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ASoC: tlv320aic3x: Mark the RESET register as volatile

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The RESET register only have one self clearing bit and it should not be
cached. If it is cached, when we sync the registers back to the chip we
will initiate a software reset as well, which is not desirable.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Peter Ujfalusi 2016-12-23 11:21:10 +02:00 • committed by Mark Brown
parent a5de5b74a5
commit 63c3194b82
1 changed files with 13 additions and 0 deletions
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13
sound/soc/codecs/tlv320aic3x.c
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@ -126,6 +126,16 @@ static const struct reg_default aic3x_reg[] = {
{ 108, 0x00 }, { 109, 0x00 },
};
static bool aic3x_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case AIC3X_RESET:
return true;
default:
return false;
}
}
static const struct regmap_config aic3x_regmap = {
.reg_bits = 8,
.val_bits = 8,
@ -133,6 +143,9 @@ static const struct regmap_config aic3x_regmap = {
.max_register = DAC_ICC_ADJ,
.reg_defaults = aic3x_reg,
.num_reg_defaults = ARRAY_SIZE(aic3x_reg),
.volatile_reg = aic3x_volatile_reg,
.cache_type = REGCACHE_RBTREE,
};