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-audio.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/drivers/media/usb/em28xx/em28xx-audio.c b/drivers/media/usb/em28xx/em28xx-audio.c
index 05e9bd1..a4d159d 100644
--- a/drivers/media/usb/em28xx/em28xx-audio.c
+++ b/drivers/media/usb/em28xx/em28xx-audio.c
@@ -989,11 +989,41 @@ static int em28xx_audio_fini(struct em28xx *dev)
return 0;
}
+static int em28xx_audio_suspend(struct em28xx *dev)
+{
+ if (dev == NULL)
+ return 0;
+
+ if (!dev->has_alsa_audio)
+ return 0;
+
+ em28xx_info("Suspending audio extension");
+ em28xx_deinit_isoc_audio(dev);
+ atomic_set(&dev->stream_started, 0);
+ return 0;
+}
+
+static int em28xx_audio_resume(struct em28xx *dev)
+{
+ if (dev == NULL)
+ return 0;
+
+ if (!dev->has_alsa_audio)
+ return 0;
+
+ em28xx_info("Resuming audio extension");
+ /* Nothing to do other than schedule_work() ?? */
+ schedule_work(&dev->wq_trigger);
+ return 0;
+}
+
static struct em28xx_ops audio_ops = {
.id = EM28XX_AUDIO,
.name = "Em28xx Audio Extension",
.init = em28xx_audio_init,
.fini = em28xx_audio_fini,
+ .suspend = em28xx_audio_suspend,
+ .resume = em28xx_audio_resume,
};
static int __init em28xx_alsa_register(void)
--
1.8.3.2
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