diff --git a/Documentation/devicetree/bindings/sound/tlv320aic3x.txt b/Documentation/devicetree/bindings/sound/tlv320aic3x.txt
index e7b98f41fa5fd14eba634184848529f1b519a68c..f47c3f589fd03a8deb2485292116e33d17a0f7da 100644
--- a/Documentation/devicetree/bindings/sound/tlv320aic3x.txt
+++ b/Documentation/devicetree/bindings/sound/tlv320aic3x.txt
@@ -11,6 +11,12 @@ Optional properties:
- gpio-reset - gpio pin number used for codec reset
- ai3x-gpio-func - <array of 2 int> - AIC3X_GPIO1 & AIC3X_GPIO2 Functionality
+- ai3x-micbias-vg - MicBias Voltage required.
+ 1 - MICBIAS output is powered to 2.0V,
+ 2 - MICBIAS output is powered to 2.5V,
+ 3 - MICBIAS output is connected to AVDD,
+ If this node is not mentioned or if the value is incorrect, then MicBias
+ is powered down.
Example:
diff --git a/include/sound/tlv320aic3x.h b/include/sound/tlv320aic3x.h
index ffd9bc7931053f0713c88df9b9ee6def2e938cae..9407fd00363be527b3ce27e9f5aabca8fff5a2b0 100644
--- a/include/sound/tlv320aic3x.h
+++ b/include/sound/tlv320aic3x.h
@@ -46,6 +46,13 @@ enum {
AIC3X_GPIO2_FUNC_BUTTON_PRESS_IRQ = 15
};
+enum aic3x_micbias_voltage {
+ AIC3X_MICBIAS_OFF = 0,
+ AIC3X_MICBIAS_2_0V = 1,
+ AIC3X_MICBIAS_2_5V = 2,
+ AIC3X_MICBIAS_AVDDV = 3,
+};
+
struct aic3x_setup_data {
unsigned int gpio_func[2];
};
@@ -53,6 +60,9 @@ struct aic3x_setup_data {
struct aic3x_pdata {
int gpio_reset; /* < 0 if not used */
struct aic3x_setup_data *setup;
+
+ /* Selects the micbias voltage */
+ enum aic3x_micbias_voltage micbias_vg;
};
#endif
diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c
index 5708a973a77627a21c71143ff7e7622ab47314ee..ba82ba2a7133d68053feb317b992c319cddfd305 100644
--- a/sound/soc/codecs/tlv320aic3x.c
+++ b/sound/soc/codecs/tlv320aic3x.c
@@ -85,6 +85,9 @@ struct aic3x_priv {
#define AIC3X_MODEL_33 1
#define AIC3X_MODEL_3007 2
u16 model;
+
+ /* Selects the micbias voltage */
+ enum aic3x_micbias_voltage micbias_vg;
};
/*
@@ -195,6 +198,37 @@ static int snd_soc_dapm_put_volsw_aic3x(struct snd_kcontrol *kcontrol,
return ret;
}
+/*
+ * mic bias power on/off share the same register bits with
+ * output voltage of mic bias. when power on mic bias, we
+ * need reclaim it to voltage value.
