[alsa-devel] [PATCH v3 2/8] ASoC: da7210: Add support for DAPM

Ashish Chavan ashish.chavan at kpitcummins.com
Wed Oct 19 09:21:35 CEST 2011

On Mon, 2011-10-17 at 22:41 +0100, Mark Brown wrote:
> On Sat, Oct 15, 2011 at 01:50:03PM +0530, Ashish Chavan wrote:
> > There are two type of registers for all IOs (HP, MIC, AUX) as well as
> > DAC and ADC. One type of registers control individual enable and disable
> > of IO, while other set of register controls the standby mode of that
> > particular IO. e.g. For ADC,
> What are "enable and disable" in this context?  What do they do if not
> put the part of the chip into a low power mode?  This is an intriguing
> hardware design and it really needs some documentation in the driver,
> right now it's just far too obscure and the driver looks buggy on code
> inspection.

I have queried hardware designers to get more insight in to this and
will update the response here. Probably after that we will be confident
about driver's handling of DAPM.

BTW if in case, hardware designers reiterate to use STANDBY registers,
will it suffice to only document this somewhere is the source?

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