[alsa-devel] [PATCH] ASoC: da7219: check SRM lock in trigger callback

[Sridharan, Ranjani]

>
>
> > I think the patch is for those systems which enable I2S clocks in
> pcm_start instead
> > of pcm_prepare. It has no effect on systems already be able to turn on
> clocks in
> > supply widgets or set_bias_level() function.
> >
> > If the trigger type in the DAI link is TRIGGER_PRE, then the trigger
> function of FE port
> > (component or CPU DAI) will be called before codec driver's trigger
> function. In this
> > case we will be able to turn on the clock in time. However, if the
> trigger type is
> > TRIGGER_POST, then the patch does not help because just like what you
> said, codec
> > driver's trigger function is called first.
>
> IIRC we recently did a change to deal with underflows. Ranjani, can you
> remind us what the issue was?

Hi Pierre,

Are you talking about the change in this commit acbf27746ecfa96b
"ASoC: pcm: update FE/BE trigger order based on the command"?

We made this change to handle xruns during pause/release particularly on
the Intel HDA platforms.

Thanks,
Ranjani