | 7 +++++ 2 files changed, 51 insertions(+), 13 deletions(-) diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c index 28e340583edee3..560450a0b32a5b 100644 --- a/drivers/media/dvb-core/dvbdev.c +++ b/drivers/media/dvb-core/dvbdev.c @@ -576,6 +576,7 @@ int dvb_create_media_graph(struct dvb_adapter *adap, struct media_interface *intf; unsigned demux_pad = 0; unsigned dvr_pad = 0; + unsigned ntuner = 0, ndemod = 0; int ret; static const char *connector_name = "Television"; @@ -586,9 +587,11 @@ int dvb_create_media_graph(struct dvb_adapter *adap, switch (entity->function) { case MEDIA_ENT_F_TUNER: tuner = entity; + ntuner++; break; case MEDIA_ENT_F_DTV_DEMOD: demod = entity; + ndemod++; break; case MEDIA_ENT_F_TS_DEMUX: demux = entity; @@ -599,6 +602,18 @@ int dvb_create_media_graph(struct dvb_adapter *adap, } } + /* + * Prepare to signalize to media_create_pad_links() that multiple + * entities of the same type exists and a 1:n or n:1 links need to be + * created. + * NOTE: if both tuner and demod have multiple instances, it is up + * to the caller driver to create such links. + */ + if (ntuner > 1) + tuner = NULL; + if (ndemod > 1) + demod = NULL; + if (create_rf_connector) { conn = kzalloc(sizeof(*conn), GFP_KERNEL); if (!conn) @@ -623,28 +638,44 @@ int dvb_create_media_graph(struct dvb_adapter *adap, if (ret) return ret; - if (!tuner) - ret = media_create_pad_link(conn, 0, - demod, 0, - MEDIA_LNK_FL_ENABLED); + if (!ntuner) + ret = media_create_pad_links(mdev, + MEDIA_ENT_F_CONN_RF, + conn, 0, + MEDIA_ENT_F_DTV_DEMOD, + demod, 0, + MEDIA_LNK_FL_ENABLED, + false); else - ret = media_create_pad_link(conn, 0, - tuner, TUNER_PAD_RF_INPUT, - MEDIA_LNK_FL_ENABLED); + ret = media_create_pad_links(mdev, + MEDIA_ENT_F_CONN_RF, + conn, 0, + MEDIA_ENT_F_TUNER, + tuner, TUNER_PAD_RF_INPUT, + MEDIA_LNK_FL_ENABLED, + false); if (ret) return ret; } - if (tuner && demod) { - ret = media_create_pad_link(tuner, TUNER_PAD_IF_OUTPUT, - demod, 0, MEDIA_LNK_FL_ENABLED); + if (ntuner && ndemod) { + ret = media_create_pad_links(mdev, + MEDIA_ENT_F_TUNER, + tuner, TUNER_PAD_IF_OUTPUT, + MEDIA_ENT_F_DTV_DEMOD, + demod, 0, MEDIA_LNK_FL_ENABLED, + false); if (ret) return ret; } - if (demod && demux) { - ret = media_create_pad_link(demod, 1, demux, - 0, MEDIA_LNK_FL_ENABLED); + if (ndemod && demux) { + ret = media_create_pad_links(mdev, + MEDIA_ENT_F_DTV_DEMOD, + demod, 1, + MEDIA_ENT_F_TS_DEMUX, + demux, 0, MEDIA_LNK_FL_ENABLED, + false); if (ret) return -ENOMEM; } diff --git a/drivers/media/dvb-core/dvbdev.h b/drivers/media/dvb-core/dvbdev.h index b622d6a3b95e00..d7c67baa885e38 100644 --- a/drivers/media/dvb-core/dvbdev.h +++ b/drivers/media/dvb-core/dvbdev.h @@ -225,6 +225,13 @@ void dvb_unregister_device(struct dvb_device *dvbdev); * * @adap: pointer to struct dvb_adapter * @create_rf_connector: if true, it creates the RF connector too + * + * This function checks all DVB-related functions at the media controller + * entities and creates the needed links for the media graph. It is + * capable of working with multiple tuners or multiple frontends, but it + * won't create links if the device has multiple tuners and multiple frontends + * or if the device has multiple muxes. In such case, the caller driver should + * manually create the remaining links. */ __must_check int dvb_create_media_graph(struct dvb_adapter *adap, bool create_rf_connector); -- cgit 1.2.3-korg From ce084d487c8a0731bff5739e735b7bb82b94e53b Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Wed, 30 Dec 2015 11:09:39 -0200 Subject: [media] mxl111sf: Add a tuner entity While mxl111sf may have multiple frontends, it has just one tuner. Reflect that on the media graph. