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| author | Petr Kulhavy <brain@jikos.cz> | 2016-06-01 09:30:00 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-06-01 17:22:10 +0200 |
| commit | f7d3d2d8e8891433dc76f2427441b2584729e200 (patch) | |
| tree | 56d5730043d9403db63e2178cd306cb8bd065c89 /sound/soc/codecs/tas571x.c | |
| parent | ASoC: tas571x: add biquads for TAS5717/19 (diff) | |
| download | linux-f7d3d2d8e8891433dc76f2427441b2584729e200.tar.xz linux-f7d3d2d8e8891433dc76f2427441b2584729e200.zip | |
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/soc/codecs/tas571x.c')
| -rw-r--r-- | sound/soc/codecs/tas571x.c | 18 |
1 files changed, 18 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 = { |