Re: [alsa-devel] [PATCH] ASoC: tlv320aic3x: Add virtual output pin Detection

On Fri, 2010-09-17 at 14:00 +0100, Mark Brown wrote:

On Fri, Sep 17, 2010 at 02:39:01PM +0300, Jarkko Nikula wrote:

...

Purpose of this virtual Detection pin is to keep codec bias on whenever the GPIO or jack detection features are needed.

Jack detection needs a mic bias so machine drivers can construct a following route for instance for keeping the path and codec bias on:

...

"Input Jack" -> "Mic Bias xV" -> "Detection" -> detection block inside codec.

...

For the GPIO the machine driver can force the pin on with snd_soc_dapm_force_enable_pin.

...

Signed-off-by: Jarkko Nikula jhnikula@gmail.com

Acked-by: Mark Brown broonie@opensource.wolfsonmicro.com

Applied.

Thanks

Liam