[alsa-devel] [PATCH 3/4] pxa-ssp: don't touch ssp registers when stream is running

Mark Brown broonie at sirena.org.uk
Wed Mar 4 21:42:22 CET 2009

On Wed, Mar 04, 2009 at 09:39:11PM +0100, Daniel Mack wrote:
> On Wed, Mar 04, 2009 at 08:33:52PM +0000, Mark Brown wrote:

> > I'd expect an error to be reported here - if we needed to change the
> > settings and can't things could go wrong.  Ideally it'd check to see if
> > the DAI format was being changed and only error if it was.

> In my tests, pxa_ssp_set_dai_fmt() was simply called twice, once for the
> input, once for the ouput. Hence I believed a silent exit in such a case

That'll be because you weren't changing the DAI format - hence my
comment about only erroring if the format is changed.

> fine. Does 'arecord -f cd | aplay -f cd' work for you?

It won't, but that's because I don't have hardware that can play back cd
format audio through the SSP port :)

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