diff options
| author | Shuah Khan <shuah.kh@samsung.com> | 2014-02-22 01:50:14 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-03-03 10:46:07 +0100 |
| commit | 6d746f91f23098c7613938b85e9b345d53b6de3f (patch) | |
| tree | acbfe736b71b8d637f5673f7647d26d6115a87ff /drivers/media/usb | |
| parent | [media] em28xx: add suspend/resume to em28xx_ops (diff) | |
| download | linux-6d746f91f23098c7613938b85e9b345d53b6de3f.tar.xz linux-6d746f91f23098c7613938b85e9b345d53b6de3f.zip | |
[media] em28xx-audio: 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>
Diffstat (limited to 'drivers/media/usb')
| -rw-r--r-- | drivers/media/usb/em28xx/em28xx-audio.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-audio.c b/drivers/media/usb/em28xx/em28xx-audio.c index 566fa096eaf8..0f5b6f3e7a3f 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) |