[alsa-devel] ASoC mixer control names v.s. well-known "Master"

Mark,

In ChromeOS, user-space attempts to manipulate controls with "well known names" to control e.g. output volume. The names it uses are probably based on Documentation/sound/alsa/ControlNames.txt, since the code was originally written for x86 platforms that use those names.

Is that document relevant to ASoC, up-to-date, and binding on audio drivers, or more of a de-facto FYI?

Those names don't exist for Tegra, or rather the WM8903, and I imagine for any ASoC drivers. I had imagined this could be fixed by creating virtual mixer controls in asound.conf that re-direct requests to that real control. Is that how things typically work? Or, should the ASoC machine driver create controls with those names?

Thanks.