[alsa-devel] [PATCH] ASoC: rx51: Correct DAPM route for capture

[Jarkko Nikula]

On 02/02/2015 07:13 PM, Lars-Peter Clausen wrote:
> On 01/30/2015 07:32 PM, Jarkko Nikula wrote:
> [...]
>> Here's additional data. Without this patch there are these errors below
>> when registering the card:
>>
>> [    8.804626] rx51-audio n900-audio: Connecting non-supply widget to
>> supply widget is not supported (DMic -> Mic Bias)
>> [    8.815795] rx51-audio n900-audio: ASoC: no dapm match for DMic -->
>> (null) --> Mic Bias
>> [    8.824249] rx51-audio n900-audio: ASoC: Failed to add route DMic ->
>> direct -> Mic Bias
>> [    8.832763] rx51-audio n900-audio: Connecting non-supply widget to
>> supply widget is not supported (HS Mic -> b Mic Bias)
>> [    8.844238] rx51-audio n900-audio: ASoC: no dapm match for HS Mic -->
>> (null) --> b Mic Bias
>> [    8.853057] rx51-audio n900-audio: ASoC: Failed to add route HS Mic
>> -> direct -> b Mic Bias
>>
>> This don't happen on v3.18 so in that sense Peter's patch is kind of
>> half-regression fix for v3.19.
> 
> What's new in v3.19 is that the kernel will shout if it encounters such
> a invalid route, previously it was just silently ignored. But either way
> it never actually worked, so it's not really a v3.19 regression.
> 
It used to work in the past, not sure about 3.18 since I didn't actually
test recording due missing mic bias from DT data (i.e. recording has
been actually broken quite many releases) but looks like your
e409dfbfccf9 ("ASoC: dapm: Add a few supply widget sanity checks") made
it visible. Fortunately Peter saw it from sources even without above
report. Good to have active users that report issues :-)

-- 
Jarkko