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ASoC: cs35l56: Limit Speaker Volume to +12dB maximum

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Change CS35L56_MAIN_RENDER_USER_VOLUME_MAX to 48, to limit the maximum
value of the Speaker Volume control to +12dB. The minimum value is
unchanged so that the default 0dB has the same integer control value.

The original maximum of 400 (+100dB) was the largest value that can be
mathematically handled by the DSP. The actual maximum amplification is
+12dB.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://patch.msgid.link/20240703095517.208077-3-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Richard Fitzgerald 2024-07-03 10:55:17 +01:00 • committed by Mark Brown
parent c66995ae40
commit 244389bd42
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1 changed files with 1 additions and 1 deletions
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2
include/sound/cs35l56.h
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@ -207,7 +207,7 @@
/* CS35L56_MAIN_RENDER_USER_VOLUME */
#define CS35L56_MAIN_RENDER_USER_VOLUME_MIN -400
#define CS35L56_MAIN_RENDER_USER_VOLUME_MAX 400
#define CS35L56_MAIN_RENDER_USER_VOLUME_MAX 48
#define CS35L56_MAIN_RENDER_USER_VOLUME_MASK 0x0000FFC0
#define CS35L56_MAIN_RENDER_USER_VOLUME_SHIFT 6
#define CS35L56_MAIN_RENDER_USER_VOLUME_SIGNBIT 9