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

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From: Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx>

commit 244389bd42870640c4b5ef672a360da329b579ed upstream.

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@xxxxxxxxxxxxxxxxxxxxx>
Link: https://patch.msgid.link/20240703095517.208077-3-rf@xxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 include/sound/cs35l56.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/include/sound/cs35l56.h
+++ b/include/sound/cs35l56.h
@@ -209,7 +209,7 @@
 
 /* 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


Patches currently in stable-queue which might be from rf@xxxxxxxxxxxxxxxxxxxxx are

queue-6.10/asoc-cs35l56-limit-speaker-volume-to-12db-maximum.patch
queue-6.10/asoc-cs35l56-use-header-defines-for-speaker-volume-control-definition.patch




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