ASoC: wm8960: add DAC mono mix kcontrol

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In normal operation, the left and right channel digital audio data is
converted to analogue in two separate DACs. There is a mono-mix mode
where the two audio channels are mixed together digitally and then
converted to analogue using only one DAC, while the other DAC is
switched off. The mono-mix signal can be selected to appear on both
analogue output channels. The mono mix is automatically attenuated by
6dB to prevent clipping.

Signed-off-by: Zidan Wang <zidan.wang@freescale.com>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

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Zidan Wang 2016-01-08 16:57:01 +08:00 • committed by Mark Brown

parent 4a5893cf67

commit defbf708ba

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sound/soc/codecs/wm8960.c

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