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

[Peter Hsiang]

On Thu, Sep 30, 2010, Mark Brown wrote:
> On Thu, Sep 30, 2010 at 10:23:54AM -0700, Peter Hsiang wrote:
> 
> > If I want to build an audio user space app to perform things like
> > transferring large blocks of data to the sound soc codec
> > using I2C, what is the best kernel driver interface to use
> > for this purpose?  Add file interface (read/write/ioctl) in the
> > sound soc codec driver, or does ALSA already have this?
> > The soc codec driver needs to co-exist with this mechanism.
> 
> This depends on what's idiomatic for the data you need to download -
> what is the data?

The data could be filter coefficients, or maybe even proprietary 
binary code image that goes into the chip's memory.