The driver did not have a mute function. The amplifier was brought out of
shutdown mode (hard-mute) once for ever in probe(), which was causing
clicks and pops when altering the I2C register configuration later.
This adds the digital_mute() function. The amplifier unmute in probe()
was removed.
Signed-off-by: Petr Kulhavy <petr@xxxxxxxxx>
---
v1: <initial>
v2: <no change>
sound/soc/codecs/tas571x.c | 22 ++++++++++++++++++----
1 file changed, 18 insertions(+), 4 deletions(-)
diff --git a/sound/soc/codecs/tas571x.c b/sound/soc/codecs/tas571x.c
index 2a63069..431dffa 100644
--- a/sound/soc/codecs/tas571x.c
+++ b/sound/soc/codecs/tas571x.c
@@ -171,6 +171,23 @@ static int tas571x_hw_params(struct snd_pcm_substream *substream,
TAS571X_SDI_FMT_MASK, val);
}
+static int tas571x_mute(struct snd_soc_dai *dai, int mute)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ u8 sysctl2;
+ int ret;
+
+ sysctl2 = mute ? TAS571X_SYS_CTRL_2_SDN_MASK : 0;
+
+ ret = snd_soc_update_bits(codec,
+ TAS571X_SYS_CTRL_2_REG,
+ TAS571X_SYS_CTRL_2_SDN_MASK,
+ sysctl2);
+ usleep_range(1000, 2000);
+
+ return ret;
+}
+
static int tas571x_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
@@ -218,6 +235,7 @@ static int tas571x_set_bias_level(struct snd_soc_codec *codec,
static const struct snd_soc_dai_ops tas571x_dai_ops = {
.set_fmt = tas571x_set_dai_fmt,
.hw_params = tas571x_hw_params,
+ .digital_mute = tas571x_mute,
};
static const char *const tas5711_supply_names[] = {
@@ -448,10 +466,6 @@ static int tas571x_i2c_probe(struct i2c_client *client,
if (ret)
return ret;
- ret = regmap_update_bits(priv->regmap, TAS571X_SYS_CTRL_2_REG,
- TAS571X_SYS_CTRL_2_SDN_MASK, 0);
- if (ret)
- return ret;
memcpy(&priv->codec_driver, &tas571x_codec, sizeof(priv->codec_driver));
priv->codec_driver.controls = priv->chip->controls;
--
1.9.1
--
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