[alsa-devel] WM9712 Not Giving output

Mark Brown broonie at opensource.wolfsonmicro.com
Mon Aug 4 14:12:21 CEST 2008

On Sat, Aug 02, 2008 at 02:46:17AM -0700, Nitin Mahajan wrote:

> I checked the mixer configuration.The registers 0x18h and 0x04h were mute at the time of initiating DMA for playback.

> I did set both registers with 0x7fff. From mixer point of view, If I am using an headphone, are these registers enough? I am still not able to hear anything.

Please provide alsactl output as requested - any configuration should be
done via the ALSA mixer rather than register writes.  In the case of
register 0x18 setting 0x7fff will set a gain of -34.5dB on each channel
which may be too low, depending on your input.

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