Merge tag 'media/v6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media updates from Mauro Carvalho Chehab:

 - v4l core: subdev frame interval now supports which field

 - v4l kapi: moves and renames the init_cfg pad op to init_state as an
   internal op.

 - new sensor drivers: gc0308, gc2145, Avnet Alvium, ov64a40, tw9900

 - new camera driver: STM32 DCMIPP

 - s5p-mfc has gained MFC v12 support

 - new ISP driver added to staging: Starfive

 - new stateful encoder/decoded: Wave5 codec It is found on the J721S2
   SoC, JH7100 SoC, ssd202d SoC. Etc.

 - fwnode gained support for MIPI "DisCo for Imaging"
   (https://www.mipi.org/specifications/mipi-disco-imaging)

 - as usual, lots of cleanups, fixups and driver improvements.

* tag 'media/v6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (309 commits)
  media: i2c: thp7312: select CONFIG_FW_LOADER
  media: i2c: mt9m114: use fsleep() in place of udelay()
  media: videobuf2: core: Rename min_buffers_needed field in vb2_queue
  media: i2c: thp7312: Store frame interval in subdev state
  media: docs: uAPI: Fix documentation of 'which' field for routing ioctls
  media: docs: uAPI: Expand error documentation for invalid 'which' value
  media: docs: uAPI: Clarify error documentation for invalid 'which' value
  media: v4l2-subdev: Store frame interval in subdev state
  media: v4l2-subdev: Add which field to struct v4l2_subdev_frame_interval
  media: v4l2-subdev: Turn .[gs]_frame_interval into pad operations
  media: v4l: subdev: Move out subdev state lock macros outside CONFIG_MEDIA_CONTROLLER
  media: s5p-mfc: DPB Count Independent of VIDIOC_REQBUF
  media: s5p-mfc: Load firmware for each run in MFCv12.
  media: s5p-mfc: Set context for valid case before calling try_run
  media: s5p-mfc: Add support for DMABUF for encoder
  media: s5p-mfc: Add support for UHD encoding.
  media: s5p-mfc: Add support for rate controls in MFCv12
  media: s5p-mfc: Add YV12 and I420 multiplanar format support
  media: s5p-mfc: Add initial support for MFCv12
  media: s5p-mfc: Rename IS_MFCV10 macro
  ...

52 files changed, 3526 insertions, 173 deletions

diff --git a/drivers/staging/media/Kconfig b/drivers/staging/media/Kconfig
index bc6c7b248f862..554c2e475ce3b 100644
--- a/drivers/staging/media/Kconfig
+++ b/drivers/staging/media/Kconfig
@@ -36,6 +36,8 @@ source "drivers/staging/media/omap4iss/Kconfig"
 
 source "drivers/staging/media/rkvdec/Kconfig"
 
+source "drivers/staging/media/starfive/Kconfig"
+
 source "drivers/staging/media/sunxi/Kconfig"
 
 source "drivers/staging/media/tegra-video/Kconfig"
diff --git a/drivers/staging/media/Makefile b/drivers/staging/media/Makefile
index 1a4c3a062e3dc..dcaeeca0ee6d7 100644
--- a/drivers/staging/media/Makefile
+++ b/drivers/staging/media/Makefile
@@ -6,6 +6,7 @@ obj-$(CONFIG_VIDEO_MAX96712)	+= max96712/
 obj-$(CONFIG_VIDEO_MESON_VDEC)	+= meson/vdec/
 obj-$(CONFIG_VIDEO_OMAP4)	+= omap4iss/
 obj-$(CONFIG_VIDEO_ROCKCHIP_VDEC)	+= rkvdec/
+obj-$(CONFIG_VIDEO_STARFIVE_CAMSS)	+= starfive/
 obj-$(CONFIG_VIDEO_SUNXI)	+= sunxi/
 obj-$(CONFIG_VIDEO_TEGRA)	+= tegra-video/
 obj-$(CONFIG_VIDEO_IPU3_IMGU)	+= ipu3/
diff --git a/drivers/staging/media/atomisp/i2c/atomisp-gc0310.c b/drivers/staging/media/atomisp/i2c/atomisp-gc0310.c
index 58cddf11c9ab6..5bcd634a2a44d 100644
--- a/drivers/staging/media/atomisp/i2c/atomisp-gc0310.c
+++ b/drivers/staging/media/atomisp/i2c/atomisp-gc0310.c
@@ -361,7 +361,7 @@ gc0310_get_pad_format(struct gc0310_device *dev,
 		      unsigned int pad, enum v4l2_subdev_format_whence which)
 {
 	if (which == V4L2_SUBDEV_FORMAT_TRY)
-		return v4l2_subdev_get_try_format(&dev->sd, state, pad);
+		return v4l2_subdev_state_get_format(state, pad);
 
 	return &dev->mode.fmt;
 }
@@ -496,9 +496,17 @@ error_power_down:
 	return ret;
 }
 
-static int gc0310_g_frame_interval(struct v4l2_subdev *sd,
-				   struct v4l2_subdev_frame_interval *interval)
+static int gc0310_get_frame_interval(struct v4l2_subdev *sd,
+				     struct v4l2_subdev_state *sd_state,
+				     struct v4l2_subdev_frame_interval *interval)
 {
+	/*
+	 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+	 * subdev active state API.
+	 */
+	if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+		return -EINVAL;
+
 	interval->interval.numerator = 1;
 	interval->interval.denominator = GC0310_FPS;
 
@@ -545,7 +553,6 @@ static const struct v4l2_subdev_sensor_ops gc0310_sensor_ops = {
 
 static const struct v4l2_subdev_video_ops gc0310_video_ops = {
 	.s_stream = gc0310_s_stream,
-	.g_frame_interval = gc0310_g_frame_interval,
 };
 
 static const struct v4l2_subdev_pad_ops gc0310_pad_ops = {
@@ -553,6 +560,7 @@ static const struct v4l2_subdev_pad_ops gc0310_pad_ops = {
 	.enum_frame_size = gc0310_enum_frame_size,
 	.get_fmt = gc0310_get_fmt,
 	.set_fmt = gc0310_set_fmt,
+	.get_frame_interval = gc0310_get_frame_interval,
 };
 
 static const struct v4l2_subdev_ops gc0310_ops = {
diff --git a/drivers/staging/media/atomisp/i2c/atomisp-gc2235.c b/drivers/staging/media/atomisp/i2c/atomisp-gc2235.c
index 9fa390fbc5f31..bec4c56158640 100644
--- a/drivers/staging/media/atomisp/i2c/atomisp-gc2235.c
+++ b/drivers/staging/media/atomisp/i2c/atomisp-gc2235.c
@@ -561,7 +561,7 @@ static int gc2235_set_fmt(struct v4l2_subdev *sd,
 
 	fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
 	if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
-		sd_state->pads->try_fmt = *fmt;
+		*v4l2_subdev_state_get_format(sd_state, 0) = *fmt;
 		mutex_unlock(&dev->input_lock);
 		return 0;
 	}
@@ -698,11 +698,19 @@ fail_power_off:
 	return ret;
 }
 
-static int gc2235_g_frame_interval(struct v4l2_subdev *sd,
-				   struct v4l2_subdev_frame_interval *interval)
+static int gc2235_get_frame_interval(struct v4l2_subdev *sd,
+				     struct v4l2_subdev_state *sd_state,
+				     struct v4l2_subdev_frame_interval *interval)
 {
 	struct gc2235_device *dev = to_gc2235_sensor(sd);
 
+	/*
+	 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+	 * subdev active state API.
+	 */
+	if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+		return -EINVAL;
+
 	interval->interval.numerator = 1;
 	interval->interval.denominator = dev->res->fps;
 
@@ -754,7 +762,6 @@ static const struct v4l2_subdev_sensor_ops gc2235_sensor_ops = {
 
 static const struct v4l2_subdev_video_ops gc2235_video_ops = {
 	.s_stream = gc2235_s_stream,
-	.g_frame_interval = gc2235_g_frame_interval,
 };
 
 static const struct v4l2_subdev_core_ops gc2235_core_ops = {
@@ -767,6 +774,7 @@ static const struct v4l2_subdev_pad_ops gc2235_pad_ops = {
 	.enum_frame_size = gc2235_enum_frame_size,
 	.get_fmt = gc2235_get_fmt,
 	.set_fmt = gc2235_set_fmt,
+	.get_frame_interval = gc2235_get_frame_interval,
 };
 
 static const struct v4l2_subdev_ops gc2235_ops = {
diff --git a/drivers/staging/media/atomisp/i2c/atomisp-mt9m114.c b/drivers/staging/media/atomisp/i2c/atomisp-mt9m114.c
index 1c6643c442ef3..20f02d18a8de1 100644
--- a/drivers/staging/media/atomisp/i2c/atomisp-mt9m114.c
+++ b/drivers/staging/media/atomisp/i2c/atomisp-mt9m114.c
@@ -666,7 +666,7 @@ static int mt9m114_set_fmt(struct v4l2_subdev *sd,
 	fmt->height = res->height;
 
 	if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
-		sd_state->pads->try_fmt = *fmt;
+		*v4l2_subdev_state_get_format(sd_state, 0) = *fmt;
 		return 0;
 	}
 
@@ -1388,11 +1388,19 @@ static int mt9m114_t_vflip(struct v4l2_subdev *sd, int value)
 	return !!err;
 }
 
-static int mt9m114_g_frame_interval(struct v4l2_subdev *sd,
-				    struct v4l2_subdev_frame_interval *interval)
+static int mt9m114_get_frame_interval(struct v4l2_subdev *sd,
+				      struct v4l2_subdev_state *sd_state,
+				      struct v4l2_subdev_frame_interval *interval)
 {
 	struct mt9m114_device *dev = to_mt9m114_sensor(sd);
 
+	/*
+	 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+	 * subdev active state API.
+	 */
+	if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+		return -EINVAL;
+
 	interval->interval.numerator = 1;
 	interval->interval.denominator = mt9m114_res[dev->res].fps;
 
@@ -1479,7 +1487,6 @@ static int mt9m114_g_skip_frames(struct v4l2_subdev *sd, u32 *frames)
 
 static const struct v4l2_subdev_video_ops mt9m114_video_ops = {
 	.s_stream = mt9m114_s_stream,
-	.g_frame_interval = mt9m114_g_frame_interval,
 };
 
 static const struct v4l2_subdev_sensor_ops mt9m114_sensor_ops = {
@@ -1498,6 +1505,7 @@ static const struct v4l2_subdev_pad_ops mt9m114_pad_ops = {
 	.get_fmt = mt9m114_get_fmt,
 	.set_fmt = mt9m114_set_fmt,
 	.set_selection = mt9m114_s_exposure_selection,
+	.get_frame_interval = mt9m114_get_frame_interval,
 };
 
 static const struct v4l2_subdev_ops mt9m114_ops = {
diff --git a/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c b/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c
index 6a72691ed5b74..133e346ae51b0 100644
--- a/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c
+++ b/drivers/staging/media/atomisp/i2c/atomisp-ov2722.c
@@ -671,7 +671,7 @@ static int ov2722_set_fmt(struct v4l2_subdev *sd,
 
 	fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
 	if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
-		sd_state->pads->try_fmt = *fmt;
+		*v4l2_subdev_state_get_format(sd_state, 0) = *fmt;
 		return 0;
 	}
 
@@ -845,11 +845,19 @@ fail_power_off:
 	return ret;
 }
 
-static int ov2722_g_frame_interval(struct v4l2_subdev *sd,
-				   struct v4l2_subdev_frame_interval *interval)
+static int ov2722_get_frame_interval(struct v4l2_subdev *sd,
+				     struct v4l2_subdev_state *sd_state,
+				     struct v4l2_subdev_frame_interval *interval)
 {
 	struct ov2722_device *dev = to_ov2722_sensor(sd);
 
+	/*
+	 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+	 * subdev active state API.
+	 */
+	if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+		return -EINVAL;
+
 	interval->interval.numerator = 1;
 	interval->interval.denominator = dev->res->fps;
 
@@ -901,7 +909,6 @@ static const struct v4l2_subdev_sensor_ops ov2722_sensor_ops = {
 
 static const struct v4l2_subdev_video_ops ov2722_video_ops = {
 	.s_stream = ov2722_s_stream,
-	.g_frame_interval = ov2722_g_frame_interval,
 };
 
 static const struct v4l2_subdev_core_ops ov2722_core_ops = {
@@ -914,6 +921,7 @@ static const struct v4l2_subdev_pad_ops ov2722_pad_ops = {
 	.enum_frame_size = ov2722_enum_frame_size,
 	.get_fmt = ov2722_get_fmt,
 	.set_fmt = ov2722_set_fmt,
+	.get_frame_interval = ov2722_get_frame_interval,
 };
 
 static const struct v4l2_subdev_ops ov2722_ops = {
diff --git a/drivers/staging/media/atomisp/pci/atomisp_cmd.c b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
index 759233a7ba505..f44e6412f4e31 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_cmd.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_cmd.c
@@ -105,8 +105,8 @@ static unsigned short atomisp_get_sensor_fps(struct atomisp_sub_device *asd)
 	unsigned short fps = 0;
 	int ret;
 
-	ret = v4l2_subdev_call(isp->inputs[asd->input_curr].camera,
-			       video, g_frame_interval, &fi);
+	ret = v4l2_subdev_call_state_active(isp->inputs[asd->input_curr].camera,
+					    pad, get_frame_interval, &fi);
 
 	if (!ret && fi.interval.numerator)
 		fps = fi.interval.denominator / fi.interval.numerator;
diff --git a/drivers/staging/media/atomisp/pci/atomisp_csi2.c b/drivers/staging/media/atomisp/pci/atomisp_csi2.c
index abf55a86f7957..89118438a3b67 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_csi2.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_csi2.c
@@ -29,8 +29,7 @@ v4l2_mbus_framefmt *__csi2_get_format(struct atomisp_mipi_csi2_device *csi2,
 				      unsigned int pad)
 {
 	if (which == V4L2_SUBDEV_FORMAT_TRY)
-		return v4l2_subdev_get_try_format(&csi2->subdev, sd_state,
-						  pad);
+		return v4l2_subdev_state_get_format(sd_state, pad);
 	else
 		return &csi2->formats[pad];
 }
diff --git a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
index a8e4779d007f4..01b7fa9b56a21 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
@@ -1028,7 +1028,7 @@ static int atomisp_qbuf_wrapper(struct file *file, void *fh, struct v4l2_buffer
 	struct atomisp_device *isp = video_get_drvdata(vdev);
 	struct atomisp_video_pipe *pipe = atomisp_to_video_pipe(vdev);
 
-	if (buf->index >= vdev->queue->num_buffers)
+	if (buf->index >= vb2_get_num_buffers(vdev->queue))
 		return -EINVAL;
 
 	if (buf->reserved2 & ATOMISP_BUFFER_HAS_PER_FRAME_SETTING) {
@@ -1059,7 +1059,7 @@ static int atomisp_dqbuf_wrapper(struct file *file, void *fh, struct v4l2_buffer
 	if (ret)
 		return ret;
 
-	vb = pipe->vb_queue.bufs[buf->index];
+	vb = vb2_get_buffer(&pipe->vb_queue, buf->index);
 	frame = vb_to_frame(vb);
 
 	buf->reserved = asd->frame_status[buf->index];
@@ -1739,8 +1739,8 @@ static int atomisp_s_parm(struct file *file, void *fh,
 
 		fi.interval = parm->parm.capture.timeperframe;
 
-		rval = v4l2_subdev_call(isp->inputs[asd->input_curr].camera,
-					video, s_frame_interval, &fi);
+		rval = v4l2_subdev_call_state_active(isp->inputs[asd->input_curr].camera,
+						     pad, set_frame_interval, &fi);
 		if (!rval)
 			parm->parm.capture.timeperframe = fi.interval;
 
diff --git a/drivers/staging/media/atomisp/pci/atomisp_subdev.c b/drivers/staging/media/atomisp/pci/atomisp_subdev.c
index 471912dea5cd8..a87fc74159e20 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_subdev.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_subdev.c
@@ -240,9 +240,9 @@ struct v4l2_rect *atomisp_subdev_get_rect(struct v4l2_subdev *sd,
 	if (which == V4L2_SUBDEV_FORMAT_TRY) {
 		switch (target) {
 		case V4L2_SEL_TGT_CROP:
-			return v4l2_subdev_get_try_crop(sd, sd_state, pad);
+			return v4l2_subdev_state_get_crop(sd_state, pad);
 		case V4L2_SEL_TGT_COMPOSE:
-			return v4l2_subdev_get_try_compose(sd, sd_state, pad);
+			return v4l2_subdev_state_get_compose(sd_state, pad);
 		}
 	}
 
@@ -264,7 +264,7 @@ struct v4l2_mbus_framefmt
 	struct atomisp_sub_device *isp_sd = v4l2_get_subdevdata(sd);
 
 	if (which == V4L2_SUBDEV_FORMAT_TRY)
-		return v4l2_subdev_get_try_format(sd, sd_state, pad);
+		return v4l2_subdev_state_get_format(sd_state, pad);
 
 	return &isp_sd->fmt[pad].fmt;
 }
diff --git a/drivers/staging/media/atomisp/pci/atomisp_tpg.c b/drivers/staging/media/atomisp/pci/atomisp_tpg.c
index 074826a5b7064..92e61ee909934 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_tpg.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_tpg.c
@@ -47,7 +47,7 @@ static int tpg_set_fmt(struct v4l2_subdev *sd,
 	/* only raw8 grbg is supported by TPG */
 	fmt->code = MEDIA_BUS_FMT_SGRBG8_1X8;
 	if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
-		sd_state->pads->try_fmt = *fmt;
+		*v4l2_subdev_state_get_format(sd_state, 0) = *fmt;
 		return 0;
 	}
 	return 0;
diff --git a/drivers/staging/media/deprecated/atmel/atmel-isc-base.c b/drivers/staging/media/deprecated/atmel/atmel-isc-base.c
index 8e26663cecb63..305b103153d7e 100644
--- a/drivers/staging/media/deprecated/atmel/atmel-isc-base.c
+++ b/drivers/staging/media/deprecated/atmel/atmel-isc-base.c
@@ -820,6 +820,8 @@ static int isc_try_configure_pipeline(struct isc_device *isc)
 static void isc_try_fse(struct isc_device *isc,
 			struct v4l2_subdev_state *sd_state)
 {
+	struct v4l2_rect *try_crop =
+		v4l2_subdev_state_get_crop(sd_state, 0);
 	struct v4l2_subdev_frame_size_enum fse = {
 		.which = V4L2_SUBDEV_FORMAT_TRY,
 	};
@@ -841,11 +843,11 @@ static void isc_try_fse(struct isc_device *isc,
 	 * just use the maximum ISC can receive.
 	 */
 	if (ret) {
-		sd_state->pads->try_crop.width = isc->max_width;
-		sd_state->pads->try_crop.height = isc->max_height;
+		try_crop->width = isc->max_width;
+		try_crop->height = isc->max_height;
 	} else {
-		sd_state->pads->try_crop.width = fse.max_width;
-		sd_state->pads->try_crop.height = fse.max_height;
+		try_crop->width = fse.max_width;
+		try_crop->height = fse.max_height;
 	}
 }
 
@@ -1869,7 +1871,7 @@ static int isc_async_complete(struct v4l2_async_notifier *notifier)
 	q->mem_ops		= &vb2_dma_contig_memops;
 	q->timestamp_flags	= V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 	q->lock			= &isc->lock;
-	q->min_buffers_needed	= 1;
+	q->min_queued_buffers	= 1;
 	q->dev			= isc->dev;
 
 	ret = vb2_queue_init(q);
diff --git a/drivers/staging/media/imx/imx-ic-prp.c b/drivers/staging/media/imx/imx-ic-prp.c
index ac5fb332088ea..2b80d54006b39 100644
--- a/drivers/staging/media/imx/imx-ic-prp.c
+++ b/drivers/staging/media/imx/imx-ic-prp.c
@@ -82,10 +82,8 @@ static struct v4l2_mbus_framefmt *
 __prp_get_fmt(struct prp_priv *priv, struct v4l2_subdev_state *sd_state,
 	      unsigned int pad, enum v4l2_subdev_format_whence which)
 {
-	struct imx_ic_priv *ic_priv = priv->ic_priv;
-
 	if (which == V4L2_SUBDEV_FORMAT_TRY)
-		return v4l2_subdev_get_try_format(&ic_priv->sd, sd_state, pad);
+		return v4l2_subdev_state_get_format(sd_state, pad);
 	else
 		return &priv->format_mbus;
 }
@@ -395,11 +393,19 @@ out:
 	return ret;
 }
 
-static int prp_g_frame_interval(struct v4l2_subdev *sd,
-				struct v4l2_subdev_frame_interval *fi)
+static int prp_get_frame_interval(struct v4l2_subdev *sd,
+				  struct v4l2_subdev_state *sd_state,
+				  struct v4l2_subdev_frame_interval *fi)
 {
 	struct prp_priv *priv = sd_to_priv(sd);
 
+	/*
+	 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+	 * subdev active state API.
+	 */
+	if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+		return -EINVAL;
+
 	if (fi->pad >= PRP_NUM_PADS)
 		return -EINVAL;
 
@@ -410,11 +416,19 @@ static int prp_g_frame_interval(struct v4l2_subdev *sd,
 	return 0;
 }
 
-static int prp_s_frame_interval(struct v4l2_subdev *sd,
-				struct v4l2_subdev_frame_interval *fi)
+static int prp_set_frame_interval(struct v4l2_subdev *sd,
+				  struct v4l2_subdev_state *sd_state,
+				  struct v4l2_subdev_frame_interval *fi)
 {
 	struct prp_priv *priv = sd_to_priv(sd);
 
+	/*
+	 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+	 * subdev active state API.
+	 */
+	if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+		return -EINVAL;
+
 	if (fi->pad >= PRP_NUM_PADS)
 		return -EINVAL;
 
@@ -450,16 +464,15 @@ static int prp_registered(struct v4l2_subdev *sd)
 }
 
 static const struct v4l2_subdev_pad_ops prp_pad_ops = {
-	.init_cfg = imx_media_init_cfg,
 	.enum_mbus_code = prp_enum_mbus_code,
 	.get_fmt = prp_get_fmt,
 	.set_fmt = prp_set_fmt,
+	.get_frame_interval = prp_get_frame_interval,
+	.set_frame_interval = prp_set_frame_interval,
 	.link_validate = prp_link_validate,
 };
 
 static const struct v4l2_subdev_video_ops prp_video_ops = {
-	.g_frame_interval = prp_g_frame_interval,
-	.s_frame_interval = prp_s_frame_interval,
 	.s_stream = prp_s_stream,
 };
 
@@ -474,6 +487,7 @@ static const struct v4l2_subdev_ops prp_subdev_ops = {
 };
 
 static const struct v4l2_subdev_internal_ops prp_internal_ops = {
+	.init_state = imx_media_init_state,
 	.registered = prp_registered,
 };
 
diff --git a/drivers/staging/media/imx/imx-ic-prpencvf.c b/drivers/staging/media/imx/imx-ic-prpencvf.c
index 9b81cfbcd7779..17fd980c9d3c3 100644
--- a/drivers/staging/media/imx/imx-ic-prpencvf.c
+++ b/drivers/staging/media/imx/imx-ic-prpencvf.c
@@ -790,10 +790,8 @@ static struct v4l2_mbus_framefmt *
 __prp_get_fmt(struct prp_priv *priv, struct v4l2_subdev_state *sd_state,
 	      unsigned int pad, enum v4l2_subdev_format_whence which)
 {
-	struct imx_ic_priv *ic_priv = priv->ic_priv;
-
 	if (which == V4L2_SUBDEV_FORMAT_TRY)
-		return v4l2_subdev_get_try_format(&ic_priv->sd, sd_state, pad);
+		return v4l2_subdev_state_get_format(sd_state, pad);
 	else
 		return &priv->format_mbus[pad];
 }
@@ -1205,11 +1203,19 @@ out:
 	return ret;
 }
 
-static int prp_g_frame_interval(struct v4l2_subdev *sd,
-				struct v4l2_subdev_frame_interval *fi)
+static int prp_get_frame_interval(struct v4l2_subdev *sd,
+				  struct v4l2_subdev_state *sd_state,
+				  struct v4l2_subdev_frame_interval *fi)
 {
 	struct prp_priv *priv = sd_to_priv(sd);
 
+	/*
+	 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+	 * subdev active state API.
+	 */
+	if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+		return -EINVAL;
+
 	if (fi->pad >= PRPENCVF_NUM_PADS)
 		return -EINVAL;
 
@@ -1220,11 +1226,19 @@ static int prp_g_frame_interval(struct v4l2_subdev *sd,
 	return 0;
 }
 
-static int prp_s_frame_interval(struct v4l2_subdev *sd,
-				struct v4l2_subdev_frame_interval *fi)
+static int prp_set_frame_interval(struct v4l2_subdev *sd,
+				  struct v4l2_subdev_state *sd_state,
+				  struct v4l2_subdev_frame_interval *fi)
 {
 	struct prp_priv *priv = sd_to_priv(sd);
 
+	/*
+	 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+	 * subdev active state API.
+	 */
+	if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+		return -EINVAL;
+
 	if (fi->pad >= PRPENCVF_NUM_PADS)
 		return -EINVAL;
 
@@ -1298,16 +1312,15 @@ static void prp_unregistered(struct v4l2_subdev *sd)
 }
 
 static const struct v4l2_subdev_pad_ops prp_pad_ops = {
-	.init_cfg = imx_media_init_cfg,
 	.enum_mbus_code = prp_enum_mbus_code,
 	.enum_frame_size = prp_enum_frame_size,
 	.get_fmt = prp_get_fmt,
 	.set_fmt = prp_set_fmt,
+	.get_frame_interval = prp_get_frame_interval,
+	.set_frame_interval = prp_set_frame_interval,
 };
 
 static const struct v4l2_subdev_video_ops prp_video_ops = {
-	.g_frame_interval = prp_g_frame_interval,
-	.s_frame_interval = prp_s_frame_interval,
 	.s_stream = prp_s_stream,
 };
 
