diff options
| -rw-r--r-- | Documentation/devicetree/bindings/sound/qcom,msm8916-wcd-analog.txt | 1 | ||||
| -rw-r--r-- | sound/soc/codecs/msm8916-wcd-analog.c | 27 |
2 files changed, 22 insertions, 6 deletions
diff --git a/Documentation/devicetree/bindings/sound/qcom,msm8916-wcd-analog.txt b/Documentation/devicetree/bindings/sound/qcom,msm8916-wcd-analog.txt index ccb401cfef9d..05b67a1d4851 100644 --- a/Documentation/devicetree/bindings/sound/qcom,msm8916-wcd-analog.txt +++ b/Documentation/devicetree/bindings/sound/qcom,msm8916-wcd-analog.txt @@ -33,6 +33,7 @@ Required properties - vdd-micbias-supply: phandle of VDD_MICBIAS supply's regulator DT node. Optional Properties: +- qcom,micbias-lvl: Voltage (mV) for Mic Bias - qcom,micbias1-ext-cap: boolean, present if micbias1 has external capacitor connected. - qcom,micbias2-ext-cap: boolean, present if micbias2 has external capacitor diff --git a/sound/soc/codecs/msm8916-wcd-analog.c b/sound/soc/codecs/msm8916-wcd-analog.c index a0de3e7204d5..8633524b1961 100644 --- a/sound/soc/codecs/msm8916-wcd-analog.c +++ b/sound/soc/codecs/msm8916-wcd-analog.c @@ -93,8 +93,12 @@ #define MICB_1_EN_TX3_GND_SEL_TX_GND 0 #define CDC_A_MICB_1_VAL (0xf141) +#define MICB_MIN_VAL 1600 +#define MICB_STEP_SIZE 50 +#define MICB_VOLTAGE_REGVAL(v) ((v - MICB_MIN_VAL)/MICB_STEP_SIZE) #define MICB_1_VAL_MICB_OUT_VAL_MASK GENMASK(7, 3) #define MICB_1_VAL_MICB_OUT_VAL_V2P70V ((0x16) << 3) +#define MICB_1_VAL_MICB_OUT_VAL_V1P80V ((0x4) << 3) #define CDC_A_MICB_1_CTL (0xf142) #define MICB_1_CTL_CFILT_REF_SEL_MASK BIT(1) @@ -225,6 +229,7 @@ struct pm8916_wcd_analog_priv { struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)]; unsigned int micbias1_cap_mode; unsigned int micbias2_cap_mode; + unsigned int micbias_mv; }; static const char *const adc2_mux_text[] = { "ZERO", "INP2", "INP3" }; @@ -265,18 +270,25 @@ static const struct snd_kcontrol_new pm8916_wcd_analog_snd_controls[] = { static void pm8916_wcd_analog_micbias_enable(struct snd_soc_codec *codec) { + struct pm8916_wcd_analog_priv *wcd = snd_soc_codec_get_drvdata(codec); + snd_soc_update_bits(codec, CDC_A_MICB_1_CTL, MICB_1_CTL_EXT_PRECHARG_EN_MASK | MICB_1_CTL_INT_PRECHARG_BYP_MASK, MICB_1_CTL_INT_PRECHARG_BYP_EXT_PRECHRG_SEL | MICB_1_CTL_EXT_PRECHARG_EN_ENABLE); - snd_soc_write(codec, CDC_A_MICB_1_VAL, MICB_1_VAL_MICB_OUT_VAL_V2P70V); - /* - * Special headset needs MICBIAS as 2.7V so wait for - * 50 msec for the MICBIAS to reach 2.7 volts. - */ - msleep(50); + if (wcd->micbias_mv) { + snd_soc_write(codec, CDC_A_MICB_1_VAL, + MICB_VOLTAGE_REGVAL(wcd->micbias_mv)); + /* + * Special headset needs MICBIAS as 2.7V so wait for + * 50 msec for the MICBIAS to reach 2.7 volts. + */ + if (wcd->micbias_mv >= 2700) + msleep(50); + } + snd_soc_update_bits(codec, CDC_A_MICB_1_CTL, MICB_1_CTL_EXT_PRECHARG_EN_MASK | MICB_1_CTL_INT_PRECHARG_BYP_MASK, 0); @@ -795,6 +807,9 @@ static int pm8916_wcd_analog_parse_dt(struct device *dev, else priv->micbias2_cap_mode = MICB_1_EN_NO_EXT_BYP_CAP; + of_property_read_u32(dev->of_node, "qcom,micbias-lvl", + &priv->micbias_mv); + return 0; } |