ASoC: wm8960: add kcontrol to select ADC data output

add kcontrol to select ADC data output.
Signed-off-by: Zidan Wang <zidan.wang@freescale.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/wm8960.c

@@ -147,6 +147,12 @@ static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
 static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
 static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"};
 static const char *wm8960_alcmode[] = {"ALC", "Limiter"};
+static const char *wm8960_adc_data_output_sel[] = {
+	"Left Data = Left ADC;  Right Data = Right ADC",
+	"Left Data = Left ADC;  Right Data = Left ADC",
+	"Left Data = Right ADC; Right Data = Right ADC",
+	"Left Data = Right ADC; Right Data = Left ADC",
+};
 
 static const struct soc_enum wm8960_enum[] = {
 	SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
@@ -155,6 +161,7 @@ static const struct soc_enum wm8960_enum[] = {
 	SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
 	SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
 	SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
+	SOC_ENUM_SINGLE(WM8960_ADDCTL1, 2, 4, wm8960_adc_data_output_sel),
 };
 
 static const int deemph_settings[] = { 0, 32000, 44100, 48000 };
@@ -295,6 +302,8 @@ SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume",
 	       WM8960_BYPASS2, 4, 7, 1, bypass_tlv),
 SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
 	       WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),
+
+SOC_ENUM("ADC Data Output Select", wm8960_enum[6]),
 };
 
 static const struct snd_kcontrol_new wm8960_lin_boost[] = {