ASoC: TWL4030: Add helper function for output gain controls

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Some of the gain controls in TWL (mostly those which are associated with
the outputs) are implemented in an interesting way:
 0x0 : Power down (mute)
 0x1 : 6dB
 0x2 : 0 dB
 0x3 : -6 dB
Inverting not going to help with these.
Custom volsw and volsw_2r get/put functions to handle these gains.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

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Peter Ujfalusi 2008-11-24 13:49:38 +02:00 • committed by Mark Brown

parent 0d33ea0b0f

commit b0bd53a739

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sound/soc/codecs/twl4030.c

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