[alsa-devel] [PATCH] ASoC: Add MICBIAS routing information for WM8904

[Mark Brown]

On Fri, Mar 16, 2012 at 04:54:58PM +0800, Hong Xu wrote:

>  static const struct snd_soc_dapm_route adc_intercon[] = {
> +	{ "MICBIAS", NULL, "IN1L" },
> +	{ "MICBIAS", NULL, "IN1R" },
> +
> +	{ "Left Capture Mux", NULL, "MICBIAS" },
> +	{ "Right Capture Mux", NULL, "MICBIAS" },
> +	{ "Left Capture Inverting Mux", NULL, "MICBIAS" },
> +	{ "Right Capture Inverting Mux", NULL, "MICBIAS" },
> +

No, this is not something that the CODEC driver should do - the machine
driver should add connections for MICBIAS as this is something that's
determined by the board design.  The board could for example use some or
all of the inputs as simple line inputs (no bias needed), or it could
use an external MICBIAS for some reason.
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