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[PATCH v2 4/9] thermal: rockchip: improve the conversion function

Started byCaesar Wang <wxt@rock-chips.com>
First post2015-11-05 06:20 +0100
Last post2015-11-07 15:50 +0100
Articles 3 — 3 participants

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  [PATCH v2 4/9] thermal: rockchip: improve the conversion function Caesar Wang <wxt@rock-chips.com> - 2015-11-05 06:20 +0100
    Re: [PATCH v2 4/9] thermal: rockchip: improve the conversion function Eduardo Valentin <edubezval@gmail.com> - 2015-11-06 20:10 +0100
      Re: [PATCH v2 4/9] thermal: rockchip: improve the conversion function Caesar Wang <caesar.upstream@gmail.com> - 2015-11-07 15:50 +0100

#1262921 — [PATCH v2 4/9] thermal: rockchip: improve the conversion function

FromCaesar Wang <wxt@rock-chips.com>
Date2015-11-05 06:20 +0100
Subject[PATCH v2 4/9] thermal: rockchip: improve the conversion function
Message-ID<qrl7Q-2g9-23@gated-at.bofh.it>
We should make the conversion table in as a parameter since the different
SoCs have the different conversionion table.

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

Changes in v2:
- make the conversion table in as a parameter both code_to_temp
  and temp_to_code function.
Series-changes: 1
- As Dmitry comment, make the conversion table in as a parameter.

Changes in v1: None

 drivers/thermal/rockchip_thermal.c | 82 +++++++++++++++++++++++++-------------
 1 file changed, 55 insertions(+), 27 deletions(-)

diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
index bdf7063..e828f18 100644
--- a/drivers/thermal/rockchip_thermal.c
+++ b/drivers/thermal/rockchip_thermal.c
@@ -58,6 +58,16 @@ enum sensor_id {
  */
 #define SOC_MAX_SENSORS	2
 
+struct chip_tsadc_table {
+	const struct tsadc_table *id;
+
+	/* the array table size*/
+	unsigned int length;
+
+	/* that analogic mask data */
+	unsigned long data_mask;
+};
+
 struct rockchip_tsadc_chip {
 	/* The sensor id of chip correspond to the ADC channel */
 	int chn_id[SOC_MAX_SENSORS];
@@ -74,9 +84,14 @@ struct rockchip_tsadc_chip {
 	void (*control)(void __iomem *reg, bool on);
 
 	/* Per-sensor methods */
-	int (*get_temp)(int chn, void __iomem *reg, int *temp);
-	void (*set_tshut_temp)(int chn, void __iomem *reg, long temp);
+	int (*get_temp)(struct chip_tsadc_table table,
+			int chn, void __iomem *reg, int *temp);
+	void (*set_tshut_temp)(struct chip_tsadc_table table,
+			       int chn, void __iomem *reg, long temp);
 	void (*set_tshut_mode)(int chn, void __iomem *reg, enum tshut_mode m);
+
+	/* Per-table methods */
+	struct chip_tsadc_table table;
 };
 
 struct rockchip_thermal_sensor {
@@ -172,21 +187,22 @@ static const struct tsadc_table v2_code_table[] = {
 	{3421, 125000},
 };
 
-static u32 rk_tsadcv2_temp_to_code(long temp)
+static u32 rk_tsadcv2_temp_to_code(struct chip_tsadc_table table,
+				   long temp)
 {
 	int high, low, mid;
 
 	low = 0;
-	high = ARRAY_SIZE(v2_code_table) - 1;
+	high = table.length - 1;
 	mid = (high + low) / 2;
 
-	if (temp < v2_code_table[low].temp || temp > v2_code_table[high].temp)
+	if (temp < table.id[low].temp || temp > table.id[high].temp)
 		return 0;
 
 	while (low <= high) {
-		if (temp == v2_code_table[mid].temp)
-			return v2_code_table[mid].code;
-		else if (temp < v2_code_table[mid].temp)
+		if (temp == table.id[mid].temp)
+			return table.id[mid].code;
+		else if (temp < table.id[mid].temp)
 			high = mid - 1;
 		else
 			low = mid + 1;
@@ -196,25 +212,26 @@ static u32 rk_tsadcv2_temp_to_code(long temp)
 	return 0;
 }
 
