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@everest-semi.com --- 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 4f10ab5394ec..d209865be9e1 100755 --- a/sound/soc/codecs/es8326.c +++ b/sound/soc/codecs/es8326.c @@ -327,11 +327,29 @@ 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, };