diff options
| author | Alan Tull <r80115@freescale.com> | 2009-08-19 18:24:20 -0500 |
|---|---|---|
| committer | Justin Waters <justin.waters@timesys.com> | 2009-10-13 11:05:23 -0400 |
| commit | ae2c5664c0c945b03d9faea56de171cec1b03160 (patch) | |
| tree | a50573c6c1d92869adf2ed16e2d36eaef87135fc | |
| parent | bb15969be7389887c5cd706748bf7fada444b832 (diff) | |
ENGR00115754 sgtl5000: power mic bias earlier
Turn on mic bias earlier to make sure mic bias has time to
ramp up before record starts. Avoid audio artifacts.
Signed-off-by: Alan Tull <r80115@freescale.com>
| -rw-r--r-- | sound/soc/codecs/sgtl5000.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c index cb63cdd69bca..3742c0242deb 100644 --- a/sound/soc/codecs/sgtl5000.c +++ b/sound/soc/codecs/sgtl5000.c @@ -670,6 +670,11 @@ static int sgtl5000_set_bias_level(struct snd_soc_codec *codec, if (codec->bias_level == SND_SOC_BIAS_ON) break; + reg = sgtl5000_read(codec, SGTL5000_CHIP_MIC_CTRL); + reg &= ~SGTL5000_BIAS_R_MASK; + reg |= SGTL5000_BIAS_R_4k << SGTL5000_BIAS_R_SHIFT; + sgtl5000_write(codec, SGTL5000_CHIP_MIC_CTRL, reg); + /* must power up hp/line out before vag & dac to avoid pops. */ reg = sgtl5000_read(codec, SGTL5000_CHIP_ANA_POWER); @@ -679,11 +684,6 @@ static int sgtl5000_set_bias_level(struct snd_soc_codec *codec, sgtl5000_write(codec, SGTL5000_CHIP_ANA_POWER, reg); msleep(400); - reg = sgtl5000_read(codec, SGTL5000_CHIP_MIC_CTRL); - reg &= ~SGTL5000_BIAS_R_MASK; - reg |= SGTL5000_BIAS_R_4k << SGTL5000_BIAS_R_SHIFT; - sgtl5000_write(codec, SGTL5000_CHIP_MIC_CTRL, reg); - break; case SND_SOC_BIAS_PREPARE: /* partial On */ |