-static int rk_tsadcv2_code_to_temp(u32 code, int *temp)
+static int rk_tsadcv2_code_to_temp(struct chip_tsadc_table table, u32 code,
+				   int *temp)
 {
 	unsigned int low = 1;
-	unsigned int high = ARRAY_SIZE(v2_code_table) - 1;
+	unsigned int high = table.length - 1;
 	unsigned int mid = (low + high) / 2;
 	unsigned int num;
 	unsigned long denom;
 
-	BUILD_BUG_ON(ARRAY_SIZE(v2_code_table) < 2);
+	WARN_ON(table.length < 2);
 
-	code &= TSADCV2_DATA_MASK;
-	if (code < v2_code_table[high].code)
+	code &= table.data_mask;
+	if (code < table.id[high].code)
 		return -EAGAIN;		/* Incorrect reading */
 
 	while (low <= high) {
-		if (code >= v2_code_table[mid].code &&
-		    code < v2_code_table[mid - 1].code)
+		if (code >= table.id[mid].code &&
+		    code < table.id[mid - 1].code)
 			break;
-		else if (code < v2_code_table[mid].code)
+		else if (code < table.id[mid].code)
 			low = mid + 1;
 		else
 			high = mid - 1;
@@ -227,10 +244,10 @@ static int rk_tsadcv2_code_to_temp(u32 code, int *temp)
 	 * temperature between 2 table entries is linear and interpolate
 	 * to produce less granular result.
 	 */
-	num = v2_code_table[mid].temp - v2_code_table[mid - 1].temp;
-	num *= v2_code_table[mid - 1].code - code;
-	denom = v2_code_table[mid - 1].code - v2_code_table[mid].code;
-	*temp = v2_code_table[mid - 1].temp + (num / denom);
+	num = table.id[mid].temp - v2_code_table[mid - 1].temp;
+	num *= table.id[mid - 1].code - code;
+	denom = table.id[mid - 1].code - table.id[mid].code;
+	*temp = table.id[mid - 1].temp + (num / denom);
 
 	return 0;
 }
@@ -290,20 +307,22 @@ static void rk_tsadcv2_control(void __iomem *regs, bool enable)
 	writel_relaxed(val, regs + TSADCV2_AUTO_CON);
 }
 
-static int rk_tsadcv2_get_temp(int chn, void __iomem *regs, int *temp)
+static int rk_tsadcv2_get_temp(struct chip_tsadc_table table,
+			       int chn, void __iomem *regs, int *temp)
 {
 	u32 val;
 
 	val = readl_relaxed(regs + TSADCV2_DATA(chn));
 
-	return rk_tsadcv2_code_to_temp(val, temp);
+	return rk_tsadcv2_code_to_temp(table, val, temp);
 }
 
-static void rk_tsadcv2_tshut_temp(int chn, void __iomem *regs, long temp)
+static void rk_tsadcv2_tshut_temp(struct chip_tsadc_table table,
+				  int chn, void __iomem *regs, long temp)
 {
 	u32 tshut_value, val;
 
-	tshut_value = rk_tsadcv2_temp_to_code(temp);
+	tshut_value = rk_tsadcv2_temp_to_code(table, temp);
 	writel_relaxed(tshut_value, regs + TSADCV2_COMP_SHUT(chn));
 
