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authorShuah Khan <shuahkh@osg.samsung.com>2016-03-02 13:50:31 -0300
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2016-03-03 15:01:13 -0300
commitaebb2b89bff0fdeb4e7ddd73dcbccde1a0f27554 (patch)
treeaad7f1862beb01250032ac02d46d1dac11ccaa18 /sound/usb/Kconfig
parent6ede20f9683c55dac8281b63d80b5cc669640252 (diff)
downloadlinux-aebb2b89bff0fdeb4e7ddd73dcbccde1a0f27554.tar.gz
[media] sound/usb: Use Media Controller API to share media resources
Change ALSA driver to use Media Controller API to share media resources
with DVB and V4L2 drivers on a AU0828 media device. Media Controller
specific initialization is done after sound card is registered. ALSA
creates Media interface and entity function graph nodes for Control,
Mixer, PCM Playback, and PCM Capture devices.

snd_usb_hw_params() will call Media Controller enable source handler
interface to request the media resource. If resource request is
granted, it will release it from snd_usb_hw_free(). If resource is
busy, -EBUSY is returned.

Media specific cleanup is done in usb_audio_disconnect().

Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'sound/usb/Kconfig')
-rw-r--r--sound/usb/Kconfig4
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/usb/Kconfig b/sound/usb/Kconfig
index a452ad7cec40..d14bf411515b 100644
--- a/sound/usb/Kconfig
+++ b/sound/usb/Kconfig
@@ -15,6 +15,7 @@ config SND_USB_AUDIO
 	select SND_RAWMIDI
 	select SND_PCM
 	select BITREVERSE
+	select SND_USB_AUDIO_USE_MEDIA_CONTROLLER if MEDIA_CONTROLLER && (MEDIA_SUPPORT=y || MEDIA_SUPPORT=SND_USB_AUDIO)
 	help
 	  Say Y here to include support for USB audio and USB MIDI
 	  devices.
@@ -22,6 +23,9 @@ config SND_USB_AUDIO
 	  To compile this driver as a module, choose M here: the module
 	  will be called snd-usb-audio.
 
+config SND_USB_AUDIO_USE_MEDIA_CONTROLLER
+	bool
+
 config SND_USB_UA101
 	tristate "Edirol UA-101/UA-1000 driver"
 	select SND_PCM