[alsa-devel] [PATCH] tlv320aic3x: control additions and cleanups

Jarkko Nikula jhnikula at gmail.com
Fri Dec 5 14:21:39 CET 2008

On Fri, Dec 5, 2008 at 3:00 PM, Mark Brown <broonie at sirena.org.uk> wrote:

> On Fri, Dec 05, 2008 at 02:45:04PM +0200, Jarkko Nikula wrote:
> > On Thu, Dec 4, 2008 at 8:37 PM, Mark Brown <broonie at sirena.org.uk>
> wrote:
> > > I can't help thinking that it'd be easier to just use "Left Line" and
> > > "Right Line" but that's an existing issue in the driver.
> > Yeah, same thoughts. Started to look only now, but what's the idea to
> > separate stereo control into two mono control in commit
> > 54f01916297bafc18bd7df4e2300a0544a84fce3? Change like
> Several codecs do this - systems often end up doing things like using
> the line inputs as unrelated mono paths rather than as a stereo path.
> How likely that is to happen with this codec I don't know.

Or did I read the idea of patch wrong? Before there were stereo contol for


and now


PGAR seems to be missing?

-       SOC_DOUBLE_R("HP PGA Bypass Playback Volume", PGAL_2_HPLOUT_VOL,
-                    PGAR_2_HPROUT_VOL, 0, 0x7f, 1),
+       SOC_SINGLE("HPL PGA Bypass Playback Volume", PGAL_2_HPLOUT_VOL,
+                    0, 0x7f, 1),
+       SOC_SINGLE("HPR PGA Bypass Playback Volume", PGAL_2_HPROUT_VOL,
+                    0, 0x7f, 1),

Codec itself can route all Line2[L | R], PGA [L | R], DAC [L | R] into all
seven output stages. Which are Mono, Line [L |R] and HP [H |L] with HP
having own volumes for HP positive and negative.


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