[alsa-devel] SoC pxa2xx-ac97 + wm9705 + touchscreen suspend/resume

Russell King - ARM Linux linux at arm.linux.org.uk
Thu Apr 2 14:13:48 CEST 2009

On Wed, Apr 01, 2009 at 08:27:10PM +0100, Mark Brown wrote:
> On Tue, Mar 31, 2009 at 07:37:55PM +0100, Russell King - ARM Linux wrote:
> > I don't think this is the complete story.  Sometime between 2.6.27 and
> > 2.6.29, the structure below /sys/devices/platform/soc-audio changed
> > (the ac97 codec moved to the top level.)
> I also haven't manage to reproduce the ordering issues with the register
> writes with or without my fixes so I can't be 100% confident that this
> will fix the problem you're seeing.  If you could post your machine
> driver that'd be helpful.

My machine driver is very simple and doesn't implement any suspend/resume
callbacks (that's what other things like soc-audio are doing, right?)

I've tried both your patches, and I still have to manually write to
GCR to bring the bus out of reset.  I'll investigate more in the coming

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