Il 17/06/2011 11:22, Michele Da Rold ha scritto:
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 2.6.33.2
This kernel is *very* old - I would strongly recommend updating to a more current kernel if you're looking for support.
Updated to 2.6.39.1!
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?
UPDATE!!!!!!! Using amixer I have put to on the numid=61,iface=MIXER,name='Speaker Mixer PCM Playback Switch' ON numid=46,iface=MIXER,name='Speaker Playback Volume' 63 (max value)
and then the playback start but at speaker output I have only noise no sound!!
I have another question: it's better to use wm8974 like master? because I have see that the atmel ssc is not so good generating clocks....
Thank you
Michele
Best regards
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