[d-kernel] [PATCH 28/33] ASoC: codecs: ES8326: regcache_sync error issue

[kovalev на altlinux.org]

From: Zhang Yi <zhangyi на everest-semi.com>

commit 34fa846f52f9fbef8aa262d3b39e71188e8dd884 upstream.

We modified the regmap_config members to fix cach sync error.
There are several registers that should be read-only registers.
If these registers are written while synchronizing the register values,
the codec will enter an error state.So we create es8326_writeable_register,
and set these registers to false

Signed-off-by: Zhang Yi <zhangyi на everest-semi.com>
Link: https://patch.msgid.link/20240624030607.4307-5-zhangyi@everest-semi.com
Signed-off-by: Mark Brown <broonie на kernel.org>
Signed-off-by: Vasiliy Kovalev <kovalev на altlinux.org>
---
 sound/soc/codecs/es8326.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/sound/soc/codecs/es8326.c b/sound/soc/codecs/es8326.c
index 2b02ef8ce5a50a..016cb3c7b7b57b 100644
--- a/sound/soc/codecs/es8326.c
+++ b/sound/soc/codecs/es8326.c
@@ -329,11 +329,29 @@ static bool es8326_volatile_register(struct device *dev, unsigned int reg)
 	}
 }
 
+static bool es8326_writeable_register(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case ES8326_BIAS_SW1:
+	case ES8326_BIAS_SW2:
+	case ES8326_BIAS_SW3:
+	case ES8326_BIAS_SW4:
+	case ES8326_ADC_HPFS1:
+	case ES8326_ADC_HPFS2:
+		return false;
+	default:
+		return true;
+	}
+}
+
 static const struct regmap_config es8326_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.max_register = 0xff,
+	.use_single_read = true,
+	.use_single_write = true,
 	.volatile_reg = es8326_volatile_register,
+	.writeable_reg = es8326_writeable_register,
 	.cache_type = REGCACHE_RBTREE,
 };
 
-- 
2.33.8