[alsa-devel] [PATCH] ASoC: tlv320aic3x: Add virtual output pin Detection
lrg at slimlogic.co.uk
Mon Sep 20 10:53:58 CEST 2010
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 at gmail.com>
> Acked-by: Mark Brown <broonie at opensource.wolfsonmicro.com>
Freelance Developer, SlimLogic Ltd
ASoC and Voltage Regulator Maintainer.
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