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(parent: 060a175) | patch
ASoC: uniphier: add digital output volume for UniPhier sound system
authorKatsuhiro Suzuki <suzuki.katsuhiro@socionext.com>
Tue, 8 May 2018 03:16:39 +0000 (12:16 +0900)
committerMark Brown <broonie@kernel.org>
Wed, 9 May 2018 09:40:39 +0000 (18:40 +0900)
commit939ee37afa17e6b2182cb568ea279588a3ad5169
treedf7f3c3cbe31af36092def4d5016c252f3b265fdtree | snapshot
parent060a175235d076890cd4d9d11fef4ecb0b6f187ecommit | diff
ASoC: uniphier: add digital output volume for UniPhier sound system

This patch adds controllers for digital volume of PCM output. Volume
effects simply linear, not dB scale as follows:
  Gained PCM = Original * 0x4000 / Volume

The value range of volume is from 0x0001 to 0xffff. 0x0000 works as
mute. Initial value is 0x4000 (+0dB).

Signed-off-by: Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
sound/soc/uniphier/aio-core.c diff | blob | history
sound/soc/uniphier/aio-cpu.c diff | blob | history
sound/soc/uniphier/aio-reg.h diff | blob | history
sound/soc/uniphier/aio.h diff | blob | history
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