+ * 0x0 = Powered off
+ * 0x1 = MICBIAS output is powered to 2.0V,
+ * 0x2 = MICBIAS output is powered to 2.5V
+ * 0x3 = MICBIAS output is connected to AVDD
+ */
+static int mic_bias_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_codec *codec = w->codec;
+ struct aic3x_priv *aic3x = snd_soc_codec_get_drvdata(codec);
+
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMU:
+ /* change mic bias voltage to user defined */
+ snd_soc_update_bits(codec, MICBIAS_CTRL,
+ MICBIAS_LEVEL_MASK,
+ aic3x->micbias_vg << MICBIAS_LEVEL_SHIFT);
+ break;
+
+ case SND_SOC_DAPM_PRE_PMD:
+ snd_soc_update_bits(codec, MICBIAS_CTRL,
+ MICBIAS_LEVEL_MASK, 0);
+ break;
+ }
+ return 0;
+}
+
static const char *aic3x_left_dac_mux[] = { "DAC_L1", "DAC_L3", "DAC_L2" };
static const char *aic3x_right_dac_mux[] = { "DAC_R1", "DAC_R3", "DAC_R2" };
static const char *aic3x_left_hpcom_mux[] =
@@ -596,12 +630,9 @@ static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
AIC3X_ASD_INTF_CTRLA, 0, 3, 3, 0),
/* Mic Bias */
- SND_SOC_DAPM_REG(snd_soc_dapm_micbias, "Mic Bias 2V",
- MICBIAS_CTRL, 6, 3, 1, 0),
- SND_SOC_DAPM_REG(snd_soc_dapm_micbias, "Mic Bias 2.5V",
- MICBIAS_CTRL, 6, 3, 2, 0),
- SND_SOC_DAPM_REG(snd_soc_dapm_micbias, "Mic Bias AVDD",
- MICBIAS_CTRL, 6, 3, 3, 0),
+ SND_SOC_DAPM_SUPPLY("Mic Bias", MICBIAS_CTRL, 6, 0,
+ mic_bias_event,
+ SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
/* Output mixers */
SND_SOC_DAPM_MIXER("Left Line Mixer", SND_SOC_NOPM, 0, 0,
@@ -1386,6 +1417,24 @@ static int aic3x_probe(struct snd_soc_codec *codec)
if (aic3x->model == AIC3X_MODEL_3007)
snd_soc_add_codec_controls(codec, &aic3x_classd_amp_gain_ctrl, 1);
+ /* set mic bias voltage */
+ switch (aic3x->micbias_vg) {
+ case AIC3X_MICBIAS_2_0V:
+ case AIC3X_MICBIAS_2_5V:
+ case AIC3X_MICBIAS_AVDDV:
+ snd_soc_update_bits(codec, MICBIAS_CTRL,
+ MICBIAS_LEVEL_MASK,
+ (aic3x->micbias_vg) << MICBIAS_LEVEL_SHIFT);
+ break;
+ case AIC3X_MICBIAS_OFF:
+ /*
+ * noting to do. target won't enter here. This is just to avoid
+ * compile time warning "warning: enumeration value
+ * 'AIC3X_MICBIAS_OFF' not handled in switch"
+ */
+ break;
+ }
+
aic3x_add_widgets(codec);
list_add(&aic3x->list, &reset_list);
@@ -1461,6 +1510,7 @@ static int aic3x_i2c_probe(struct i2c_client *i2c,
struct aic3x_setup_data *ai3x_setup;
struct device_node *np = i2c->dev.of_node;
int ret;
+ u32 value;
aic3x = devm_kzalloc(&i2c->dev, sizeof(struct aic3x_priv), GFP_KERNEL);
if (aic3x == NULL) {
@@ -1474,6 +1524,7 @@ static int aic3x_i2c_probe(struct i2c_client *i2c,
if (pdata) {
aic3x->gpio_reset = pdata->gpio_reset;
aic3x->setup = pdata->setup;
+ aic3x->micbias_vg = pdata->micbias_vg;
} else if (np) {
ai3x_setup = devm_kzalloc(&i2c->dev, sizeof(*ai3x_setup),
GFP_KERNEL);
@@ -1493,6 +1544,26 @@ static int aic3x_i2c_probe(struct i2c_client *i2c,
aic3x->setup = ai3x_setup;
}
+ if (!of_property_read_u32(np, "ai3x-micbias-vg", &value)) {
+ switch (value) {
+ case 1 :
