diff options
| author | Bard Liao <bardliao@realtek.com> | 2016-04-26 18:07:10 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-04-26 11:11:08 +0100 |
| commit | 3c9e014c442caefa14c71494ca4473121007f60f (patch) | |
| tree | f35b47dfb9c3aeeb14afbed3fe14005b7dbe7e49 /sound/soc/codecs/rt298.c | |
| parent | f55532a0c0b8bb6148f4e07853b876ef73bc69ca (diff) | |
ASoC: rt298: reset AD dilter is there is no MCLK
rt298 need to reset AD filter and the ADC settings will take effort.
Signed-off-by: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs/rt298.c')
| -rw-r--r-- | sound/soc/codecs/rt298.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/sound/soc/codecs/rt298.c b/sound/soc/codecs/rt298.c index f0e6c06e89ac..178b1cc22e05 100644 --- a/sound/soc/codecs/rt298.c +++ b/sound/soc/codecs/rt298.c @@ -481,6 +481,26 @@ static int rt298_adc_event(struct snd_soc_dapm_widget *w, snd_soc_update_bits(codec, VERB_CMD(AC_VERB_SET_AMP_GAIN_MUTE, nid, 0), 0x7080, 0x7000); + /* If MCLK doesn't exist, reset AD filter */ + if (!(snd_soc_read(codec, RT298_VAD_CTRL) & 0x200)) { + pr_info("NO MCLK\n"); + switch (nid) { + case RT298_ADC_IN1: + snd_soc_update_bits(codec, + RT298_D_FILTER_CTRL, 0x2, 0x2); + mdelay(10); + snd_soc_update_bits(codec, + RT298_D_FILTER_CTRL, 0x2, 0x0); + break; + case RT298_ADC_IN2: + snd_soc_update_bits(codec, + RT298_D_FILTER_CTRL, 0x4, 0x4); + mdelay(10); + snd_soc_update_bits(codec, + RT298_D_FILTER_CTRL, 0x4, 0x0); + break; + } + } break; case SND_SOC_DAPM_PRE_PMD: snd_soc_update_bits(codec, |