[alsa-devel] [PATCH 1/3] ASoC: cs4270: fix Master Capture Switch polarity

[Takashi Iwai]

At Sun, 26 Apr 2009 13:30:48 +0200,
Daniel Mack wrote:
> 
> On Sun, Apr 26, 2009 at 01:08:22PM +0200, Takashi Iwai wrote:
> > > Capture is enabled in the picture above; often when the alsamixer UI is
> > > confusing amixer is a bit clearer about what's going on.
> > 
> > The "mute" is only for "* Playback Switch" mixer controls.  In this case,
> > if you have "Master Playback Switch", it's handled as the mute switch
> > in the mixer interface.  If you don't have such a control element,
> > there is no "mute" for "Master" mixer element.
> 
> So but what about the polarity then? 'Master Playback Switch' == 'on'
> means _not_ muted, right?

Right.  The switch on = the sound comes out.


Takashi