tlv320aic32x doesn't have a dedicated MIC input, it has a MICBIAS pin instead, which is used to provide power to an external microphone.

This means one can enable this MICBIAS pin for any input configuration of INX_L and INX_R.

For this reason it's not possible to add this as a DAPM event since we lack the possibility to associate it to a DAPM route. So we use platform data totell the device whether we are connecting a microphone or not. --- sound/soc/codecs/tlv320aic32x4.c | 6 +++--- sound/soc/codecs/tlv320aic32x4.h | 1 + 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/sound/soc/codecs/tlv320aic32x4.c b/sound/soc/codecs/tlv320aic32x4.c index e93b9d1..f260e60 100644 --- a/sound/soc/codecs/tlv320aic32x4.c +++ b/sound/soc/codecs/tlv320aic32x4.c @@ -208,7 +208,6 @@ static const struct snd_soc_dapm_widget aic32x4_dapm_widgets[] = { ARRAY_SIZE(right_input_mixer_controls)), SND_SOC_DAPM_ADC("Left ADC", "Left Capture", AIC32X4_ADCSETUP, 7, 0), SND_SOC_DAPM_ADC("Right ADC", "Right Capture", AIC32X4_ADCSETUP, 6, 0), - SND_SOC_DAPM_MICBIAS("Mic Bias", AIC32X4_MICBIAS, 6, 0),

SND_SOC_DAPM_OUTPUT("HPL"), SND_SOC_DAPM_OUTPUT("HPR"), @@ -659,8 +658,9 @@ static int aic32x4_probe(struct snd_soc_codec *codec)

/* Power platform configuration */ if (aic32x4->power_cfg & AIC32X4_PWR_MICBIAS_2075_LDOIN) { - snd_soc_write(codec, AIC32X4_MICBIAS, AIC32X4_MICBIAS_LDOIN | - AIC32X4_MICBIAS_2075V); + snd_soc_write(codec, AIC32X4_MICBIAS, + AIC32X4_MICBIAS_ON | AIC32X4_MICBIAS_LDOIN | + AIC32X4_MICBIAS_2075V); } if (aic32x4->power_cfg & AIC32X4_PWR_AVDD_DVDD_WEAK_DISABLE) { snd_soc_write(codec, AIC32X4_PWRCFG, AIC32X4_AVDDWEAKDISABLE); diff --git a/sound/soc/codecs/tlv320aic32x4.h b/sound/soc/codecs/tlv320aic32x4.h index aae2b24..7b9ed7e 100644 --- a/sound/soc/codecs/tlv320aic32x4.h +++ b/sound/soc/codecs/tlv320aic32x4.h @@ -113,6 +113,7 @@

#define AIC32X4_PLLCLKIN 0x03

+#define AIC32X4_MICBIAS_ON 0x40 #define AIC32X4_MICBIAS_LDOIN 0x08 #define AIC32X4_MICBIAS_2075V 0x60