The capture and playback paths both have a configurable gain after their respective mixer, which can be set from -31 dB to 0 dB in 32 steps.

Signed-off-by: Paul Cercueil paul@crapouillou.net --- sound/soc/codecs/jz4770.c | 9 +++++++++ 1 file changed, 9 insertions(+)

diff --git a/sound/soc/codecs/jz4770.c b/sound/soc/codecs/jz4770.c index 6b60120f59a6..1d0c467ab57b 100644 --- a/sound/soc/codecs/jz4770.c +++ b/sound/soc/codecs/jz4770.c @@ -307,6 +307,7 @@ static const DECLARE_TLV_DB_MINMAX_MUTE(dac_tlv, -3100, 0); static const DECLARE_TLV_DB_SCALE(adc_tlv, 0, 100, 0); static const DECLARE_TLV_DB_MINMAX(out_tlv, -2500, 600); static const DECLARE_TLV_DB_SCALE(linein_tlv, -2500, 100, 0); +static const DECLARE_TLV_DB_MINMAX(mixer_tlv, -3100, 0);

/* Unconditional controls. */ static const struct snd_kcontrol_new jz4770_codec_snd_controls[] = { @@ -319,6 +320,14 @@ static const struct snd_kcontrol_new jz4770_codec_snd_controls[] = { SOC_DOUBLE_R_TLV("Line In Bypass Playback Volume", JZ4770_CODEC_REG_GCR_LIBYL, JZ4770_CODEC_REG_GCR_LIBYR, REG_GCR_GAIN_OFFSET, REG_GCR_GAIN_MAX, 1, linein_tlv), + + SOC_SINGLE_TLV("Mixer Capture Volume", + JZ4770_CODEC_REG_GCR_MIXADC, + REG_GCR_GAIN_OFFSET, REG_GCR_GAIN_MAX, 1, mixer_tlv), + + SOC_SINGLE_TLV("Mixer Playback Volume", + JZ4770_CODEC_REG_GCR_MIXDAC, + REG_GCR_GAIN_OFFSET, REG_GCR_GAIN_MAX, 1, mixer_tlv), };

static const struct snd_kcontrol_new jz4770_codec_pcm_playback_controls[] = {