[alsa-devel] [PATCH 8/8] ASoC: rsnd: Add Volume Ramp support

Mark Brown broonie at kernel.org
Thu Nov 6 17:11:06 CET 2014


On Mon, Nov 03, 2014 at 04:30:00PM -0800, Kuninori Morimoto wrote:
> > > /*
> > >  * target volume for "start" is Mute.
> > >  * volume X x 0 time = volume 0
> > >  */
> > > amixer set "DVC Out Ramp" 0%		// Mute as default

> > I'm sorry, this explanation still isn't at all clear to me.  Can you
> > explain it in words please?

> Our DVC Volume Ramp is doing "Normal volume" x "Volume scale".
> "Volume scale" exchange Volume in "X db / Y step" (= speed).
> Our "Volume Ramp" exchange this "Volume scale" in "X db / Y step" speed.

> "Normal Volume" x 0 => "Normal Volume" x 1

> Does this good answer for you ?

OK, that's what I'd thought that the control should be doing based on
the naming but the examples you were showing were confusing.  Let me
take a look at the new version you posted...
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