[alsa-devel] [RFC PATCH] ASoC: wm8741: Add differential mono mode support

[Mark Brown]

On Tue, May 05, 2015 at 02:19:38PM +0200, Sergej Sawazki wrote:

> The mono mode of the device should not be confused
> with the ALSA mono mode. If the device is in mono mode
> it either plays the left (mono left mode) or the right (mono
> right mode) channel.

> My board has two of this DACs (left and right channel). 
> The control names should be different, hence my
> suggestion for the "Left" and "Right" prefixes.

That's fine and totally normal.

> Another approach would be to say that the machine
> driver is responsible for mixer controls if the devices
> are in mono mode. What do you think?

Yes, the machine driver should do this - you may have left and right on
your board but these configurations are for example often used with 5.1
systems.
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