diff options
| -rw-r--r-- | sound/soc/codecs/tlv320aic32x4.c | 10 | ||||
| -rw-r--r-- | sound/soc/codecs/tlv320aic32x4.h | 3 |
2 files changed, 13 insertions, 0 deletions
diff --git a/sound/soc/codecs/tlv320aic32x4.c b/sound/soc/codecs/tlv320aic32x4.c index f230292..d7d0e18 100644 --- a/sound/soc/codecs/tlv320aic32x4.c +++ b/sound/soc/codecs/tlv320aic32x4.c @@ -675,6 +675,16 @@ static int aic32x4_probe(struct snd_soc_codec *codec) ARRAY_SIZE(aic32x4_snd_controls)); aic32x4_add_widgets(codec); + /* + * Workaround: for an unknown reason, the ADC needs to be powered up + * and down for the first capture to work properly. It seems related to + * a HW BUG or some kind of behavior not documented in the datasheet. + */ + tmp_reg = snd_soc_read(codec, AIC32X4_ADCSETUP); + snd_soc_write(codec, AIC32X4_ADCSETUP, tmp_reg | + AIC32X4_LADC_EN | AIC32X4_RADC_EN); + snd_soc_write(codec, AIC32X4_ADCSETUP, tmp_reg); + return 0; } diff --git a/sound/soc/codecs/tlv320aic32x4.h b/sound/soc/codecs/tlv320aic32x4.h index aae2b24..3577422 100644 --- a/sound/soc/codecs/tlv320aic32x4.h +++ b/sound/soc/codecs/tlv320aic32x4.h @@ -94,6 +94,9 @@ #define AIC32X4_WORD_LEN_24BITS 0x02 #define AIC32X4_WORD_LEN_32BITS 0x03 +#define AIC32X4_LADC_EN (1 << 7) +#define AIC32X4_RADC_EN (1 << 6) + #define AIC32X4_I2S_MODE 0x00 #define AIC32X4_DSP_MODE 0x01 #define AIC32X4_RIGHT_JUSTIFIED_MODE 0x02 |