[alsa-devel] [PATCH] ASoC: sgtl5000: Enable VAG when DAC/ADC up

[Richard Zhao]

Hi Mark,

On Thu, Mar 29, 2012 at 10:10 PM, Mark Brown
<broonie at opensource.wolfsonmicro.com> wrote:
> On Thu, Mar 29, 2012 at 10:04:23PM +0800, Shawn Guo wrote:
>> On Thu, Mar 29, 2012 at 11:58:32AM +0100, Mark Brown wrote:
>
>> > No, the bias should be a supply for the microphone - ensuring that this
>> > happens is the whole point of the patch I sent the other day.
>
>> The "MIC" above is confusing.  I guess the following that I have in
>> machine driver might be a little clearer.
>
>>         {"Mic Bias", NULL, "Mic Jack"},
>>         {"MIC_IN", NULL, "Mic Bias"},
>
> This should be something like:
>
>        { "Mic Jack", NULL, "Mic Bias" },
>        { "MIC_IN", NULL, "Mic Bias" },
"MiC Bias" --> "Mic Jack" should be enough.
Why do we have "Mic Bias" --> "MIC_IN" ?

Thanks
Richard
>
> (with the conversion of Mic Bias to a supply widget) which has the bonus
> of being a whole lot easier to understand.
>
>> And I need to present it in device tree though.
>
> Use the generic stuff that Stephen put into the core for reading machine
> driver routing maps out of the device tree (unless there's some problem
> with it, but it should work).
>
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