Re: [alsa-devel] ASoC:Question on strict sequence followed for trigger

gsantosh@codeaurora.org wrote:

I see there is a strict sequence followed for trigger callback to codec dai, platform dai and cpu dai. In the below function of soc-core . int soc_pcm_trigger(struct snd_pcm_substream *substream, int cmd);

In some scenarios we may require the sequence to be the other case to make sure the underlying DSP / codec is configured and triggered properly.

The trigger callback should do nothing but actually start the stream. (In the ideal case, this would be setting one bit in a register of the DMA controller.)

Any configuration should be done in hw_params.

Regards, Clemens