[alsa-devel] wm8974 and sam9g45 atmel

Michele Da Rold michele.darold at ecsproject.com
Fri Jun 17 11:22:50 CEST 2011

Il 10/06/2011 12:31, Mark Brown ha scritto:
> On Thu, Jun 09, 2011 at 05:11:48PM +0200, Michele Da Rold wrote:
>> Hello everybody, I'm starting a new development with a Atmel SAM9G45 and
>> a WM8974.
> Please always CC maintainers on mails - traffic on the mailing list is
> easily lost.
>> I'm using kernel
> This kernel is *very* old - I would strongly recommend updating to a
> more current kernel if you're looking for support.
Updated to!
>> Putting some dedug messagge the driver not call the function
>> "set_bias_level", and call the mute function with mute=0.
>> Testing the MCLK signal I not see any clock on pin because I never call
>> clk_enable!!
> Have you routed audio from the DAI to an output using the ALSA controls?
> If you haven't connected an output path up then the kernel won't power
> anything on.
Now I have configured wm8974 like slave, the ssc generate BCLK e FRAME 
signal and MCLK but I haven't output (I'm doing a playback)
I'm new to alsa development so I haven't understand how to route audio 
to DAI from output, could you help me?

Best regards

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Michele Da Rold

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