[alsa-devel] [PATCH 1/3] ASoC: cs4270: fix Master Capture Switch polarity
broonie at sirena.org.uk
Sun Apr 26 11:49:17 CEST 2009
On Fri, Apr 24, 2009 at 10:45:29AM -0500, Timur Tabi wrote:
> Daniel Mack wrote:
> > The control modifies the MUTE register, hence the polarity must be
> > inverted.
> L R
> < Master >
> What exactly does this mean? Which one is supposed to mean "muted"?
Capture is enabled in the picture above; often when the alsamixer UI is
confusing amixer is a bit clearer about what's going on.
> And how come even though this switch is a SOC_DOUBLE, I cannot control
> the left and right channel independently with the < and > keys, and the
> "M" key doesn't toggle it either.
This is a property of capture controls. I'm not entirely sure why,
CCing in Takashi who should be able to offer more knowledgable comment.
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