diff options
| author | Kai-Heng Feng <kai.heng.feng@canonical.com> | 2018-11-05 16:45:03 +0800 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2018-12-17 08:26:24 +0100 |
| commit | 883a87ddf2f118fbce617b1b3472b8224803eb14 (patch) | |
| tree | 93fe851c8278635aca78949ea32d0bc99ad88d73 /drivers/misc/cardreader | |
| parent | 01a7e8e066a505933b43a8df6da1ae1a1e7bddf2 (diff) | |
| download | linux-883a87ddf2f118fbce617b1b3472b8224803eb14.tar.gz | |
misc: rtsx_usb: Use USB remote wakeup signaling for card insertion detection
Although rtsx_usb doesn't support card removal detection, card insertion
will resume rtsx_usb by USB remote wakeup signaling.
When rtsx_usb gets resumed, also resumes its child devices,
rtsx_usb_sdmmc and rtsx_usb_ms, to notify them there's a card in its
slot.
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/misc/cardreader')
| -rw-r--r-- | drivers/misc/cardreader/rtsx_usb.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/misc/cardreader/rtsx_usb.c b/drivers/misc/cardreader/rtsx_usb.c index b97903ff1a721..f7a66f6140855 100644 --- a/drivers/misc/cardreader/rtsx_usb.c +++ b/drivers/misc/cardreader/rtsx_usb.c @@ -723,8 +723,15 @@ static int rtsx_usb_suspend(struct usb_interface *intf, pm_message_t message) return 0; } +static int rtsx_usb_resume_child(struct device *dev, void *data) +{ + pm_request_resume(dev); + return 0; +} + static int rtsx_usb_resume(struct usb_interface *intf) { + device_for_each_child(&intf->dev, NULL, rtsx_usb_resume_child); return 0; } @@ -734,6 +741,7 @@ static int rtsx_usb_reset_resume(struct usb_interface *intf) (struct rtsx_ucr *)usb_get_intfdata(intf); rtsx_usb_reset_chip(ucr); + device_for_each_child(&intf->dev, NULL, rtsx_usb_resume_child); return 0; } |