ASoC: Route Mic Bias in Visstrim_M10 board.

Visstrim_M10 board uses an external microphone
that can be enabled/disabled by the user

Signed-off-by: Javier Martin <javier.martin@vista-silicon.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/sound/soc/imx/mx27vis-aic32x4.c b/sound/soc/imx/mx27vis-aic32x4.c
index 3c2eed9094d5..d37e23cfc94d 100644
--- a/sound/soc/imx/mx27vis-aic32x4.c
+++ b/sound/soc/imx/mx27vis-aic32x4.c
@@ -74,6 +74,24 @@ static struct snd_soc_ops mx27vis_aic32x4_snd_ops = {
         .hw_params      = mx27vis_aic32x4_hw_params,
 };
 
+static const struct snd_kcontrol_new mx27vis_aic32x4_controls[] = {
+        SOC_DAPM_PIN_SWITCH("External Mic"),
+};
+
+static const struct snd_soc_dapm_widget aic32x4_dapm_widgets[] = {
+        SND_SOC_DAPM_MIC("External Mic", NULL),
+};
+
+static const struct snd_soc_dapm_route aic32x4_dapm_routes[] = {
+        {"Mic Bias", NULL, "External Mic"},
+        {"IN1_R", NULL, "Mic Bias"},
+        {"IN2_R", NULL, "Mic Bias"},
+        {"IN3_R", NULL, "Mic Bias"},
+        {"IN1_L", NULL, "Mic Bias"},
+        {"IN2_L", NULL, "Mic Bias"},
+        {"IN3_L", NULL, "Mic Bias"},
+};
+
 static struct snd_soc_dai_link mx27vis_aic32x4_dai = {
         .name           = "tlv320aic32x4",
         .stream_name    = "TLV320AIC32X4",
@@ -89,6 +107,12 @@ static struct snd_soc_card mx27vis_aic32x4 = {
         .owner          = THIS_MODULE,
         .dai_link       = &mx27vis_aic32x4_dai,
         .num_links      = 1,
+        .controls       = mx27vis_aic32x4_controls,
+        .num_controls   = ARRAY_SIZE(mx27vis_aic32x4_controls),
+        .dapm_widgets   = aic32x4_dapm_widgets,
+        .num_dapm_widgets = ARRAY_SIZE(aic32x4_dapm_widgets),
+        .dapm_routes    = aic32x4_dapm_routes,
+        .num_dapm_routes = ARRAY_SIZE(aic32x4_dapm_routes),
 };
 
 static struct platform_device *mx27vis_aic32x4_snd_device;