[PATCH AUTOSEL 6.6 02/20] ASoC: mediatek: mt8188: Mark AFE_DAC_CON0 register as volatile

[Sasha Levin <sashal@kernel.org>]

From: YR Yang <yr.yang@mediatek.com>

[ Upstream commit ff9f065318e17a1a97981d9e535fcfc6ce5d5614 ]

Add AFE Control Register 0 to the volatile_register.
AFE_DAC_CON0 can be modified by both the SOF and ALSA drivers.
If this register is read and written in cache mode, the cached value
might not reflect the actual value when the register is modified by
another driver. It can cause playback or capture failures. Therefore,
it is necessary to add AFE_DAC_CON0 to the list of volatile registers.

Signed-off-by: YR Yang <yr.yang@mediatek.com>
Reviewed-by: Fei Shao <fshao@chromium.org>
Reviewed-by: Trevor Wu <trevor.wu@mediatek.com>
Link: https://patch.msgid.link/20240801084326.1472-1-yr.yang@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 sound/soc/mediatek/mt8188/mt8188-afe-pcm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sound/soc/mediatek/mt8188/mt8188-afe-pcm.c b/sound/soc/mediatek/mt8188/mt8188-afe-pcm.c
index 5e14655c5617e..11f30b183520f 100644
--- a/sound/soc/mediatek/mt8188/mt8188-afe-pcm.c
+++ b/sound/soc/mediatek/mt8188/mt8188-afe-pcm.c
@@ -2748,6 +2748,7 @@ static bool mt8188_is_volatile_reg(struct device *dev, unsigned int reg)
 	case AFE_ASRC12_NEW_CON9:
 	case AFE_LRCK_CNT:
 	case AFE_DAC_MON0:
+	case AFE_DAC_CON0:
 	case AFE_DL2_CUR:
 	case AFE_DL3_CUR:
 	case AFE_DL6_CUR:
-- 
2.43.0