[alsa-devel] [PATCH] ASoC: core - Add support for DAI and machine kcontrols.

[Liam Girdwood]

On Fri, 2012-02-03 at 20:46 +0000, Mark Brown wrote:
> On Fri, Feb 03, 2012 at 05:43:09PM +0000, Liam Girdwood wrote:
> 
> > 1) Use snd_soc_add_card_controls() where no direct codec control is required.
> > 2) Use snd_soc_add_codec_controls() where there is direct codec control.
> 
> > In the case of 1) above we also update the machine drivers to get the correct
> > component data pointers from the kcontrol (rather than getting the machine pointer
> > via the codec pointer).
> 
> Hrm, I can't apply this right now as I don't have an appropriate system
> to hand but what are the cases where there is CODEC control?  This
> sounds suspicous, perhaps we need some of the drivers enhancing (though
> no reason to block this patch).

There were some machine drivers that would just do a little extra
indirection (getting the soc_card via the kcontrol codec ptr) with their
kcontrols to access the machine private data. The patch fixed the
appropriate machine drivers so that they can access soc_card directly
now.

There was also the McBSP DAI using the codec ptr for a similar purpose.

The other machine drivers were all using the codec pointer to do extra
codec configuration with their kcontrol code so there was no update for
them.

Liam