From: Shuah Khan <shuah.kh@samsung.com>
To: m.chehab@samsung.com
Cc: Shuah Khan <shuah.kh@samsung.com>,
linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
shuahkhan@gmail.com
Subject: [RFC] [PATCH 2/6] media: em28xx-audio - implement em28xx_ops: suspend/resume hooks
Date: Fri, 21 Feb 2014 17:50:14 -0700 [thread overview]
Message-ID: <38a429856e5ef8a93a4e2b29066f3f36cceeec8a.1393027856.git.shuah.kh@samsung.com> (raw)
In-Reply-To: <cover.1393027856.git.shuah.kh@samsung.com>
In-Reply-To: <cover.1393027856.git.shuah.kh@samsung.com>
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>
---
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
next prev parent reply other threads:[~2014-02-22 0:50 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-22 0:50 [RFC] [PATCH 0/6] media: em28xx - power management support em28xx Shuah Khan
2014-02-22 0:50 ` [RFC] [PATCH 1/6] media: em28xx - add suspend/resume to em28xx_ops Shuah Khan
2014-02-22 0:50 ` Shuah Khan [this message]
2014-02-22 0:50 ` [RFC] [PATCH 3/6] media: em28xx-dvb - implement em28xx_ops: suspend/resume hooks Shuah Khan
2014-02-22 0:50 ` [RFC] [PATCH 4/6] media: em28xx-input " Shuah Khan
2014-03-01 13:48 ` Mauro Carvalho Chehab
2014-03-03 9:45 ` Mauro Carvalho Chehab
2014-02-22 0:50 ` [RFC] [PATCH 5/6] media: em28xx-video " Shuah Khan
2014-02-22 0:50 ` [RFC] [PATCH 6/6] media: em28xx - implement em28xx_usb_driver suspend, resume, reset_resume hooks Shuah Khan
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