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ASoC: tlv320adcx140: Fix digital gain range

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According to its datasheet, the digital gain should be -100 dB when
CHx_DVOL is 1 and 27 dB when CHx_DVOL is 255. But with the current
dig_vol_tlv, "Digital CHx Out Volume" shows 27.5 dB if CHx_DVOL is 255
and -95.5 dB if CHx_DVOL is 1. This commit fixes this bug.

Fixes: 689c7655b5 ("ASoC: tlv320adcx140: Add the tlv320adcx140 codec driver family")
Signed-off-by: Camel Guo <camelg@axis.com>
Link: https://lore.kernel.org/r/20200908090417.16695-1-camel.guo@axis.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Camel Guo 2020-09-08 11:04:17 +02:00 committed by Mark Brown
parent 6788fc1a66
commit 73154aca4a
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GPG Key ID: 24D68B725D5487D0
1 changed files with 1 additions and 1 deletions
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2
sound/soc/codecs/tlv320adcx140.c
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@ -161,7 +161,7 @@ static const struct regmap_config adcx140_i2c_regmap = {
};
/* Digital Volume control. From -100 to 27 dB in 0.5 dB steps */
static DECLARE_TLV_DB_SCALE(dig_vol_tlv, -10000, 50, 0);
static DECLARE_TLV_DB_SCALE(dig_vol_tlv, -10050, 50, 0);
/* ADC gain. From 0 to 42 dB in 1 dB steps */
static DECLARE_TLV_DB_SCALE(adc_tlv, 0, 100, 0);