[alsa-devel] user space control app driver interface for sound soc

[Mark Brown]

On Fri, Oct 01, 2010 at 03:42:55PM +0200, Takashi Iwai wrote:

> FWIW, if it's an EQ band coef data or such small and more-or-less safe
> data, you can create even a dedicated ALSA control element to
> read/write the byte array.  For example, SPDIF status bits are
> transferred in that way between the driver and the user-space.

Though in the embedded case platform data often ends up being idomatic
since many of the typical uses revolve around tuning things for physical
properties of the platform.