[PATCH 6.12 034/247] ASoC: max98371: Fix the Speaker DHT Min Volume bits

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

6.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: HyeongJun An <sammiee5311@gmail.com>

[ Upstream commit f7934340c56a84fc1b246ebf6b2e806d775f3b54 ]

Register 0x31 holds two 4-bit fields. The datasheet puts SPK_GAIN_MIN
at bits 7:4 and DHT_VROT_PNT at bits 3:0. The Speaker DHT Min Volume
and Speaker DHT Rotation Volume controls both use bits 3:0.

So setting the minimum speaker gain changes the DHT rotation point, and
SPK_GAIN_MIN cannot be set.

Move Speaker DHT Min Volume to bits 7:4.

Fixes: ca2cd6bc6663 ("ASoC: Add max98371 codec driver")
Assisted-by: Claude:claude-opus-5-5
Signed-off-by: HyeongJun An <sammiee5311@gmail.com>
Link: https://patch.msgid.link/20261008130953.2446692-5-sammiee5311@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/codecs/max98371.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/codecs/max98371.c b/sound/soc/codecs/max98371.c
index 852db211ba1e7..c53f76f0ade76 100644
--- a/sound/soc/codecs/max98371.c
+++ b/sound/soc/codecs/max98371.c
@@ -166,7 +166,7 @@ static const struct snd_kcontrol_new max98371_snd_controls[] = {
 			0, (1<<MAX98371_DHT_MAX_WIDTH)-1, 0,
 			max98371_dht_max_gain),
 	SOC_SINGLE_TLV("Speaker DHT Min Volume", MAX98371_DHT_GAIN,
-			0, (1<<MAX98371_DHT_GAIN_WIDTH)-1, 0,
+			4, (1<<MAX98371_DHT_GAIN_WIDTH)-1, 0,
 			max98371_dht_min_gain),
 	SOC_SINGLE_TLV("Speaker DHT Rotation Volume", MAX98371_DHT_GAIN,
 			0, (1<<MAX98371_DHT_ROT_WIDTH)-1, 0,
-- 
2.53.0