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authorPeter Ujfalusi <peter.ujfalusi@nokia.com>2010-05-07 14:05:49 +0300
committerMark Brown <broonie@opensource.wolfsonmicro.com>2010-05-07 16:41:33 +0100
commit637d3847ba0ca2c7780e6521cbe75568d19ff0db (patch)
tree6a9b76e2d0365cabba43f7a273feceb66710bf4c /include/sound/gus.h
parent305787649826d6c84a6f9f71bc3318460610aba4 (diff)
ASoC: core: Support for limiting the volume
Add support for the core to limit the maximum volume on an existing control. The function will modify the soc_mixer_control.max value of the given control. The new value must be lower than the original one (chip maximum) If there is a need for limiting a gain on a given control, than machine drivers can do the following in their snd_soc_dai_link.init function: snd_soc_limit_volume(codec, "TPA6140A2 Headphone Playback Volume", 21); This will modify the original 31 (chip maximum) to 21, so user space will not be able to set the gain higher than this. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'include/sound/gus.h')
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