[alsa-devel] ASoC: multicodec: No matching channels with system with DACs and ADCs on same bus

[Ricard Wanderlof]

On Tue, 10 Nov 2015, Caleb Crome wrote:

>   I have a system that has separate DACs and ADCs, as opposed to
> bidirectional CODECS.
> 
> The ADCs have a snd_soc_dai_driver structure that have a .capture
> field defined with a .rates parameter, and the DACs have a
> snd_soc_dai_driver structure that have a .playback field defined with
> a .rates parameter.
> 
> However, the ADCs have no .playback.rates, and the DACs have no
> .capture.rates. Even though the ADC can record at a given rate and the
> DAC can play at that same rate, the soc_pcm_init_runtime_hw function
> calculates the rates in this loop:
> ...

I had the same problem earlier this year. I submitted a patch which takes 
care of this that was applied a little over a month ago:

http://mailman.alsa-project.org/pipermail/alsa-devel/2015-September/097729.html

/Ricard
-- 
Ricard Wolf Wanderlöf                           ricardw(at)axis.com
Axis Communications AB, Lund, Sweden            www.axis.com
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