diff options
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/sgtl5000.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c index c417b4ad0492..59336f6aba80 100644 --- a/sound/soc/codecs/sgtl5000.c +++ b/sound/soc/codecs/sgtl5000.c @@ -140,6 +140,7 @@ struct sgtl5000_priv { struct clk *mclk; int revision; u8 micbias_resistor; + u8 micbias_voltage; }; /* @@ -1342,6 +1343,9 @@ static int sgtl5000_probe(struct snd_soc_codec *codec) SGTL5000_BIAS_R_MASK, sgtl5000->micbias_resistor << SGTL5000_BIAS_R_SHIFT); + snd_soc_update_bits(codec, SGTL5000_CHIP_MIC_CTRL, + SGTL5000_BIAS_R_MASK, + sgtl5000->micbias_voltage << SGTL5000_BIAS_R_SHIFT); /* * disable DAP * TODO: @@ -1511,10 +1515,19 @@ static int sgtl5000_i2c_probe(struct i2c_client *client, /* default is 4Kohms */ sgtl5000->micbias_resistor = 2; } + if (!of_property_read_u32(np, + "micbias-voltage-m-volts", &value)) { + /* 1250mV => 0 */ + /* steps of 250mV */ + if ((value >= 1250) && (value <= 3000)) + sgtl5000->micbias_voltage = (value / 250) - 5; + else { + sgtl5000->micbias_voltage = 0; dev_err(&client->dev, "Unsuitable MicBias resistor\n"); } } else { + sgtl5000->micbias_voltage = 0; } } |