[alsa-devel] [PATCH] ASoC: Convert WM8903 MICBIAS to a supply widget

[Mark Brown]

On Mon, Nov 28, 2011 at 05:00:29PM +0000, Mark Brown wrote:
> On Mon, Nov 28, 2011 at 08:58:32AM -0800, Stephen Warren wrote:
> > Mark Brown wrote at Sunday, November 27, 2011 5:22 AM:

> > > -SND_SOC_DAPM_MICBIAS("Mic Bias", WM8903_MIC_BIAS_CONTROL_0, 0, 0),
> > > +SND_SOC_DAPM_SUPPLY("MICBIAS", WM8903_MIC_BIAS_CONTROL_0, 0, 0, NULL, 0),

> > For my education, why is this better modeled as a supply instead of a
> > mic bias? Thanks.

> The wiring in the DAPM map is *much* more comprehensible.

Oh, and the other thing is that it means that your device tree wiring
doesn't need to do any Linux-specific stuff to do with the funny way
the widgets needed to be wired up or jump through hoops otherwise and
can just talk about the pin being connected.