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-core/dvbdev.h | 6 ++++++ drivers/media/usb/dvb-usb-v2/mxl111sf.c | 20 ++++++++++++++++++++ drivers/media/usb/dvb-usb-v2/mxl111sf.h | 5 +++++ 3 files changed, 31 insertions(+) diff --git a/drivers/media/dvb-core/dvbdev.h b/drivers/media/dvb-core/dvbdev.h index d7c67baa885e38..4aff7bd3dea894 100644 --- a/drivers/media/dvb-core/dvbdev.h +++ b/drivers/media/dvb-core/dvbdev.h @@ -242,6 +242,11 @@ static inline void dvb_register_media_controller(struct dvb_adapter *adap, adap->mdev = mdev; } +static inline struct media_device +*dvb_get_media_controller(struct dvb_adapter *adap) +{ + return adap->mdev; +} #else static inline int dvb_create_media_graph(struct dvb_adapter *adap, @@ -250,6 +255,7 @@ int dvb_create_media_graph(struct dvb_adapter *adap, return 0; }; #define dvb_register_media_controller(a, b) {} +#define dvb_get_media_controller(a) NULL #endif int dvb_generic_open (struct inode *inode, struct file *file); diff --git a/drivers/media/usb/dvb-usb-v2/mxl111sf.c b/drivers/media/usb/dvb-usb-v2/mxl111sf.c index 1710f9038d7500..b669deccc34c64 100644 --- a/drivers/media/usb/dvb-usb-v2/mxl111sf.c +++ b/drivers/media/usb/dvb-usb-v2/mxl111sf.c @@ -10,6 +10,7 @@ #include #include +#include #include "mxl111sf.h" #include "mxl111sf-reg.h" @@ -868,6 +869,10 @@ static struct mxl111sf_tuner_config mxl_tuner_config = { static int mxl111sf_attach_tuner(struct dvb_usb_adapter *adap) { struct mxl111sf_state *state = adap_to_priv(adap); +#ifdef CONFIG_MEDIA_CONTROLLER_DVB + struct media_device *mdev = dvb_get_media_controller(&adap->dvb_adap); + int ret; +#endif int i; pr_debug("%s()\n", __func__); @@ -879,6 +884,21 @@ static int mxl111sf_attach_tuner(struct dvb_usb_adapter *adap) adap->fe[i]->ops.read_signal_strength = adap->fe[i]->ops.tuner_ops.get_rf_strength; } +#ifdef CONFIG_MEDIA_CONTROLLER_DVB + state->tuner.function = MEDIA_ENT_F_TUNER; + state->tuner.name = "mxl111sf tuner"; + state->tuner_pads[TUNER_PAD_RF_INPUT].flags = MEDIA_PAD_FL_SINK; + state->tuner_pads[TUNER_PAD_IF_OUTPUT].flags = MEDIA_PAD_FL_SOURCE; + + ret = media_entity_pads_init(&state->tuner, + TUNER_NUM_PADS, state->tuner_pads); + if (ret) + return ret; + + ret = media_device_register_entity(mdev, &state->tuner); + if (ret) + return ret; +#endif return 0; } diff --git a/drivers/media/usb/dvb-usb-v2/mxl111sf.h b/drivers/media/usb/dvb-usb-v2/mxl111sf.h index ee70df1f1e946b..846260e0eec021 100644 --- a/drivers/media/usb/dvb-usb-v2/mxl111sf.h +++ b/drivers/media/usb/dvb-usb-v2/mxl111sf.h @@ -17,6 +17,7 @@ #define DVB_USB_LOG_PREFIX "mxl111sf" #include "dvb_usb.h" #include +#include #define MXL_EP1_REG_READ 1 #define MXL_EP2_REG_WRITE 2 @@ -85,6 +86,10 @@ struct mxl111sf_state { struct mutex fe_lock; u8 num_frontends; struct mxl111sf_adap_state adap_state[3]; +#ifdef CONFIG_MEDIA_CONTROLLER_DVB + struct media_entity tuner; + struct media_pad tuner_pads[2]; +#endif }; int mxl111sf_read_reg(struct mxl111sf_state *state, u8 addr, u8 *data); -- cgit 1.2.3-korg From be0270ec89e6b9b49de7e533dd1f3a89ad34d205 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 28 Dec 2015 12:03:47 -0200 Subject: [media] Postpone the addition of MEDIA_IOC_G_TOPOLOGY There are a few discussions