[alsa-devel] [patch 1/3] ASoC: add support for alc562[123] codecs

Mark Brown broonie at opensource.wolfsonmicro.com
Wed Oct 13 20:03:56 CEST 2010

On Wed, Oct 13, 2010 at 07:58:03PM +0200, Arnaud Patard wrote:
> Mark Brown <broonie at opensource.wolfsonmicro.com> writes:

> >> +	switch (level) {
> >> +	case SND_SOC_BIAS_ON:
> >> +		enable_power_depop(codec);
> >> +		break;

> > enable_power_depop() takes a rather long time - about 500ms - which is
> > surprising for _ON.  Are you sure it should be done here?

> It was there in the original driver and when working on this driver, I
> didn't see any reason for moving it elsewhere. tbh, if I have to move it
> elsewhere, I don't know where I'll put it.

Normally _PREPARE if you must do it whenever bringing up playback but
generally you should try to do anything really slow when bringing the
biases up to standby.  Bear in mind that I've no idea what's actually
being done here...

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