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ASoC: sgtl5000: Fix maximum value for microphone gain

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sgtl5000 microphone gain only has 2 bits of resolution, so maximum value is 3.

From Eric Nelson:
"We also found that for the microphones we have here (commodity PC boom mics) a
default value of 2 for the gain gives the best results."

So change the default microphone gain as well.

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Fabio Estevam 2012-12-23 15:45:31 -02:00 committed by Mark Brown
parent a49f0d1ea3
commit b50684da6c
1 changed files with 2 additions and 2 deletions
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4
sound/soc/codecs/sgtl5000.c
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@ -401,7 +401,7 @@ static const struct snd_kcontrol_new sgtl5000_snd_controls[] = {
5, 1, 0),
SOC_SINGLE_TLV("Mic Volume", SGTL5000_CHIP_MIC_CTRL,
0, 4, 0, mic_gain_tlv),
0, 3, 0, mic_gain_tlv),
};
/* mute the codec used by alsa core */
@ -1344,7 +1344,7 @@ static int sgtl5000_probe(struct snd_soc_codec *codec)
SGTL5000_HP_ZCD_EN |
SGTL5000_ADC_ZCD_EN);
snd_soc_write(codec, SGTL5000_CHIP_MIC_CTRL, 0);
snd_soc_write(codec, SGTL5000_CHIP_MIC_CTRL, 2);
/*
* disable DAP