@@ -1322,6 +1335,7 @@ static const struct v4l2_subdev_ops prp_subdev_ops = {
 };
 
 static const struct v4l2_subdev_internal_ops prp_internal_ops = {
+	.init_state = imx_media_init_state,
 	.registered = prp_registered,
 	.unregistered = prp_unregistered,
 };
diff --git a/drivers/staging/media/imx/imx-media-capture.c b/drivers/staging/media/imx/imx-media-capture.c
index 4846078315ff3..efa7623b5cee1 100644
--- a/drivers/staging/media/imx/imx-media-capture.c
+++ b/drivers/staging/media/imx/imx-media-capture.c
@@ -511,7 +511,8 @@ static int capture_legacy_g_parm(struct file *file, void *fh,
 	if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 		return -EINVAL;
 
-	ret = v4l2_subdev_call(priv->src_sd, video, g_frame_interval, &fi);
+	ret = v4l2_subdev_call_state_active(priv->src_sd, pad,
+					    get_frame_interval, &fi);
 	if (ret < 0)
 		return ret;
 
@@ -534,7 +535,8 @@ static int capture_legacy_s_parm(struct file *file, void *fh,
 		return -EINVAL;
 
 	fi.interval = a->parm.capture.timeperframe;
-	ret = v4l2_subdev_call(priv->src_sd, video, s_frame_interval, &fi);
+	ret = v4l2_subdev_call_state_active(priv->src_sd, pad,
+					    set_frame_interval, &fi);
 	if (ret < 0)
 		return ret;
 
@@ -605,6 +607,7 @@ static int capture_queue_setup(struct vb2_queue *vq,
 {
 	struct capture_priv *priv = vb2_get_drv_priv(vq);
 	struct v4l2_pix_format *pix = &priv->vdev.fmt;
+	unsigned int q_num_bufs = vb2_get_num_buffers(vq);
 	unsigned int count = *nbuffers;
 
 	if (vq->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
@@ -613,14 +616,14 @@ static int capture_queue_setup(struct vb2_queue *vq,
 	if (*nplanes) {
 		if (*nplanes != 1 || sizes[0] < pix->sizeimage)
 			return -EINVAL;
-		count += vq->num_buffers;
+		count += q_num_bufs;
 	}
 
 	count = min_t(__u32, VID_MEM_LIMIT / pix->sizeimage, count);
 
 	if (*nplanes)
-		*nbuffers = (count < vq->num_buffers) ? 0 :
-			count - vq->num_buffers;
+		*nbuffers = (count < q_num_bufs) ? 0 :
+			count - q_num_bufs;
 	else
 		*nbuffers = count;
 
@@ -1021,7 +1024,7 @@ imx_media_capture_device_init(struct device *dev, struct v4l2_subdev *src_sd,
 	vq->mem_ops = &vb2_dma_contig_memops;
 	vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 	vq->lock = &priv->mutex;
-	vq->min_buffers_needed = 2;
+	vq->min_queued_buffers = 2;
 	vq->dev = priv->dev;
 
 	ret = vb2_queue_init(vq);
diff --git a/drivers/staging/media/imx/imx-media-csi.c b/drivers/staging/media/imx/imx-media-csi.c
index dda1ebc34692a..785aac8819221 100644
--- a/drivers/staging/media/imx/imx-media-csi.c
+++ b/drivers/staging/media/imx/imx-media-csi.c
@@ -902,11 +902,19 @@ static const struct csi_skip_desc *csi_find_best_skip(struct v4l2_fract *in,
  * V4L2 subdev operations.
  */
 
-static int csi_g_frame_interval(struct v4l2_subdev *sd,
-				struct v4l2_subdev_frame_interval *fi)
+static int csi_get_frame_interval(struct v4l2_subdev *sd,
+				  struct v4l2_subdev_state *sd_state,
+				  struct v4l2_subdev_frame_interval *fi)
 {
 	struct csi_priv *priv = v4l2_get_subdevdata(sd);
 
+	/*
+	 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+	 * subdev active state API.
+	 */
+	if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+		return -EINVAL;
+
 	if (fi->pad >= CSI_NUM_PADS)
 		return -EINVAL;
 
@@ -919,13 +927,21 @@ static int csi_g_frame_interval(struct v4l2_subdev *sd,
 	return 0;
 }
 
-static int csi_s_frame_interval(struct v4l2_subdev *sd,
-				struct v4l2_subdev_frame_interval *fi)
+static int csi_set_frame_interval(struct v4l2_subdev *sd,
+				  struct v4l2_subdev_state *sd_state,
+				  struct v4l2_subdev_frame_interval *fi)
 {
 	struct csi_priv *priv = v4l2_get_subdevdata(sd);
 	struct v4l2_fract *input_fi;
 	int ret = 0;
 
+	/*
+	 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+	 * subdev active state API.
+	 */
+	if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+		return -EINVAL;
+
 	mutex_lock(&priv->lock);
 
 	input_fi = &priv->frame_interval[CSI_SINK_PAD];
@@ -1148,7 +1164,7 @@ __csi_get_fmt(struct csi_priv *priv, struct v4l2_subdev_state *sd_state,
 	      unsigned int pad, enum v4l2_subdev_format_whence which)
 {
 	if (which == V4L2_SUBDEV_FORMAT_TRY)
-		return v4l2_subdev_get_try_format(&priv->sd, sd_state, pad);
+		return v4l2_subdev_state_get_format(sd_state, pad);
 	else
 		return &priv->format_mbus[pad];
 }
@@ -1158,8 +1174,7 @@ __csi_get_crop(struct csi_priv *priv, struct v4l2_subdev_state *sd_state,
 	       enum v4l2_subdev_format_whence which)
 {
 	if (which == V4L2_SUBDEV_FORMAT_TRY)
-		return v4l2_subdev_get_try_crop(&priv->sd, sd_state,
-						CSI_SINK_PAD);
+		return v4l2_subdev_state_get_crop(sd_state, CSI_SINK_PAD);
 	else
 		return &priv->crop;
 }
@@ -1169,8 +1184,7 @@ __csi_get_compose(struct csi_priv *priv, struct v4l2_subdev_state *sd_state,
 		  enum v4l2_subdev_format_whence which)
 {
 	if (which == V4L2_SUBDEV_FORMAT_TRY)
-		return v4l2_subdev_get_try_compose(&priv->sd, sd_state,
-						   CSI_SINK_PAD);
+		return v4l2_subdev_state_get_compose(sd_state, CSI_SINK_PAD);
 	else
 		return &priv->compose;
 }
@@ -1862,13 +1876,10 @@ static const struct v4l2_subdev_core_ops csi_core_ops = {
 };
 
 static const struct v4l2_subdev_video_ops csi_video_ops = {
-	.g_frame_interval = csi_g_frame_interval,
-	.s_frame_interval = csi_s_frame_interval,
 	.s_stream = csi_s_stream,
 };
 
 static const struct v4l2_subdev_pad_ops csi_pad_ops = {
-	.init_cfg = imx_media_init_cfg,
 	.enum_mbus_code = csi_enum_mbus_code,
 	.enum_frame_size = csi_enum_frame_size,
 	.enum_frame_interval = csi_enum_frame_interval,
@@ -1876,6 +1887,8 @@ static const struct v4l2_subdev_pad_ops csi_pad_ops = {
 	.set_fmt = csi_set_fmt,
 	.get_selection = csi_get_selection,
 	.set_selection = csi_set_selection,
+	.get_frame_interval = csi_get_frame_interval,
+	.set_frame_interval = csi_set_frame_interval,
 	.link_validate = csi_link_validate,
 };
 
@@ -1886,6 +1899,7 @@ static const struct v4l2_subdev_ops csi_subdev_ops = {
 };
 
 static const struct v4l2_subdev_internal_ops csi_internal_ops = {
+	.init_state = imx_media_init_state,
 	.registered = csi_registered,
 	.unregistered = csi_unregistered,
 };
diff --git a/drivers/staging/media/imx/imx-media-utils.c b/drivers/staging/media/imx/imx-media-utils.c
index 064dc562bc96a..1b5af8945e6b8 100644
--- a/drivers/staging/media/imx/imx-media-utils.c
+++ b/drivers/staging/media/imx/imx-media-utils.c
@@ -426,10 +426,10 @@ EXPORT_SYMBOL_GPL(imx_media_init_mbus_fmt);
 
 /*
  * Initializes the TRY format to the ACTIVE format on all pads
- * of a subdev. Can be used as the .init_cfg pad operation.
+ * of a subdev. Can be used as the .init_state internal operation.
  */
-int imx_media_init_cfg(struct v4l2_subdev *sd,
-		       struct v4l2_subdev_state *sd_state)
+int imx_media_init_state(struct v4l2_subdev *sd,
+			 struct v4l2_subdev_state *sd_state)
 {
 	struct v4l2_mbus_framefmt *mf_try;
 	unsigned int pad;
@@ -445,13 +445,13 @@ int imx_media_init_cfg(struct v4l2_subdev *sd,
 		if (ret)
 			continue;
 
-		mf_try = v4l2_subdev_get_try_format(sd, sd_state, pad);
+		mf_try = v4l2_subdev_state_get_format(sd_state, pad);
 		*mf_try = format.format;
 	}
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(imx_media_init_cfg);
+EXPORT_SYMBOL_GPL(imx_media_init_state);
 
 /*
  * Default the colorspace in tryfmt to SRGB if set to an unsupported
diff --git a/drivers/staging/media/imx/imx-media-vdic.c b/drivers/staging/media/imx/imx-media-vdic.c
index 3c2093c520bab..09da4103a8dbe 100644
--- a/drivers/staging/media/imx/imx-media-vdic.c
+++ b/drivers/staging/media/imx/imx-media-vdic.c
@@ -536,7 +536,7 @@ __vdic_get_fmt(struct vdic_priv *priv, struct v4l2_subdev_state *sd_state,
 	       unsigned int pad, enum v4l2_subdev_format_whence which)
 {
 	if (which == V4L2_SUBDEV_FORMAT_TRY)
-		return v4l2_subdev_get_try_format(&priv->sd, sd_state, pad);
+		return v4l2_subdev_state_get_format(sd_state, pad);
 	else
 		return &priv->format_mbus[pad];
 }
@@ -780,11 +780,19 @@ static int vdic_link_validate(struct v4l2_subdev *sd,
 	return ret;
 }
 
-static int vdic_g_frame_interval(struct v4l2_subdev *sd,
-				struct v4l2_subdev_frame_interval *fi)
+static int vdic_get_frame_interval(struct v4l2_subdev *sd,
+				   struct v4l2_subdev_state *sd_state,
+				   struct v4l2_subdev_frame_interval *fi)
 {
 	struct vdic_priv *priv = v4l2_get_subdevdata(sd);
 
+	/*
+	 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+	 * subdev active state API.
+	 */
+	if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+		return -EINVAL;
+
 	if (fi->pad >= VDIC_NUM_PADS)
 		return -EINVAL;
 
@@ -797,13 +805,21 @@ static int vdic_g_frame_interval(struct v4l2_subdev *sd,
 	return 0;
 }
 
-static int vdic_s_frame_interval(struct v4l2_subdev *sd,
-				struct v4l2_subdev_frame_interval *fi)
+static int vdic_set_frame_interval(struct v4l2_subdev *sd,
+				   struct v4l2_subdev_state *sd_state,
+				   struct v4l2_subdev_frame_interval *fi)
 {
 	struct vdic_priv *priv = v4l2_get_subdevdata(sd);
 	struct v4l2_fract *input_fi, *output_fi;
 	int ret = 0;
 
+	/*
+	 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+	 * subdev active state API.
+	 */
+	if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+		return -EINVAL;
+
 	mutex_lock(&priv->lock);
 
 	input_fi = &priv->frame_interval[priv->active_input_pad];
@@ -882,16 +898,15 @@ static void vdic_unregistered(struct v4l2_subdev *sd)
 }
 
 static const struct v4l2_subdev_pad_ops vdic_pad_ops = {
-	.init_cfg = imx_media_init_cfg,
 	.enum_mbus_code = vdic_enum_mbus_code,
 	.get_fmt = vdic_get_fmt,
 	.set_fmt = vdic_set_fmt,
+	.get_frame_interval = vdic_get_frame_interval,
+	.set_frame_interval = vdic_set_frame_interval,
 	.link_validate = vdic_link_validate,
 };
 
 static const struct v4l2_subdev_video_ops vdic_video_ops = {
-	.g_frame_interval = vdic_g_frame_interval,
-	.s_frame_interval = vdic_s_frame_interval,
 	.s_stream = vdic_s_stream,
 };
 
@@ -906,6 +921,7 @@ static const struct v4l2_subdev_ops vdic_subdev_ops = {
 };
 
 static const struct v4l2_subdev_internal_ops vdic_internal_ops = {
+	.init_state = imx_media_init_state,
 	.registered = vdic_registered,
 	.unregistered = vdic_unregistered,
 };
diff --git a/drivers/staging/media/imx/imx-media.h b/drivers/staging/media/imx/imx-media.h
index 2640cd34dce26..f095d9134fee4 100644
--- a/drivers/staging/media/imx/imx-media.h
+++ b/drivers/staging/media/imx/imx-media.h
@@ -192,8 +192,8 @@ static inline int imx_media_enum_ipu_formats(u32 *code, u32 index,
 int imx_media_init_mbus_fmt(struct v4l2_mbus_framefmt *mbus,
 			    u32 width, u32 height, u32 code, u32 field,
 			    const struct imx_media_pixfmt **cc);
-int imx_media_init_cfg(struct v4l2_subdev *sd,
-		       struct v4l2_subdev_state *sd_state);
+int imx_media_init_state(struct v4l2_subdev *sd,
+			 struct v4l2_subdev_state *sd_state);
 void imx_media_try_colorimetry(struct v4l2_mbus_framefmt *tryfmt,
 			       bool ic_route);
 int imx_media_mbus_fmt_to_pix_fmt(struct v4l2_pix_format *pix,
diff --git a/drivers/staging/media/imx/imx6-mipi-csi2.c b/drivers/staging/media/imx/imx6-mipi-csi2.c
index b2d8476d83a0a..0d8b420616235 100644
--- a/drivers/staging/media/imx/imx6-mipi-csi2.c
+++ b/drivers/staging/media/imx/imx6-mipi-csi2.c
@@ -501,7 +501,7 @@ __csi2_get_fmt(struct csi2_dev *csi2, struct v4l2_subdev_state *sd_state,
 	       unsigned int pad, enum v4l2_subdev_format_whence which)
 {
 	if (which == V4L2_SUBDEV_FORMAT_TRY)
-		return v4l2_subdev_get_try_format(&csi2->sd, sd_state, pad);
+		return v4l2_subdev_state_get_format(sd_state, pad);
 	else
 		return &csi2->format_mbus;
 }
@@ -619,7 +619,6 @@ static const struct v4l2_subdev_video_ops csi2_video_ops = {
 };
 
 static const struct v4l2_subdev_pad_ops csi2_pad_ops = {
-	.init_cfg = imx_media_init_cfg,
 	.get_fmt = csi2_get_fmt,
 	.set_fmt = csi2_set_fmt,
 };
@@ -631,6 +630,7 @@ static const struct v4l2_subdev_ops csi2_subdev_ops = {
 };
 
 static const struct v4l2_subdev_internal_ops csi2_internal_ops = {
+	.init_state = imx_media_init_state,
 	.registered = csi2_registered,
 };
 
diff --git a/drivers/staging/media/ipu3/ipu3-v4l2.c b/drivers/staging/media/ipu3/ipu3-v4l2.c
index e530767e80a5d..a66f034380c05 100644
--- a/drivers/staging/media/ipu3/ipu3-v4l2.c
+++ b/drivers/staging/media/ipu3/ipu3-v4l2.c
@@ -36,7 +36,7 @@ static int imgu_subdev_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
 	/* Initialize try_fmt */
 	for (i = 0; i < IMGU_NODE_NUM; i++) {
 		struct v4l2_mbus_framefmt *try_fmt =
-			v4l2_subdev_get_try_format(sd, fh->state, i);
+			v4l2_subdev_state_get_format(fh->state, i);
 
 		try_fmt->width = try_crop.width;
 		try_fmt->height = try_crop.height;
@@ -44,8 +44,8 @@ static int imgu_subdev_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
 		try_fmt->field = V4L2_FIELD_NONE;
 	}
 
-	*v4l2_subdev_get_try_crop(sd, fh->state, IMGU_NODE_IN) = try_crop;
-	*v4l2_subdev_get_try_compose(sd, fh->state, IMGU_NODE_IN) = try_crop;
+	*v4l2_subdev_state_get_crop(fh->state, IMGU_NODE_IN) = try_crop;
+	*v4l2_subdev_state_get_compose(fh->state, IMGU_NODE_IN) = try_crop;
 
 	return 0;
 }
@@ -136,7 +136,7 @@ static int imgu_subdev_get_fmt(struct v4l2_subdev *sd,
 	if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) {
 		fmt->format = imgu_pipe->nodes[pad].pad_fmt;
 	} else {
-		mf = v4l2_subdev_get_try_format(sd, sd_state, pad);
+		mf = v4l2_subdev_state_get_format(sd_state, pad);
 		fmt->format = *mf;
 	}
 
@@ -161,7 +161,7 @@ static int imgu_subdev_set_fmt(struct v4l2_subdev *sd,
 
 	imgu_pipe = &imgu->imgu_pipe[pipe];
 	if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
-		mf = v4l2_subdev_get_try_format(sd, sd_state, pad);
+		mf = v4l2_subdev_state_get_format(sd_state, pad);
 	else
 		mf = &imgu_pipe->nodes[pad].pad_fmt;
 
@@ -194,7 +194,7 @@ imgu_subdev_get_crop(struct imgu_v4l2_subdev *sd,
 		     enum v4l2_subdev_format_whence which)
 {
 	if (which == V4L2_SUBDEV_FORMAT_TRY)
-		return v4l2_subdev_get_try_crop(&sd->subdev, sd_state, pad);
+		return v4l2_subdev_state_get_crop(sd_state, pad);
 	else
 		return &sd->rect.eff;
 }
@@ -205,7 +205,7 @@ imgu_subdev_get_compose(struct imgu_v4l2_subdev *sd,
 			enum v4l2_subdev_format_whence which)
 {
 	if (which == V4L2_SUBDEV_FORMAT_TRY)
-		return v4l2_subdev_get_try_compose(&sd->subdev, sd_state, pad);
+		return v4l2_subdev_state_get_compose(sd_state, pad);
 	else
 		return &sd->rect.bds;
 }
@@ -1198,7 +1198,7 @@ static int imgu_v4l2_node_setup(struct imgu_device *imgu, unsigned int pipe,
 	vbq->buf_struct_size = imgu->buf_struct_size;
 	vbq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 	/* can streamon w/o buffers */
-	vbq->min_buffers_needed = 0;
+	vbq->min_queued_buffers = 0;
 	vbq->drv_priv = imgu;
 	vbq->lock = &node->lock;
 	r = vb2_queue_init(vbq);
diff --git a/drivers/staging/media/meson/vdec/vdec.c b/drivers/staging/media/meson/vdec/vdec.c
index 219185aaa588a..de3e0345ab7c6 100644
--- a/drivers/staging/media/meson/vdec/vdec.c
+++ b/drivers/staging/media/meson/vdec/vdec.c
@@ -167,23 +167,24 @@ static void process_num_buffers(struct vb2_queue *q,
 				bool is_reqbufs)
 {
 	const struct amvdec_format *fmt_out = sess->fmt_out;
-	unsigned int buffers_total = q->num_buffers + *num_buffers;
+	unsigned int q_num_bufs = vb2_get_num_buffers(q);
+	unsigned int buffers_total = q_num_bufs + *num_buffers;
 	u32 min_buf_capture = v4l2_ctrl_g_ctrl(sess->ctrl_min_buf_capture);
 
-	if (q->num_buffers + *num_buffers < min_buf_capture)
-		*num_buffers = min_buf_capture - q->num_buffers;
+	if (q_num_bufs + *num_buffers < min_buf_capture)
+		*num_buffers = min_buf_capture - q_num_bufs;
 	if (is_reqbufs && buffers_total < fmt_out->min_buffers)
-		*num_buffers = fmt_out->min_buffers - q->num_buffers;
+		*num_buffers = fmt_out->min_buffers - q_num_bufs;
 	if (buffers_total > fmt_out->max_buffers)
-		*num_buffers = fmt_out->max_buffers - q->num_buffers;
+		*num_buffers = fmt_out->max_buffers - q_num_bufs;
 
 	/* We need to program the complete CAPTURE buffer list
 	 * in registers during start_streaming, and the firmwares
 	 * are free to choose any of them to write frames to. As such,
 	 * we need all of them to be queued into the driver
 	 */
-	sess->num_dst_bufs = q->num_buffers + *num_buffers;
-	q->min_buffers_needed = max(fmt_out->min_buffers, sess->num_dst_bufs);
+	sess->num_dst_bufs = q_num_bufs + *num_buffers;
+	q->min_queued_buffers = max(fmt_out->min_buffers, sess->num_dst_bufs);
 }
 
 static int vdec_queue_setup(struct vb2_queue *q, unsigned int *num_buffers,
@@ -824,7 +825,7 @@ static int m2m_queue_init(void *priv, struct vb2_queue *src_vq,
 	src_vq->mem_ops = &vb2_dma_contig_memops;
 	src_vq->drv_priv = sess;
 	src_vq->buf_struct_size = sizeof(struct dummy_buf);
-	src_vq->min_buffers_needed = 1;
+	src_vq->min_queued_buffers = 1;
 	src_vq->dev = sess->core->dev;
 	src_vq->lock = &sess->lock;
 	ret = vb2_queue_init(src_vq);
@@ -838,7 +839,7 @@ static int m2m_queue_init(void *priv, struct vb2_queue *src_vq,
 	dst_vq->mem_ops = &vb2_dma_contig_memops;
 	dst_vq->drv_priv = sess;
 	dst_vq->buf_struct_size = sizeof(struct dummy_buf);
-	dst_vq->min_buffers_needed = 1;
+	dst_vq->min_queued_buffers = 1;
 	dst_vq->dev = sess->core->dev;
 	dst_vq->lock = &sess->lock;
 	return vb2_queue_init(dst_vq);
diff --git a/drivers/staging/media/omap4iss/iss_csi2.c b/drivers/staging/media/omap4iss/iss_csi2.c
index d2844414de4f7..0e6c5bd81930c 100644
--- a/drivers/staging/media/omap4iss/iss_csi2.c
+++ b/drivers/staging/media/omap4iss/iss_csi2.c
@@ -830,8 +830,7 @@ __csi2_get_format(struct iss_csi2_device *csi2,
 		  enum v4l2_subdev_format_whence which)
 {
 	if (which == V4L2_SUBDEV_FORMAT_TRY)
-		return v4l2_subdev_get_try_format(&csi2->subdev, sd_state,
-						  pad);
+		return v4l2_subdev_state_get_format(sd_state, pad);
 
 	return &csi2->formats[pad];
 }
@@ -891,7 +890,7 @@ csi2_try_format(struct iss_csi2_device *csi2,
 /*
  * csi2_enum_mbus_code - Handle pixel format enumeration
  * @sd     : pointer to v4l2 subdev structure
- * @cfg    : V4L2 subdev pad config
+ * @sd_state: V4L2 subdev state
  * @code   : pointer to v4l2_subdev_mbus_code_enum structure
  * return -EINVAL or zero on success
  */
@@ -965,7 +964,7 @@ static int csi2_enum_frame_size(struct v4l2_subdev *sd,
 /*
  * csi2_get_format - Handle get format by pads subdev method
  * @sd : pointer to v4l2 subdev structure
- * @cfg: V4L2 subdev pad config
+ * @sd_state: V4L2 subdev state
  * @fmt: pointer to v4l2 subdev format structure
  * return -EINVAL or zero on success
  */
@@ -987,7 +986,7 @@ static int csi2_get_format(struct v4l2_subdev *sd,
 /*
  * csi2_set_format - Handle set format by pads subdev method
  * @sd : pointer to v4l2 subdev structure
- * @cfg: V4L2 subdev pad config
+ * @sd_state: V4L2 subdev state
  * @fmt: pointer to v4l2 subdev format structure
  * return -EINVAL or zero on success
  */
diff --git a/drivers/staging/media/omap4iss/iss_ipipe.c b/drivers/staging/media/omap4iss/iss_ipipe.c
index 23f707cb336f5..4a4eae290d65a 100644
--- a/drivers/staging/media/omap4iss/iss_ipipe.c
+++ b/drivers/staging/media/omap4iss/iss_ipipe.c
@@ -180,8 +180,7 @@ __ipipe_get_format(struct iss_ipipe_device *ipipe,
 		   enum v4l2_subdev_format_whence which)
 {
 	if (which == V4L2_SUBDEV_FORMAT_TRY)
-		return v4l2_subdev_get_try_format(&ipipe->subdev, sd_state,
-						  pad);
+		return v4l2_subdev_state_get_format(sd_state, pad);
 
 	return &ipipe->formats[pad];
 }
@@ -189,7 +188,7 @@ __ipipe_get_format(struct iss_ipipe_device *ipipe,
 /*
  * ipipe_try_format - Try video format on a pad
  * @ipipe: ISS IPIPE device
- * @cfg: V4L2 subdev pad config
+ * @sd_state: V4L2 subdev state
  * @pad: Pad number
  * @fmt: Format
  */
@@ -240,7 +239,7 @@ ipipe_try_format(struct iss_ipipe_device *ipipe,
 /*
  * ipipe_enum_mbus_code - Handle pixel format enumeration
  * @sd     : pointer to v4l2 subdev structure
- * @cfg    : V4L2 subdev pad config
+ * @sd_state: V4L2 subdev state
  * @code   : pointer to v4l2_subdev_mbus_code_enum structure
  * return -EINVAL or zero on success
  */
@@ -304,7 +303,7 @@ static int ipipe_enum_frame_size(struct v4l2_subdev *sd,
 /*
  * ipipe_get_format - Retrieve the video format on a pad
  * @sd : ISP IPIPE V4L2 subdevice
- * @cfg: V4L2 subdev pad config
+ * @sd_state: V4L2 subdev state
  * @fmt: Format
  *
  * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
@@ -328,7 +327,7 @@ static int ipipe_get_format(struct v4l2_subdev *sd,
 /*
  * ipipe_set_format - Set the video format on a pad
  * @sd : ISP IPIPE V4L2 subdevice
- * @cfg: V4L2 subdev pad config
+ * @sd_state: V4L2 subdev state
  * @fmt: Format
  *
  * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
diff --git a/drivers/staging/media/omap4iss/iss_ipipeif.c b/drivers/staging/media/omap4iss/iss_ipipeif.c
index 5e7f25cd53acf..8fa99532d9d4a 100644
--- a/drivers/staging/media/omap4iss/iss_ipipeif.c
+++ b/drivers/staging/media/omap4iss/iss_ipipeif.c
@@ -361,15 +361,14 @@ __ipipeif_get_format(struct iss_ipipeif_device *ipipeif,
 		     enum v4l2_subdev_format_whence which)
 {
 	if (which == V4L2_SUBDEV_FORMAT_TRY)
-		return v4l2_subdev_get_try_format(&ipipeif->subdev, sd_state,
-						  pad);
+		return v4l2_subdev_state_get_format(sd_state, pad);
 	return &ipipeif->formats[pad];
 }
 
