diff options
author | Peter Ujfalusi <peter.ujfalusi@nokia.com> | 2010-05-07 07:05:49 -0400 |
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committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-05-07 11:41:33 -0400 |
commit | 637d3847ba0ca2c7780e6521cbe75568d19ff0db (patch) | |
tree | 6a9b76e2d0365cabba43f7a273feceb66710bf4c /include/sound/sh_dac_audio.h | |
parent | 305787649826d6c84a6f9f71bc3318460610aba4 (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/sh_dac_audio.h')
0 files changed, 0 insertions, 0 deletions