Unverified Commit 73154aca authored Sep 08, 2020 by Camel Guo Committed by Mark Brown Sep 17, 2020

ASoC: tlv320adcx140: Fix digital gain range

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: 689c7655 ("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>

parent 6788fc1a

sound/soc/codecs/tlv320adcx140.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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);