[alsa-devel] Accessing snd_soc_read/snd_soc_write directly for diagnostics

Mike Crowe drmikecrowe at gmail.com
Fri Jul 16 06:00:32 CEST 2010

Hi folks,

Cancel this.  Turns out our codec only implemented i2c read for the first 4
bytes (not all registers).  However, it is caching the registers in the
"/sys/devices/platform/soc-audio/codec_reg" file, which was what we needed
to get to.


On Fri, Jul 16, 2010 at 9:33 AM, Mike Crowe <drmikecrowe at gmail.com> wrote:

> Hi folks,
> I know this is a strange request, however, for diagnostic purposes in our
> embedded system, we would like to talk directly to the codec registers of
> our sound chip, bypassing alsa.  I have the driver compiled into the kernel
> (not loaded as a module).
> Is it possible to create a program which can talk to the snd_soc_read and
> snd_soc_write functions directly?  I'm not sure if this is an option, but if
> it is, I'd appreciate a pointer to something similar to use as a guide.
> Mike

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