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| author | Axel Lin <axel.lin@gmail.com> | 2011-10-19 11:00:42 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2011-10-19 13:08:39 +0100 |
| commit | dc56c5a862d1491dcdc561241371949cca6362e1 (patch) | |
| tree | 2dc8f62367be9b40b8d68dbf7c42b06a2618c119 /sound | |
| parent | 56c09aa520ad488c35c580d6f6fb1821bb4317b8 (diff) | |
| download | linux-dc56c5a862d1491dcdc561241371949cca6362e1.tar.gz linux-dc56c5a862d1491dcdc561241371949cca6362e1.tar.bz2 linux-dc56c5a862d1491dcdc561241371949cca6362e1.zip | |
ASoC: sgtl5000: Fix setting mic bias resistor
According to the datasheet:
CHIP_MIC_CTRL 0x002A
BITS[9:8] BIAS_RESISTOR
0x0 = Powerd off
0x1 = 2.0 kohm
0x2 = 4.0 kohm
0x3 = 8.0 kohm
To set mic bias resistor, we need to update bits[9:8] of
SGTL5000_CHIP_MIC_CTRL register.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/sgtl5000.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c index 91130fbc6913..3637a62ddeb4 100644 --- a/sound/soc/codecs/sgtl5000.c +++ b/sound/soc/codecs/sgtl5000.c @@ -131,16 +131,13 @@ static int mic_bias_event(struct snd_soc_dapm_widget *w, case SND_SOC_DAPM_POST_PMU: /* change mic bias resistor to 4Kohm */ snd_soc_update_bits(w->codec, SGTL5000_CHIP_MIC_CTRL, - SGTL5000_BIAS_R_4k, SGTL5000_BIAS_R_4k); + SGTL5000_BIAS_R_MASK, + SGTL5000_BIAS_R_4k << SGTL5000_BIAS_R_SHIFT); break; case SND_SOC_DAPM_PRE_PMD: - /* - * SGTL5000_BIAS_R_8k as mask to clean the two bits - * of mic bias and output impedance - */ snd_soc_update_bits(w->codec, SGTL5000_CHIP_MIC_CTRL, - SGTL5000_BIAS_R_8k, 0); + SGTL5000_BIAS_R_MASK, 0); break; } return 0; |