Re: [alsa-devel] [PATCH] [v2] ASoC: support all possible sample rates in the WM8776 driver

Takashi Iwai wrote:

It's not optimal from some aspects. Basically this should be resolved in hw_constraints, not in hw_params, so that the configurator can find the possible rates. Otherwise you have no idea what rate would be accepted.

Yes, I was concerned about that. So should I be calling one of the snd_pcm_hw_constraint_xxx functions in the codec's .startup function? That would require ASoC to call the machine driver's .startup function *before* calling the codec driver's .startup function, since the machine driver's .startup function is where I call the codec to tell it what the mclk frequency is.