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ASoC: codecs: Fix gain setting ranges for Renesas IDT821034 codec

The gain ranges specified in Renesas IDT821034 codec documentation
are [-3dB;+13dB] in the transmit path (ADC) and [-13dB;+3dB] in the
receive path (DAC). Allthough the registers allow programming values
outside those ranges, the signal S/N and distorsion are only
guaranteed in the specified ranges.

Set ranges to the specified ones.

Fixes: e51166990e81 ("ASoC: codecs: Add support for the Renesas IDT821034 codec")
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://patch.msgid.link/2bd547194f3398e6182f770d7d6be711c702b4b2.1760029099.git.christophe.leroy@csgroup.eu
Signed-off-by: Mark Brown <broonie@kernel.org>

authored by

Christophe Leroy and committed by
Mark Brown 6370a996 7e6cfa3e

+6 -6
+6 -6
sound/soc/codecs/idt821034.c
··· 548 548 return ret; 549 549 } 550 550 551 - static const DECLARE_TLV_DB_LINEAR(idt821034_gain_in, -6520, 1306); 552 - #define IDT821034_GAIN_IN_MIN_RAW 1 /* -65.20 dB -> 10^(-65.2/20.0) * 1820 = 1 */ 553 - #define IDT821034_GAIN_IN_MAX_RAW 8191 /* 13.06 dB -> 10^(13.06/20.0) * 1820 = 8191 */ 551 + static const DECLARE_TLV_DB_LINEAR(idt821034_gain_in, -300, 1300); 552 + #define IDT821034_GAIN_IN_MIN_RAW 1288 /* -3.0 dB -> 10^(-3.0/20.0) * 1820 = 1288 */ 553 + #define IDT821034_GAIN_IN_MAX_RAW 8130 /* 13.0 dB -> 10^(13.0/20.0) * 1820 = 8130 */ 554 554 #define IDT821034_GAIN_IN_INIT_RAW 1820 /* 0dB -> 10^(0/20) * 1820 = 1820 */ 555 555 556 - static const DECLARE_TLV_DB_LINEAR(idt821034_gain_out, -6798, 1029); 557 - #define IDT821034_GAIN_OUT_MIN_RAW 1 /* -67.98 dB -> 10^(-67.98/20.0) * 2506 = 1*/ 558 - #define IDT821034_GAIN_OUT_MAX_RAW 8191 /* 10.29 dB -> 10^(10.29/20.0) * 2506 = 8191 */ 556 + static const DECLARE_TLV_DB_LINEAR(idt821034_gain_out, -1300, 300); 557 + #define IDT821034_GAIN_OUT_MIN_RAW 561 /* -13.0 dB -> 10^(-13.0/20.0) * 2506 = 561 */ 558 + #define IDT821034_GAIN_OUT_MAX_RAW 3540 /* 3.0 dB -> 10^(3.0/20.0) * 2506 = 3540 */ 559 559 #define IDT821034_GAIN_OUT_INIT_RAW 2506 /* 0dB -> 10^(0/20) * 2506 = 2506 */ 560 560 561 561 static const struct snd_kcontrol_new idt821034_controls[] = {