[alsa-devel] [PATCH RFC 2/3] input: wm97xx: set GPIOs with AC97 GPIO busops if implemented

Manuel Lauss manuel.lauss at googlemail.com
Tue Jun 15 18:17:18 CEST 2010

On Tue, Jun 15, 2010 at 6:08 PM, Mark Brown
<broonie at opensource.wolfsonmicro.com> wrote:
> On Tue, Jun 15, 2010 at 05:55:46PM +0200, Manuel Lauss wrote:
>> If the AC97 controller implements the ->setgpio callback, use it.
>> Some codecs (i.e. WM9712) only accept GPIO data through AC97 slot 12.
>> Signed-off-by: Manuel Lauss <manuel.lauss at googlemail.com>
> It seems like it'd be easier to just do this as a generic AC'97 thing
> rather than adding it to the WM97xx driver - that way any CODEC that has
> GPIO support can use it, we don't have to add custom per-CODEC GPIO APIs.
> If you're using the WM97xx-specific code you're already doing something
> custom so it's not much loss to use a generic thing.

Oh, now I get it.  Hmm, what about setting pin direction?  That
certainly is per-codec, no?

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