[alsa-devel] Sound Card driver for audio codec, mux and dsp.

Diego Sueiro diego.sueiro at gmail.com
Wed Jul 17 15:17:11 CEST 2013

Hi there,

I need to develop a solution to expose to userspace a single sound
card with mixer controls for:

Audio codec : sgtl5000
Audio mux: used to select an audio source on sgtl5000 LINE_IN.
Audio dsp :sta309a

How can I implement this drivers? Should I have to create a sound-card
driver which is going to register and control the other drivers
(codec, mux, dsp)?

Is there some device driver or tutorial guide that I can use as an example?

I'm using the kernel 3.0.15 from Freescale [1].

[1] - http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/log/?h=imx_3.0.15_android

Kind Regards,

Diego Sueiro

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