[alsa-devel] at91 SoC Modifications

Frank Mandarino fmandarino at endrelia.com
Tue Jun 26 13:53:42 CEST 2007

Paul Kavan wrote:
> Well, I have fanned out all 6 SSC lines to the codec now and have them
> configured individually to create the desired effect. However, it is
> still buggy. TF0 now does not activate properly when in capture mode. I
> get the same type of waveform I received when I was using TF0 to attempt
> capture. Nothing seems to work correctly except playback....and only
> when I have TF0 sent to the codec's frame receive and send pins.....
> I want to look through the SoC code to where the SSC is activated/reset
> so I can try to determine what is happening. I know the SSC works well
> with this codec and want to figure out what I need to do to modify the
> code to make it happen with ALSA as well. I hate the idea of going back
> to the drawing board and trying to write my driver so that it uses the
> PDC, but the ALSA SoC is simply not working well enough yet with the
> at91sam9260.
> Does anyone know where I can find this code at?

All of the SSC code is contained in sound/soc/at91/at91-ssc.c in
functions at91_ssc_hw_params() and at91_ssc_shutdown().

Frank Mandarino                                fmandarino(a)endrelia.com
Endrelia Technologies Inc.
Toronto, Ontario, Canada

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