From 6d746f91f23098c7613938b85e9b345d53b6de3f Mon Sep 17 00:00:00 2001 From: Shuah Khan Date: Fri, 21 Feb 2014 21:50:14 -0300 Subject: [PATCH] [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 Signed-off-by: Mauro Carvalho Chehab --- 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 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) -- 2.30.2