[alsa-devel] [PATCH] ALSA: SoC: Added jack detection kcontrol support
eu at felipetonello.com
Mon Jul 22 23:11:44 CEST 2013
On Sun, Jul 21, 2013 at 5:01 PM, Mark Brown <broonie at kernel.org> wrote:
> On Fri, Jul 19, 2013 at 05:59:22PM -0700, Felipe F. Tonello wrote:
>> From: "Felipe F. Tonello" <ftonello at cercacor.com>
>> It adds soc jack support for alsa kcontrol.
>> This support is necessary since the new kcontrol is used by user-space
>> daemons, such as PulseAudio(>=2.0), to do jack detection.
>> Signed-off-by: Felipe F. Tonello <ftonello at cercacor.com>
>> include/sound/soc.h | 1 +
>> sound/soc/Kconfig | 1 +
>> sound/soc/soc-jack.c | 22 ++++++++++++++++++++++
>> 3 files changed, 24 insertions(+)
> No, this makes no sense at all as an ASoC specific feature - it should
> be a standard feature of ALSA jacks. The whole point of having ALSA
> core infrastructure for jacks is to avoid having to go round doing make
> work stuff like this.
I agree. I added as a ASoC feature because I followed the example of
My question is: Why ALSA Jack support uses evdev input events to
notify user-space? Is there any user-space relying on that? If no, I
would like to change ALSA Jack implementation to only use KControl and
remove specific implementations.
At least the only daemon that I know that supports jack detection,
which is PulseAudio, uses this new ALSA KControl for Jacks.
More information about the Alsa-devel