From: Hector Martin <marcan@xxxxxxxxx>
TX launch polarity needs to be the opposite of RX capture polarity, to
generate the right bit slot alignment.
Reviewed-by: Neal Gompa <neal@xxxxxxxxx>
Signed-off-by: Hector Martin <marcan@xxxxxxxxx>
Signed-off-by: James Calligeros <jcalligeros99@xxxxxxxxx>
---
sound/soc/codecs/tas2770.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/sound/soc/codecs/tas2770.c b/sound/soc/codecs/tas2770.c
index c4a5f4d1ce09a8e68759dd75d532d06d2a7f2d39..98b53557c0937c150d6c21ece8ede8f94afcd9f9 100644
--- a/sound/soc/codecs/tas2770.c
+++ b/sound/soc/codecs/tas2770.c
@@ -359,7 +359,7 @@ static int tas2770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
struct snd_soc_component *component = dai->component;
struct tas2770_priv *tas2770 =
snd_soc_component_get_drvdata(component);
- u8 tdm_rx_start_slot = 0, invert_fpol = 0, fpol_preinv = 0, asi_cfg_1 = 0;
+ u8 tdm_rx_start_slot = 0, invert_fpol = 0, fpol_preinv = 0, asi_cfg_1 = 0, asi_cfg_4 = 0;
int ret;
switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
@@ -376,6 +376,7 @@ static int tas2770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
fallthrough;
case SND_SOC_DAIFMT_NB_NF:
asi_cfg_1 |= TAS2770_TDM_CFG_REG1_RX_RSING;
+ asi_cfg_4 |= TAS2770_TDM_CFG_REG4_TX_EDGE_FALLING;
break;
case SND_SOC_DAIFMT_IB_IF:
invert_fpol = 1;
@@ -394,6 +395,12 @@ static int tas2770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
if (ret < 0)
return ret;
+ ret = snd_soc_component_update_bits(component, TAS2770_TDM_CFG_REG4,
+ TAS2770_TDM_CFG_REG4_TX_EDGE_FALLING,
+ asi_cfg_4);
+ if (ret < 0)
+ return ret;
+
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
tdm_rx_start_slot = 1;
--
2.48.1
