ASoC: wcd9310: add IIR1 input volume controls

There are four inputs to IIR1. Gain range is between -84
to +40 DB for all 4 inputs. These gain controls would
serve mostly for sidetone gain control purpose.

CRs-fixed: 309261
Change-Id: I44141b07f764f75efc33d3badebb331d0322cdb2
Signed-off-by: Patrick Lai <plai@codeaurora.org>
diff --git a/sound/soc/codecs/wcd9310.c b/sound/soc/codecs/wcd9310.c
index d169001..ec31c0f 100644
--- a/sound/soc/codecs/wcd9310.c
+++ b/sound/soc/codecs/wcd9310.c
@@ -240,7 +240,14 @@
 		digital_gain),
 	SOC_SINGLE_S8_TLV("DEC10 Volume", TABLA_A_CDC_TX10_VOL_CTL_GAIN, -84,
 		40, digital_gain),
-
+	SOC_SINGLE_S8_TLV("IIR1 INP1 Volume", TABLA_A_CDC_IIR1_GAIN_B1_CTL, -84,
+		40, digital_gain),
+	SOC_SINGLE_S8_TLV("IIR1 INP2 Volume", TABLA_A_CDC_IIR1_GAIN_B2_CTL, -84,
+		40, digital_gain),
+	SOC_SINGLE_S8_TLV("IIR1 INP3 Volume", TABLA_A_CDC_IIR1_GAIN_B3_CTL, -84,
+		40, digital_gain),
+	SOC_SINGLE_S8_TLV("IIR1 INP4 Volume", TABLA_A_CDC_IIR1_GAIN_B4_CTL, -84,
+		40, digital_gain),
 	SOC_SINGLE_TLV("ADC1 Volume", TABLA_A_TX_1_2_EN, 5, 3, 0, analog_gain),
 	SOC_SINGLE_TLV("ADC2 Volume", TABLA_A_TX_1_2_EN, 1, 3, 0, analog_gain),
 	SOC_SINGLE_TLV("ADC3 Volume", TABLA_A_TX_3_4_EN, 5, 3, 0, analog_gain),