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[media] em28xx-video: implement em28xx_ops: suspend/resume hooks

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Implement em28xx_ops: suspend/resume hooks. em28xx usb driver will
invoke em28xx_ops: suspend and resume hooks for all its extensions
from its suspend() and resume() interfaces.

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Shuah Khan 2014-02-21 21:50:17 -03:00 committed by Mauro Carvalho Chehab
parent 5025076aad
commit a61f68119a
1 changed files with 28 additions and 0 deletions
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28
drivers/media/usb/em28xx/em28xx-video.c
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@ -1933,6 +1933,32 @@ static int em28xx_v4l2_fini(struct em28xx *dev)
return 0;
}
static int em28xx_v4l2_suspend(struct em28xx *dev)
{
if (dev->is_audio_only)
return 0;
if (!dev->has_video)
return 0;
em28xx_info("Suspending video extension");
em28xx_stop_urbs(dev);
return 0;
}
static int em28xx_v4l2_resume(struct em28xx *dev)
{
if (dev->is_audio_only)
return 0;
if (!dev->has_video)
return 0;
em28xx_info("Resuming video extension");
/* what do we do here */
return 0;
}
/*
* em28xx_v4l2_close()
* stops streaming and deallocates all resources allocated by the v4l2
@ -2505,6 +2531,8 @@ static struct em28xx_ops v4l2_ops = {
.name = "Em28xx v4l2 Extension",
.init = em28xx_v4l2_init,
.fini = em28xx_v4l2_fini,
.suspend = em28xx_v4l2_suspend,
.resume = em28xx_v4l2_resume,
};
static int __init em28xx_video_register(void)