 /*
  * ipipeif_try_format - Try video format on a pad
  * @ipipeif: ISS IPIPEIF device
- * @cfg: V4L2 subdev pad config
+ * @sd_state: V4L2 subdev state
  * @pad: Pad number
  * @fmt: Format
  */
@@ -440,7 +439,7 @@ ipipeif_try_format(struct iss_ipipeif_device *ipipeif,
 /*
  * ipipeif_enum_mbus_code - Handle pixel format enumeration
  * @sd     : pointer to v4l2 subdev structure
- * @cfg    : V4L2 subdev pad config
+ * @sd_state: V4L2 subdev state
  * @code   : pointer to v4l2_subdev_mbus_code_enum structure
  * return -EINVAL or zero on success
  */
@@ -512,7 +511,7 @@ static int ipipeif_enum_frame_size(struct v4l2_subdev *sd,
 /*
  * ipipeif_get_format - Retrieve the video format on a pad
  * @sd : ISP IPIPEIF V4L2 subdevice
- * @cfg: V4L2 subdev pad config
+ * @sd_state: V4L2 subdev state
  * @fmt: Format
  *
  * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
@@ -536,7 +535,7 @@ static int ipipeif_get_format(struct v4l2_subdev *sd,
 /*
  * ipipeif_set_format - Set the video format on a pad
  * @sd : ISP IPIPEIF V4L2 subdevice
- * @cfg: V4L2 subdev pad config
+ * @sd_state: V4L2 subdev state
  * @fmt: Format
  *
  * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
diff --git a/drivers/staging/media/omap4iss/iss_resizer.c b/drivers/staging/media/omap4iss/iss_resizer.c
index a5f8f9f1ab16d..58e698ef91085 100644
--- a/drivers/staging/media/omap4iss/iss_resizer.c
+++ b/drivers/staging/media/omap4iss/iss_resizer.c
@@ -420,15 +420,14 @@ __resizer_get_format(struct iss_resizer_device *resizer,
 		     enum v4l2_subdev_format_whence which)
 {
 	if (which == V4L2_SUBDEV_FORMAT_TRY)
-		return v4l2_subdev_get_try_format(&resizer->subdev, sd_state,
-						  pad);
+		return v4l2_subdev_state_get_format(sd_state, pad);
 	return &resizer->formats[pad];
 }
 
 /*
  * resizer_try_format - Try video format on a pad
  * @resizer: ISS RESIZER device
- * @cfg: V4L2 subdev pad config
+ * @sd_state: V4L2 subdev state
  * @pad: Pad number
  * @fmt: Format
  */
@@ -489,7 +488,7 @@ resizer_try_format(struct iss_resizer_device *resizer,
 /*
  * resizer_enum_mbus_code - Handle pixel format enumeration
  * @sd     : pointer to v4l2 subdev structure
- * @cfg: V4L2 subdev pad config
+ * @sd_state: V4L2 subdev state
  * @code   : pointer to v4l2_subdev_mbus_code_enum structure
  * return -EINVAL or zero on success
  */
@@ -572,7 +571,7 @@ static int resizer_enum_frame_size(struct v4l2_subdev *sd,
 /*
  * resizer_get_format - Retrieve the video format on a pad
  * @sd : ISP RESIZER V4L2 subdevice
- * @cfg: V4L2 subdev pad config
+ * @sd_state: V4L2 subdev state
  * @fmt: Format
  *
  * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
@@ -596,7 +595,7 @@ static int resizer_get_format(struct v4l2_subdev *sd,
 /*
  * resizer_set_format - Set the video format on a pad
  * @sd : ISP RESIZER V4L2 subdevice
- * @cfg: V4L2 subdev pad config
+ * @sd_state: V4L2 subdev state
  * @fmt: Format
  *
  * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
diff --git a/drivers/staging/media/rkvdec/Kconfig b/drivers/staging/media/rkvdec/Kconfig
index e963d60cc6ad5..5f3bdd848a2cf 100644
--- a/drivers/staging/media/rkvdec/Kconfig
+++ b/drivers/staging/media/rkvdec/Kconfig
@@ -4,7 +4,6 @@ config VIDEO_ROCKCHIP_VDEC
 	depends on ARCH_ROCKCHIP || COMPILE_TEST
 	depends on VIDEO_DEV
 	select MEDIA_CONTROLLER
-	select MEDIA_CONTROLLER_REQUEST_API
 	select VIDEOBUF2_DMA_CONTIG
 	select VIDEOBUF2_VMALLOC
 	select V4L2_MEM2MEM_DEV
diff --git a/drivers/staging/media/rkvdec/rkvdec.c b/drivers/staging/media/rkvdec/rkvdec.c
index 84a41792cb4b8..ac398b5a97360 100644
--- a/drivers/staging/media/rkvdec/rkvdec.c
+++ b/drivers/staging/media/rkvdec/rkvdec.c
@@ -461,6 +461,9 @@ static const struct v4l2_ioctl_ops rkvdec_ioctl_ops = {
 
 	.vidioc_streamon = v4l2_m2m_ioctl_streamon,
 	.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
+
+	.vidioc_decoder_cmd = v4l2_m2m_ioctl_stateless_decoder_cmd,
+	.vidioc_try_decoder_cmd = v4l2_m2m_ioctl_stateless_try_decoder_cmd,
 };
 
