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@xxxxxxxxxxxxxxxx>
---
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 51ca17b779c2..d665fdbfc94f 100755
--- 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,
};
--
2.17.1
