[PATCH] ASoC: max98090: add shutdown callback for max98090

[PATCH] ASoC: max98090: add shutdown callback for max98090

[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@rock-chips.com>
Signed-off-by: zhengxing <zhengxing@rock-chips.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>

Serien-cc: linux-kernel at vger.kernel.org
Serien-cc: devicetree at vger.kernel.org
Serien-cc: dianders at chromium.org

---

 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");
+
+	/* 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);
+}
+
 #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,
 };
 
-- 
1.9.1

[PATCH] ASoC: max98090: add shutdown callback for max98090

[Heiko Stübner]

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@rock-chips.com>
> Signed-off-by: zhengxing <zhengxing@rock-chips.com>
> Signed-off-by: Caesar Wang <wxt@rock-chips.com>
> 
> Serien-cc: linux-kernel at vger.kernel.org
> Serien-cc: devicetree at vger.kernel.org
> Serien-cc: dianders at chromium.org
> 
> ---
> 
>  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.


> +
> +	/* 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.
 */


> +	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,
>  };

[PATCH] ASoC: max98090: add shutdown callback for max98090

[Caesar Wang]

Heiko,

? 2015?04?08? 17:25, Heiko St?bner ??:
> 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@rock-chips.com>
>> Signed-off-by: zhengxing <zhengxing@rock-chips.com>
>> Signed-off-by: Caesar Wang <wxt@rock-chips.com>
>>
>> Serien-cc: linux-kernel at vger.kernel.org
>> Serien-cc: devicetree at vger.kernel.org
>> Serien-cc: dianders at chromium.org
>>
>> ---
>>
>>   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,
>>   };
>
>
>

-- 
**************************************************************************************
???    Caesar Wang
??????   Product R&D Dept.III
??????????? Fuzhou Rockchip Electronics Co.Ltd
????????????????89????A?18?? ??????
         ???????????????21? ???????
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 at rock-chips.com
***************************************************************************************
***************************************************************************************
???????????????????????????????????????????????? ??????????????
??????????????????????????????????????????????????????????????
??????????????????????????
  
IMPORTANT NOTICE: This email is from Fuzhou Rockchip Electronics Co., Ltd .The contents of this email and any attachments may
contain information that is privileged, confidential and/or exempt from disclosure under applicable law and relevant NDA.
If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the
information is STRICTLY PROHIBITED. Please immediately contact the sender as soon as possible and destroy the material
in its entirety in any format. Thank you.
***************************************************************************************

[PATCH] ASoC: max98090: add shutdown callback for max98090

[Mark Brown]

On Wed, Apr 08, 2015 at 04:52:08PM +0800, Caesar Wang wrote:

> +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");

Remove this, it's adding noise.

> +
> +	/* 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);
> +}

This is OK but equivalent code should be being added to the driver
remove path as the same thing should be happening there.
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[PATCH] ASoC: max98090: add shutdown callback for max98090

[Caesar Wang]

Mark,


? 2015?04?08? 17:50, Mark Brown ??:
> On Wed, Apr 08, 2015 at 04:52:08PM +0800, Caesar Wang wrote:
>
>> +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");
> Remove this, it's adding noise.

Done
>> +
>> +	/* 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);
>> +}
> This is OK but equivalent code should be being added to the driver
> remove path as the same thing should be happening there.
Yeah.I will fix it in v2 patch.

Thanks!

-- 
**************************************************************************************
???    Caesar Wang
??????   Product R&D Dept.III
??????????? Fuzhou Rockchip Electronics Co.Ltd
????????????????89????A?18?? ??????
         ???????????????21? ???????
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 at rock-chips.com
***************************************************************************************
***************************************************************************************
???????????????????????????????????????????????? ??????????????
??????????????????????????????????????????????????????????????
??????????????????????????
  
IMPORTANT NOTICE: This email is from Fuzhou Rockchip Electronics Co., Ltd .The contents of this email and any attachments may
contain information that is privileged, confidential and/or exempt from disclosure under applicable law and relevant NDA.
If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the
information is STRICTLY PROHIBITED. Please immediately contact the sender as soon as possible and destroy the material
in its entirety in any format. Thank you.
***************************************************************************************

[PATCH 0/1] ASoC: max98090: add shutdown callback for max98090

[Mark Brown]

On Wed, Apr 08, 2015 at 04:52:07PM +0800, Caesar Wang wrote:
> 
> Tested on veyron devices,play music then shutdown device,here carefully
> to speaker or headphone.
> 
> 
> 
> Caesar Wang (1):
>   ASoC: max98090: add shutdown callback for max98090

Don't send cover letters for single patches, if there's anything that
needs saying it should either be in the changelog or after the --- in
the mail.  If there's any content in the cover letter that's usually a
sign that the changelog on the actual patch needs improving.
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