 static int rkvdec_queue_setup(struct vb2_queue *vq, unsigned int *num_buffers,
diff --git a/drivers/staging/media/starfive/Kconfig b/drivers/staging/media/starfive/Kconfig
new file mode 100644
index 0000000000000..34727cf560722
--- /dev/null
+++ b/drivers/staging/media/starfive/Kconfig
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+comment "StarFive media platform drivers"
+
+source "drivers/staging/media/starfive/camss/Kconfig"
diff --git a/drivers/staging/media/starfive/Makefile b/drivers/staging/media/starfive/Makefile
new file mode 100644
index 0000000000000..4639fa1bca325
--- /dev/null
+++ b/drivers/staging/media/starfive/Makefile
@@ -0,0 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-y += camss/
diff --git a/drivers/staging/media/starfive/camss/Kconfig b/drivers/staging/media/starfive/camss/Kconfig
new file mode 100644
index 0000000000000..9ea5708fe4095
--- /dev/null
+++ b/drivers/staging/media/starfive/camss/Kconfig
@@ -0,0 +1,18 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config VIDEO_STARFIVE_CAMSS
+	tristate "Starfive Camera Subsystem driver"
+	depends on V4L_PLATFORM_DRIVERS
+	depends on VIDEO_DEV && OF
+	depends on HAS_DMA
+	depends on PM
+	depends on ARCH_STARFIVE || COMPILE_TEST
+	select MEDIA_CONTROLLER
+	select VIDEO_V4L2_SUBDEV_API
+	select VIDEOBUF2_DMA_CONTIG
+	select V4L2_FWNODE
+	help
+	   Enable this to support for the Starfive Camera subsystem
+	   found on Starfive JH7110 SoC.
+
+	   To compile this driver as a module, choose M here: the
+	   module will be called starfive-camss.
diff --git a/drivers/staging/media/starfive/camss/Makefile b/drivers/staging/media/starfive/camss/Makefile
new file mode 100644
index 0000000000000..005790202e7b8
--- /dev/null
+++ b/drivers/staging/media/starfive/camss/Makefile
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for StarFive Camera Subsystem driver
+#
+
+starfive-camss-objs += \
+		stf-camss.o \
+		stf-capture.o \
+		stf-isp.o \
+		stf-isp-hw-ops.o \
+		stf-video.o
+
+obj-$(CONFIG_VIDEO_STARFIVE_CAMSS) += starfive-camss.o
diff --git a/drivers/staging/media/starfive/camss/TODO.txt b/drivers/staging/media/starfive/camss/TODO.txt
new file mode 100644
index 0000000000000..7d459f4f09d00
--- /dev/null
+++ b/drivers/staging/media/starfive/camss/TODO.txt
@@ -0,0 +1,4 @@
+Unstaging requirements:
+- Add userspace support which demonstrates the ability to receive statistics and
+  adapt hardware modules configuration accordingly;
+- Add documentation for description of the statistics data structures;
diff --git a/drivers/staging/media/starfive/camss/stf-camss.c b/drivers/staging/media/starfive/camss/stf-camss.c
new file mode 100644
index 0000000000000..a587f860101ae
--- /dev/null
+++ b/drivers/staging/media/starfive/camss/stf-camss.c
@@ -0,0 +1,436 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * stf_camss.c
+ *
+ * Starfive Camera Subsystem driver
+ *
+ * Copyright (C) 2021-2023 StarFive Technology Co., Ltd.
+ *
+ * Author: Jack Zhu <jack.zhu@starfivetech.com>
+ * Author: Changhuang Liang <changhuang.liang@starfivetech.com>
+ *
+ */
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_graph.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-fwnode.h>
+#include <media/v4l2-mc.h>
+
+#include "stf-camss.h"
+
+static const char * const stfcamss_clocks[] = {
+	"wrapper_clk_c",
+	"ispcore_2x",
+	"isp_axi",
+};
+
+static const char * const stfcamss_resets[] = {
+	"wrapper_p",
+	"wrapper_c",
+	"axiwr",
+	"isp_top_n",
+	"isp_top_axi",
+};
+
+static const struct stf_isr_data stf_isrs[] = {
+	{"wr_irq", stf_wr_irq_handler},
+	{"isp_irq", stf_isp_irq_handler},
+	{"line_irq", stf_line_irq_handler},
+};
+
+static int stfcamss_get_mem_res(struct stfcamss *stfcamss)
+{
+	struct platform_device *pdev = to_platform_device(stfcamss->dev);
+
+	stfcamss->syscon_base =
+		devm_platform_ioremap_resource_byname(pdev, "syscon");
+	if (IS_ERR(stfcamss->syscon_base))
+		return PTR_ERR(stfcamss->syscon_base);
+
+	stfcamss->isp_base = devm_platform_ioremap_resource_byname(pdev, "isp");
+	if (IS_ERR(stfcamss->isp_base))
+		return PTR_ERR(stfcamss->isp_base);
+
+	return 0;
+}
+
+/*
+ * stfcamss_of_parse_endpoint_node - Parse port endpoint node
+ * @dev: Device
+ * @node: Device node to be parsed
+ * @csd: Parsed data from port endpoint node
+ *
+ * Return 0 on success or a negative error code on failure
+ */
+static int stfcamss_of_parse_endpoint_node(struct stfcamss *stfcamss,
+					   struct device_node *node,
+					   struct stfcamss_async_subdev *csd)
+{
+	struct v4l2_fwnode_endpoint vep = { { 0 } };
+	int ret;
+
+	ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(node), &vep);
+	if (ret) {
+		dev_err(stfcamss->dev, "endpoint not defined at %pOF\n", node);
+		return ret;
+	}
+
+	csd->port = vep.base.port;
+
+	return 0;
+}
+
+/*
+ * stfcamss_of_parse_ports - Parse ports node
+ * @stfcamss: STFCAMSS device
+ *
+ * Return number of "port" nodes found in "ports" node
+ */
+static int stfcamss_of_parse_ports(struct stfcamss *stfcamss)
+{
+	struct device_node *node = NULL;
+	int ret, num_subdevs = 0;
+
+	for_each_endpoint_of_node(stfcamss->dev->of_node, node) {
+		struct stfcamss_async_subdev *csd;
+
+		if (!of_device_is_available(node))
+			continue;
+
+		csd = v4l2_async_nf_add_fwnode_remote(&stfcamss->notifier,
+						      of_fwnode_handle(node),
+						      struct stfcamss_async_subdev);
+		if (IS_ERR(csd)) {
+			ret = PTR_ERR(csd);
+			dev_err(stfcamss->dev, "failed to add async notifier\n");
+			goto err_cleanup;
+		}
+
+		ret = stfcamss_of_parse_endpoint_node(stfcamss, node, csd);
+		if (ret)
+			goto err_cleanup;
+
+		num_subdevs++;
+	}
+
+	return num_subdevs;
+
+err_cleanup:
+	of_node_put(node);
+	return ret;
+}
+
+static int stfcamss_register_devs(struct stfcamss *stfcamss)
+{
+	struct stf_capture *cap_yuv = &stfcamss->captures[STF_CAPTURE_YUV];
+	struct stf_isp_dev *isp_dev = &stfcamss->isp_dev;
+	int ret;
+
+	ret = stf_isp_register(isp_dev, &stfcamss->v4l2_dev);
+	if (ret < 0) {
+		dev_err(stfcamss->dev,
+			"failed to register stf isp%d entity: %d\n", 0, ret);
+		return ret;
+	}
+
+	ret = stf_capture_register(stfcamss, &stfcamss->v4l2_dev);
+	if (ret < 0) {
+		dev_err(stfcamss->dev,
+			"failed to register capture: %d\n", ret);
+		goto err_isp_unregister;
+	}
+
+	ret = media_create_pad_link(&isp_dev->subdev.entity, STF_ISP_PAD_SRC,
+				    &cap_yuv->video.vdev.entity, 0, 0);
+	if (ret)
+		goto err_cap_unregister;
+
+	cap_yuv->video.source_subdev = &isp_dev->subdev;
+
+	return ret;
+
+err_cap_unregister:
+	stf_capture_unregister(stfcamss);
+err_isp_unregister:
+	stf_isp_unregister(&stfcamss->isp_dev);
+
+	return ret;
+}
+
+static void stfcamss_unregister_devs(struct stfcamss *stfcamss)
+{
+	stf_isp_unregister(&stfcamss->isp_dev);
+	stf_capture_unregister(stfcamss);
+}
+
+static int stfcamss_subdev_notifier_bound(struct v4l2_async_notifier *async,
+					  struct v4l2_subdev *subdev,
+					  struct v4l2_async_connection *asc)
+{
+	struct stfcamss *stfcamss =
+		container_of(async, struct stfcamss, notifier);
+	struct stfcamss_async_subdev *csd =
+		container_of(asc, struct stfcamss_async_subdev, asd);
+	enum stf_port_num port = csd->port;
+	struct stf_isp_dev *isp_dev = &stfcamss->isp_dev;
+	struct stf_capture *cap_raw = &stfcamss->captures[STF_CAPTURE_RAW];
+	struct media_pad *pad;
+	int ret;
+
+	if (port == STF_PORT_CSI2RX) {
+		pad = &isp_dev->pads[STF_ISP_PAD_SINK];
+	} else {
+		dev_err(stfcamss->dev, "not support port %d\n", port);
+		return -EPERM;
+	}
+
+	ret = v4l2_create_fwnode_links_to_pad(subdev, pad, 0);
+	if (ret)
+		return ret;
+
+	ret = media_create_pad_link(&subdev->entity, 1,
+				    &cap_raw->video.vdev.entity, 0, 0);
+	if (ret)
+		return ret;
+
+	isp_dev->source_subdev = subdev;
+	cap_raw->video.source_subdev = subdev;
+
+	return 0;
+}
+
+static int stfcamss_subdev_notifier_complete(struct v4l2_async_notifier *ntf)
+{
+	struct stfcamss *stfcamss =
+		container_of(ntf, struct stfcamss, notifier);
+
+	return v4l2_device_register_subdev_nodes(&stfcamss->v4l2_dev);
+}
+
+static const struct v4l2_async_notifier_operations
+stfcamss_subdev_notifier_ops = {
+	.bound = stfcamss_subdev_notifier_bound,
+	.complete = stfcamss_subdev_notifier_complete,
+};
+
+static void stfcamss_mc_init(struct platform_device *pdev,
+			     struct stfcamss *stfcamss)
+{
+	stfcamss->media_dev.dev = stfcamss->dev;
+	strscpy(stfcamss->media_dev.model, "Starfive Camera Subsystem",
+		sizeof(stfcamss->media_dev.model));
+	media_device_init(&stfcamss->media_dev);
+
+	stfcamss->v4l2_dev.mdev = &stfcamss->media_dev;
+}
+
+/*
+ * stfcamss_probe - Probe STFCAMSS platform device
+ * @pdev: Pointer to STFCAMSS platform device
+ *
+ * Return 0 on success or a negative error code on failure
+ */
+static int stfcamss_probe(struct platform_device *pdev)
+{
+	struct stfcamss *stfcamss;
+	struct device *dev = &pdev->dev;
+	int ret, num_subdevs;
+	unsigned int i;
+
+	stfcamss = devm_kzalloc(dev, sizeof(*stfcamss), GFP_KERNEL);
+	if (!stfcamss)
+		return -ENOMEM;
+
+	stfcamss->dev = dev;
+
+	for (i = 0; i < ARRAY_SIZE(stf_isrs); ++i) {
+		int irq;
+
+		irq = platform_get_irq(pdev, i);
+		if (irq < 0)
+			return irq;
+
+		ret = devm_request_irq(stfcamss->dev, irq, stf_isrs[i].isr, 0,
+				       stf_isrs[i].name, stfcamss);
+		if (ret) {
+			dev_err(dev, "request irq failed: %d\n", ret);
+			return ret;
+		}
+	}
+
+	stfcamss->nclks = ARRAY_SIZE(stfcamss->sys_clk);
+	for (i = 0; i < stfcamss->nclks; ++i)
+		stfcamss->sys_clk[i].id = stfcamss_clocks[i];
+	ret = devm_clk_bulk_get(dev, stfcamss->nclks, stfcamss->sys_clk);
+	if (ret) {
+		dev_err(dev, "Failed to get clk controls\n");
+		return ret;
+	}
+
+	stfcamss->nrsts = ARRAY_SIZE(stfcamss->sys_rst);
+	for (i = 0; i < stfcamss->nrsts; ++i)
+		stfcamss->sys_rst[i].id = stfcamss_resets[i];
+	ret = devm_reset_control_bulk_get_shared(dev, stfcamss->nrsts,
+						 stfcamss->sys_rst);
+	if (ret) {
+		dev_err(dev, "Failed to get reset controls\n");
+		return ret;
+	}
+
+	ret = stfcamss_get_mem_res(stfcamss);
+	if (ret) {
+		dev_err(dev, "Could not map registers\n");
+		return ret;
+	}
+
+	platform_set_drvdata(pdev, stfcamss);
+
+	v4l2_async_nf_init(&stfcamss->notifier, &stfcamss->v4l2_dev);
+
+	num_subdevs = stfcamss_of_parse_ports(stfcamss);
+	if (num_subdevs < 0) {
+		ret = -ENODEV;
+		dev_err(dev, "Failed to get sub devices: %d\n", ret);
+		goto err_cleanup_notifier;
+	}
+
+	ret = stf_isp_init(stfcamss);
+	if (ret < 0) {
+		dev_err(dev, "Failed to init isp: %d\n", ret);
+		goto err_cleanup_notifier;
+	}
+
+	stfcamss_mc_init(pdev, stfcamss);
+
+	ret = v4l2_device_register(stfcamss->dev, &stfcamss->v4l2_dev);
+	if (ret < 0) {
+		dev_err(dev, "Failed to register V4L2 device: %d\n", ret);
+		goto err_cleanup_media_device;
+	}
+
+	ret = media_device_register(&stfcamss->media_dev);
+	if (ret) {
+		dev_err(dev, "Failed to register media device: %d\n", ret);
+		goto err_unregister_device;
+	}
+
+	ret = stfcamss_register_devs(stfcamss);
+	if (ret < 0) {
+		dev_err(dev, "Failed to register subdevice: %d\n", ret);
+		goto err_unregister_media_dev;
+	}
+
+	pm_runtime_enable(dev);
+
+	stfcamss->notifier.ops = &stfcamss_subdev_notifier_ops;
+	ret = v4l2_async_nf_register(&stfcamss->notifier);
+	if (ret) {
+		dev_err(dev, "Failed to register async subdev nodes: %d\n",
+			ret);
+		pm_runtime_disable(dev);
+		goto err_unregister_subdevs;
+	}
+
+	return 0;
+
+err_unregister_subdevs:
+	stfcamss_unregister_devs(stfcamss);
+err_unregister_media_dev:
+	media_device_unregister(&stfcamss->media_dev);
+err_unregister_device:
+	v4l2_device_unregister(&stfcamss->v4l2_dev);
+err_cleanup_media_device:
+	media_device_cleanup(&stfcamss->media_dev);
+err_cleanup_notifier:
+	v4l2_async_nf_cleanup(&stfcamss->notifier);
+	return ret;
+}
+
+/*
+ * stfcamss_remove - Remove STFCAMSS platform device
+ * @pdev: Pointer to STFCAMSS platform device
+ *
+ * Always returns 0.
+ */
+static int stfcamss_remove(struct platform_device *pdev)
+{
+	struct stfcamss *stfcamss = platform_get_drvdata(pdev);
+
+	stfcamss_unregister_devs(stfcamss);
+	v4l2_device_unregister(&stfcamss->v4l2_dev);
+	media_device_cleanup(&stfcamss->media_dev);
+	v4l2_async_nf_cleanup(&stfcamss->notifier);
+	pm_runtime_disable(&pdev->dev);
+
+	return 0;
+}
+
+static const struct of_device_id stfcamss_of_match[] = {
+	{ .compatible = "starfive,jh7110-camss" },
+	{ /* sentinel */ },
+};
+
+MODULE_DEVICE_TABLE(of, stfcamss_of_match);
+
+static int __maybe_unused stfcamss_runtime_suspend(struct device *dev)
+{
+	struct stfcamss *stfcamss = dev_get_drvdata(dev);
+	int ret;
+
+	ret = reset_control_bulk_assert(stfcamss->nrsts, stfcamss->sys_rst);
+	if (ret) {
+		dev_err(dev, "reset assert failed\n");
+		return ret;
+	}
+
+	clk_bulk_disable_unprepare(stfcamss->nclks, stfcamss->sys_clk);
+
+	return 0;
+}
+
+static int __maybe_unused stfcamss_runtime_resume(struct device *dev)
+{
+	struct stfcamss *stfcamss = dev_get_drvdata(dev);
+	int ret;
+
+	ret = clk_bulk_prepare_enable(stfcamss->nclks, stfcamss->sys_clk);
+	if (ret) {
+		dev_err(dev, "clock prepare enable failed\n");
+		return ret;
+	}
+
+	ret = reset_control_bulk_deassert(stfcamss->nrsts, stfcamss->sys_rst);
+	if (ret < 0) {
+		dev_err(dev, "cannot deassert resets\n");
+		clk_bulk_disable_unprepare(stfcamss->nclks, stfcamss->sys_clk);
+		return ret;
+	}
+
+	return 0;
+}
+
+static const struct dev_pm_ops stfcamss_pm_ops = {
+	SET_RUNTIME_PM_OPS(stfcamss_runtime_suspend,
+			   stfcamss_runtime_resume,
+			   NULL)
+};
+
+static struct platform_driver stfcamss_driver = {
+	.probe = stfcamss_probe,
+	.remove = stfcamss_remove,
+	.driver = {
+		.name = "starfive-camss",
+		.pm = &stfcamss_pm_ops,
+		.of_match_table = stfcamss_of_match,
+	},
+};
+
+module_platform_driver(stfcamss_driver);
+
+MODULE_AUTHOR("Jack Zhu <jack.zhu@starfivetech.com>");
+MODULE_AUTHOR("Changhuang Liang <changhuang.liang@starfivetech.com>");
+MODULE_DESCRIPTION("StarFive Camera Subsystem driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/staging/media/starfive/camss/stf-camss.h b/drivers/staging/media/starfive/camss/stf-camss.h
new file mode 100644
index 0000000000000..e2b0cfb437bdb
--- /dev/null
+++ b/drivers/staging/media/starfive/camss/stf-camss.h
@@ -0,0 +1,134 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * stf_camss.h
+ *
+ * Starfive Camera Subsystem driver
+ *
+ * Copyright (C) 2021-2023 StarFive Technology Co., Ltd.
+ */
+
+#ifndef STF_CAMSS_H
+#define STF_CAMSS_H
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/reset.h>
+#include <media/media-device.h>
+#include <media/media-entity.h>
+#include <media/v4l2-async.h>
+#include <media/v4l2-device.h>
+
+#include "stf-isp.h"
+#include "stf-capture.h"
+
+enum stf_port_num {
+	STF_PORT_DVP = 0,
+	STF_PORT_CSI2RX
+};
+
+enum stf_clk {
+	STF_CLK_WRAPPER_CLK_C = 0,
+	STF_CLK_ISPCORE_2X,
+	STF_CLK_ISP_AXI,
+	STF_CLK_NUM
+};
+
+enum stf_rst {
+	STF_RST_WRAPPER_P = 0,
+	STF_RST_WRAPPER_C,
+	STF_RST_AXIWR,
+	STF_RST_ISP_TOP_N,
+	STF_RST_ISP_TOP_AXI,
+	STF_RST_NUM
+};
+
+struct stf_isr_data {
+	const char *name;
+	irqreturn_t (*isr)(int irq, void *priv);
+};
+
+struct stfcamss {
+	struct v4l2_device v4l2_dev;
+	struct media_device media_dev;
+	struct media_pipeline pipe;
+	struct device *dev;
+	struct stf_isp_dev isp_dev;
+	struct stf_capture captures[STF_CAPTURE_NUM];
+	struct v4l2_async_notifier notifier;
+	void __iomem *syscon_base;
+	void __iomem *isp_base;
+	struct clk_bulk_data sys_clk[STF_CLK_NUM];
+	int nclks;
+	struct reset_control_bulk_data sys_rst[STF_RST_NUM];
+	int nrsts;
+};
+
+struct stfcamss_async_subdev {
+	struct v4l2_async_connection asd;  /* must be first */
+	enum stf_port_num port;
+};
+
+static inline u32 stf_isp_reg_read(struct stfcamss *stfcamss, u32 reg)
+{
+	return ioread32(stfcamss->isp_base + reg);
+}
+
+static inline void stf_isp_reg_write(struct stfcamss *stfcamss,
+				     u32 reg, u32 val)
+{
+	iowrite32(val, stfcamss->isp_base + reg);
+}
+
+static inline void stf_isp_reg_write_delay(struct stfcamss *stfcamss,
+					   u32 reg, u32 val, u32 delay)
+{
+	iowrite32(val, stfcamss->isp_base + reg);
+	usleep_range(1000 * delay, 1000 * delay + 100);
+}
+
+static inline void stf_isp_reg_set_bit(struct stfcamss *stfcamss,
+				       u32 reg, u32 mask, u32 val)
+{
+	u32 value;
+
+	value = ioread32(stfcamss->isp_base + reg) & ~mask;
+	val &= mask;
+	val |= value;
+	iowrite32(val, stfcamss->isp_base + reg);
+}
+
+static inline void stf_isp_reg_set(struct stfcamss *stfcamss, u32 reg, u32 mask)
+{
+	iowrite32(ioread32(stfcamss->isp_base + reg) | mask,
+		  stfcamss->isp_base + reg);
+}
+
+static inline u32 stf_syscon_reg_read(struct stfcamss *stfcamss, u32 reg)
+{
+	return ioread32(stfcamss->syscon_base + reg);
+}
+
+static inline void stf_syscon_reg_write(struct stfcamss *stfcamss,
+					u32 reg, u32 val)
+{
+	iowrite32(val, stfcamss->syscon_base + reg);
+}
+
+static inline void stf_syscon_reg_set_bit(struct stfcamss *stfcamss,
+					  u32 reg, u32 bit_mask)
+{
+	u32 value;
+
+	value = ioread32(stfcamss->syscon_base + reg);
+	iowrite32(value | bit_mask, stfcamss->syscon_base + reg);
+}
+
+static inline void stf_syscon_reg_clear_bit(struct stfcamss *stfcamss,
+					    u32 reg, u32 bit_mask)
+{
+	u32 value;
+
+	value = ioread32(stfcamss->syscon_base + reg);
+	iowrite32(value & ~bit_mask, stfcamss->syscon_base + reg);
+}
+#endif /* STF_CAMSS_H */
diff --git a/drivers/staging/media/starfive/camss/stf-capture.c b/drivers/staging/media/starfive/camss/stf-capture.c
new file mode 100644
index 0000000000000..70c24b050a1b5
--- /dev/null
+++ b/drivers/staging/media/starfive/camss/stf-capture.c
@@ -0,0 +1,603 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * stf_capture.c
+ *
+ * StarFive Camera Subsystem - capture device
+ *
+ * Copyright (C) 2021-2023 StarFive Technology Co., Ltd.
+ */
+
+#include "stf-camss.h"
+
+static const char * const stf_cap_names[] = {
+	"capture_raw",
+	"capture_yuv",
+};
+
+static const struct stfcamss_format_info stf_wr_fmts[] = {
+	{
+		.code = MEDIA_BUS_FMT_SRGGB10_1X10,
+		.pixelformat = V4L2_PIX_FMT_SRGGB10,
+		.planes = 1,
+		.vsub = { 1 },
+		.bpp = 10,
+	},
+	{
+		.code = MEDIA_BUS_FMT_SGRBG10_1X10,
+		.pixelformat = V4L2_PIX_FMT_SGRBG10,
+		.planes = 1,
+		.vsub = { 1 },
+		.bpp = 10,
+	},
+	{
+		.code = MEDIA_BUS_FMT_SGBRG10_1X10,
+		.pixelformat = V4L2_PIX_FMT_SGBRG10,
+		.planes = 1,
+		.vsub = { 1 },
+		.bpp = 10,
+	},
+	{
+		.code = MEDIA_BUS_FMT_SBGGR10_1X10,
+		.pixelformat = V4L2_PIX_FMT_SBGGR10,
+		.planes = 1,
+		.vsub = { 1 },
+		.bpp = 10,
+	},
+};
+
+static const struct stfcamss_format_info stf_isp_fmts[] = {
+	{
+		.code = MEDIA_BUS_FMT_YUYV8_1_5X8,
+		.pixelformat = V4L2_PIX_FMT_NV12,
+		.planes = 2,
+		.vsub = { 1, 2 },
+		.bpp = 8,
+	},
+};
+
+static inline struct stf_capture *to_stf_capture(struct stfcamss_video *video)
+{
+	return container_of(video, struct stf_capture, video);
+}
+
+static void stf_set_raw_addr(struct stfcamss *stfcamss, dma_addr_t addr)
+{
+	stf_syscon_reg_write(stfcamss, VIN_START_ADDR_O, (long)addr);
+	stf_syscon_reg_write(stfcamss, VIN_START_ADDR_N, (long)addr);
+}
+
+static void stf_set_yuv_addr(struct stfcamss *stfcamss,
+			     dma_addr_t y_addr, dma_addr_t uv_addr)
+{
+	stf_isp_reg_write(stfcamss, ISP_REG_Y_PLANE_START_ADDR, y_addr);
+	stf_isp_reg_write(stfcamss, ISP_REG_UV_PLANE_START_ADDR, uv_addr);
+}
+
+static void stf_init_addrs(struct stfcamss_video *video)
+{
+	struct stf_capture *cap = to_stf_capture(video);
+	struct stf_v_buf *output = &cap->buffers;
+	dma_addr_t addr0, addr1;
+
+	output->active_buf = 0;
+
+	if (!output->buf[0])
+		return;
+
+	addr0 = output->buf[0]->addr[0];
+	addr1 = output->buf[0]->addr[1];
+
+	if (cap->type == STF_CAPTURE_RAW)
+		stf_set_raw_addr(video->stfcamss, addr0);
+	else if (cap->type == STF_CAPTURE_YUV)
+		stf_set_yuv_addr(video->stfcamss, addr0, addr1);
+}
+
+static struct stfcamss_buffer *stf_buf_get_pending(struct stf_v_buf *output)
+{
+	struct stfcamss_buffer *buffer = NULL;
+
+	if (!list_empty(&output->pending_bufs)) {
+		buffer = list_first_entry(&output->pending_bufs,
+					  struct stfcamss_buffer,
+					  queue);
+		list_del(&buffer->queue);
+	}
+
+	return buffer;
+}
+
+static void stf_cap_s_cfg(struct stfcamss_video *video)
+{
+	struct stf_capture *cap = to_stf_capture(video);
+	struct stf_v_buf *output = &cap->buffers;
+	unsigned long flags;
+
+	spin_lock_irqsave(&output->lock, flags);
+
+	output->state = STF_OUTPUT_IDLE;
+	output->buf[0] = stf_buf_get_pending(output);
+
+	if (!output->buf[0] && output->buf[1]) {
+		output->buf[0] = output->buf[1];
+		output->buf[1] = NULL;
+	}
+
+	if (output->buf[0])
+		output->state = STF_OUTPUT_SINGLE;
+
+	output->sequence = 0;
+	stf_init_addrs(video);
+
+	spin_unlock_irqrestore(&output->lock, flags);
+}
+
+static int stf_cap_s_cleanup(struct stfcamss_video *video)
+{
+	struct stf_capture *cap = to_stf_capture(video);
+	struct stf_v_buf *output = &cap->buffers;
+	unsigned long flags;
+
+	spin_lock_irqsave(&output->lock, flags);
+
+	output->state = STF_OUTPUT_OFF;
+
+	spin_unlock_irqrestore(&output->lock, flags);
+
+	return 0;
+}
+
+static void stf_wr_data_en(struct stfcamss_video *video)
+{
+	struct stf_capture *cap = to_stf_capture(video);
+	struct stfcamss *stfcamss = cap->video.stfcamss;
+
+	stf_syscon_reg_set_bit(stfcamss, VIN_CHANNEL_SEL_EN, U0_VIN_AXIWR0_EN);
+}
+
+static void stf_wr_irq_enable(struct stfcamss_video *video)
+{
+	struct stf_capture *cap = to_stf_capture(video);
+	struct stfcamss *stfcamss = cap->video.stfcamss;
+
+	stf_syscon_reg_clear_bit(stfcamss, VIN_INRT_PIX_CFG, U0_VIN_INTR_M);
+}
+
+static void stf_wr_irq_disable(struct stfcamss_video *video)
+{
+	struct stf_capture *cap = to_stf_capture(video);
+	struct stfcamss *stfcamss = cap->video.stfcamss;
+
+	stf_syscon_reg_set_bit(stfcamss, VIN_INRT_PIX_CFG, U0_VIN_INTR_CLEAN);
+	stf_syscon_reg_clear_bit(stfcamss, VIN_INRT_PIX_CFG, U0_VIN_INTR_CLEAN);
+	stf_syscon_reg_set_bit(stfcamss, VIN_INRT_PIX_CFG, U0_VIN_INTR_M);
+}
+
+static void stf_channel_set(struct stfcamss_video *video)
+{
+	struct stf_capture *cap = to_stf_capture(video);
+	struct stfcamss *stfcamss = cap->video.stfcamss;
+	u32 val;
+
+	if (cap->type == STF_CAPTURE_RAW) {
+		val = stf_syscon_reg_read(stfcamss, VIN_CHANNEL_SEL_EN);
+		val &= ~U0_VIN_CHANNEL_SEL_MASK;
+		val |= CHANNEL(0);
+		stf_syscon_reg_write(stfcamss, VIN_CHANNEL_SEL_EN, val);
+
+		val = stf_syscon_reg_read(stfcamss, VIN_INRT_PIX_CFG);
+		val &= ~U0_VIN_PIX_CT_MASK;
+		val |= PIX_CT(1);
+
+		val &= ~U0_VIN_PIXEL_HEIGH_BIT_SEL_MAKS;
+		val |= PIXEL_HEIGH_BIT_SEL(0);
+
+		val &= ~U0_VIN_PIX_CNT_END_MASK;
+		val |= PIX_CNT_END(IMAGE_MAX_WIDTH / 4 - 1);
+
+		stf_syscon_reg_write(stfcamss, VIN_INRT_PIX_CFG, val);
+	} else if (cap->type == STF_CAPTURE_YUV) {
+		val = stf_syscon_reg_read(stfcamss, VIN_CFG_REG);
+		val &= ~U0_VIN_MIPI_BYTE_EN_ISP0_MASK;
+		val |= U0_VIN_MIPI_BYTE_EN_ISP0(0);
+
+		val &= ~U0_VIN_MIPI_CHANNEL_SEL0_MASK;
+		val |= U0_VIN_MIPI_CHANNEL_SEL0(0);
+
+		val &= ~U0_VIN_PIX_NUM_MASK;
+		val |= U0_VIN_PIX_NUM(0);
+
+		val &= ~U0_VIN_P_I_MIPI_HAEDER_EN0_MASK;
+		val |= U0_VIN_P_I_MIPI_HAEDER_EN0(1);
+
+		stf_syscon_reg_write(stfcamss, VIN_CFG_REG, val);
+	}
+}
+
+static void stf_capture_start(struct stfcamss_video *video)
+{
+	struct stf_capture *cap = to_stf_capture(video);
+
+	stf_channel_set(video);
+	if (cap->type == STF_CAPTURE_RAW) {
+		stf_wr_irq_enable(video);
+		stf_wr_data_en(video);
+	}
+
+	stf_cap_s_cfg(video);
+}
+
+static void stf_capture_stop(struct stfcamss_video *video)
+{
+	struct stf_capture *cap = to_stf_capture(video);
+
+	if (cap->type == STF_CAPTURE_RAW)
+		stf_wr_irq_disable(video);
+
+	stf_cap_s_cleanup(video);
+}
+
