Heiko,
在 2015年04月08日 17:25, Heiko Stübner 写道:
Hi Caesar,
Am Mittwoch, 8. April 2015, 16:52:08 schrieb Caesar Wang:
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@xxxxxxxxxxxxxx>
Signed-off-by: zhengxing <zhengxing@xxxxxxxxxxxxxx>
Signed-off-by: Caesar Wang <wxt@xxxxxxxxxxxxxx>
Serien-cc: linux-kernel@xxxxxxxxxxxxxxx
Serien-cc: devicetree@xxxxxxxxxxxxxxx
Serien-cc: dianders@xxxxxxxxxxxx
---
sound/soc/codecs/max98090.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/sound/soc/codecs/max98090.c b/sound/soc/codecs/max98090.c
index b112b1c..066954a0 100644
--- a/sound/soc/codecs/max98090.c
+++ b/sound/soc/codecs/max98090.c
@@ -2611,6 +2611,22 @@ static int max98090_i2c_remove(struct i2c_client
*client) return 0;
}
+static void max98090_i2c_shutdown(struct i2c_client *i2c)
+{
+ struct max98090_priv *max98090 = dev_get_drvdata(&i2c->dev);
+
+ dev_info(&i2c->dev, "shut down device\n");
is this dev_info really necessary? dev_dbg might be better, or leave it out
completely, as it doesn't really provide any additional benefit.
As Mark suggestion, I will remove it.
+
+ /* Enable volume smoothing, disable zero cross. This will cause
+ * a quick 40ms ramp to mute on shutdown.
+ */
Comment style is off ... should be
/*
* Enable volume smoothing, disable zero cross. This will cause
* a quick 40ms ramp to mute on shutdown.
*/
Done
+ regmap_write(max98090->regmap,
+ M98090_REG_LEVEL_CONTROL, M98090_VSENN_MASK);
+ regmap_write(max98090->regmap,
+ M98090_REG_DEVICE_SHUTDOWN, 0x00);
+ msleep(40);
+}
+
#ifdef CONFIG_PM
static int max98090_runtime_resume(struct device *dev)
{
@@ -2697,6 +2713,7 @@ static struct i2c_driver max98090_i2c_driver = {
},
.probe = max98090_i2c_probe,
.remove = max98090_i2c_remove,
+ .shutdown = max98090_i2c_shutdown,
.id_table = max98090_i2c_id,
};
--
**************************************************************************************
王晓腾 Caesar Wang
系统产品三部 Product R&D Dept.III
福州瑞芯微电子有限公司 Fuzhou Rockchip Electronics Co.Ltd
地址：福建省福州市铜盘路软件大道89号软件园A区18号楼 （福州总部）
深圳南山区科技中一路万利达大厦21层 （深圳分公司）
Addr： NO.18 Building, A District, Fuzhou Software Park,Gulou District,Fuzhou, Fujian,China(Fuzhou Headquarters)
21F,Malata Building,Kejizhongyi Avenue,Nanshan District,Shenzhen (Shenzhen Office)
Tel：+86-591-83991906/07 - 8221
Mobile:+86 15059456742
E-mail : wxt@xxxxxxxxxxxxxx
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