From: Jarkko Nikula <jhnikula@gmail.com>
Date: Fri, 17 Sep 2010 11:39:01 +0000 (+0300)
Subject: ASoC: tlv320aic3x: Add virtual output pin Detection
X-Git-Tag: v2.6.37-rc1~126^2~1^2~77^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=19f7ac5038dc11e1ee2c54bb411326d23b40ccff;p=pandora-kernel.git

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>
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