+static void stf_capture_init(struct stfcamss *stfcamss, struct stf_capture *cap)
+{
+	cap->buffers.state = STF_OUTPUT_OFF;
+	cap->buffers.buf[0] = NULL;
+	cap->buffers.buf[1] = NULL;
+	cap->buffers.active_buf = 0;
+	atomic_set(&cap->buffers.frame_skip, 4);
+	INIT_LIST_HEAD(&cap->buffers.pending_bufs);
+	INIT_LIST_HEAD(&cap->buffers.ready_bufs);
+	spin_lock_init(&cap->buffers.lock);
+
+	cap->video.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+	cap->video.stfcamss = stfcamss;
+	cap->video.bpl_alignment = 16 * 8;
+
+	if (cap->type == STF_CAPTURE_RAW) {
+		cap->video.formats = stf_wr_fmts;
+		cap->video.nformats = ARRAY_SIZE(stf_wr_fmts);
+		cap->video.bpl_alignment = 8;
+	} else if (cap->type == STF_CAPTURE_YUV) {
+		cap->video.formats = stf_isp_fmts;
+		cap->video.nformats = ARRAY_SIZE(stf_isp_fmts);
+		cap->video.bpl_alignment = 1;
+	}
+}
+
+static void stf_buf_add_ready(struct stf_v_buf *output,
+			      struct stfcamss_buffer *buffer)
+{
+	INIT_LIST_HEAD(&buffer->queue);
+	list_add_tail(&buffer->queue, &output->ready_bufs);
+}
+
+static struct stfcamss_buffer *stf_buf_get_ready(struct stf_v_buf *output)
+{
+	struct stfcamss_buffer *buffer = NULL;
+
+	if (!list_empty(&output->ready_bufs)) {
+		buffer = list_first_entry(&output->ready_bufs,
+					  struct stfcamss_buffer,
+					  queue);
+		list_del(&buffer->queue);
+	}
+
+	return buffer;
+}
+
+static void stf_buf_add_pending(struct stf_v_buf *output,
+				struct stfcamss_buffer *buffer)
+{
+	INIT_LIST_HEAD(&buffer->queue);
+	list_add_tail(&buffer->queue, &output->pending_bufs);
+}
+
+static void stf_buf_update_on_last(struct stf_v_buf *output)
+{
+	switch (output->state) {
+	case STF_OUTPUT_CONTINUOUS:
+		output->state = STF_OUTPUT_SINGLE;
+		output->active_buf = !output->active_buf;
+		break;
+	case STF_OUTPUT_SINGLE:
+		output->state = STF_OUTPUT_STOPPING;
+		break;
+	default:
+		break;
+	}
+}
+
+static void stf_buf_update_on_next(struct stf_v_buf *output)
+{
+	switch (output->state) {
+	case STF_OUTPUT_CONTINUOUS:
+		output->active_buf = !output->active_buf;
+		break;
+	case STF_OUTPUT_SINGLE:
+	default:
+		break;
+	}
+}
+
+static void stf_buf_update_on_new(struct stfcamss_video *video,
+				  struct stfcamss_buffer *new_buf)
+{
+	struct stf_capture *cap = to_stf_capture(video);
+	struct stf_v_buf *output = &cap->buffers;
+
+	switch (output->state) {
+	case STF_OUTPUT_SINGLE:
+		stf_buf_add_pending(output, new_buf);
+		break;
+	case STF_OUTPUT_IDLE:
+		if (!output->buf[0]) {
+			output->buf[0] = new_buf;
+			stf_init_addrs(video);
+			output->state = STF_OUTPUT_SINGLE;
+		} else {
+			stf_buf_add_pending(output, new_buf);
+		}
+		break;
+	case STF_OUTPUT_STOPPING:
+		if (output->last_buffer) {
+			output->buf[output->active_buf] = output->last_buffer;
+			output->last_buffer = NULL;
+		}
+
+		output->state = STF_OUTPUT_SINGLE;
+		stf_buf_add_pending(output, new_buf);
+		break;
+	case STF_OUTPUT_CONTINUOUS:
+	default:
+		stf_buf_add_pending(output, new_buf);
+		break;
+	}
+}
+
+static void stf_buf_flush(struct stf_v_buf *output, enum vb2_buffer_state state)
+{
+	struct stfcamss_buffer *buf;
+	struct stfcamss_buffer *t;
+
+	list_for_each_entry_safe(buf, t, &output->pending_bufs, queue) {
+		vb2_buffer_done(&buf->vb.vb2_buf, state);
+		list_del(&buf->queue);
+	}
+	list_for_each_entry_safe(buf, t, &output->ready_bufs, queue) {
+		vb2_buffer_done(&buf->vb.vb2_buf, state);
+		list_del(&buf->queue);
+	}
+}
+
+static void stf_buf_done(struct stf_v_buf *output)
+{
+	struct stfcamss_buffer *ready_buf;
+	u64 ts = ktime_get_ns();
+	unsigned long flags;
+
+	if (output->state == STF_OUTPUT_OFF ||
+	    output->state == STF_OUTPUT_RESERVED)
+		return;
+
+	spin_lock_irqsave(&output->lock, flags);
+
+	while ((ready_buf = stf_buf_get_ready(output))) {
+		ready_buf->vb.vb2_buf.timestamp = ts;
+		ready_buf->vb.sequence = output->sequence++;
+
+		vb2_buffer_done(&ready_buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
+	}
+
+	spin_unlock_irqrestore(&output->lock, flags);
+}
+
+static void stf_change_buffer(struct stf_v_buf *output)
+{
+	struct stf_capture *cap = container_of(output, struct stf_capture,
+					       buffers);
+	struct stfcamss *stfcamss = cap->video.stfcamss;
+	struct stfcamss_buffer *ready_buf;
+	dma_addr_t *new_addr;
+	unsigned long flags;
+	u32 active_index;
+
+	if (output->state == STF_OUTPUT_OFF ||
+	    output->state == STF_OUTPUT_STOPPING ||
+	    output->state == STF_OUTPUT_RESERVED ||
+	    output->state == STF_OUTPUT_IDLE)
+		return;
+
+	spin_lock_irqsave(&output->lock, flags);
+
+	active_index = output->active_buf;
+
+	ready_buf = output->buf[active_index];
+	if (!ready_buf) {
+		dev_dbg(stfcamss->dev, "missing ready buf %d %d.\n",
+			active_index, output->state);
+		active_index = !active_index;
+		ready_buf = output->buf[active_index];
+		if (!ready_buf) {
+			dev_dbg(stfcamss->dev,
+				"missing ready buf2 %d %d.\n",
+				active_index, output->state);
+			goto out_unlock;
+		}
+	}
+
+	/* Get next buffer */
+	output->buf[active_index] = stf_buf_get_pending(output);
+	if (!output->buf[active_index]) {
+		new_addr = ready_buf->addr;
+		stf_buf_update_on_last(output);
+	} else {
+		new_addr = output->buf[active_index]->addr;
+		stf_buf_update_on_next(output);
+	}
+
+	if (output->state == STF_OUTPUT_STOPPING) {
+		output->last_buffer = ready_buf;
+	} else {
+		if (cap->type == STF_CAPTURE_RAW)
+			stf_set_raw_addr(stfcamss, new_addr[0]);
+		else if (cap->type == STF_CAPTURE_YUV)
+			stf_set_yuv_addr(stfcamss, new_addr[0], new_addr[1]);
+
+		stf_buf_add_ready(output, ready_buf);
+	}
+
+out_unlock:
+	spin_unlock_irqrestore(&output->lock, flags);
+}
+
+irqreturn_t stf_wr_irq_handler(int irq, void *priv)
+{
+	struct stfcamss *stfcamss = priv;
+	struct stf_capture *cap = &stfcamss->captures[STF_CAPTURE_RAW];
+
+	if (atomic_dec_if_positive(&cap->buffers.frame_skip) < 0) {
+		stf_change_buffer(&cap->buffers);
+		stf_buf_done(&cap->buffers);
+	}
+
+	stf_syscon_reg_set_bit(stfcamss, VIN_INRT_PIX_CFG, U0_VIN_INTR_CLEAN);
+	stf_syscon_reg_clear_bit(stfcamss, VIN_INRT_PIX_CFG, U0_VIN_INTR_CLEAN);
+
+	return IRQ_HANDLED;
+}
+
+irqreturn_t stf_isp_irq_handler(int irq, void *priv)
+{
+	struct stfcamss *stfcamss = priv;
+	struct stf_capture *cap = &stfcamss->captures[STF_CAPTURE_YUV];
+	u32 status;
+
+	status = stf_isp_reg_read(stfcamss, ISP_REG_ISP_CTRL_0);
+	if (status & ISPC_ISP) {
+		if (status & ISPC_ENUO)
+			stf_buf_done(&cap->buffers);
+
+		stf_isp_reg_write(stfcamss, ISP_REG_ISP_CTRL_0,
+				  (status & ~ISPC_INT_ALL_MASK) |
+				  ISPC_ISP | ISPC_CSI | ISPC_SC);
+	}
+
+	return IRQ_HANDLED;
+}
+
+irqreturn_t stf_line_irq_handler(int irq, void *priv)
+{
+	struct stfcamss *stfcamss = priv;
+	struct stf_capture *cap = &stfcamss->captures[STF_CAPTURE_YUV];
+	u32 status;
+
+	status = stf_isp_reg_read(stfcamss, ISP_REG_ISP_CTRL_0);
+	if (status & ISPC_LINE) {
+		if (atomic_dec_if_positive(&cap->buffers.frame_skip) < 0) {
+			if ((status & ISPC_ENUO))
+				stf_change_buffer(&cap->buffers);
+		}
+
+		stf_isp_reg_set_bit(stfcamss, ISP_REG_CSIINTS,
+				    CSI_INTS_MASK, CSI_INTS(0x3));
+		stf_isp_reg_set_bit(stfcamss, ISP_REG_IESHD,
+				    SHAD_UP_M | SHAD_UP_EN, 0x3);
+
+		stf_isp_reg_write(stfcamss, ISP_REG_ISP_CTRL_0,
+				  (status & ~ISPC_INT_ALL_MASK) | ISPC_LINE);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static int stf_queue_buffer(struct stfcamss_video *video,
+			    struct stfcamss_buffer *buf)
+{
+	struct stf_capture *cap = to_stf_capture(video);
+	struct stf_v_buf *v_bufs = &cap->buffers;
+	unsigned long flags;
+
+	spin_lock_irqsave(&v_bufs->lock, flags);
+	stf_buf_update_on_new(video, buf);
+	spin_unlock_irqrestore(&v_bufs->lock, flags);
+
+	return 0;
+}
+
+static int stf_flush_buffers(struct stfcamss_video *video,
+			     enum vb2_buffer_state state)
+{
+	struct stf_capture *cap = to_stf_capture(video);
+	struct stf_v_buf *v_bufs = &cap->buffers;
+	unsigned long flags;
+	unsigned int i;
+
+	spin_lock_irqsave(&v_bufs->lock, flags);
+
+	stf_buf_flush(v_bufs, state);
+
+	for (i = 0; i < ARRAY_SIZE(v_bufs->buf); i++) {
+		if (v_bufs->buf[i])
+			vb2_buffer_done(&v_bufs->buf[i]->vb.vb2_buf, state);
+
+		v_bufs->buf[i] = NULL;
+	}
+
+	if (v_bufs->last_buffer) {
+		vb2_buffer_done(&v_bufs->last_buffer->vb.vb2_buf, state);
+		v_bufs->last_buffer = NULL;
+	}
+
+	spin_unlock_irqrestore(&v_bufs->lock, flags);
+	return 0;
+}
+
+static const struct stfcamss_video_ops stf_capture_ops = {
+	.queue_buffer = stf_queue_buffer,
+	.flush_buffers = stf_flush_buffers,
+	.start_streaming = stf_capture_start,
+	.stop_streaming = stf_capture_stop,
+};
+
+static void stf_capture_unregister_one(struct stf_capture *cap)
+{
+	if (!video_is_registered(&cap->video.vdev))
+		return;
+
+	media_entity_cleanup(&cap->video.vdev.entity);
+	vb2_video_unregister_device(&cap->video.vdev);
+}
+
+void stf_capture_unregister(struct stfcamss *stfcamss)
+{
+	struct stf_capture *cap_raw = &stfcamss->captures[STF_CAPTURE_RAW];
+	struct stf_capture *cap_yuv = &stfcamss->captures[STF_CAPTURE_YUV];
+
+	stf_capture_unregister_one(cap_raw);
+	stf_capture_unregister_one(cap_yuv);
+}
+
+int stf_capture_register(struct stfcamss *stfcamss,
+			 struct v4l2_device *v4l2_dev)
+{
+	unsigned int i;
+	int ret;
+
+	for (i = 0; i < ARRAY_SIZE(stfcamss->captures); i++) {
+		struct stf_capture *capture = &stfcamss->captures[i];
+
+		capture->type = i;
+		capture->video.ops = &stf_capture_ops;
+		stf_capture_init(stfcamss, capture);
+
+		ret = stf_video_register(&capture->video, v4l2_dev,
+					 stf_cap_names[i]);
+		if (ret < 0) {
+			dev_err(stfcamss->dev,
+				"Failed to register video node: %d\n", ret);
+			stf_capture_unregister(stfcamss);
+			return ret;
+		}
+	}
+
+	return 0;
+}
diff --git a/drivers/staging/media/starfive/camss/stf-capture.h b/drivers/staging/media/starfive/camss/stf-capture.h
new file mode 100644
index 0000000000000..2f9740b7e500a
--- /dev/null
+++ b/drivers/staging/media/starfive/camss/stf-capture.h
@@ -0,0 +1,86 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * stf_capture.h
+ *
+ * Starfive Camera Subsystem driver
+ *
+ * Copyright (C) 2021-2023 StarFive Technology Co., Ltd.
+ */
+
+#ifndef STF_CAPTURE_H
+#define STF_CAPTURE_H
+
+#include "stf-video.h"
+
+#define VIN_CHANNEL_SEL_EN			0x14
+#define VIN_START_ADDR_N			0x18
+#define VIN_INRT_PIX_CFG			0x1c
+#define VIN_START_ADDR_O			0x20
+#define VIN_CFG_REG				0x24
+
+#define U0_VIN_CNFG_AXI_DVP_EN			BIT(2)
+
+#define U0_VIN_CHANNEL_SEL_MASK			GENMASK(3, 0)
+#define U0_VIN_AXIWR0_EN			BIT(4)
+#define CHANNEL(x)				((x) << 0)
+
+#define U0_VIN_INTR_CLEAN			BIT(0)
+#define U0_VIN_INTR_M				BIT(1)
+#define U0_VIN_PIX_CNT_END_MASK			GENMASK(12, 2)
+#define U0_VIN_PIX_CT_MASK			GENMASK(14, 13)
+#define U0_VIN_PIXEL_HEIGH_BIT_SEL_MAKS		GENMASK(16, 15)
+
+#define PIX_CNT_END(x)				((x) << 2)
+#define PIX_CT(x)				((x) << 13)
+#define PIXEL_HEIGH_BIT_SEL(x)			((x) << 15)
+
+#define U0_VIN_CNFG_DVP_HS_POS			BIT(1)
+#define U0_VIN_CNFG_DVP_SWAP_EN			BIT(2)
+#define U0_VIN_CNFG_DVP_VS_POS			BIT(3)
+#define U0_VIN_CNFG_GEN_EN_AXIRD		BIT(4)
+#define U0_VIN_CNFG_ISP_DVP_EN0			BIT(5)
+#define U0_VIN_MIPI_BYTE_EN_ISP0(n)		((n) << 6)
+#define U0_VIN_MIPI_CHANNEL_SEL0(n)		((n) << 8)
+#define U0_VIN_P_I_MIPI_HAEDER_EN0(n)		((n) << 12)
+#define U0_VIN_PIX_NUM(n)			((n) << 13)
+#define U0_VIN_MIPI_BYTE_EN_ISP0_MASK		GENMASK(7, 6)
+#define U0_VIN_MIPI_CHANNEL_SEL0_MASK		GENMASK(11, 8)
+#define U0_VIN_P_I_MIPI_HAEDER_EN0_MASK		BIT(12)
+#define U0_VIN_PIX_NUM_MASK			GENMASK(16, 13)
+
+enum stf_v_state {
+	STF_OUTPUT_OFF,
+	STF_OUTPUT_RESERVED,
+	STF_OUTPUT_SINGLE,
+	STF_OUTPUT_CONTINUOUS,
+	STF_OUTPUT_IDLE,
+	STF_OUTPUT_STOPPING
+};
+
+struct stf_v_buf {
+	int active_buf;
+	struct stfcamss_buffer *buf[2];
+	struct stfcamss_buffer *last_buffer;
+	struct list_head pending_bufs;
+	struct list_head ready_bufs;
+	enum stf_v_state state;
+	unsigned int sequence;
+	/* protects the above member variables */
+	spinlock_t lock;
+	atomic_t frame_skip;
+};
+
+struct stf_capture {
+	struct stfcamss_video video;
+	struct stf_v_buf buffers;
+	enum stf_capture_type type;
+};
+
+irqreturn_t stf_wr_irq_handler(int irq, void *priv);
+irqreturn_t stf_isp_irq_handler(int irq, void *priv);
+irqreturn_t stf_line_irq_handler(int irq, void *priv);
+int stf_capture_register(struct stfcamss *stfcamss,
+			 struct v4l2_device *v4l2_dev);
+void stf_capture_unregister(struct stfcamss *stfcamss);
+
+#endif
diff --git a/drivers/staging/media/starfive/camss/stf-isp-hw-ops.c b/drivers/staging/media/starfive/camss/stf-isp-hw-ops.c
new file mode 100644
index 0000000000000..c34631ff94227
--- /dev/null
+++ b/drivers/staging/media/starfive/camss/stf-isp-hw-ops.c
@@ -0,0 +1,445 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * stf_isp_hw_ops.c
+ *
+ * Register interface file for StarFive ISP driver
+ *
+ * Copyright (C) 2021-2023 StarFive Technology Co., Ltd.
+ *
+ */
+
+#include "stf-camss.h"
+
+static void stf_isp_config_obc(struct stfcamss *stfcamss)
+{
+	u32 reg_val, reg_add;
+
+	stf_isp_reg_write(stfcamss, ISP_REG_OBC_CFG, OBC_W_H(11) | OBC_W_W(11));
+
+	reg_val = GAIN_D_POINT(0x40) | GAIN_C_POINT(0x40) |
+		  GAIN_B_POINT(0x40) | GAIN_A_POINT(0x40);
+	for (reg_add = ISP_REG_OBCG_CFG_0; reg_add <= ISP_REG_OBCG_CFG_3;) {
+		stf_isp_reg_write(stfcamss, reg_add, reg_val);
+		reg_add += 4;
+	}
+
+	reg_val = OFFSET_D_POINT(0) | OFFSET_C_POINT(0) |
+		  OFFSET_B_POINT(0) | OFFSET_A_POINT(0);
+	for (reg_add = ISP_REG_OBCO_CFG_0; reg_add <= ISP_REG_OBCO_CFG_3;) {
+		stf_isp_reg_write(stfcamss, reg_add, reg_val);
+		reg_add += 4;
+	}
+}
+
+static void stf_isp_config_oecf(struct stfcamss *stfcamss)
+{
+	u32 reg_add, par_val;
+	u16 par_h, par_l;
+
+	par_h = 0x10; par_l = 0;
+	par_val = OCEF_PAR_H(par_h) | OCEF_PAR_L(par_l);
+	for (reg_add = ISP_REG_OECF_X0_CFG0; reg_add <= ISP_REG_OECF_Y3_CFG0;) {
+		stf_isp_reg_write(stfcamss, reg_add, par_val);
+		reg_add += 0x20;
+	}
+
+	par_h = 0x40; par_l = 0x20;
+	par_val = OCEF_PAR_H(par_h) | OCEF_PAR_L(par_l);
+	for (reg_add = ISP_REG_OECF_X0_CFG1; reg_add <= ISP_REG_OECF_Y3_CFG1;) {
+		stf_isp_reg_write(stfcamss, reg_add, par_val);
+		reg_add += 0x20;
+	}
+
+	par_h = 0x80; par_l = 0x60;
+	par_val = OCEF_PAR_H(par_h) | OCEF_PAR_L(par_l);
+	for (reg_add = ISP_REG_OECF_X0_CFG2; reg_add <= ISP_REG_OECF_Y3_CFG2;) {
+		stf_isp_reg_write(stfcamss, reg_add, par_val);
+		reg_add += 0x20;
+	}
+
+	par_h = 0xc0; par_l = 0xa0;
+	par_val = OCEF_PAR_H(par_h) | OCEF_PAR_L(par_l);
+	for (reg_add = ISP_REG_OECF_X0_CFG3; reg_add <= ISP_REG_OECF_Y3_CFG3;) {
+		stf_isp_reg_write(stfcamss, reg_add, par_val);
+		reg_add += 0x20;
+	}
+
+	par_h = 0x100; par_l = 0xe0;
+	par_val = OCEF_PAR_H(par_h) | OCEF_PAR_L(par_l);
+	for (reg_add = ISP_REG_OECF_X0_CFG4; reg_add <= ISP_REG_OECF_Y3_CFG4;) {
+		stf_isp_reg_write(stfcamss, reg_add, par_val);
+		reg_add += 0x20;
+	}
+
+	par_h = 0x200; par_l = 0x180;
+	par_val = OCEF_PAR_H(par_h) | OCEF_PAR_L(par_l);
+	for (reg_add = ISP_REG_OECF_X0_CFG5; reg_add <= ISP_REG_OECF_Y3_CFG5;) {
+		stf_isp_reg_write(stfcamss, reg_add, par_val);
+		reg_add += 0x20;
+	}
+
+	par_h = 0x300; par_l = 0x280;
+	par_val = OCEF_PAR_H(par_h) | OCEF_PAR_L(par_l);
+	for (reg_add = ISP_REG_OECF_X0_CFG6; reg_add <= ISP_REG_OECF_Y3_CFG6;) {
+		stf_isp_reg_write(stfcamss, reg_add, par_val);
+		reg_add += 0x20;
+	}
+
+	par_h = 0x3fe; par_l = 0x380;
+	par_val = OCEF_PAR_H(par_h) | OCEF_PAR_L(par_l);
+	for (reg_add = ISP_REG_OECF_X0_CFG7; reg_add <= ISP_REG_OECF_Y3_CFG7;) {
+		stf_isp_reg_write(stfcamss, reg_add, par_val);
+		reg_add += 0x20;
+	}
+
+	par_h = 0x80; par_l = 0x80;
+	par_val = OCEF_PAR_H(par_h) | OCEF_PAR_L(par_l);
+	for (reg_add = ISP_REG_OECF_S0_CFG0; reg_add <= ISP_REG_OECF_S3_CFG7;) {
+		stf_isp_reg_write(stfcamss, reg_add, par_val);
+		reg_add += 4;
+	}
+}
+
+static void stf_isp_config_lccf(struct stfcamss *stfcamss)
+{
+	u32 reg_add;
+
+	stf_isp_reg_write(stfcamss, ISP_REG_LCCF_CFG_0,
+			  Y_DISTANCE(0x21C) | X_DISTANCE(0x3C0));
+	stf_isp_reg_write(stfcamss, ISP_REG_LCCF_CFG_1, LCCF_MAX_DIS(0xb));
+
+	for (reg_add = ISP_REG_LCCF_CFG_2; reg_add <= ISP_REG_LCCF_CFG_5;) {
+		stf_isp_reg_write(stfcamss, reg_add,
+				  LCCF_F2_PAR(0x0) | LCCF_F1_PAR(0x0));
+		reg_add += 4;
+	}
+}
+
+static void stf_isp_config_awb(struct stfcamss *stfcamss)
+{
+	u32 reg_val, reg_add;
+	u16 symbol_h, symbol_l;
+
+	symbol_h = 0x0; symbol_l = 0x0;
+	reg_val = AWB_X_SYMBOL_H(symbol_h) | AWB_X_SYMBOL_L(symbol_l);
+
+	for (reg_add = ISP_REG_AWB_X0_CFG_0; reg_add <= ISP_REG_AWB_X3_CFG_1;) {
+		stf_isp_reg_write(stfcamss, reg_add, reg_val);
+		reg_add += 4;
+	}
+
+	symbol_h = 0x0, symbol_l = 0x0;
+	reg_val = AWB_Y_SYMBOL_H(symbol_h) | AWB_Y_SYMBOL_L(symbol_l);
+
+	for (reg_add = ISP_REG_AWB_Y0_CFG_0; reg_add <= ISP_REG_AWB_Y3_CFG_1;) {
+		stf_isp_reg_write(stfcamss, reg_add, reg_val);
+		reg_add += 4;
+	}
+
+	symbol_h = 0x80, symbol_l = 0x80;
+	reg_val = AWB_S_SYMBOL_H(symbol_h) | AWB_S_SYMBOL_L(symbol_l);
+
+	for (reg_add = ISP_REG_AWB_S0_CFG_0; reg_add <= ISP_REG_AWB_S3_CFG_1;) {
+		stf_isp_reg_write(stfcamss, reg_add, reg_val);
+		reg_add += 4;
+	}
+}
+
+static void stf_isp_config_grgb(struct stfcamss *stfcamss)
+{
+	stf_isp_reg_write(stfcamss, ISP_REG_ICTC,
+			  GF_MODE(1) | MAXGT(0x140) | MINGT(0x40));
+	stf_isp_reg_write(stfcamss, ISP_REG_IDBC, BADGT(0x200) | BADXT(0x200));
+}
+
+static void stf_isp_config_cfa(struct stfcamss *stfcamss)
+{
+	stf_isp_reg_write(stfcamss, ISP_REG_RAW_FORMAT_CFG,
+			  SMY13(0) | SMY12(1) | SMY11(0) | SMY10(1) | SMY3(2) |
+			  SMY2(3) | SMY1(2) | SMY0(3));
+	stf_isp_reg_write(stfcamss, ISP_REG_ICFAM, CROSS_COV(3) | HV_W(2));
+}
+
+static void stf_isp_config_ccm(struct stfcamss *stfcamss)
+{
+	u32 reg_add;
+
+	stf_isp_reg_write(stfcamss, ISP_REG_ICAMD_0, DNRM_F(6) | CCM_M_DAT(0));
+
+	for (reg_add = ISP_REG_ICAMD_12; reg_add <= ISP_REG_ICAMD_20;) {
+		stf_isp_reg_write(stfcamss, reg_add, CCM_M_DAT(0x80));
+		reg_add += 0x10;
+	}
+
+	stf_isp_reg_write(stfcamss, ISP_REG_ICAMD_24, CCM_M_DAT(0x700));
+	stf_isp_reg_write(stfcamss, ISP_REG_ICAMD_25, CCM_M_DAT(0x200));
+}
+
+static void stf_isp_config_gamma(struct stfcamss *stfcamss)
+{
+	u32 reg_val, reg_add;
+	u16 gamma_slope_v, gamma_v;
+
+	gamma_slope_v = 0x2400; gamma_v = 0x0;
+	reg_val = GAMMA_S_VAL(gamma_slope_v) | GAMMA_VAL(gamma_v);
+	stf_isp_reg_write(stfcamss, ISP_REG_GAMMA_VAL0, reg_val);
+
+	gamma_slope_v = 0x800; gamma_v = 0x20;
+	for (reg_add = ISP_REG_GAMMA_VAL1; reg_add <= ISP_REG_GAMMA_VAL7;) {
+		reg_val = GAMMA_S_VAL(gamma_slope_v) | GAMMA_VAL(gamma_v);
+		stf_isp_reg_write(stfcamss, reg_add, reg_val);
+		reg_add += 4;
+		gamma_v += 0x20;
+	}
+
+	gamma_v = 0x100;
+	for (reg_add = ISP_REG_GAMMA_VAL8; reg_add <= ISP_REG_GAMMA_VAL13;) {
+		reg_val = GAMMA_S_VAL(gamma_slope_v) | GAMMA_VAL(gamma_v);
+		stf_isp_reg_write(stfcamss, reg_add, reg_val);
+		reg_add += 4;
+		gamma_v += 0x80;
+	}
+
+	gamma_v = 0x3fe;
+	reg_val = GAMMA_S_VAL(gamma_slope_v) | GAMMA_VAL(gamma_v);
+	stf_isp_reg_write(stfcamss, ISP_REG_GAMMA_VAL14, reg_val);
+}
+
+static void stf_isp_config_r2y(struct stfcamss *stfcamss)
+{
+	stf_isp_reg_write(stfcamss, ISP_REG_R2Y_0, 0x4C);
+	stf_isp_reg_write(stfcamss, ISP_REG_R2Y_1, 0x97);
+	stf_isp_reg_write(stfcamss, ISP_REG_R2Y_2, 0x1d);
+	stf_isp_reg_write(stfcamss, ISP_REG_R2Y_3, 0x1d5);
+	stf_isp_reg_write(stfcamss, ISP_REG_R2Y_4, 0x1ac);
+	stf_isp_reg_write(stfcamss, ISP_REG_R2Y_5, 0x80);
+	stf_isp_reg_write(stfcamss, ISP_REG_R2Y_6, 0x80);
+	stf_isp_reg_write(stfcamss, ISP_REG_R2Y_7, 0x194);
+	stf_isp_reg_write(stfcamss, ISP_REG_R2Y_8, 0x1ec);
+}
+
+static void stf_isp_config_y_curve(struct stfcamss *stfcamss)
+{
+	u32 reg_add;
+	u16 y_curve;
+
+	y_curve = 0x0;
+	for (reg_add = ISP_REG_YCURVE_0; reg_add <= ISP_REG_YCURVE_63;) {
+		stf_isp_reg_write(stfcamss, reg_add, y_curve);
+		reg_add += 4;
+		y_curve += 0x10;
+	}
+}
+
+static void stf_isp_config_sharpen(struct stfcamss *sc)
+{
+	u32 reg_add;
+
+	stf_isp_reg_write(sc, ISP_REG_SHARPEN0, S_DELTA(0x7) | S_WEIGHT(0xf));
+	stf_isp_reg_write(sc, ISP_REG_SHARPEN1, S_DELTA(0x18) | S_WEIGHT(0xf));
+	stf_isp_reg_write(sc, ISP_REG_SHARPEN2, S_DELTA(0x80) | S_WEIGHT(0xf));
+	stf_isp_reg_write(sc, ISP_REG_SHARPEN3, S_DELTA(0x100) | S_WEIGHT(0xf));
+	stf_isp_reg_write(sc, ISP_REG_SHARPEN4, S_DELTA(0x10) | S_WEIGHT(0xf));
+	stf_isp_reg_write(sc, ISP_REG_SHARPEN5, S_DELTA(0x60) | S_WEIGHT(0xf));
+	stf_isp_reg_write(sc, ISP_REG_SHARPEN6, S_DELTA(0x100) | S_WEIGHT(0xf));
+	stf_isp_reg_write(sc, ISP_REG_SHARPEN7, S_DELTA(0x190) | S_WEIGHT(0xf));
+	stf_isp_reg_write(sc, ISP_REG_SHARPEN8, S_DELTA(0x0) | S_WEIGHT(0xf));
+
+	for (reg_add = ISP_REG_SHARPEN9; reg_add <= ISP_REG_SHARPEN14;) {
+		stf_isp_reg_write(sc, reg_add, S_WEIGHT(0xf));
+		reg_add += 4;
+	}
+
+	for (reg_add = ISP_REG_SHARPEN_FS0; reg_add <= ISP_REG_SHARPEN_FS5;) {
+		stf_isp_reg_write(sc, reg_add, S_FACTOR(0x10) | S_SLOPE(0x0));
+		reg_add += 4;
+	}
+
+	stf_isp_reg_write(sc, ISP_REG_SHARPEN_WN,
+			  PDIRF(0x8) | NDIRF(0x8) | WSUM(0xd7c));
+	stf_isp_reg_write(sc, ISP_REG_IUVS1, UVDIFF2(0xC0) | UVDIFF1(0x40));
+	stf_isp_reg_write(sc, ISP_REG_IUVS2, UVF(0xff) | UVSLOPE(0x0));
+	stf_isp_reg_write(sc, ISP_REG_IUVCKS1,
+			  UVCKDIFF2(0xa0) | UVCKDIFF1(0x40));
+}
+
+static void stf_isp_config_dnyuv(struct stfcamss *stfcamss)
+{
+	u32 reg_val;
+
+	reg_val = YUVSW5(7) | YUVSW4(7) | YUVSW3(7) | YUVSW2(7) |
+		  YUVSW1(7) | YUVSW0(7);
+	stf_isp_reg_write(stfcamss, ISP_REG_DNYUV_YSWR0, reg_val);
+	stf_isp_reg_write(stfcamss, ISP_REG_DNYUV_CSWR0, reg_val);
+
+	reg_val = YUVSW3(7) | YUVSW2(7) | YUVSW1(7) | YUVSW0(7);
+	stf_isp_reg_write(stfcamss, ISP_REG_DNYUV_YSWR1, reg_val);
+	stf_isp_reg_write(stfcamss, ISP_REG_DNYUV_CSWR1, reg_val);
+
+	reg_val = CURVE_D_H(0x60) | CURVE_D_L(0x40);
+	stf_isp_reg_write(stfcamss, ISP_REG_DNYUV_YDR0, reg_val);
+	stf_isp_reg_write(stfcamss, ISP_REG_DNYUV_CDR0, reg_val);
+
+	reg_val = CURVE_D_H(0xd8) | CURVE_D_L(0x90);
+	stf_isp_reg_write(stfcamss, ISP_REG_DNYUV_YDR1, reg_val);
+	stf_isp_reg_write(stfcamss, ISP_REG_DNYUV_CDR1, reg_val);
+
+	reg_val = CURVE_D_H(0x1e6) | CURVE_D_L(0x144);
+	stf_isp_reg_write(stfcamss, ISP_REG_DNYUV_YDR2, reg_val);
+	stf_isp_reg_write(stfcamss, ISP_REG_DNYUV_CDR2, reg_val);
+}
+
+static void stf_isp_config_sat(struct stfcamss *stfcamss)
+{
+	stf_isp_reg_write(stfcamss, ISP_REG_CS_GAIN, CMAD(0x0) | CMAB(0x100));
+	stf_isp_reg_write(stfcamss, ISP_REG_CS_THRESHOLD, CMD(0x1f) | CMB(0x1));
+	stf_isp_reg_write(stfcamss, ISP_REG_CS_OFFSET, VOFF(0x0) | UOFF(0x0));
+	stf_isp_reg_write(stfcamss, ISP_REG_CS_HUE_F, SIN(0x0) | COS(0x100));
+	stf_isp_reg_write(stfcamss, ISP_REG_CS_SCALE, 0x8);
+	stf_isp_reg_write(stfcamss, ISP_REG_YADJ0, YOIR(0x401) | YIMIN(0x1));
+	stf_isp_reg_write(stfcamss, ISP_REG_YADJ1, YOMAX(0x3ff) | YOMIN(0x1));
+}
+
+int stf_isp_reset(struct stf_isp_dev *isp_dev)
+{
+	stf_isp_reg_set_bit(isp_dev->stfcamss, ISP_REG_ISP_CTRL_0,
+			    ISPC_RST_MASK, ISPC_RST);
+	stf_isp_reg_set_bit(isp_dev->stfcamss, ISP_REG_ISP_CTRL_0,
+			    ISPC_RST_MASK, 0);
+
+	return 0;
+}
+
+void stf_isp_init_cfg(struct stf_isp_dev *isp_dev)
+{
+	stf_isp_reg_write(isp_dev->stfcamss, ISP_REG_DC_CFG_1, DC_AXI_ID(0x0));
+	stf_isp_reg_write(isp_dev->stfcamss, ISP_REG_DEC_CFG,
+			  DEC_V_KEEP(0x0) |
+			  DEC_V_PERIOD(0x0) |
+			  DEC_H_KEEP(0x0) |
+			  DEC_H_PERIOD(0x0));
+
+	stf_isp_config_obc(isp_dev->stfcamss);
+	stf_isp_config_oecf(isp_dev->stfcamss);
+	stf_isp_config_lccf(isp_dev->stfcamss);
+	stf_isp_config_awb(isp_dev->stfcamss);
+	stf_isp_config_grgb(isp_dev->stfcamss);
+	stf_isp_config_cfa(isp_dev->stfcamss);
+	stf_isp_config_ccm(isp_dev->stfcamss);
+	stf_isp_config_gamma(isp_dev->stfcamss);
+	stf_isp_config_r2y(isp_dev->stfcamss);
