[alsa-devel] [PATCH 19/19] ASoC: upd9976: add capture volume for DMIC

[Lu Guanqun]

Signed-off-by: Lu Guanqun <guanqun.lu at intel.com>
---
 sound/soc/codecs/upd9976.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/sound/soc/codecs/upd9976.c b/sound/soc/codecs/upd9976.c
index 6fc9902..a35b891 100644
--- a/sound/soc/codecs/upd9976.c
+++ b/sound/soc/codecs/upd9976.c
@@ -115,6 +115,11 @@ static DECLARE_TLV_DB_SCALE(mixer_tlv, -2500, 100, 0);
  */
 static DECLARE_TLV_DB_SCALE(analog_tlv, -2500, 100, 0);
 
+/*
+ * DMIC Volume: from -63 dB to 1 dB in 1 db steps.
+ */
+static DECLARE_TLV_DB_SCALE(dmic_tlv, -6300, 100, 1);
+
 static const struct snd_kcontrol_new upd9976_snd_controls[] = {
 	SOC_DOUBLE_R_TLV("Headphone & Speaker Volume",
 			 UPD9976_HPSPRLVOL, UPD9976_HPSPRRVOL,
@@ -125,6 +130,8 @@ static const struct snd_kcontrol_new upd9976_snd_controls[] = {
 	SOC_DOUBLE_R_TLV("Analog Capture Volume",
 			 UPD9976_LILSEL, UPD9976_LILSEL,
 			 0, 0x1f, 1, analog_tlv),
+	SOC_SINGLE_TLV("Internal Mic Capture Volume",
+		       UPD9976_DMICCTRL1, 0, 0x3f, 1, dmic_tlv),
 };
 
 static const struct snd_kcontrol_new upd9976_hp_spkr_mixer_left_controls[] = {