[alsa-devel] [PATCH 02/12] ASoC: dapm: Implement stereo mixer control support

[Chen-Yu Tsai]

On Thu, Oct 27, 2016 at 12:57 AM, Mark Brown <broonie at kernel.org> wrote:
> On Mon, Oct 03, 2016 at 07:07:54PM +0800, Chen-Yu Tsai wrote:
>
>> While DAPM is mono or single channel, its controls can be shared between
>> widgets, such as sharing one stereo mixer control between the left and
>> right channel widgets.
>
>> This patch introduces support for such shared mixer controls.
>
> Based on this changelog I'm really not sure what the intended semantic
> of this change is which makes it difficult to review.  What are you
> expecting these controls to look like and how are you expecting them to
> work?
>
>> -static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i)
>> +static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i,
>> +                                    int nth_path)
>
> It looks like the goal is to attach more than one path to a single
> control somehow?

Correct. I'll try to expand the commit log and add an example diagram.

ChenYu