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

Mark Brown broonie at sirena.org.uk
Sun Apr 26 13:21:37 CEST 2009

On Sun, Apr 26, 2009 at 01:08:22PM +0200, Takashi Iwai wrote:

> OTOH, "* Capture Switch" is handled as "capture" switch, which is
> indicated as "CAPTURE" (and "L" & "R") in the above.  Also, if the

Right; however the effect of a capture switch is pretty much equivalent
to mute for a playback control.

> The keys you mentioned above are all for playback mute controls, thus
> irrelevant with the capture switch.  User space key to toggle the
> capture switch.

That doesn't quite answer Timur's question - the question was more why
capture switches are being presented to the user as mono controls even
when the two channels can be switched independantly.

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