rt298 need to reset AD filter and the ADC settings will take effort.
Signed-off-by: Bard Liao <bardliao@xxxxxxxxxxx>
---
sound/soc/codecs/rt298.c | 20 ++++++++++++++++++++
sound/soc/codecs/rt298.h | 2 ++
2 files changed, 22 insertions(+)
diff --git a/sound/soc/codecs/rt298.c b/sound/soc/codecs/rt298.c
index f0e6c06..178b1cc 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,
diff --git a/sound/soc/codecs/rt298.h b/sound/soc/codecs/rt298.h
index d66f884..3638f3d 100644
--- a/sound/soc/codecs/rt298.h
+++ b/sound/soc/codecs/rt298.h
@@ -137,6 +137,7 @@
#define RT298_A_BIAS_CTRL2 0x02
#define RT298_POWER_CTRL1 0x03
#define RT298_A_BIAS_CTRL3 0x04
+#define RT298_D_FILTER_CTRL 0x05
#define RT298_POWER_CTRL2 0x08
#define RT298_I2S_CTRL1 0x09
#define RT298_I2S_CTRL2 0x0a
@@ -148,6 +149,7 @@
#define RT298_IRQ_CTRL 0x33
#define RT298_WIND_FILTER_CTRL 0x46
#define RT298_PLL_CTRL1 0x49
+#define RT298_VAD_CTRL 0x4e
#define RT298_CBJ_CTRL1 0x4f
#define RT298_CBJ_CTRL2 0x50
#define RT298_PLL_CTRL 0x63
--
1.8.1.1.439.g50a6b54
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