+	stf_isp_config_y_curve(isp_dev->stfcamss);
+	stf_isp_config_sharpen(isp_dev->stfcamss);
+	stf_isp_config_dnyuv(isp_dev->stfcamss);
+	stf_isp_config_sat(isp_dev->stfcamss);
+
+	stf_isp_reg_write(isp_dev->stfcamss, ISP_REG_CSI_MODULE_CFG,
+			  CSI_DUMP_EN | CSI_SC_EN | CSI_AWB_EN |
+			  CSI_LCCF_EN | CSI_OECF_EN | CSI_OBC_EN | CSI_DEC_EN);
+	stf_isp_reg_write(isp_dev->stfcamss, ISP_REG_ISP_CTRL_1,
+			  CTRL_SAT(1) | CTRL_DBC | CTRL_CTC | CTRL_YHIST |
+			  CTRL_YCURVE | CTRL_BIYUV | CTRL_SCE | CTRL_EE |
+			  CTRL_CCE | CTRL_RGE | CTRL_CME | CTRL_AE | CTRL_CE);
+}
+
+static void stf_isp_config_crop(struct stfcamss *stfcamss,
+				struct v4l2_rect *crop)
+{
+	u32 bpp = stfcamss->isp_dev.current_fmt->bpp;
+	u32 val;
+
+	val = VSTART_CAP(crop->top) | HSTART_CAP(crop->left);
+	stf_isp_reg_write(stfcamss, ISP_REG_PIC_CAPTURE_START_CFG, val);
+
+	val = VEND_CAP(crop->height + crop->top - 1) |
+	      HEND_CAP(crop->width + crop->left - 1);
+	stf_isp_reg_write(stfcamss, ISP_REG_PIC_CAPTURE_END_CFG, val);
+
+	val = H_ACT_CAP(crop->height) | W_ACT_CAP(crop->width);
+	stf_isp_reg_write(stfcamss, ISP_REG_PIPELINE_XY_SIZE, val);
+
+	val = ALIGN(crop->width * bpp / 8, STFCAMSS_FRAME_WIDTH_ALIGN_8);
+	stf_isp_reg_write(stfcamss, ISP_REG_STRIDE, val);
+}
+
+static void stf_isp_config_raw_fmt(struct stfcamss *stfcamss, u32 mcode)
+{
+	u32 val, val1;
+
+	switch (mcode) {
+	case MEDIA_BUS_FMT_SRGGB10_1X10:
+	case MEDIA_BUS_FMT_SRGGB8_1X8:
+		/* 3 2 3 2 1 0 1 0 B Gb B Gb Gr R Gr R */
+		val = SMY13(3) | SMY12(2) | SMY11(3) | SMY10(2) |
+		      SMY3(1) | SMY2(0) | SMY1(1) | SMY0(0);
+		val1 = CTRL_SAT(0x0);
+		break;
+	case MEDIA_BUS_FMT_SGRBG10_1X10:
+	case MEDIA_BUS_FMT_SGRBG8_1X8:
+		/* 2 3 2 3 0 1 0 1, Gb B Gb B R Gr R Gr */
+		val = SMY13(2) | SMY12(3) | SMY11(2) | SMY10(3) |
+		      SMY3(0) | SMY2(1) | SMY1(0) | SMY0(1);
+		val1 = CTRL_SAT(0x2);
+		break;
+	case MEDIA_BUS_FMT_SGBRG10_1X10:
+	case MEDIA_BUS_FMT_SGBRG8_1X8:
+		/* 1 0 1 0 3 2 3 2, Gr R Gr R B Gb B Gb */
+		val = SMY13(1) | SMY12(0) | SMY11(1) | SMY10(0) |
+		      SMY3(3) | SMY2(2) | SMY1(3) | SMY0(2);
+		val1 = CTRL_SAT(0x3);
+		break;
+	case MEDIA_BUS_FMT_SBGGR10_1X10:
+	case MEDIA_BUS_FMT_SBGGR8_1X8:
+		/* 0 1 0 1 2 3 2 3 R Gr R Gr Gb B Gb B */
+		val = SMY13(0) | SMY12(1) | SMY11(0) | SMY10(1) |
+		      SMY3(2) | SMY2(3) | SMY1(2) | SMY0(3);
+		val1 = CTRL_SAT(0x1);
+		break;
+	default:
+		val = SMY13(0) | SMY12(1) | SMY11(0) | SMY10(1) |
+		      SMY3(2) | SMY2(3) | SMY1(2) | SMY0(3);
+		val1 = CTRL_SAT(0x1);
+		break;
+	}
+	stf_isp_reg_write(stfcamss, ISP_REG_RAW_FORMAT_CFG, val);
+	stf_isp_reg_set_bit(stfcamss, ISP_REG_ISP_CTRL_1, CTRL_SAT_MASK, val1);
+}
+
+void stf_isp_settings(struct stf_isp_dev *isp_dev,
+		      struct v4l2_rect *crop, u32 mcode)
+{
+	struct stfcamss *stfcamss = isp_dev->stfcamss;
+
+	stf_isp_config_crop(stfcamss, crop);
+	stf_isp_config_raw_fmt(stfcamss, mcode);
+
+	stf_isp_reg_set_bit(stfcamss, ISP_REG_DUMP_CFG_1,
+			    DUMP_BURST_LEN_MASK | DUMP_SD_MASK,
+			    DUMP_BURST_LEN(3));
+
+	stf_isp_reg_write(stfcamss, ISP_REG_ITIIWSR,
+			  ITI_HSIZE(IMAGE_MAX_HEIGH) |
+			  ITI_WSIZE(IMAGE_MAX_WIDTH));
+	stf_isp_reg_write(stfcamss, ISP_REG_ITIDWLSR, 0x960);
+	stf_isp_reg_write(stfcamss, ISP_REG_ITIDRLSR, 0x960);
+	stf_isp_reg_write(stfcamss, ISP_REG_SENSOR, IMAGER_SEL(1));
+}
+
+void stf_isp_stream_set(struct stf_isp_dev *isp_dev)
+{
+	struct stfcamss *stfcamss = isp_dev->stfcamss;
+
+	stf_isp_reg_write_delay(stfcamss, ISP_REG_ISP_CTRL_0,
+				ISPC_ENUO | ISPC_ENLS | ISPC_RST, 10);
+	stf_isp_reg_write_delay(stfcamss, ISP_REG_ISP_CTRL_0,
+				ISPC_ENUO | ISPC_ENLS, 10);
+	stf_isp_reg_write(stfcamss, ISP_REG_IESHD, SHAD_UP_M);
+	stf_isp_reg_write_delay(stfcamss, ISP_REG_ISP_CTRL_0,
+				ISPC_ENUO | ISPC_ENLS | ISPC_EN, 10);
+	stf_isp_reg_write_delay(stfcamss, ISP_REG_CSIINTS,
+				CSI_INTS(1) | CSI_SHA_M(4), 10);
+	stf_isp_reg_write_delay(stfcamss, ISP_REG_CSIINTS,
+				CSI_INTS(2) | CSI_SHA_M(4), 10);
+	stf_isp_reg_write_delay(stfcamss, ISP_REG_CSI_INPUT_EN_AND_STATUS,
+				CSI_EN_S, 10);
+}
diff --git a/drivers/staging/media/starfive/camss/stf-isp.c b/drivers/staging/media/starfive/camss/stf-isp.c
new file mode 100644
index 0000000000000..d50616ef351ed
--- /dev/null
+++ b/drivers/staging/media/starfive/camss/stf-isp.c
@@ -0,0 +1,385 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * stf_isp.c
+ *
+ * StarFive Camera Subsystem - ISP Module
+ *
+ * Copyright (C) 2021-2023 StarFive Technology Co., Ltd.
+ */
+#include <media/v4l2-rect.h>
+
+#include "stf-camss.h"
+
+#define SINK_FORMATS_INDEX	0
+#define SOURCE_FORMATS_INDEX	1
+
+static int isp_set_selection(struct v4l2_subdev *sd,
+			     struct v4l2_subdev_state *state,
+			     struct v4l2_subdev_selection *sel);
+
+static const struct stf_isp_format isp_formats_sink[] = {
+	{ MEDIA_BUS_FMT_SRGGB10_1X10, 10 },
+	{ MEDIA_BUS_FMT_SGRBG10_1X10, 10 },
+	{ MEDIA_BUS_FMT_SGBRG10_1X10, 10 },
+	{ MEDIA_BUS_FMT_SBGGR10_1X10, 10 },
+};
+
+static const struct stf_isp_format isp_formats_source[] = {
+	{ MEDIA_BUS_FMT_YUYV8_1_5X8, 8 },
+};
+
+static const struct stf_isp_format_table isp_formats_st7110[] = {
+	{ isp_formats_sink, ARRAY_SIZE(isp_formats_sink) },
+	{ isp_formats_source, ARRAY_SIZE(isp_formats_source) },
+};
+
+static const struct stf_isp_format *
+stf_g_fmt_by_mcode(const struct stf_isp_format_table *fmt_table, u32 mcode)
+{
+	unsigned int i;
+
+	for (i = 0; i < fmt_table->nfmts; i++) {
+		if (fmt_table->fmts[i].code == mcode)
+			return &fmt_table->fmts[i];
+	}
+
+	return NULL;
+}
+
+int stf_isp_init(struct stfcamss *stfcamss)
+{
+	struct stf_isp_dev *isp_dev = &stfcamss->isp_dev;
+
+	isp_dev->stfcamss = stfcamss;
+	isp_dev->formats = isp_formats_st7110;
+	isp_dev->nformats = ARRAY_SIZE(isp_formats_st7110);
+	isp_dev->current_fmt = &isp_formats_source[0];
+
+	return 0;
+}
+
+static int isp_set_stream(struct v4l2_subdev *sd, int enable)
+{
+	struct stf_isp_dev *isp_dev = v4l2_get_subdevdata(sd);
+	struct v4l2_subdev_state *sd_state;
+	struct v4l2_mbus_framefmt *fmt;
+	struct v4l2_rect *crop;
+
+	sd_state = v4l2_subdev_lock_and_get_active_state(sd);
+	fmt = v4l2_subdev_state_get_format(sd_state, STF_ISP_PAD_SINK);
+	crop = v4l2_subdev_state_get_crop(sd_state, STF_ISP_PAD_SRC);
+
+	if (enable) {
+		stf_isp_reset(isp_dev);
+		stf_isp_init_cfg(isp_dev);
+		stf_isp_settings(isp_dev, crop, fmt->code);
+		stf_isp_stream_set(isp_dev);
+	}
+
+	v4l2_subdev_call(isp_dev->source_subdev, video, s_stream, enable);
+
+	v4l2_subdev_unlock_state(sd_state);
+	return 0;
+}
+
+static void isp_try_format(struct stf_isp_dev *isp_dev,
+			   struct v4l2_subdev_state *state,
+			   unsigned int pad,
+			   struct v4l2_mbus_framefmt *fmt)
+{
+	const struct stf_isp_format_table *formats;
+
+	if (pad >= STF_ISP_PAD_MAX) {
+		fmt->colorspace = V4L2_COLORSPACE_SRGB;
+		return;
+	}
+
+	if (pad == STF_ISP_PAD_SINK)
+		formats = &isp_dev->formats[SINK_FORMATS_INDEX];
+	else if (pad == STF_ISP_PAD_SRC)
+		formats = &isp_dev->formats[SOURCE_FORMATS_INDEX];
+
+	fmt->width = clamp_t(u32, fmt->width, STFCAMSS_FRAME_MIN_WIDTH,
+			     STFCAMSS_FRAME_MAX_WIDTH);
+	fmt->height = clamp_t(u32, fmt->height, STFCAMSS_FRAME_MIN_HEIGHT,
+			      STFCAMSS_FRAME_MAX_HEIGHT);
+	fmt->height &= ~0x1;
+	fmt->field = V4L2_FIELD_NONE;
+	fmt->colorspace = V4L2_COLORSPACE_SRGB;
+	fmt->flags = 0;
+
+	if (!stf_g_fmt_by_mcode(formats, fmt->code))
+		fmt->code = formats->fmts[0].code;
+}
+
+static int isp_enum_mbus_code(struct v4l2_subdev *sd,
+			      struct v4l2_subdev_state *state,
+			      struct v4l2_subdev_mbus_code_enum *code)
+{
+	struct stf_isp_dev *isp_dev = v4l2_get_subdevdata(sd);
+	const struct stf_isp_format_table *formats;
+
+	if (code->pad == STF_ISP_PAD_SINK) {
+		if (code->index >= ARRAY_SIZE(isp_formats_sink))
+			return -EINVAL;
+
+		formats = &isp_dev->formats[SINK_FORMATS_INDEX];
+		code->code = formats->fmts[code->index].code;
+	} else {
+		struct v4l2_mbus_framefmt *sink_fmt;
+
+		if (code->index >= ARRAY_SIZE(isp_formats_source))
+			return -EINVAL;
+
+		sink_fmt = v4l2_subdev_state_get_format(state,
+							STF_ISP_PAD_SRC);
+
+		code->code = sink_fmt->code;
+		if (!code->code)
+			return -EINVAL;
+	}
+	code->flags = 0;
+
+	return 0;
+}
+
+static int isp_set_format(struct v4l2_subdev *sd,
+			  struct v4l2_subdev_state *state,
+			  struct v4l2_subdev_format *fmt)
+{
+	struct stf_isp_dev *isp_dev = v4l2_get_subdevdata(sd);
+	struct v4l2_mbus_framefmt *format;
+
+	format = v4l2_subdev_state_get_format(state, fmt->pad);
+	if (!format)
+		return -EINVAL;
+
+	isp_try_format(isp_dev, state, fmt->pad, &fmt->format);
+	*format = fmt->format;
+
+	isp_dev->current_fmt = stf_g_fmt_by_mcode(&isp_dev->formats[fmt->pad],
+						  fmt->format.code);
+
+	/* Propagate to in crop */
+	if (fmt->pad == STF_ISP_PAD_SINK) {
+		struct v4l2_subdev_selection sel = { 0 };
+
+		/* Reset sink pad compose selection */
+		sel.which = fmt->which;
+		sel.pad = STF_ISP_PAD_SINK;
+		sel.target = V4L2_SEL_TGT_CROP;
+		sel.r.width = fmt->format.width;
+		sel.r.height = fmt->format.height;
+		isp_set_selection(sd, state, &sel);
+	}
+
+	return 0;
+}
+
+static const struct v4l2_rect stf_frame_min_crop = {
+	.width = STFCAMSS_FRAME_MIN_WIDTH,
+	.height = STFCAMSS_FRAME_MIN_HEIGHT,
+	.top = 0,
+	.left = 0,
+};
+
+static void isp_try_crop(struct stf_isp_dev *isp_dev,
+			 struct v4l2_subdev_state *state,
+			 struct v4l2_rect *crop)
+{
+	struct v4l2_mbus_framefmt *fmt =
+		v4l2_subdev_state_get_format(state, STF_ISP_PAD_SINK);
+
+	const struct v4l2_rect bounds = {
+		.width = fmt->width,
+		.height = fmt->height,
+		.left = 0,
+		.top = 0,
+	};
+
+	v4l2_rect_set_min_size(crop, &stf_frame_min_crop);
+	v4l2_rect_map_inside(crop, &bounds);
+}
+
+static int isp_get_selection(struct v4l2_subdev *sd,
+			     struct v4l2_subdev_state *state,
+			     struct v4l2_subdev_selection *sel)
+{
+	struct v4l2_subdev_format fmt = { 0 };
+	struct v4l2_rect *rect;
+
+	switch (sel->target) {
+	case V4L2_SEL_TGT_CROP_BOUNDS:
+		if (sel->pad == STF_ISP_PAD_SINK) {
+			fmt.format = *v4l2_subdev_state_get_format(state,
+								   sel->pad);
+			sel->r.left = 0;
+			sel->r.top = 0;
+			sel->r.width = fmt.format.width;
+			sel->r.height = fmt.format.height;
+		} else if (sel->pad == STF_ISP_PAD_SRC) {
+			rect = v4l2_subdev_state_get_crop(state, sel->pad);
+			sel->r = *rect;
+		}
+		break;
+
+	case V4L2_SEL_TGT_CROP:
+		rect = v4l2_subdev_state_get_crop(state, sel->pad);
+		if (!rect)
+			return -EINVAL;
+
+		sel->r = *rect;
+		break;
+
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int isp_set_selection(struct v4l2_subdev *sd,
+			     struct v4l2_subdev_state *state,
+			     struct v4l2_subdev_selection *sel)
+{
+	struct stf_isp_dev *isp_dev = v4l2_get_subdevdata(sd);
+	struct v4l2_rect *rect;
+
+	if (sel->target != V4L2_SEL_TGT_CROP)
+		return -EINVAL;
+
+	if (sel->target == V4L2_SEL_TGT_CROP &&
+	    sel->pad == STF_ISP_PAD_SINK) {
+		struct v4l2_subdev_selection crop = { 0 };
+
+		rect = v4l2_subdev_state_get_crop(state, sel->pad);
+		if (!rect)
+			return -EINVAL;
+
+		isp_try_crop(isp_dev, state, &sel->r);
+		*rect = sel->r;
+
+		/* Reset source crop selection */
+		crop.which = sel->which;
+		crop.pad = STF_ISP_PAD_SRC;
+		crop.target = V4L2_SEL_TGT_CROP;
+		crop.r = *rect;
+		isp_set_selection(sd, state, &crop);
+	} else if (sel->target == V4L2_SEL_TGT_CROP &&
+		   sel->pad == STF_ISP_PAD_SRC) {
+		struct v4l2_subdev_format fmt = { 0 };
+
+		rect = v4l2_subdev_state_get_crop(state, sel->pad);
+		if (!rect)
+			return -EINVAL;
+
+		isp_try_crop(isp_dev, state, &sel->r);
+		*rect = sel->r;
+
+		/* Reset source pad format width and height */
+		fmt.which = sel->which;
+		fmt.pad = STF_ISP_PAD_SRC;
+		fmt.format.width = rect->width;
+		fmt.format.height = rect->height;
+		isp_set_format(sd, state, &fmt);
+	}
+
+	dev_dbg(isp_dev->stfcamss->dev, "pad: %d sel(%d,%d)/%dx%d\n",
+		sel->pad, sel->r.left, sel->r.top, sel->r.width, sel->r.height);
+
+	return 0;
+}
+
+static int isp_init_formats(struct v4l2_subdev *sd,
+			    struct v4l2_subdev_state *sd_state)
+{
+	struct v4l2_subdev_format format = {
+		.pad = STF_ISP_PAD_SINK,
+		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
+		.format = {
+			.code = MEDIA_BUS_FMT_SRGGB10_1X10,
+			.width = 1920,
+			.height = 1080
+		}
+	};
+
+	return isp_set_format(sd, sd_state, &format);
+}
+
+static const struct v4l2_subdev_video_ops isp_video_ops = {
+	.s_stream = isp_set_stream,
+};
+
+static const struct v4l2_subdev_pad_ops isp_pad_ops = {
+	.enum_mbus_code = isp_enum_mbus_code,
+	.get_fmt = v4l2_subdev_get_fmt,
+	.set_fmt = isp_set_format,
+	.get_selection = isp_get_selection,
+	.set_selection = isp_set_selection,
+};
+
+static const struct v4l2_subdev_ops isp_v4l2_ops = {
+	.video = &isp_video_ops,
+	.pad = &isp_pad_ops,
+};
+
+static const struct v4l2_subdev_internal_ops isp_internal_ops = {
+	.init_state = isp_init_formats,
+};
+
+static const struct media_entity_operations isp_media_ops = {
+	.link_validate = v4l2_subdev_link_validate,
+};
+
+int stf_isp_register(struct stf_isp_dev *isp_dev, struct v4l2_device *v4l2_dev)
+{
+	struct v4l2_subdev *sd = &isp_dev->subdev;
+	struct media_pad *pads = isp_dev->pads;
+	int ret;
+
+	v4l2_subdev_init(sd, &isp_v4l2_ops);
+	sd->internal_ops = &isp_internal_ops;
+	sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+	snprintf(sd->name, ARRAY_SIZE(sd->name), "stf_isp");
+	v4l2_set_subdevdata(sd, isp_dev);
+
+	pads[STF_ISP_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
+	pads[STF_ISP_PAD_SRC].flags = MEDIA_PAD_FL_SOURCE;
+
+	sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_ISP;
+	sd->entity.ops = &isp_media_ops;
+	ret = media_entity_pads_init(&sd->entity, STF_ISP_PAD_MAX, pads);
+	if (ret) {
+		dev_err(isp_dev->stfcamss->dev,
+			"Failed to init media entity: %d\n", ret);
+		return ret;
+	}
+
+	ret = v4l2_subdev_init_finalize(sd);
+	if (ret)
+		goto err_entity_cleanup;
+
+	ret = v4l2_device_register_subdev(v4l2_dev, sd);
+	if (ret) {
+		dev_err(isp_dev->stfcamss->dev,
+			"Failed to register subdev: %d\n", ret);
+		goto err_subdev_cleanup;
+	}
+
+	return 0;
+
+err_subdev_cleanup:
+	v4l2_subdev_cleanup(sd);
+err_entity_cleanup:
+	media_entity_cleanup(&sd->entity);
+	return ret;
+}
+
+int stf_isp_unregister(struct stf_isp_dev *isp_dev)
+{
+	v4l2_device_unregister_subdev(&isp_dev->subdev);
+	v4l2_subdev_cleanup(&isp_dev->subdev);
+	media_entity_cleanup(&isp_dev->subdev.entity);
+
+	return 0;
+}
diff --git a/drivers/staging/media/starfive/camss/stf-isp.h b/drivers/staging/media/starfive/camss/stf-isp.h
new file mode 100644
index 0000000000000..955cbb0483637
--- /dev/null
+++ b/drivers/staging/media/starfive/camss/stf-isp.h
@@ -0,0 +1,428 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * stf_isp.h
+ *
+ * StarFive Camera Subsystem - ISP Module
+ *
+ * Copyright (C) 2021-2023 StarFive Technology Co., Ltd.
+ */
+
+#ifndef STF_ISP_H
+#define STF_ISP_H
+
+#include <media/v4l2-subdev.h>
+
+#include "stf-video.h"
+
+#define ISP_RAW_DATA_BITS			12
+#define SCALER_RATIO_MAX			1
+#define STF_ISP_REG_OFFSET_MAX			0x0fff
+#define STF_ISP_REG_DELAY_MAX			100
+
+/* isp registers */
+#define ISP_REG_CSI_INPUT_EN_AND_STATUS		0x000
+#define CSI_SCD_ERR				BIT(6)
+#define CSI_ITU656_ERR				BIT(4)
+#define CSI_ITU656_F				BIT(3)
+#define CSI_SCD_DONE				BIT(2)
+#define CSI_BUSY_S				BIT(1)
+#define CSI_EN_S				BIT(0)
+
+#define ISP_REG_CSIINTS				0x008
+#define CSI_INTS(n)				((n) << 16)
+#define CSI_SHA_M(n)				((n) << 0)
+#define CSI_INTS_MASK				GENMASK(17, 16)
+
+#define ISP_REG_CSI_MODULE_CFG			0x010
+#define CSI_DUMP_EN				BIT(19)
+#define CSI_VS_EN				BIT(18)
+#define CSI_SC_EN				BIT(17)
+#define CSI_OBA_EN				BIT(16)
+#define CSI_AWB_EN				BIT(7)
+#define CSI_LCCF_EN				BIT(6)
+#define CSI_OECFHM_EN				BIT(5)
+#define CSI_OECF_EN				BIT(4)
+#define CSI_LCBQ_EN				BIT(3)
+#define CSI_OBC_EN				BIT(2)
+#define CSI_DEC_EN				BIT(1)
+#define CSI_DC_EN				BIT(0)
+
+#define ISP_REG_SENSOR				0x014
+#define DVP_SYNC_POL(n)				((n) << 2)
+#define ITU656_EN(n)				((n) << 1)
+#define IMAGER_SEL(n)				((n) << 0)
+
+#define ISP_REG_RAW_FORMAT_CFG			0x018
+#define SMY13(n)				((n) << 14)
+#define SMY12(n)				((n) << 12)
+#define SMY11(n)				((n) << 10)
+#define SMY10(n)				((n) << 8)
+#define SMY3(n)					((n) << 6)
+#define SMY2(n)					((n) << 4)
+#define SMY1(n)					((n) << 2)
+#define SMY0(n)					((n) << 0)
+
+#define ISP_REG_PIC_CAPTURE_START_CFG		0x01c
+#define VSTART_CAP(n)				((n) << 16)
+#define HSTART_CAP(n)				((n) << 0)
+
+#define ISP_REG_PIC_CAPTURE_END_CFG		0x020
+#define VEND_CAP(n)				((n) << 16)
+#define HEND_CAP(n)				((n) << 0)
+
+#define ISP_REG_DUMP_CFG_0			0x024
+#define ISP_REG_DUMP_CFG_1			0x028
+#define DUMP_ID(n)				((n) << 24)
+#define DUMP_SHT(n)				((n) << 20)
+#define DUMP_BURST_LEN(n)			((n) << 16)
+#define DUMP_SD(n)				((n) << 0)
+#define DUMP_BURST_LEN_MASK			GENMASK(17, 16)
+#define DUMP_SD_MASK				GENMASK(15, 0)
+
+#define ISP_REG_DEC_CFG				0x030
+#define DEC_V_KEEP(n)				((n) << 24)
+#define DEC_V_PERIOD(n)				((n) << 16)
+#define DEC_H_KEEP(n)				((n) << 8)
+#define DEC_H_PERIOD(n)				((n) << 0)
+
+#define ISP_REG_OBC_CFG				0x034
+#define OBC_W_H(y)				((y) << 4)
+#define OBC_W_W(x)				((x) << 0)
+
+#define ISP_REG_DC_CFG_1			0x044
+#define DC_AXI_ID(n)				((n) << 0)
+
+#define ISP_REG_LCCF_CFG_0			0x050
+#define Y_DISTANCE(y)				((y) << 16)
+#define X_DISTANCE(x)				((x) << 0)
+
+#define ISP_REG_LCCF_CFG_1			0x058
+#define LCCF_MAX_DIS(n)				((n) << 0)
+
+#define ISP_REG_LCBQ_CFG_0			0x074
+#define H_LCBQ(y)				((y) << 12)
+#define W_LCBQ(x)				((x) << 8)
+
+#define ISP_REG_LCBQ_CFG_1			0x07c
+#define Y_COOR(y)				((y) << 16)
+#define X_COOR(x)				((x) << 0)
+
+#define ISP_REG_LCCF_CFG_2			0x0e0
+#define ISP_REG_LCCF_CFG_3			0x0e4
+#define ISP_REG_LCCF_CFG_4			0x0e8
+#define ISP_REG_LCCF_CFG_5			0x0ec
+#define LCCF_F2_PAR(n)				((n) << 16)
+#define LCCF_F1_PAR(n)				((n) << 0)
+
+#define ISP_REG_OECF_X0_CFG0			0x100
+#define ISP_REG_OECF_X0_CFG1			0x104
+#define ISP_REG_OECF_X0_CFG2			0x108
+#define ISP_REG_OECF_X0_CFG3			0x10c
+#define ISP_REG_OECF_X0_CFG4			0x110
+#define ISP_REG_OECF_X0_CFG5			0x114
+#define ISP_REG_OECF_X0_CFG6			0x118
+#define ISP_REG_OECF_X0_CFG7			0x11c
+
+#define ISP_REG_OECF_Y3_CFG0			0x1e0
+#define ISP_REG_OECF_Y3_CFG1			0x1e4
+#define ISP_REG_OECF_Y3_CFG2			0x1e8
+#define ISP_REG_OECF_Y3_CFG3			0x1ec
+#define ISP_REG_OECF_Y3_CFG4			0x1f0
+#define ISP_REG_OECF_Y3_CFG5			0x1f4
+#define ISP_REG_OECF_Y3_CFG6			0x1f8
+#define ISP_REG_OECF_Y3_CFG7			0x1fc
+
+#define ISP_REG_OECF_S0_CFG0			0x200
+#define ISP_REG_OECF_S3_CFG7			0x27c
+#define OCEF_PAR_H(n)				((n) << 16)
+#define OCEF_PAR_L(n)				((n) << 0)
+
+#define ISP_REG_AWB_X0_CFG_0			0x280
+#define ISP_REG_AWB_X0_CFG_1			0x284
+#define ISP_REG_AWB_X1_CFG_0			0x288
+#define ISP_REG_AWB_X1_CFG_1			0x28c
+#define ISP_REG_AWB_X2_CFG_0			0x290
+#define ISP_REG_AWB_X2_CFG_1			0x294
+#define ISP_REG_AWB_X3_CFG_0			0x298
+#define ISP_REG_AWB_X3_CFG_1			0x29c
+#define AWB_X_SYMBOL_H(n)			((n) << 16)
+#define AWB_X_SYMBOL_L(n)			((n) << 0)
+
+#define ISP_REG_AWB_Y0_CFG_0			0x2a0
+#define ISP_REG_AWB_Y0_CFG_1			0x2a4
+#define ISP_REG_AWB_Y1_CFG_0			0x2a8
+#define ISP_REG_AWB_Y1_CFG_1			0x2ac
+#define ISP_REG_AWB_Y2_CFG_0			0x2b0
+#define ISP_REG_AWB_Y2_CFG_1			0x2b4
+#define ISP_REG_AWB_Y3_CFG_0			0x2b8
+#define ISP_REG_AWB_Y3_CFG_1			0x2bc
+#define AWB_Y_SYMBOL_H(n)			((n) << 16)
+#define AWB_Y_SYMBOL_L(n)			((n) << 0)
+
+#define ISP_REG_AWB_S0_CFG_0			0x2c0
+#define ISP_REG_AWB_S0_CFG_1			0x2c4
+#define ISP_REG_AWB_S1_CFG_0			0x2c8
+#define ISP_REG_AWB_S1_CFG_1			0x2cc
+#define ISP_REG_AWB_S2_CFG_0			0x2d0
+#define ISP_REG_AWB_S2_CFG_1			0x2d4
+#define ISP_REG_AWB_S3_CFG_0			0x2d8
+#define ISP_REG_AWB_S3_CFG_1			0x2dc
+#define AWB_S_SYMBOL_H(n)			((n) << 16)
+#define AWB_S_SYMBOL_L(n)			((n) << 0)
+
+#define ISP_REG_OBCG_CFG_0			0x2e0
+#define ISP_REG_OBCG_CFG_1			0x2e4
+#define ISP_REG_OBCG_CFG_2			0x2e8
+#define ISP_REG_OBCG_CFG_3			0x2ec
+#define ISP_REG_OBCO_CFG_0			0x2f0
+#define ISP_REG_OBCO_CFG_1			0x2f4
+#define ISP_REG_OBCO_CFG_2			0x2f8
+#define ISP_REG_OBCO_CFG_3			0x2fc
+#define GAIN_D_POINT(x)				((x) << 24)
+#define GAIN_C_POINT(x)				((x) << 16)
+#define GAIN_B_POINT(x)				((x) << 8)
+#define GAIN_A_POINT(x)				((x) << 0)
+#define OFFSET_D_POINT(x)			((x) << 24)
+#define OFFSET_C_POINT(x)			((x) << 16)
+#define OFFSET_B_POINT(x)			((x) << 8)
+#define OFFSET_A_POINT(x)			((x) << 0)
+
+#define ISP_REG_ISP_CTRL_0			0xa00
+#define ISPC_LINE				BIT(27)
+#define ISPC_SC					BIT(26)
+#define ISPC_CSI				BIT(25)
+#define ISPC_ISP				BIT(24)
+#define ISPC_ENUO				BIT(20)
+#define ISPC_ENLS				BIT(17)
+#define ISPC_ENSS1				BIT(12)
+#define ISPC_ENSS0				BIT(11)
+#define ISPC_RST				BIT(1)
+#define ISPC_EN					BIT(0)
+#define ISPC_RST_MASK				BIT(1)
+#define ISPC_INT_ALL_MASK			GENMASK(27, 24)
+
+#define ISP_REG_ISP_CTRL_1			0xa08
+#define CTRL_SAT(n)				((n) << 28)
+#define CTRL_DBC				BIT(22)
+#define CTRL_CTC				BIT(21)
+#define CTRL_YHIST				BIT(20)
+#define CTRL_YCURVE				BIT(19)
+#define CTRL_CTM				BIT(18)
+#define CTRL_BIYUV				BIT(17)
+#define CTRL_SCE				BIT(8)
+#define CTRL_EE					BIT(7)
+#define CTRL_CCE				BIT(5)
+#define CTRL_RGE				BIT(4)
+#define CTRL_CME				BIT(3)
+#define CTRL_AE					BIT(2)
+#define CTRL_CE					BIT(1)
+#define CTRL_SAT_MASK				GENMASK(31, 28)
+
+#define ISP_REG_PIPELINE_XY_SIZE		0xa0c
+#define H_ACT_CAP(n)				((n) << 16)
+#define W_ACT_CAP(n)				((n) << 0)
+
+#define ISP_REG_ICTC				0xa10
+#define GF_MODE(n)				((n) << 30)
+#define MAXGT(n)				((n) << 16)
+#define MINGT(n)				((n) << 0)
+
+#define ISP_REG_IDBC				0xa14
+#define BADGT(n)				((n) << 16)
+#define BADXT(n)				((n) << 0)
+
+#define ISP_REG_ICFAM				0xa1c
+#define CROSS_COV(n)				((n) << 4)
+#define HV_W(n)					((n) << 0)
+
+#define ISP_REG_CS_GAIN				0xa30
+#define CMAD(n)					((n) << 16)
+#define CMAB(n)					((n) << 0)
+
+#define ISP_REG_CS_THRESHOLD			0xa34
+#define CMD(n)					((n) << 16)
+#define CMB(n)					((n) << 0)
+
+#define ISP_REG_CS_OFFSET			0xa38
+#define VOFF(n)					((n) << 16)
+#define UOFF(n)					((n) << 0)
+
+#define ISP_REG_CS_HUE_F			0xa3c
+#define SIN(n)					((n) << 16)
+#define COS(n)					((n) << 0)
+
+#define ISP_REG_CS_SCALE			0xa40
+
+#define ISP_REG_IESHD				0xa50
+#define SHAD_UP_M				BIT(1)
+#define SHAD_UP_EN				BIT(0)
+
+#define ISP_REG_YADJ0				0xa54
+#define YOIR(n)					((n) << 16)
+#define YIMIN(n)				((n) << 0)
+
+#define ISP_REG_YADJ1				0xa58
+#define YOMAX(n)				((n) << 16)
+#define YOMIN(n)				((n) << 0)
+
+#define ISP_REG_Y_PLANE_START_ADDR		0xa80
+#define ISP_REG_UV_PLANE_START_ADDR		0xa84
+#define ISP_REG_STRIDE				0xa88
+
+#define ISP_REG_ITIIWSR				0xb20
+#define ITI_HSIZE(n)				((n) << 16)
+#define ITI_WSIZE(n)				((n) << 0)
+
+#define ISP_REG_ITIDWLSR			0xb24
+#define ISP_REG_ITIPDFR				0xb38
+#define ISP_REG_ITIDRLSR			0xb3C
+
+#define ISP_REG_DNYUV_YSWR0			0xc00
+#define ISP_REG_DNYUV_YSWR1			0xc04
+#define ISP_REG_DNYUV_CSWR0			0xc08
+#define ISP_REG_DNYUV_CSWR1			0xc0c
+#define YUVSW5(n)				((n) << 20)
+#define YUVSW4(n)				((n) << 16)
+#define YUVSW3(n)				((n) << 12)
+#define YUVSW2(n)				((n) << 8)
+#define YUVSW1(n)				((n) << 4)
+#define YUVSW0(n)				((n) << 0)
+
+#define ISP_REG_DNYUV_YDR0			0xc10
+#define ISP_REG_DNYUV_YDR1			0xc14
+#define ISP_REG_DNYUV_YDR2			0xc18
+#define ISP_REG_DNYUV_CDR0			0xc1c
+#define ISP_REG_DNYUV_CDR1			0xc20
+#define ISP_REG_DNYUV_CDR2			0xc24
+#define CURVE_D_H(n)				((n) << 16)
+#define CURVE_D_L(n)				((n) << 0)
+
+#define ISP_REG_ICAMD_0				0xc40
+#define ISP_REG_ICAMD_12			0xc70
+#define ISP_REG_ICAMD_20			0xc90
