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

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>

diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c
index 2775c9062c0adb8ff3d6520ed8a209451352815f..19af6b3e9e2b85efcd87dfde6a4f7df40c79f760 100644 (file)
--- a/drivers/media/usb/em28xx/em28xx-video.c
+++ b/drivers/media/usb/em28xx/em28xx-video.c
@@ -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)