[alsa-devel] [PATCH 2/3] ASoC: cs4270: add Master Playback Switch

[Mark Brown]

On Fri, Apr 24, 2009 at 03:52:16PM +0200, Daniel Mack wrote:

> I'll send a new patch for that, providing this feature in a slightly
> more complex fashion. However, I don't want to remove the other
> function. If the soc core decides to mute the codec, it should be able
> to do so.

It's not the core that needs it, it's the DAC that normally needs the
core to mute it (modulo random floating signals that it might parse) -
if cs4270 is happy without the mute then the core doesn't care if it's
not there.