[alsa-devel] [PATCH 3/9] ASoC: dwc: add quirk to override COMP_PARAM_1 register

[Alex Deucher]

From: Maruthi Srinivas Bayyavarapu <Maruthi.Bayyavarapu at amd.com>

DWC for capture in ACP 2.x IP reports playback and capture capabilities
though it supports only capture. Added a quirk to override default value
to represent capture capability only.

Signed-off-by: Maruthi Bayyavarapu <maruthi.bayyavarapu at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 include/sound/designware_i2s.h | 1 +
 sound/soc/dwc/designware_i2s.c | 4 ++++
 2 files changed, 5 insertions(+)

diff --git a/include/sound/designware_i2s.h b/include/sound/designware_i2s.h
index e0bb458..5681855 100644
--- a/include/sound/designware_i2s.h
+++ b/include/sound/designware_i2s.h
@@ -46,6 +46,7 @@ struct i2s_platform_data {
 	u32 snd_rates;
 
 	#define DW_I2S_QUIRK_COMP_REG_OFFSET	(1 << 0)
+	#define DW_I2S_QUIRK_COMP_PARAM1	(1 << 1)
 	unsigned int quirks;
 	unsigned int i2s_reg_comp1;
 	unsigned int i2s_reg_comp2;
diff --git a/sound/soc/dwc/designware_i2s.c b/sound/soc/dwc/designware_i2s.c
index 825a1f4..ce664c2 100644
--- a/sound/soc/dwc/designware_i2s.c
+++ b/sound/soc/dwc/designware_i2s.c
@@ -500,6 +500,10 @@ static int dw_configure_dai(struct dw_i2s_dev *dev,
 	u32 comp2 = i2s_read_reg(dev->i2s_base, dev->i2s_reg_comp2);
 	u32 idx;
 
+	if (dev->capability & DWC_I2S_RECORD &&
+			dev->quirks & DW_I2S_QUIRK_COMP_PARAM1)
+		comp1 = comp1 & ~BIT(5);
+
 	if (COMP1_TX_ENABLED(comp1)) {
 		dev_dbg(dev->dev, " designware: play supported\n");
 		idx = COMP1_TX_WORDSIZE_0(comp1);
-- 
2.5.0