+#define ISP_REG_ICAMD_24			0xca0
+#define ISP_REG_ICAMD_25			0xca4
+#define DNRM_F(n)				((n) << 16)
+#define CCM_M_DAT(n)				((n) << 0)
+
+#define ISP_REG_GAMMA_VAL0			0xe00
+#define ISP_REG_GAMMA_VAL1			0xe04
+#define ISP_REG_GAMMA_VAL2			0xe08
+#define ISP_REG_GAMMA_VAL3			0xe0c
+#define ISP_REG_GAMMA_VAL4			0xe10
+#define ISP_REG_GAMMA_VAL5			0xe14
+#define ISP_REG_GAMMA_VAL6			0xe18
+#define ISP_REG_GAMMA_VAL7			0xe1c
+#define ISP_REG_GAMMA_VAL8			0xe20
+#define ISP_REG_GAMMA_VAL9			0xe24
+#define ISP_REG_GAMMA_VAL10			0xe28
+#define ISP_REG_GAMMA_VAL11			0xe2c
+#define ISP_REG_GAMMA_VAL12			0xe30
+#define ISP_REG_GAMMA_VAL13			0xe34
+#define ISP_REG_GAMMA_VAL14			0xe38
+#define GAMMA_S_VAL(n)				((n) << 16)
+#define GAMMA_VAL(n)				((n) << 0)
+
+#define ISP_REG_R2Y_0				0xe40
+#define ISP_REG_R2Y_1				0xe44
+#define ISP_REG_R2Y_2				0xe48
+#define ISP_REG_R2Y_3				0xe4c
+#define ISP_REG_R2Y_4				0xe50
+#define ISP_REG_R2Y_5				0xe54
+#define ISP_REG_R2Y_6				0xe58
+#define ISP_REG_R2Y_7				0xe5c
+#define ISP_REG_R2Y_8				0xe60
+
+#define ISP_REG_SHARPEN0			0xe80
+#define ISP_REG_SHARPEN1			0xe84
+#define ISP_REG_SHARPEN2			0xe88
+#define ISP_REG_SHARPEN3			0xe8c
+#define ISP_REG_SHARPEN4			0xe90
+#define ISP_REG_SHARPEN5			0xe94
+#define ISP_REG_SHARPEN6			0xe98
+#define ISP_REG_SHARPEN7			0xe9c
+#define ISP_REG_SHARPEN8			0xea0
+#define ISP_REG_SHARPEN9			0xea4
+#define ISP_REG_SHARPEN10			0xea8
+#define ISP_REG_SHARPEN11			0xeac
+#define ISP_REG_SHARPEN12			0xeb0
+#define ISP_REG_SHARPEN13			0xeb4
+#define ISP_REG_SHARPEN14			0xeb8
+#define S_DELTA(n)				((n) << 16)
+#define S_WEIGHT(n)				((n) << 8)
+
+#define ISP_REG_SHARPEN_FS0			0xebc
+#define ISP_REG_SHARPEN_FS1			0xec0
+#define ISP_REG_SHARPEN_FS2			0xec4
+#define ISP_REG_SHARPEN_FS3			0xec8
+#define ISP_REG_SHARPEN_FS4			0xecc
+#define ISP_REG_SHARPEN_FS5			0xed0
+#define S_FACTOR(n)				((n) << 24)
+#define S_SLOPE(n)				((n) << 0)
+
+#define ISP_REG_SHARPEN_WN			0xed4
+#define PDIRF(n)				((n) << 28)
+#define NDIRF(n)				((n) << 24)
+#define WSUM(n)					((n) << 0)
+
+#define ISP_REG_IUVS1				0xed8
+#define UVDIFF2(n)				((n) << 16)
+#define UVDIFF1(n)				((n) << 0)
+
+#define ISP_REG_IUVS2				0xedc
+#define UVF(n)					((n) << 24)
+#define UVSLOPE(n)				((n) << 0)
+
+#define ISP_REG_IUVCKS1				0xee0
+#define UVCKDIFF2(n)				((n) << 16)
+#define UVCKDIFF1(n)				((n) << 0)
+
+#define ISP_REG_IUVCKS2				0xee4
+
+#define ISP_REG_ISHRPET				0xee8
+#define TH(n)					((n) << 8)
+#define EN(n)					((n) << 0)
+
+#define ISP_REG_YCURVE_0			0xf00
+#define ISP_REG_YCURVE_63			0xffc
+
+#define IMAGE_MAX_WIDTH				1920
+#define IMAGE_MAX_HEIGH				1080
+
+/* pad id for media framework */
+enum stf_isp_pad_id {
+	STF_ISP_PAD_SINK = 0,
+	STF_ISP_PAD_SRC,
+	STF_ISP_PAD_MAX
+};
+
+struct stf_isp_format {
+	u32 code;
+	u8 bpp;
+};
+
+struct stf_isp_format_table {
+	const struct stf_isp_format *fmts;
+	int nfmts;
+};
+
+struct stf_isp_dev {
+	struct stfcamss *stfcamss;
+	struct v4l2_subdev subdev;
+	struct media_pad pads[STF_ISP_PAD_MAX];
+	const struct stf_isp_format_table *formats;
+	unsigned int nformats;
+	struct v4l2_subdev *source_subdev;
+	const struct stf_isp_format *current_fmt;
+};
+
+int stf_isp_reset(struct stf_isp_dev *isp_dev);
+void stf_isp_init_cfg(struct stf_isp_dev *isp_dev);
+void stf_isp_settings(struct stf_isp_dev *isp_dev,
+		      struct v4l2_rect *crop, u32 mcode);
+void stf_isp_stream_set(struct stf_isp_dev *isp_dev);
+int stf_isp_init(struct stfcamss *stfcamss);
+int stf_isp_register(struct stf_isp_dev *isp_dev, struct v4l2_device *v4l2_dev);
+int stf_isp_unregister(struct stf_isp_dev *isp_dev);
+
+#endif /* STF_ISP_H */
diff --git a/drivers/staging/media/starfive/camss/stf-video.c b/drivers/staging/media/starfive/camss/stf-video.c
new file mode 100644
index 0000000000000..989b5e82bae98
--- /dev/null
+++ b/drivers/staging/media/starfive/camss/stf-video.c
@@ -0,0 +1,572 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * stf_video.c
+ *
+ * StarFive Camera Subsystem - V4L2 device node
+ *
+ * Copyright (C) 2021-2023 StarFive Technology Co., Ltd.
+ */
+
+#include <linux/pm_runtime.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-mc.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "stf-camss.h"
+#include "stf-video.h"
+
+/* -----------------------------------------------------------------------------
+ * Helper functions
+ */
+
+static inline struct stfcamss_buffer *
+to_stfcamss_buffer(struct vb2_v4l2_buffer *vbuf)
+{
+	return container_of(vbuf, struct stfcamss_buffer, vb);
+}
+
+static const struct stfcamss_format_info *
+video_g_fi_by_index(struct stfcamss_video *video, int index)
+{
+	if (index >= video->nformats)
+		return NULL;
+
+	return &video->formats[index];
+}
+
+static const struct stfcamss_format_info *
+video_g_fi_by_mcode(struct stfcamss_video *video, u32 mcode)
+{
+	unsigned int i;
+
+	for (i = 0; i < video->nformats; i++) {
+		if (video->formats[i].code == mcode)
+			return &video->formats[i];
+	}
+
+	return NULL;
+}
+
+static const struct stfcamss_format_info *
+video_g_fi_by_pfmt(struct stfcamss_video *video, u32 pixelformat)
+{
+	unsigned int i;
+
+	for (i = 0; i < video->nformats; i++) {
+		if (video->formats[i].pixelformat == pixelformat)
+			return &video->formats[i];
+	}
+
+	return NULL;
+}
+
+static int __video_try_fmt(struct stfcamss_video *video, struct v4l2_format *f)
+{
+	struct v4l2_pix_format *pix = &f->fmt.pix;
+	const struct stfcamss_format_info *fi;
+	u32 width, height;
+	u32 bpl;
+	unsigned int i;
+
+	fi = video_g_fi_by_pfmt(video, pix->pixelformat);
+	if (!fi)
+		fi = &video->formats[0]; /* default format */
+
+	width = pix->width;
+	height = pix->height;
+
+	memset(pix, 0, sizeof(*pix));
+
+	pix->pixelformat = fi->pixelformat;
+	pix->width = clamp_t(u32, width, STFCAMSS_FRAME_MIN_WIDTH,
+			     STFCAMSS_FRAME_MAX_WIDTH);
+	pix->height = clamp_t(u32, height, STFCAMSS_FRAME_MIN_HEIGHT,
+			      STFCAMSS_FRAME_MAX_HEIGHT);
+	bpl = pix->width * fi->bpp / 8;
+	bpl = ALIGN(bpl, video->bpl_alignment);
+	pix->bytesperline = bpl;
+
+	for (i = 0; i < fi->planes; ++i)
+		pix->sizeimage += bpl * pix->height / fi->vsub[i];
+
+	pix->field = V4L2_FIELD_NONE;
+	pix->colorspace = V4L2_COLORSPACE_SRGB;
+	pix->flags = 0;
+	pix->ycbcr_enc =
+		V4L2_MAP_YCBCR_ENC_DEFAULT(pix->colorspace);
+	pix->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
+							  pix->colorspace,
+							  pix->ycbcr_enc);
+	pix->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pix->colorspace);
+
+	return 0;
+}
+
+static int stf_video_init_format(struct stfcamss_video *video)
+{
+	int ret;
+	struct v4l2_format format = {
+		.type = video->type,
+		.fmt.pix = {
+			.width = 1920,
+			.height = 1080,
+			.pixelformat = V4L2_PIX_FMT_NV12,
+		},
+	};
+
+	ret = __video_try_fmt(video, &format);
+
+	if (ret < 0)
+		return ret;
+
+	video->active_fmt = format;
+
+	return 0;
+}
+
+/* -----------------------------------------------------------------------------
+ * Video queue operations
+ */
+
+static int video_queue_setup(struct vb2_queue *q,
+			     unsigned int *num_buffers,
+			     unsigned int *num_planes,
+			     unsigned int sizes[],
+			     struct device *alloc_devs[])
+{
+	struct stfcamss_video *video = vb2_get_drv_priv(q);
+	const struct v4l2_pix_format *format = &video->active_fmt.fmt.pix;
+
+	if (*num_planes) {
+		if (*num_planes != 1)
+			return -EINVAL;
+
+		if (sizes[0] < format->sizeimage)
+			return -EINVAL;
+	} else {
+		*num_planes = 1;
+		sizes[0] = format->sizeimage;
+	}
+
+	if (!sizes[0]) {
+		dev_dbg(video->stfcamss->dev,
+			"%s: error size is zero.\n", __func__);
+		return -EINVAL;
+	}
+
+	dev_dbg(video->stfcamss->dev, "planes = %d, size = %d\n",
+		*num_planes, sizes[0]);
+
+	return 0;
+}
+
+static int video_buf_init(struct vb2_buffer *vb)
+{
+	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+	struct stfcamss_video *video = vb2_get_drv_priv(vb->vb2_queue);
+	struct stfcamss_buffer *buffer = to_stfcamss_buffer(vbuf);
+	const struct v4l2_pix_format *fmt = &video->active_fmt.fmt.pix;
+	dma_addr_t *paddr;
+
+	paddr = vb2_plane_cookie(vb, 0);
+	buffer->addr[0] = *paddr;
+
+	if (fmt->pixelformat == V4L2_PIX_FMT_NV12)
+		buffer->addr[1] =
+			buffer->addr[0] + fmt->bytesperline * fmt->height;
+
+	return 0;
+}
+
+static int video_buf_prepare(struct vb2_buffer *vb)
+{
+	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+	struct stfcamss_video *video = vb2_get_drv_priv(vb->vb2_queue);
+	const struct v4l2_pix_format *fmt = &video->active_fmt.fmt.pix;
+
+	if (fmt->sizeimage > vb2_plane_size(vb, 0)) {
+		dev_dbg(video->stfcamss->dev,
+			"sizeimage = %u, plane size = %u\n",
+			fmt->sizeimage, (unsigned int)vb2_plane_size(vb, 0));
+		return -EINVAL;
+	}
+	vb2_set_plane_payload(vb, 0, fmt->sizeimage);
+
+	vbuf->field = V4L2_FIELD_NONE;
+
+	return 0;
+}
+
+static void video_buf_queue(struct vb2_buffer *vb)
+{
+	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+	struct stfcamss_video *video = vb2_get_drv_priv(vb->vb2_queue);
+	struct stfcamss_buffer *buffer = to_stfcamss_buffer(vbuf);
+
+	video->ops->queue_buffer(video, buffer);
+}
+
+static int video_get_subdev_format(struct stfcamss_video *video,
+				   struct v4l2_subdev_format *fmt)
+{
+	struct v4l2_subdev *subdev;
+	struct media_pad *pad;
+	struct media_entity *entity;
+	int ret;
+
+	entity = &video->vdev.entity;
+	while (1) {
+		pad = &entity->pads[0];
+		if (!(pad->flags & MEDIA_PAD_FL_SINK))
+			break;
+
+		pad = media_pad_remote_pad_first(pad);
+		if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
+			break;
+
+		entity = pad->entity;
+		subdev = media_entity_to_v4l2_subdev(entity);
+
+		fmt->pad = pad->index;
+
+		ret = v4l2_subdev_call_state_active(subdev, pad, get_fmt, fmt);
+		if (ret < 0 && ret != -ENOIOCTLCMD)
+			return ret;
+		else if (!ret)
+			break;
+	}
+
+	return 0;
+}
+
+static int stf_video_check_format(struct stfcamss_video *video)
+{
+	struct v4l2_pix_format *pix = &video->active_fmt.fmt.pix;
+	const struct stfcamss_format_info *fi;
+	int ret;
+	struct v4l2_subdev_format sd_fmt = {
+		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
+	};
+
+	ret = video_get_subdev_format(video, &sd_fmt);
+	if (ret < 0)
+		return ret;
+
+	fi = video_g_fi_by_mcode(video, sd_fmt.format.code);
+	if (!fi)
+		return -EINVAL;
+
+	if (pix->pixelformat != fi->pixelformat ||
+	    pix->height != sd_fmt.format.height ||
+	    pix->width != sd_fmt.format.width ||
+	    pix->field != sd_fmt.format.field)
+		return -EPIPE;
+
+	return 0;
+}
+
+static int video_start_streaming(struct vb2_queue *q, unsigned int count)
+{
+	struct stfcamss_video *video = vb2_get_drv_priv(q);
+	struct video_device *vdev = &video->vdev;
+	int ret;
+
+	ret = video_device_pipeline_start(vdev, &video->stfcamss->pipe);
+	if (ret < 0) {
+		dev_err(video->stfcamss->dev,
+			"Failed to media_pipeline_start: %d\n", ret);
+		goto err_ret_buffers;
+	}
+
+	ret = pm_runtime_resume_and_get(video->stfcamss->dev);
+	if (ret < 0) {
+		dev_err(video->stfcamss->dev, "power up failed %d\n", ret);
+		goto err_pipeline_stop;
+	}
+
+	video->ops->start_streaming(video);
+
+	ret = v4l2_subdev_call(video->source_subdev, video, s_stream, true);
+	if (ret) {
+		dev_err(video->stfcamss->dev, "stream on failed\n");
+		goto err_pm_put;
+	}
+
+	return 0;
+
+err_pm_put:
+	pm_runtime_put(video->stfcamss->dev);
+err_pipeline_stop:
+	video_device_pipeline_stop(vdev);
+err_ret_buffers:
+	video->ops->flush_buffers(video, VB2_BUF_STATE_QUEUED);
+	return ret;
+}
+
+static void video_stop_streaming(struct vb2_queue *q)
+{
+	struct stfcamss_video *video = vb2_get_drv_priv(q);
+	struct video_device *vdev = &video->vdev;
+
+	video->ops->stop_streaming(video);
+
+	v4l2_subdev_call(video->source_subdev, video, s_stream, false);
+
+	pm_runtime_put(video->stfcamss->dev);
+
+	video_device_pipeline_stop(vdev);
+	video->ops->flush_buffers(video, VB2_BUF_STATE_ERROR);
+}
+
+static const struct vb2_ops stf_video_vb2_q_ops = {
+	.queue_setup     = video_queue_setup,
+	.wait_prepare    = vb2_ops_wait_prepare,
+	.wait_finish     = vb2_ops_wait_finish,
+	.buf_init        = video_buf_init,
+	.buf_prepare     = video_buf_prepare,
+	.buf_queue       = video_buf_queue,
+	.start_streaming = video_start_streaming,
+	.stop_streaming  = video_stop_streaming,
+};
+
+/* -----------------------------------------------------------------------------
+ * V4L2 ioctls
+ */
+
+static int video_querycap(struct file *file, void *fh,
+			  struct v4l2_capability *cap)
+{
+	strscpy(cap->driver, "starfive-camss", sizeof(cap->driver));
+	strscpy(cap->card, "Starfive Camera Subsystem", sizeof(cap->card));
+
+	return 0;
+}
+
+static int video_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f)
+{
+	struct stfcamss_video *video = video_drvdata(file);
+	const struct stfcamss_format_info *fi;
+
+	if (f->index >= video->nformats)
+		return -EINVAL;
+
+	if (f->mbus_code) {
+		/* Each entry in formats[] table has unique mbus_code */
+		if (f->index > 0)
+			return -EINVAL;
+
+		fi = video_g_fi_by_mcode(video, f->mbus_code);
+	} else {
+		fi = video_g_fi_by_index(video, f->index);
+	}
+
+	if (!fi)
+		return -EINVAL;
+
+	f->pixelformat = fi->pixelformat;
+
+	return 0;
+}
+
+static int video_enum_framesizes(struct file *file, void *fh,
+				 struct v4l2_frmsizeenum *fsize)
+{
+	struct stfcamss_video *video = video_drvdata(file);
+	unsigned int i;
+
+	if (fsize->index)
+		return -EINVAL;
+
+	for (i = 0; i < video->nformats; i++) {
+		if (video->formats[i].pixelformat == fsize->pixel_format)
+			break;
+	}
+
+	if (i == video->nformats)
+		return -EINVAL;
+
+	fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
+	fsize->stepwise.min_width = STFCAMSS_FRAME_MIN_WIDTH;
+	fsize->stepwise.max_width = STFCAMSS_FRAME_MAX_WIDTH;
+	fsize->stepwise.min_height = STFCAMSS_FRAME_MIN_HEIGHT;
+	fsize->stepwise.max_height = STFCAMSS_FRAME_MAX_HEIGHT;
+	fsize->stepwise.step_width = 1;
+	fsize->stepwise.step_height = 1;
+
+	return 0;
+}
+
+static int video_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
+{
+	struct stfcamss_video *video = video_drvdata(file);
+
+	*f = video->active_fmt;
+
+	return 0;
+}
+
+static int video_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
+{
+	struct stfcamss_video *video = video_drvdata(file);
+	int ret;
+
+	if (vb2_is_busy(&video->vb2_q))
+		return -EBUSY;
+
+	ret = __video_try_fmt(video, f);
+	if (ret < 0)
+		return ret;
+
+	video->active_fmt = *f;
+
+	return 0;
+}
+
+static int video_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
+{
+	struct stfcamss_video *video = video_drvdata(file);
+
+	return __video_try_fmt(video, f);
+}
+
+static const struct v4l2_ioctl_ops stf_vid_ioctl_ops = {
+	.vidioc_querycap                = video_querycap,
+	.vidioc_enum_fmt_vid_cap        = video_enum_fmt,
+	.vidioc_enum_framesizes         = video_enum_framesizes,
+	.vidioc_g_fmt_vid_cap           = video_g_fmt,
+	.vidioc_s_fmt_vid_cap           = video_s_fmt,
+	.vidioc_try_fmt_vid_cap         = video_try_fmt,
+	.vidioc_reqbufs                 = vb2_ioctl_reqbufs,
+	.vidioc_querybuf                = vb2_ioctl_querybuf,
+	.vidioc_qbuf                    = vb2_ioctl_qbuf,
+	.vidioc_expbuf                  = vb2_ioctl_expbuf,
+	.vidioc_dqbuf                   = vb2_ioctl_dqbuf,
+	.vidioc_create_bufs             = vb2_ioctl_create_bufs,
+	.vidioc_prepare_buf             = vb2_ioctl_prepare_buf,
+	.vidioc_streamon                = vb2_ioctl_streamon,
+	.vidioc_streamoff               = vb2_ioctl_streamoff,
+};
+
+/* -----------------------------------------------------------------------------
+ * V4L2 file operations
+ */
+
+static const struct v4l2_file_operations stf_vid_fops = {
+	.owner          = THIS_MODULE,
+	.unlocked_ioctl = video_ioctl2,
+	.open           = v4l2_fh_open,
+	.release        = vb2_fop_release,
+	.poll           = vb2_fop_poll,
+	.mmap           = vb2_fop_mmap,
+	.read           = vb2_fop_read,
+};
+
+/* -----------------------------------------------------------------------------
+ * STFCAMSS video core
+ */
+
+static int stf_link_validate(struct media_link *link)
+{
+	struct video_device *vdev =
+		media_entity_to_video_device(link->sink->entity);
+	struct stfcamss_video *video = video_get_drvdata(vdev);
+	int ret;
+
+	ret = stf_video_check_format(video);
+
+	return ret;
+}
+
+static const struct media_entity_operations stf_media_ops = {
+	.link_validate = stf_link_validate,
+};
+
+static void stf_video_release(struct video_device *vdev)
+{
+	struct stfcamss_video *video = video_get_drvdata(vdev);
+
+	media_entity_cleanup(&vdev->entity);
+
+	mutex_destroy(&video->q_lock);
+	mutex_destroy(&video->lock);
+}
+
+int stf_video_register(struct stfcamss_video *video,
+		       struct v4l2_device *v4l2_dev, const char *name)
+{
+	struct video_device *vdev = &video->vdev;
+	struct vb2_queue *q;
+	struct media_pad *pad = &video->pad;
+	int ret;
+
+	mutex_init(&video->q_lock);
+	mutex_init(&video->lock);
+
+	q = &video->vb2_q;
+	q->drv_priv = video;
+	q->mem_ops = &vb2_dma_contig_memops;
+	q->ops = &stf_video_vb2_q_ops;
+	q->type = video->type;
+	q->io_modes = VB2_DMABUF | VB2_MMAP;
+	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+	q->buf_struct_size = sizeof(struct stfcamss_buffer);
+	q->dev = video->stfcamss->dev;
+	q->lock = &video->q_lock;
+	q->min_queued_buffers = STFCAMSS_MIN_BUFFERS;
+	ret = vb2_queue_init(q);
+	if (ret < 0) {
+		dev_err(video->stfcamss->dev,
+			"Failed to init vb2 queue: %d\n", ret);
+		goto err_mutex_destroy;
+	}
+
+	pad->flags = MEDIA_PAD_FL_SINK;
+	ret = media_entity_pads_init(&vdev->entity, 1, pad);
+	if (ret < 0) {
+		dev_err(video->stfcamss->dev,
+			"Failed to init video entity: %d\n", ret);
+		goto err_mutex_destroy;
+	}
+
+	ret = stf_video_init_format(video);
+	if (ret < 0) {
+		dev_err(video->stfcamss->dev,
+			"Failed to init format: %d\n", ret);
+		goto err_media_cleanup;
+	}
+
+	vdev->fops = &stf_vid_fops;
+	vdev->ioctl_ops = &stf_vid_ioctl_ops;
+	vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
+	vdev->entity.ops = &stf_media_ops;
+	vdev->vfl_dir = VFL_DIR_RX;
+	vdev->release = stf_video_release;
+	vdev->v4l2_dev = v4l2_dev;
+	vdev->queue = &video->vb2_q;
+	vdev->lock = &video->lock;
+	strscpy(vdev->name, name, sizeof(vdev->name));
+
+	video_set_drvdata(vdev, video);
+
+	ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
+	if (ret < 0) {
+		dev_err(video->stfcamss->dev,
+			"Failed to register video device: %d\n", ret);
+		goto err_media_cleanup;
+	}
+
+	return 0;
+
+err_media_cleanup:
+	media_entity_cleanup(&vdev->entity);
+err_mutex_destroy:
+	mutex_destroy(&video->lock);
+	mutex_destroy(&video->q_lock);
+	return ret;
+}
+
+void stf_video_unregister(struct stfcamss_video *video)
+{
+	vb2_video_unregister_device(&video->vdev);
+}
diff --git a/drivers/staging/media/starfive/camss/stf-video.h b/drivers/staging/media/starfive/camss/stf-video.h
new file mode 100644
index 0000000000000..8052b77e3ad83
--- /dev/null
+++ b/drivers/staging/media/starfive/camss/stf-video.h
@@ -0,0 +1,100 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * stf_video.h
+ *
+ * StarFive Camera Subsystem - V4L2 device node
+ *
+ * Copyright (C) 2021-2023 StarFive Technology Co., Ltd.
+ */
+
+#ifndef STF_VIDEO_H
+#define STF_VIDEO_H
+
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-dev.h>
+#include <media/v4l2-fh.h>
+#include <media/v4l2-ioctl.h>
+#include <media/videobuf2-v4l2.h>
+
+#define STFCAMSS_FRAME_MIN_WIDTH		64
+#define STFCAMSS_FRAME_MAX_WIDTH		1920
+#define STFCAMSS_FRAME_MIN_HEIGHT		64
+#define STFCAMSS_FRAME_MAX_HEIGHT		1080
+#define STFCAMSS_FRAME_WIDTH_ALIGN_8		8
+#define STFCAMSS_FRAME_WIDTH_ALIGN_128		128
+#define STFCAMSS_MIN_BUFFERS			2
+
+#define STFCAMSS_MAX_ENTITY_NAME_LEN		27
+
+enum stf_v_line_id {
+	STF_V_LINE_WR = 0,
+	STF_V_LINE_ISP,
+	STF_V_LINE_MAX,
+};
+
+enum stf_capture_type {
+	STF_CAPTURE_RAW = 0,
+	STF_CAPTURE_YUV,
+	STF_CAPTURE_NUM,
+};
+
+struct stfcamss_buffer {
+	struct vb2_v4l2_buffer vb;
+	dma_addr_t addr[2];
+	struct list_head queue;
+};
+
+struct fract {
+	u8 numerator;
+	u8 denominator;
+};
+
+/*
+ * struct stfcamss_format_info - ISP media bus format information
+ * @code: V4L2 media bus format code
+ * @pixelformat: V4L2 pixel format FCC identifier
+ * @planes: Number of planes
+ * @vsub: Vertical subsampling (for each plane)
+ * @bpp: Bits per pixel when stored in memory (for each plane)
+ */
+struct stfcamss_format_info {
+	u32 code;
+	u32 pixelformat;
+	u8 planes;
+	u8 vsub[3];
+	u8 bpp;
+};
+
+struct stfcamss_video {
+	struct stfcamss *stfcamss;
+	struct vb2_queue vb2_q;
+	struct video_device vdev;
+	struct media_pad pad;
+	struct v4l2_format active_fmt;
+	enum v4l2_buf_type type;
+	const struct stfcamss_video_ops *ops;
+	struct mutex lock;	 /* serialize device access */
+	struct mutex q_lock;	 /* protects the queue */
+	unsigned int bpl_alignment;
+	const struct stfcamss_format_info *formats;
+	unsigned int nformats;
+	struct v4l2_subdev *source_subdev;
+};
+
+struct stfcamss_video_ops {
+	int (*queue_buffer)(struct stfcamss_video *video,
+			    struct stfcamss_buffer *buf);
+	int (*flush_buffers)(struct stfcamss_video *video,
+			     enum vb2_buffer_state state);
+	void (*start_streaming)(struct stfcamss_video *video);
+	void (*stop_streaming)(struct stfcamss_video *video);
+};
+
+int stf_video_register(struct stfcamss_video *video,
+		       struct v4l2_device *v4l2_dev, const char *name);
+
+void stf_video_unregister(struct stfcamss_video *video);
+
+#endif /* STF_VIDEO_H */
diff --git a/drivers/staging/media/sunxi/cedrus/Kconfig b/drivers/staging/media/sunxi/cedrus/Kconfig
index 621944f9907a6..cb07a343c9c27 100644
--- a/drivers/staging/media/sunxi/cedrus/Kconfig
+++ b/drivers/staging/media/sunxi/cedrus/Kconfig
@@ -6,7 +6,6 @@ config VIDEO_SUNXI_CEDRUS
 	depends on HAS_DMA
 	depends on OF
 	select MEDIA_CONTROLLER
-	select MEDIA_CONTROLLER_REQUEST_API
 	select SUNXI_SRAM
 	select VIDEOBUF2_DMA_CONTIG
 	select V4L2_MEM2MEM_DEV
diff --git a/drivers/staging/media/sunxi/cedrus/TODO b/drivers/staging/media/sunxi/cedrus/TODO
index ec277ece47afd..00aa304a7e369 100644
--- a/drivers/staging/media/sunxi/cedrus/TODO
+++ b/drivers/staging/media/sunxi/cedrus/TODO
@@ -1,7 +1,16 @@
-Before this stateless decoder driver can leave the staging area:
-* The Request API needs to be stabilized;
-* The codec-specific controls need to be thoroughly reviewed to ensure they
-  cover all intended uses cases;
-* Userspace support for the Request API needs to be reviewed;
-* Another stateless decoder driver should be submitted;
-* At least one stateless encoder driver should be submitted.
+This driver suffers from a bad initial design that results in various aspects
+being intricated, making it difficult to scale to new codecs and to add encoding
+support in the future.
+
+Before leaving the staging area, it should be reworked to clearly distinguish
+between different aspects:
+- platform, with resources management, interrupt handler, watchdog,
+  v4l2 and m2m devices registration;
+- proc, with video device registration and related operations;
+- context, with m2m context, queue and controls management;
+- engine, with each individual codec job execution and codec-specific
+  operation callbacks;
+
+This will make it possible to register two different procs (decoder and
+encoder) while sharing significant common infrastructure, common v4l2 and m2m
+devices but exposing distinct video devices.
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
index dfb401df138a9..3e2843ef6ccec 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
@@ -653,8 +653,13 @@ static void cedrus_h264_stop(struct cedrus_ctx *ctx)
 
