[alsa-devel] [PATCH] ASoC/multi-component: fix au1x platform

Manuel Lauss manuel.lauss at googlemail.com
Thu Aug 19 16:58:55 CEST 2010


On Thu, Aug 19, 2010 at 4:48 PM, Mark Brown
<broonie at opensource.wolfsonmicro.com> wrote:
> On Thu, Aug 19, 2010 at 04:39:17PM +0200, Manuel Lauss wrote:
>
>> True, but I don't see how one can pass instance data to
>> the ac97_read/write/whatever functions.
>
> The struct snd_ac97 * passed in to them has a pointer to the struct
> snd_card * for the card which should (via some further indirection)
> allow you to get back to the ASoC specific structures.

Are there an in-tree examples I could look at?  (and for example on how
to pass per-instance platform data around?  It's not immediately obvious
to me how to get data allocated in a platform_driver.probe() callback to
the various dai_ops and pcm_ops).

Thanks!
       Manuel Lauss
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