Commit 19f7ac50 authored Sep 17, 2010 by Jarkko Nikula Committed by Liam Girdwood Sep 20, 2010

ASoC: tlv320aic3x: Add virtual output pin Detection



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>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

parent 611ad378

sound/soc/codecs/tlv320aic3x.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -646,6 +646,14 @@ static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
		SND_SOC_DAPM_INPUT("LINE1R"),
		SND_SOC_DAPM_INPUT("LINE2L"),
		SND_SOC_DAPM_INPUT("LINE2R"),

		/*
		* Virtual output pin to detection block inside codec. This can be
		* used to keep codec bias on if gpio or detection features are needed.
		* Force pin on or construct a path with an input jack and mic bias
		* widgets.
		*/
		SND_SOC_DAPM_OUTPUT("Detection"),
		};

		static const struct snd_soc_dapm_widget aic3007_dapm_widgets[] = {