 	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 
-	for (i = 0; i < vq->num_buffers; i++) {
-		buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
+	for (i = 0; i < vb2_get_num_buffers(vq); i++) {
+		struct vb2_buffer *vb = vb2_get_buffer(vq, i);
+
+		if (!vb)
+			continue;
+
+		buf = vb2_to_cedrus_buffer(vb);
 
 		if (buf->codec.h264.mv_col_buf_size > 0) {
 			dma_free_attrs(dev->dev,
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
index fc9297232456f..52e94c8f2f01a 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
@@ -869,8 +869,13 @@ static void cedrus_h265_stop(struct cedrus_ctx *ctx)
 
 	vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
 
-	for (i = 0; i < vq->num_buffers; i++) {
-		buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
+	for (i = 0; i < vb2_get_num_buffers(vq); i++) {
+		struct vb2_buffer *vb = vb2_get_buffer(vq, i);
+
+		if (!vb)
+			continue;
+
+		buf = vb2_to_cedrus_buffer(vb);
 
 		if (buf->codec.h265.mv_col_buf_size > 0) {
 			dma_free_attrs(dev->dev,
diff --git a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c
index 1595a9607775b..0eea4c2c36271 100644
--- a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c
+++ b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_capture.c
@@ -660,7 +660,7 @@ int sun6i_isp_capture_setup(struct sun6i_isp_device *isp_dev)
 	queue->buf_struct_size = sizeof(struct sun6i_isp_buffer);
 	queue->ops = &sun6i_isp_capture_queue_ops;
 	queue->mem_ops = &vb2_dma_contig_memops;
-	queue->min_buffers_needed = 2;
+	queue->min_queued_buffers = 2;
 	queue->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 	queue->lock = &capture->lock;
 	queue->dev = isp_dev->dev;
diff --git a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_params.c b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_params.c
index e28be895b4861..53d05e8a364bb 100644
--- a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_params.c
+++ b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_params.c
@@ -489,7 +489,7 @@ int sun6i_isp_params_setup(struct sun6i_isp_device *isp_dev)
 	queue->buf_struct_size = sizeof(struct sun6i_isp_buffer);
 	queue->ops = &sun6i_isp_params_queue_ops;
 	queue->mem_ops = &vb2_vmalloc_memops;
-	queue->min_buffers_needed = 1;
+	queue->min_queued_buffers = 1;
 	queue->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
 	queue->lock = &params->lock;
 	queue->dev = isp_dev->dev;
diff --git a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_proc.c b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_proc.c
index ccbb530aa2e23..46a334b602f19 100644
--- a/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_proc.c
+++ b/drivers/staging/media/sunxi/sun6i-isp/sun6i_isp_proc.c
@@ -256,13 +256,13 @@ sun6i_isp_proc_mbus_format_prepare(struct v4l2_mbus_framefmt *mbus_format)
 	mbus_format->xfer_func = V4L2_XFER_FUNC_DEFAULT;
 }
 
-static int sun6i_isp_proc_init_cfg(struct v4l2_subdev *subdev,
-				   struct v4l2_subdev_state *state)
+static int sun6i_isp_proc_init_state(struct v4l2_subdev *subdev,
+				     struct v4l2_subdev_state *state)
 {
 	struct sun6i_isp_device *isp_dev = v4l2_get_subdevdata(subdev);
 	unsigned int pad = SUN6I_ISP_PROC_PAD_SINK_CSI;
 	struct v4l2_mbus_framefmt *mbus_format =
-		v4l2_subdev_get_try_format(subdev, state, pad);
+		v4l2_subdev_state_get_format(state, pad);
 	struct mutex *lock = &isp_dev->proc.lock;
 
 	mutex_lock(lock);
@@ -302,8 +302,8 @@ static int sun6i_isp_proc_get_fmt(struct v4l2_subdev *subdev,
 	mutex_lock(lock);
 
 	if (format->which == V4L2_SUBDEV_FORMAT_TRY)
-		*mbus_format = *v4l2_subdev_get_try_format(subdev, state,
-							   format->pad);
+		*mbus_format = *v4l2_subdev_state_get_format(state,
+							     format->pad);
 	else
 		*mbus_format = isp_dev->proc.mbus_format;
 
@@ -325,7 +325,7 @@ static int sun6i_isp_proc_set_fmt(struct v4l2_subdev *subdev,
 	sun6i_isp_proc_mbus_format_prepare(mbus_format);
 
 	if (format->which == V4L2_SUBDEV_FORMAT_TRY)
-		*v4l2_subdev_get_try_format(subdev, state, format->pad) =
+		*v4l2_subdev_state_get_format(state, format->pad) =
 			*mbus_format;
 	else
 		isp_dev->proc.mbus_format = *mbus_format;
@@ -336,7 +336,6 @@ static int sun6i_isp_proc_set_fmt(struct v4l2_subdev *subdev,
 }
 
 static const struct v4l2_subdev_pad_ops sun6i_isp_proc_pad_ops = {
-	.init_cfg	= sun6i_isp_proc_init_cfg,
 	.enum_mbus_code	= sun6i_isp_proc_enum_mbus_code,
 	.get_fmt	= sun6i_isp_proc_get_fmt,
 	.set_fmt	= sun6i_isp_proc_set_fmt,
@@ -347,6 +346,10 @@ static const struct v4l2_subdev_ops sun6i_isp_proc_subdev_ops = {
 	.pad	= &sun6i_isp_proc_pad_ops,
 };
 
+static const struct v4l2_subdev_internal_ops sun6i_isp_proc_internal_ops = {
+	.init_state = sun6i_isp_proc_init_state,
+};
+
 /* Media Entity */
 
 static const struct media_entity_operations sun6i_isp_proc_entity_ops = {
@@ -501,6 +504,7 @@ int sun6i_isp_proc_setup(struct sun6i_isp_device *isp_dev)
 	/* V4L2 Subdev */
 
 	v4l2_subdev_init(subdev, &sun6i_isp_proc_subdev_ops);
+	subdev->internal_ops = &sun6i_isp_proc_internal_ops;
 	strscpy(subdev->name, SUN6I_ISP_PROC_NAME, sizeof(subdev->name));
 	subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
 	subdev->owner = THIS_MODULE;
diff --git a/drivers/staging/media/tegra-video/csi.c b/drivers/staging/media/tegra-video/csi.c
index 9aa72863c213e..255cccd0c5fda 100644
--- a/drivers/staging/media/tegra-video/csi.c
+++ b/drivers/staging/media/tegra-video/csi.c
@@ -222,14 +222,22 @@ static int csi_set_format(struct v4l2_subdev *subdev,
 /*
  * V4L2 Subdevice Video Operations
  */
-static int tegra_csi_g_frame_interval(struct v4l2_subdev *subdev,
-				      struct v4l2_subdev_frame_interval *vfi)
+static int tegra_csi_get_frame_interval(struct v4l2_subdev *subdev,
+					struct v4l2_subdev_state *sd_state,
+					struct v4l2_subdev_frame_interval *vfi)
 {
 	struct tegra_csi_channel *csi_chan = to_csi_chan(subdev);
 
 	if (!IS_ENABLED(CONFIG_VIDEO_TEGRA_TPG))
 		return -ENOIOCTLCMD;
 
+	/*
+	 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
+	 * subdev active state API.
+	 */
+	if (vfi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
+		return -EINVAL;
+
 	vfi->interval.numerator = 1;
 	vfi->interval.denominator = csi_chan->framerate;
 
@@ -430,8 +438,6 @@ static int tegra_csi_s_stream(struct v4l2_subdev *subdev, int enable)
  */
 static const struct v4l2_subdev_video_ops tegra_csi_video_ops = {
 	.s_stream = tegra_csi_s_stream,
-	.g_frame_interval = tegra_csi_g_frame_interval,
-	.s_frame_interval = tegra_csi_g_frame_interval,
 };
 
 static const struct v4l2_subdev_pad_ops tegra_csi_pad_ops = {
@@ -440,6 +446,8 @@ static const struct v4l2_subdev_pad_ops tegra_csi_pad_ops = {
 	.enum_frame_interval	= csi_enum_frameintervals,
 	.get_fmt		= csi_get_format,
 	.set_fmt		= csi_set_format,
+	.get_frame_interval	= tegra_csi_get_frame_interval,
+	.set_frame_interval	= tegra_csi_get_frame_interval,
 };
 
 static const struct v4l2_subdev_ops tegra_csi_ops = {
@@ -818,15 +826,13 @@ rpm_disable:
 	return ret;
 }
 
-static int tegra_csi_remove(struct platform_device *pdev)
+static void tegra_csi_remove(struct platform_device *pdev)
 {
 	struct tegra_csi *csi = platform_get_drvdata(pdev);
 
 	host1x_client_unregister(&csi->client);
 
 	pm_runtime_disable(&pdev->dev);
-
-	return 0;
 }
 
 #if defined(CONFIG_ARCH_TEGRA_210_SOC)
@@ -852,5 +858,5 @@ struct platform_driver tegra_csi_driver = {
 		.pm		= &tegra_csi_pm_ops,
 	},
 	.probe			= tegra_csi_probe,
-	.remove			= tegra_csi_remove,
+	.remove_new		= tegra_csi_remove,
 };
diff --git a/drivers/staging/media/tegra-video/vi.c b/drivers/staging/media/tegra-video/vi.c
index 94171e62dee9e..af6e3a0d8df4f 100644
--- a/drivers/staging/media/tegra-video/vi.c
+++ b/drivers/staging/media/tegra-video/vi.c
@@ -439,6 +439,7 @@ static int __tegra_channel_try_format(struct tegra_vi_channel *chan,
 		.which = V4L2_SUBDEV_FORMAT_ACTIVE,
 		.target = V4L2_SEL_TGT_CROP_BOUNDS,
 	};
+	struct v4l2_rect *try_crop;
 	int ret;
 
 	subdev = tegra_channel_get_remote_source_subdev(chan);
@@ -473,24 +474,25 @@ static int __tegra_channel_try_format(struct tegra_vi_channel *chan,
 	 * Attempt to obtain the format size from subdev.
 	 * If not available, try to get crop boundary from subdev.
 	 */
+	try_crop = v4l2_subdev_state_get_crop(sd_state, 0);
 	fse.code = fmtinfo->code;
 	ret = v4l2_subdev_call(subdev, pad, enum_frame_size, sd_state, &fse);
 	if (ret) {
 		if (!v4l2_subdev_has_op(subdev, pad, get_selection)) {
-			sd_state->pads->try_crop.width = 0;
-			sd_state->pads->try_crop.height = 0;
+			try_crop->width = 0;
+			try_crop->height = 0;
 		} else {
 			ret = v4l2_subdev_call(subdev, pad, get_selection,
 					       NULL, &sdsel);
 			if (ret)
 				return -EINVAL;
 
-			sd_state->pads->try_crop.width = sdsel.r.width;
-			sd_state->pads->try_crop.height = sdsel.r.height;
+			try_crop->width = sdsel.r.width;
+			try_crop->height = sdsel.r.height;
 		}
 	} else {
-		sd_state->pads->try_crop.width = fse.max_width;
-		sd_state->pads->try_crop.height = fse.max_height;
+		try_crop->width = fse.max_width;
+		try_crop->height = fse.max_height;
 	}
 
 	ret = v4l2_subdev_call(subdev, pad, set_fmt, sd_state, &fmt);
@@ -1172,7 +1174,7 @@ static int tegra_channel_init(struct tegra_vi_channel *chan)
 	chan->queue.ops = &tegra_channel_queue_qops;
 	chan->queue.mem_ops = &vb2_dma_contig_memops;
 	chan->queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
-	chan->queue.min_buffers_needed = 2;
+	chan->queue.min_queued_buffers = 2;
 	chan->queue.dev = vi->dev;
 	ret = vb2_queue_init(&chan->queue);
 	if (ret < 0) {
@@ -1944,7 +1946,7 @@ rpm_disable:
 	return ret;
 }
 
-static int tegra_vi_remove(struct platform_device *pdev)
+static void tegra_vi_remove(struct platform_device *pdev)
 {
 	struct tegra_vi *vi = platform_get_drvdata(pdev);
 
@@ -1953,8 +1955,6 @@ static int tegra_vi_remove(struct platform_device *pdev)
 	if (vi->ops->vi_enable)
 		vi->ops->vi_enable(vi, false);
 	pm_runtime_disable(&pdev->dev);
-
-	return 0;
 }
 
 static const struct of_device_id tegra_vi_of_id_table[] = {
@@ -1979,5 +1979,5 @@ struct platform_driver tegra_vi_driver = {
 		.pm = &tegra_vi_pm_ops,
 	},
 	.probe = tegra_vi_probe,
-	.remove = tegra_vi_remove,
+	.remove_new = tegra_vi_remove,
 };
diff --git a/drivers/staging/media/tegra-video/vip.c b/drivers/staging/media/tegra-video/vip.c
index e95cc7bb190e1..8504b9ea9cea2 100644
--- a/drivers/staging/media/tegra-video/vip.c
+++ b/drivers/staging/media/tegra-video/vip.c
@@ -254,15 +254,13 @@ static int tegra_vip_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static int tegra_vip_remove(struct platform_device *pdev)
+static void tegra_vip_remove(struct platform_device *pdev)
 {
 	struct tegra_vip *vip = platform_get_drvdata(pdev);
 
 	host1x_client_unregister(&vip->client);
 
 	pm_runtime_disable(&pdev->dev);
-
-	return 0;
 }
 
 #if defined(CONFIG_ARCH_TEGRA_2x_SOC)
@@ -283,5 +281,5 @@ struct platform_driver tegra_vip_driver = {
 		.of_match_table	= tegra_vip_of_id_table,
 	},
 	.probe			= tegra_vip_probe,
-	.remove			= tegra_vip_remove,
+	.remove_new		= tegra_vip_remove,
 };