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[RFC] alsa-mixer: remove alsa mixer 2 channels max limit

Jaska Uimonen requested to merge juimonen/pulseaudio:alsa_multi_channel into master

We might have greater channel count than stereo in devices like dmic arrays (for example 4 dmics in Lenovo X1). However alsa mixer elements with more than 2 channels can't be used by pulseaudio, because of fixed size 2 array in channel mask. Remove this artificial limitation and set max channels to 8.

Signed-off-by: Jaska Uimonen jaska.uimonen@linux.intel.com

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