[alsa-devel] [PATCH v3 4/8] ASoC: da7210: Add support for line input and mic

[Ashish Chavan]

DA7210 has three line inputs (AUX1 Left, AUX1 Right and AUX2) and
a stereo MIC. This patch adds gain controls for MIC, AUX1, AUX2 as
well as INPGA. It also adds a control to set  MIC BIAS voltage.

Signed-off-by: Ashish Chavan <ashish.chavan at kpitcummins.com>
Signed-off-by: David Dajun Chen <dchen at diasemi.com>
---
Changes since v2:
- Removed static enable of mic and aux, as now DAPM will take care of
that

Changes since v1:
- Removed explicit setting of default gains
- Removed control to set mic bias voltage
---
 sound/soc/codecs/da7210.c |   44 ++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 44 insertions(+), 0 deletions(-)

diff --git a/sound/soc/codecs/da7210.c b/sound/soc/codecs/da7210.c
index a7ea07d..bc40fd8 100644
--- a/sound/soc/codecs/da7210.c
+++ b/sound/soc/codecs/da7210.c
@@ -32,6 +32,10 @@
 #define DA7210_STARTUP3			0x05
 #define DA7210_MIC_L			0x07
 #define DA7210_MIC_R			0x08
+#define DA7210_AUX1_L			0x09
+#define DA7210_AUX1_R			0x0A
+#define DA7210_AUX2			0x0B
+#define DA7210_IN_GAIN			0x0C
 #define DA7210_INMIX_L			0x0D
 #define DA7210_INMIX_R			0x0E
 #define DA7210_ADC_HPF			0x0F
@@ -154,6 +158,15 @@
 #define DA7210_OUT2_OUTMIX_L		(1 << 6)
 #define DA7210_OUT2_EN			(1 << 7)
 
+/* AUX1_L bit fields */
+#define DA7210_AUX1_L_EN		(1 << 7)
+
+/* AUX1_R bit fields */
+#define DA7210_AUX1_R_EN		(1 << 7)
+
+/* AUX2 bit fields */
+#define DA7210_AUX2_EN			(1 << 3)
+
 #define DA7210_VERSION "0.0.1"
 
 /*
@@ -175,6 +188,9 @@ static const unsigned int hp_out_tlv[] = {
 };
 
 static const DECLARE_TLV_DB_SCALE(dac_gain_tlv, -7725, 75, 0);
+static const DECLARE_TLV_DB_SCALE(mic_vol_tlv, -600, 600, 0);
+static const DECLARE_TLV_DB_SCALE(aux2_vol_tlv, -600, 600, 0);
+static const DECLARE_TLV_DB_SCALE(inpga_gain_tlv, -450, 150, 0);
 
 static const unsigned int lineout_vol_tlv[] = {
 	TLV_DB_RANGE_HEAD(2),
@@ -190,6 +206,13 @@ static const unsigned int mono_vol_tlv[] = {
 	0x3, 0x7, TLV_DB_SCALE_ITEM(-1800, 600, 0)
 };
 
+static const unsigned int aux1_vol_tlv[] = {
+	TLV_DB_RANGE_HEAD(2),
+	0x0, 0x10, TLV_DB_SCALE_ITEM(TLV_DB_GAIN_MUTE, 0, 1),
+	/* -48dB to 21dB */
+	0x11, 0x3f, TLV_DB_SCALE_ITEM(-4800, 150, 0)
+};
+
 static const struct snd_kcontrol_new da7210_snd_controls[] = {
 
 	SOC_DOUBLE_R_TLV("HeadPhone Playback Volume",
@@ -203,6 +226,21 @@ static const struct snd_kcontrol_new da7210_snd_controls[] = {
 			 0, 0x3f, 0, lineout_vol_tlv),
 	SOC_SINGLE_TLV("Mono Playback Volume", DA7210_OUT2, 0, 0x7, 0,
 		       mono_vol_tlv),
+
+	/* MIC related controls */
+	SOC_DOUBLE_R_TLV("Mic Capture Volume",
+			 DA7210_MIC_L, DA7210_MIC_R,
+			 0, 0x5, 0, mic_vol_tlv),
+
+	/* AUX related controls */
+	SOC_DOUBLE_R_TLV("Aux1 Capture Volume",
+			 DA7210_AUX1_L, DA7210_AUX1_R,
+			 0, 0x3f, 0, aux1_vol_tlv),
+	SOC_SINGLE_TLV("Aux2 Capture Volume", DA7210_AUX2, 0, 0x3, 0,
+		       aux2_vol_tlv),
+
+	SOC_DOUBLE_TLV("In PGA Capture Volume", DA7210_IN_GAIN, 0, 4, 0xF, 0,
+		       inpga_gain_tlv),
 };
 
 /*
@@ -702,6 +740,12 @@ static int da7210_probe(struct snd_soc_codec *codec)
 	snd_soc_write(codec, DA7210_OUT2, DA7210_OUT2_EN |
 		     DA7210_OUT2_OUTMIX_L | DA7210_OUT2_OUTMIX_R);
 
+	/* Enable Aux1 */
+	snd_soc_write(codec, DA7210_AUX1_L, DA7210_AUX1_L_EN);
+	snd_soc_write(codec, DA7210_AUX1_R, DA7210_AUX1_R_EN);
+	/* Enable Aux2 */
+	snd_soc_write(codec, DA7210_AUX2, DA7210_AUX2_EN);
+
 	/* Diable PLL and bypass it */
 	snd_soc_write(codec, DA7210_PLL, DA7210_PLL_FS_48000);
 
-- 
1.7.1