[alsa-devel] [PATCH RFC 1/3] sound: ac97: Add GPIO manipulation hooks

[Mark Brown]

On Tue, Jun 15, 2010 at 05:55:45PM +0200, Manuel Lauss wrote:
> Add callbacks to struct snd_ac97 to set and retrieve ac97 codec
> GPIO status.

> Signed-off-by: Manuel Lauss <manuel.lauss at googlemail.com>

CCing in Takashi since this is generic AC'97 stuff.

> ---
>  include/sound/ac97_codec.h |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/include/sound/ac97_codec.h b/include/sound/ac97_codec.h
> index 4940045..db3aee1 100644
> --- a/include/sound/ac97_codec.h
> +++ b/include/sound/ac97_codec.h
> @@ -437,6 +437,8 @@ struct snd_ac97_bus_ops {
>  	unsigned short (*read) (struct snd_ac97 *ac97, unsigned short reg);
>  	void (*wait) (struct snd_ac97 *ac97);
>  	void (*init) (struct snd_ac97 *ac97);
> +	void (*setgpio) (struct snd_ac97 *ac97, unsigned short gpio);
> +	unsigned short (*getgpio) (struct snd_ac97 *ac97);
>  };
>  
>  struct snd_ac97_bus {
> -- 
> 1.7.1
> 

So, I'd kind of expect some sort of interaction with gpiolib somewhere
if we do support GPIOs (I know the WM97xx custom stuff doesn't currently
use GPIOs but...).
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