[alsa-devel] [PATCH 2/3] ASoC: Blackfin: add multi-channel supporting in Blackfin ASoC driver and AD1980 codec driver

[Mark Brown]

On Tue, Oct 21, 2008 at 12:30:23PM +0200, Takashi Iwai wrote:

> Of course, creating corresponding volume controls would be an option,
> but then it'll be annoying if the machine driver supports only two
> channels.

That's a bit of a general problem for ASoC.  It'd be possible to deal
with it by passing in configuration from the machine driver which
selects which controls are registered or which uses the ability to
disable controls that you've got in your unstable tree.

Normally it's not a big deal since end users never see the ALSA controls
directly but interact with a device-specific UI instead.