left with regards to this ioctl: 1) the name of the new structs will contain _v2_ on it? 2) what's the best alternative to avoid compat32 issues? Due to that, let's postpone the addition of this new ioctl to the next Kernel version, to give people more time to discuss it. Signed-off-by: Mauro Carvalho Chehab --- Documentation/DocBook/media/v4l/media-ioc-g-topology.xml | 3 +++ drivers/media/media-device.c | 7 ++++++- include/uapi/linux/media.h | 6 +++++- 3 files changed, 14 insertions(+), 2 deletions(-) diff --git a/Documentation/DocBook/media/v4l/media-ioc-g-topology.xml b/Documentation/DocBook/media/v4l/media-ioc-g-topology.xml index e0d49fa329f095..63152ab9efbad0 100644 --- a/Documentation/DocBook/media/v4l/media-ioc-g-topology.xml +++ b/Documentation/DocBook/media/v4l/media-ioc-g-topology.xml @@ -48,6 +48,9 @@ Description + + NOTE: This new ioctl is programmed to be added on Kernel 4.6. Its definition/arguments may change until its final version. + The typical usage of this ioctl is to call it twice. On the first call, the structure defined at &media-v2-topology; should be zeroed. At return, if no errors happen, this ioctl will return the diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 4d1c13de494bfb..7dae0ac0f3aec1 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -234,6 +234,7 @@ static long media_device_setup_link(struct media_device *mdev, return ret; } +#if 0 /* Let's postpone it to Kernel 4.6 */ static long __media_device_get_topology(struct media_device *mdev, struct media_v2_topology *topo) { @@ -389,6 +390,7 @@ static long media_device_get_topology(struct media_device *mdev, return 0; } +#endif static long media_device_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) @@ -422,13 +424,14 @@ static long media_device_ioctl(struct file *filp, unsigned int cmd, mutex_unlock(&dev->graph_mutex); break; +#if 0 /* Let's postpone it to Kernel 4.6 */ case MEDIA_IOC_G_TOPOLOGY: mutex_lock(&dev->graph_mutex); ret = media_device_get_topology(dev, (struct media_v2_topology __user *)arg); mutex_unlock(&dev->graph_mutex); break; - +#endif default: ret = -ENOIOCTLCMD; } @@ -477,7 +480,9 @@ static long media_device_compat_ioctl(struct file *filp, unsigned int cmd, case MEDIA_IOC_DEVICE_INFO: case MEDIA_IOC_ENUM_ENTITIES: case MEDIA_IOC_SETUP_LINK: +#if 0 /* Let's postpone it to Kernel 4.6 */ case MEDIA_IOC_G_TOPOLOGY: +#endif return media_device_ioctl(filp, cmd, arg); case MEDIA_IOC_ENUM_LINKS32: diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h index 5dbb208e5451ac..1e3c8cb43bd7ac 100644 --- a/include/uapi/linux/media.h +++ b/include/uapi/linux/media.h @@ -286,7 +286,7 @@ struct media_links_enum { * later, before the adding this API upstream. */ - +#if 0 /* Let's postpone it to Kernel 4.6 */ struct media_v2_entity { __u32 id; char name[64]; /* FIXME: move to a property? (RFC says so) */ @@ -351,6 +351,7 @@ static inline void __user *media_get_uptr(__u64 arg) { return (void __user *)(uintptr_t)arg; } +#endif /* ioctls */ @@ -358,6 +359,9 @@ static inline void __user *media_get_uptr(__u64 arg) #define MEDIA_IOC_ENUM_ENTITIES _IOWR('|', 0x01, struct media_entity_desc) #define MEDIA_IOC_ENUM_LINKS _IOWR('|', 0x02, struct media_links_enum) #define MEDIA_IOC_SETUP_LINK _IOWR('|', 0x03, struct media_link_desc) + +#if 0 /* Let's postpone it to Kernel 4.6 */ #define MEDIA_IOC_G_TOPOLOGY _IOWR('|', 0x04, struct media_v2_topology) +#endif #endif /* __LINUX_MEDIA_H */ -- cgit 1.2.3-korg