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authorPetr Kulhavy <brain@jikos.cz>2016-06-01 09:30:00 +0200
committerMark Brown <broonie@kernel.org>2016-06-01 16:22:10 +0100
commitf7d3d2d8e8891433dc76f2427441b2584729e200 (patch)
tree56d5730043d9403db63e2178cd306cb8bd065c89 /sound
parent4b9e385b9dac5c84640b13e70dbbd8e2bb669c8d (diff)
downloadlinux-next-f7d3d2d8e8891433dc76f2427441b2584729e200.tar.gz
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: Petr Kulhavy <brain@jikos.cz> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/codecs/tas571x.c18
-rw-r--r--sound/soc/codecs/tas571x.h5
2 files changed, 23 insertions, 0 deletions
diff --git a/sound/soc/codecs/tas571x.c b/sound/soc/codecs/tas571x.c
index bc1fbafb8ea4..d8baca3f8413 100644
--- a/sound/soc/codecs/tas571x.c
+++ b/sound/soc/codecs/tas571x.c
@@ -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 = {
diff --git a/sound/soc/codecs/tas571x.h b/sound/soc/codecs/tas571x.h
index bf4d4362c784..c45677bc26ad 100644
--- a/sound/soc/codecs/tas571x.h
+++ b/sound/soc/codecs/tas571x.h
@@ -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 */