diff options
| -rw-r--r-- | sound/soc/codecs/tas2562.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/sound/soc/codecs/tas2562.c b/sound/soc/codecs/tas2562.c index cdd695c3807e..0b8644ad74f1 100644 --- a/sound/soc/codecs/tas2562.c +++ b/sound/soc/codecs/tas2562.c @@ -472,10 +472,18 @@ static int tas2562_volume_control_put(struct snd_kcontrol *kcontrol, { struct snd_soc_component *component = snd_kcontrol_chip(kcontrol); struct tas2562_data *tas2562 = snd_soc_component_get_drvdata(component); - int ret; + int ret, index; u32 reg_val; - reg_val = float_vol_db_lookup[ucontrol->value.integer.value[0]/2]; + if (tas2562->volume_lvl == ucontrol->value.integer.value[0]) + return 0; + + index = ucontrol->value.integer.value[0] / 2; + if (index < 0 || index >= ARRAY_SIZE(float_vol_db_lookup)) + return -EINVAL; + + reg_val = float_vol_db_lookup[index]; + /* * The device applies the 32-bit coefficient to the playback path on * the write to DVC_CFG4 (the LSB, book 0 page 2 reg 0x0F), so the @@ -502,7 +510,7 @@ static int tas2562_volume_control_put(struct snd_kcontrol *kcontrol, tas2562->volume_lvl = ucontrol->value.integer.value[0]; - return 0; + return 1; } /* Digital Volume Control. From 0 dB to -110 dB in 1 dB steps */ @@ -740,6 +748,8 @@ static int tas2562_probe(struct i2c_client *client) data->client = client; data->dev = &client->dev; data->model_id = (uintptr_t)i2c_get_match_data(client); + /* Register default is 0x40400000, this is closest */ + data->volume_lvl = (ARRAY_SIZE(float_vol_db_lookup) - 1) * 2; tas2562_parse_dt(data); |