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Diffstat (limited to 'sound/soc/codecs/tlv320aic3x.c')
-rw-r--r--sound/soc/codecs/tlv320aic3x.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c
index 8877b74b0510..29bf8c81ae02 100644
--- a/sound/soc/codecs/tlv320aic3x.c
+++ b/sound/soc/codecs/tlv320aic3x.c
@@ -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,
};
@@ -1380,6 +1393,12 @@ static int aic3x_set_power(struct snd_soc_codec *codec, int power)
snd_soc_write(codec, AIC3X_PLL_PROGC_REG, pll_c);
snd_soc_write(codec, AIC3X_PLL_PROGD_REG, pll_d);
}
+
+ /*
+ * Delay is needed to reduce pop-noise after syncing back the
+ * registers
+ */
+ mdelay(50);
} else {
/*
* Do soft reset to this codec instance in order to clear