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ASoC: max98090: add shutdown callback for max98090 

To fix pop noise when shutdown,the pop noise during shutdown
is the pmic cutoff power of codec without any notice.

Signed-off-by: jay.xu <xjq@rock-chips.com>
Signed-off-by: zhengxing <zhengxing@rock-chips.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Caesar Wang 2015-04-08 19:05:56 +08:00 committed by Mark Brown
parent c517d838eb
commit c6b424fee7
1 changed files with 17 additions and 0 deletions
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17
sound/soc/codecs/max98090.c
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@ -2605,8 +2605,24 @@ static int max98090_i2c_probe(struct i2c_client *i2c,
return ret;
}
static void max98090_i2c_shutdown(struct i2c_client *i2c)
{
struct max98090_priv *max98090 = dev_get_drvdata(&i2c->dev);
/*
* Enable volume smoothing, disable zero cross. This will cause
* a quick 40ms ramp to mute on shutdown.
*/
regmap_write(max98090->regmap,
M98090_REG_LEVEL_CONTROL, M98090_VSENN_MASK);
regmap_write(max98090->regmap,
M98090_REG_DEVICE_SHUTDOWN, 0x00);
msleep(40);
}
static int max98090_i2c_remove(struct i2c_client *client)
{
max98090_i2c_shutdown(client);
snd_soc_unregister_codec(&client->dev);
return 0;
}
@ -2696,6 +2712,7 @@ static struct i2c_driver max98090_i2c_driver = {
.acpi_match_table = ACPI_PTR(max98090_acpi_match),
},
.probe = max98090_i2c_probe,
.shutdown = max98090_i2c_shutdown,
.remove = max98090_i2c_remove,
.id_table = max98090_i2c_id,
};