Commit f7d3d2d8 authored by Petr Kulhavy's avatar Petr Kulhavy Committed by Mark Brown
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ASoC: tas571x: add input channel mixer for TAS5717/19 



Add channel 1 and 2 input mixer registers and the related ALSA mixer
controls for TAS5717/19 chips.

The mixer control coefficients on the chip are linear in the range
-3.99999 to +3.99999, encoded in 3.23 number format.
In this patch the mixer controls are limited to 128 values
from 0.0 to 1.0 in 1/64 steps.

Signed-off-by: default avatarPetr Kulhavy <brain@jikos.cz>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 4b9e385b

sound/soc/codecs/tas571x.c

+18 −0
Original line number Diff line number Diff line
@@ -64,6 +64,10 @@ static int tas571x_register_size(struct tas571x_private *priv, unsigned int reg) 
	case TAS571X_INPUT_MUX_REG:

	case TAS571X_CH4_SRC_SELECT_REG:

	case TAS571X_PWM_MUX_REG:

	case TAS5717_CH1_RIGHT_CH_MIX_REG:

	case TAS5717_CH1_LEFT_CH_MIX_REG:

	case TAS5717_CH2_LEFT_CH_MIX_REG:

	case TAS5717_CH2_RIGHT_CH_MIX_REG:

		return 4;

	default:

		return 1;
@@ -397,6 +401,16 @@ static const struct snd_kcontrol_new tas5711_controls[] = { 
		   TAS571X_SOFT_MUTE_REG,

		   TAS571X_SOFT_MUTE_CH1_SHIFT, TAS571X_SOFT_MUTE_CH2_SHIFT,

		   1, 1),



	SOC_DOUBLE_R_RANGE("CH1 Mixer Volume",

			   TAS5717_CH1_LEFT_CH_MIX_REG,

			   TAS5717_CH1_RIGHT_CH_MIX_REG,

			   16, 0, 0x80, 0),



	SOC_DOUBLE_R_RANGE("CH2 Mixer Volume",

			   TAS5717_CH2_LEFT_CH_MIX_REG,

			   TAS5717_CH2_RIGHT_CH_MIX_REG,

			   16, 0, 0x80, 0),

};



static const struct regmap_range tas571x_readonly_regs_range[] = {
@@ -520,6 +534,10 @@ static const struct reg_default tas5717_reg_defaults[] = { 
	{ 0x08, 0x00c0 },

	{ 0x09, 0x00c0 },

	{ 0x1b, 0x82 },

	{ TAS5717_CH1_RIGHT_CH_MIX_REG, 0x0 },

	{ TAS5717_CH1_LEFT_CH_MIX_REG, 0x800000},

	{ TAS5717_CH2_LEFT_CH_MIX_REG, 0x0 },

	{ TAS5717_CH2_RIGHT_CH_MIX_REG, 0x800000},

};



static const struct regmap_config tas5717_regmap_config = {

sound/soc/codecs/tas571x.h

+5 −0
Original line number Diff line number Diff line
@@ -87,4 +87,9 @@ 
#define TAS5717_CH3_BQ0_REG		0x5e

#define TAS5717_CH3_BQ1_REG		0x5f



#define TAS5717_CH1_RIGHT_CH_MIX_REG	0x72

#define TAS5717_CH1_LEFT_CH_MIX_REG	0x73

#define TAS5717_CH2_LEFT_CH_MIX_REG	0x76

#define TAS5717_CH2_RIGHT_CH_MIX_REG	0x77



#endif /* _TAS571X_H */

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