[alsa-devel] [PATCH 3/3] Add ALSA driver for Atmel AC97 controller

Hans-Christian Egtvedt hans-christian.egtvedt at atmel.com
Wed Feb 4 13:15:05 CET 2009

On Wed, 4 Feb 2009 12:00:52 +0000
Mark Brown <broonie at sirena.org.uk> wrote:

> On Wed, Feb 04, 2009 at 12:48:34PM +0100, Hans-Christian Egtvedt
> wrote:
> > This patch adds ALSA support for the AC97 controller found on Atmel
> > AVR32 devices.
> > Tested on ATSTK1006 + ATSTK1000 with a development board with a AC97
> > codec.
> > Signed-off-by: Hans-Christian Egtvedt
> > <hans-christian.egtvedt at atmel.com>
> Just glancing over the code here this looks very like the code for the
> AT91 AC97 controller which Sedji (CCed) has posted in the past.  Is it
> possible to share the same driver for both chips, like we're doing
> with the ASoC drivers for the two architectures?  It'd make life
> easier if that were possible and I know there's a lot of people
> interested in the AT91 support for mainline.

Yes, it should be possible to share the AC97C driver between AT91 and
AVR32. Although this AC97C driver uses the DesignWare DMAC controller

I do not remember which DMA interface AT91 devices uses.

Should the driver go into sound/drivers then? And renamed to
atmel-ac97c.{c,h} for example.

Best regards,
Hans-Christian Egtvedt

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