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authorAxel Lin <axel.lin@gmail.com>2011-10-19 11:00:42 +0800
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-10-19 13:08:39 +0100
commitdc56c5a862d1491dcdc561241371949cca6362e1 (patch)
tree2dc8f62367be9b40b8d68dbf7c42b06a2618c119 /sound
parent56c09aa520ad488c35c580d6f6fb1821bb4317b8 (diff)
downloadlinux-dc56c5a862d1491dcdc561241371949cca6362e1.tar.bz2
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.c9
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;