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ASoC: wm8994: Support external capacitors on MICBIAS2 with jack detection

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When an external capacitor is connected to MICBIAS2 on devices with
jack detection (which is not required but may be done in some systems)
then the loading may mean that better performance is obtained when
the microphone bias is enabled normally rather than using the low power
mode. Provide platform data allowing systems to indicate if they require
this.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2012-02-21 16:23:35 +00:00
commit 07fb9d9e93
2 changed files with 27 additions and 0 deletions
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3
include/linux/mfd/wm8994/pdata.h
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@ -185,6 +185,9 @@ struct wm8994_pdata {
unsigned int jd_scthr:2;
unsigned int jd_thr:2;
/* Configure WM1811 jack detection for use with external capacitor */
unsigned int jd_ext_cap:1;
/* WM8958 microphone bias configuration */
int micbias[2];