ASoC: wm_hubs: Allow configuration of MICBIAS power up delay via pdata
Sometimes the analogue circuitry connected to the microphone needs some
time to settle after power up. Allow systems to configure this delay in
the platform data, the driver will then insert the required delay during
power up of paths that involve the microphone.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/include/sound/wm8993.h b/include/sound/wm8993.h
index eee19f6..8016fd8 100644
--- a/include/sound/wm8993.h
+++ b/include/sound/wm8993.h
@@ -32,6 +32,10 @@
unsigned int lineout1fb:1;
unsigned int lineout2fb:1;
+ /* Delay to add for microphones to stabalise after power up */
+ int micbias1_delay;
+ int micbias2_delay;
+
/* Microphone biases: 0=0.9*AVDD1 1=0.65*AVVD1 */
unsigned int micbias1_lvl:1;
unsigned int micbias2_lvl:1;