+ aic3x->micbias_vg = AIC3X_MICBIAS_2_0V;
+ break;
+ case 2 :
+ aic3x->micbias_vg = AIC3X_MICBIAS_2_5V;
+ break;
+ case 3 :
+ aic3x->micbias_vg = AIC3X_MICBIAS_AVDDV;
+ break;
+ default :
+ aic3x->micbias_vg = AIC3X_MICBIAS_OFF;
+ dev_err(&i2c->dev, "Unsuitable MicBias voltage "
+ "found in DT\n");
+ }
+ } else {
+ aic3x->micbias_vg = AIC3X_MICBIAS_OFF;
+ }
+
} else {
aic3x->gpio_reset = -1;
}
diff --git a/sound/soc/codecs/tlv320aic3x.h b/sound/soc/codecs/tlv320aic3x.h
index 6db3c41b0163823fc49cb280f088366fe2cd21fb..e521ac3ddde82b1de6adbc6ed0c9491c60d7fcef 100644
--- a/sound/soc/codecs/tlv320aic3x.h
+++ b/sound/soc/codecs/tlv320aic3x.h
@@ -238,6 +238,10 @@
/* Default input volume */
#define DEFAULT_GAIN 0x20
+/* MICBIAS Control Register */
+#define MICBIAS_LEVEL_SHIFT (6)
+#define MICBIAS_LEVEL_MASK (3 << 6)
+
/* headset detection / button API */
/* The AIC3x supports detection of stereo headsets (GND + left + right signal)
diff --git a/sound/soc/davinci/davinci-evm.c b/sound/soc/davinci/davinci-evm.c
index d55e6477bff0c9a855379d26db50538ff7b5e178..484b22c5df5df80a5a69d3a8745bb37f91eb49b8 100644
--- a/sound/soc/davinci/davinci-evm.c
+++ b/sound/soc/davinci/davinci-evm.c
@@ -116,9 +116,9 @@ static const struct snd_soc_dapm_route audio_map[] = {
{"Line Out", NULL, "RLOUT"},
/* Mic connected to (MIC3L | MIC3R) */
- {"MIC3L", NULL, "Mic Bias 2V"},
- {"MIC3R", NULL, "Mic Bias 2V"},
- {"Mic Bias 2V", NULL, "Mic Jack"},
+ {"MIC3L", NULL, "Mic Bias"},
+ {"MIC3R", NULL, "Mic Bias"},
+ {"Mic Bias", NULL, "Mic Jack"},
/* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
{"LINE1L", NULL, "Line In"},
diff --git a/sound/soc/omap/n810.c b/sound/soc/omap/n810.c
index 230b8c14484842ac961dd651320ebe072a9cc8bd..ee7cd53aa3ee7db8b430b84f170b9be3bdc2852c 100644
--- a/sound/soc/omap/n810.c
+++ b/sound/soc/omap/n810.c
@@ -230,8 +230,8 @@ static const struct snd_soc_dapm_route audio_map[] = {
{"Ext Spk", NULL, "LLOUT"},
{"Ext Spk", NULL, "RLOUT"},
- {"DMic Rate 64", NULL, "Mic Bias 2V"},
- {"Mic Bias 2V", NULL, "DMic"},
+ {"DMic Rate 64", NULL, "Mic Bias"},
+ {"Mic Bias", NULL, "DMic"},
};
static const char *spk_function[] = {"Off", "On"};
diff --git a/sound/soc/omap/rx51.c b/sound/soc/omap/rx51.c
index d921ddbe3ecbd2fdaa11ca1f14b1e8a7e20c4286..3cd5257489759b41a053aca0e10955f7df1ae8b5 100644
--- a/sound/soc/omap/rx51.c
+++ b/sound/soc/omap/rx51.c
@@ -248,16 +248,16 @@ static const struct snd_soc_dapm_route audio_map[] = {
{"FM Transmitter", NULL, "LLOUT"},
{"FM Transmitter", NULL, "RLOUT"},
- {"DMic Rate 64", NULL, "Mic Bias 2V"},
- {"Mic Bias 2V", NULL, "DMic"},
+ {"DMic Rate 64", NULL, "Mic Bias"},
+ {"Mic Bias", NULL, "DMic"},
};
static const struct snd_soc_dapm_route audio_mapb[] = {
{"b LINE2R", NULL, "MONO_LOUT"},
{"Earphone", NULL, "b HPLOUT"},
- {"LINE1L", NULL, "b Mic Bias 2.5V"},
- {"b Mic Bias 2.5V", NULL, "HS Mic"}
+ {"LINE1L", NULL, "b Mic Bias"},
+ {"b Mic Bias", NULL, "HS Mic"}
};
static const char *spk_function[] = {"Off", "On"};