[alsa-devel] [ASoC] Mic record is not working with wm9713 ASoC driver

[Liam Girdwood]

On Wed, 2007-05-09 at 13:02 +0530, Nobin Mathew wrote:
> I am trying to record mic with AsoC wm9713 driver. My Mic is connected "Mic 1".
> 
> My settings
> 
> 'Mic A Source' -> "Mic 1"
> 'Mic Boost (+20dB)' [on]
> 'Capture' [on]
> 'Left Capture Source' "Mic 1"
> 'Right Capture Source' "Mic 1"
> 
> 
> i am issuing following command to record
> "arecord -M -f S16_LE sound.wav"
> 
> But what i found is driver is not enabling "Mic bias" and "Mic A PGA"
> 
> this dump of /sys/devices/platform/soc-audio/dapm_widget while
> "arecord" is running is given below
> 
> 
> Mic Bias: Off
> Mic B Pre Amp: Off
> Mic A Pre Amp: On
> Mic B PGA: Off
> Mic A PGA: Off
> Mono In: Off
> Right Line In: Off
> Left Line In: Off
> Mono Out: Off
> Out 4: Off
> Out 3: Off
> Right Speaker: Off
> Left Speaker: Off
> Right Headphone: Off
> Left Headphone: Off
> Right ADC: On
> Left ADC: On
> Aux DAC: Off
> Voice DAC: Off
> Capture Mixer: Off
> HP Mixer: Off
> AC97 Mixer: Off
> Right DAC: Off
> Left DAC: Off
> Speaker Mixer: Off
> Mono Mixer: Off
> Right HP Mixer: Off
> Left HP Mixer: Off
> PM State: D0
> 
> In idea why this is happening?
> what is going wrong with my settings?

It looks like there is an incomplete audio path from Mic1 --> ADC, hence
DAPM will power down all unused components. Fwiw, I have captured from
WM9713 Mic1 in the past on Mainstone. Machine driver is here for
reference :-

http://opensource.wolfsonmicro.com/cgi-bin/gitweb/gitweb.cgi?p=linux-2.6-asoc;a=blob;f=sound/soc/pxa/mainstone_wm9713.c;h=65c6517e60bc88478796c67fbbfe9c2243c14a88;hb=dev


Can you post your machine driver. It may help with debugging.

Liam