diff options
| author |   Caesar Wang <wxt@rock-chips.com> | 2015-04-08 19:05:56 +0800 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2015-04-08 18:08:25 +0100 |
| commit | c6b424fee7511407107403d3a7c50e0756ae282e (patch) | |
| tree | 40710f733280a5b9793486786cd98dfc08f0297d /sound/soc/codecs | |
| parent | Linux 4.0-rc1 (diff) | |
| download | linux-dev-c6b424fee7511407107403d3a7c50e0756ae282e.tar.xz linux-dev-c6b424fee7511407107403d3a7c50e0756ae282e.zip | |
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>
Diffstat (limited to 'sound/soc/codecs')
| -rw-r--r-- | sound/soc/codecs/max98090.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/sound/soc/codecs/max98090.c b/sound/soc/codecs/max98090.c index b112b1c2c394..3e33ef2acf3c 100644 --- a/sound/soc/codecs/max98090.c +++ b/sound/soc/codecs/max98090.c @@ -2605,8 +2605,24 @@ err_enable: 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, }; |