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@xxxxxxxxxxx>
---
drivers/media/usb/em28xx/em28xx-video.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c
index c3c9289..1df6750 100644
--- 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
@@ -2504,6 +2530,8 @@ 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)
--
1.8.3.2
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