[alsa-devel] wm8731 capture -dapm failure

[Alan Horstmann]

I've started a new thread to avoid confusion, and copied bits here:

On Monday 08 September 2008 21:51, Mark Brown wrote:
> On Mon, Sep 08, 2008 at 09:27:13PM +0100, Alan Horstmann wrote:
> > With just this one change we have been successful in running the codec
> > over spi.  At present we do have an issue with dapm during capture
> > -nothing is being turned on!  Any pointers would be appreciated.
>
> If you define DEBUG when building soc-dapm.c (a define at the top of the
> source file will do the trick) then it will be very verbose about the
> decisions it's making - that will normally point out the problem.
> Probably either one of the input controls is not configured to make a
> path from the input pins to the ADC or the input has been mistakenly
> marked as disabled.

That gets us lots of info to digest, and it does look like there are no dapm 
capture paths -listing below.  What we cannot fathom is why!

Can users of wm8731 confirm successful capture with dapm on any platform?  It 
is not clear at this stage whether we are looking for a problem on our 
platform, or a general bug in the driver dapm code.

Any assistance would be appreciated.

Alan

widget ADC
 HiFi Capture stream Capture event 1
widget DAC
 HiFi Playback stream Capture event 1
reg old 5f new 5f change 0
reg old 5f new 5f change 0
DAPM WM8731 snd_soc_dapm_stream_event
Ext Spk: Off  in 0 out 1
 in  static LHPOUT
Int Mic: Off  in 1 out 0
 out static Mic Bias
LLINEIN: Off  in 0 out 1
 out static Line Input
RLINEIN: Off  in 0 out 1
 out static Line Input
MICIN: Off  in 1 out 0
 in  static Mic Bias
 out static Mic Bias
Mic Bias: Off  in 1 out 0
 in  static Int Mic
 in  static MICIN
 out static MICIN
Line Input: Off  in 0 out 1
 in  static RLINEIN
 in  static LLINEIN
 out Line In Input Mux
Input Mux: Off  in 0 out 1
 in  Line In Line Input
 out static ADC
ADC: Off  in 0 out 1
 in  static Input Mux
RHPOUT: Off  in 0 out 1
 in  static Output Mixer
ROUT: Off  in 0 out 1
 in  static Output Mixer
LHPOUT: Off  in 0 out 1
 in  static Output Mixer
 out static Ext Spk
LOUT: Off  in 0 out 1
 in  static Output Mixer
DAC: Off  in 0 out 4
 out HiFi Playback Switch Output Mixer
Output Mixer: Off  in 0 out 4
 in  HiFi Playback Switch DAC
 out static LOUT
 out static LHPOUT
 out static ROUT
 out static RHPOUT