 	/* TSHUT will be valid */
@@ -343,6 +362,12 @@ static const struct rockchip_tsadc_chip rk3288_tsadc_data = {
 	.get_temp = rk_tsadcv2_get_temp,
 	.set_tshut_temp = rk_tsadcv2_tshut_temp,
 	.set_tshut_mode = rk_tsadcv2_tshut_mode,
+
+	.table = {
+		.id = v2_code_table,
+		.length = ARRAY_SIZE(v2_code_table),
+		.data_mask = TSADCV2_DATA_MASK,
+	},
 };
 
 static const struct of_device_id of_rockchip_thermal_match[] = {
@@ -385,7 +410,8 @@ static int rockchip_thermal_get_temp(void *_sensor, int *out_temp)
 	const struct rockchip_tsadc_chip *tsadc = sensor->thermal->chip;
 	int retval;
 
-	retval = tsadc->get_temp(sensor->id, thermal->regs, out_temp);
+	retval = tsadc->get_temp(tsadc->table,
+				 sensor->id, thermal->regs, out_temp);
 	dev_dbg(&thermal->pdev->dev, "sensor %d - temp: %d, retval: %d\n",
 		sensor->id, *out_temp, retval);
 
@@ -463,7 +489,8 @@ rockchip_thermal_register_sensor(struct platform_device *pdev,
 	int error;
 
 	tsadc->set_tshut_mode(id, thermal->regs, thermal->tshut_mode);
-	tsadc->set_tshut_temp(id, thermal->regs, thermal->tshut_temp);
+	tsadc->set_tshut_temp(tsadc->table, id, thermal->regs,
+			      thermal->tshut_temp);
 
 	sensor->thermal = thermal;
 	sensor->id = id;
@@ -681,7 +708,8 @@ static int __maybe_unused rockchip_thermal_resume(struct device *dev)
 
 		thermal->chip->set_tshut_mode(id, thermal->regs,
 					      thermal->tshut_mode);
-		thermal->chip->set_tshut_temp(id, thermal->regs,
+		thermal->chip->set_tshut_temp(thermal->chip->table,
+					      id, thermal->regs,
 					      thermal->tshut_temp);
 	}
 
-- 
1.9.1

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#1264227

FromEduardo Valentin <edubezval@gmail.com>
Date2015-11-06 20:10 +0100
Message-ID<qrUyB-60-3@gated-at.bofh.it>
In reply to#1262921
Hello Caesar,

On Thu, Nov 05, 2015 at 01:18:00PM +0800, Caesar Wang wrote:
> We should make the conversion table in as a parameter since the different
> SoCs have the different conversionion table.
> 
> Signed-off-by: Caesar Wang <wxt@rock-chips.com>
> ---
> 
> Changes in v2:
> - make the conversion table in as a parameter both code_to_temp
>   and temp_to_code function.


Now it looks cleaner. Thanks.

The comments below are probably not directly on this change. You may
want to add a different patch that takes care of the suggestions that
follows.

> Series-changes: 1
> - As Dmitry comment, make the conversion table in as a parameter.
> 
> Changes in v1: None
> 
>  drivers/thermal/rockchip_thermal.c | 82 +++++++++++++++++++++++++-------------
>  1 file changed, 55 insertions(+), 27 deletions(-)
> 
> diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
> index bdf7063..e828f18 100644
> --- a/drivers/thermal/rockchip_thermal.c
> +++ b/drivers/thermal/rockchip_thermal.c
> @@ -58,6 +58,16 @@ enum sensor_id {
>   */
>  #define SOC_MAX_SENSORS	2
>  
> +struct chip_tsadc_table {
> +	const struct tsadc_table *id;
> +
> +	/* the array table size*/
> +	unsigned int length;
> +
> +	/* that analogic mask data */
> +	unsigned long data_mask;

Are you sure this need to be long?

> +};
> +
>  struct rockchip_tsadc_chip {
>  	/* The sensor id of chip correspond to the ADC channel */
>  	int chn_id[SOC_MAX_SENSORS];
> @@ -74,9 +84,14 @@ struct rockchip_tsadc_chip {
>  	void (*control)(void __iomem *reg, bool on);
>  
>  	/* Per-sensor methods */
> -	int (*get_temp)(int chn, void __iomem *reg, int *temp);
> -	void (*set_tshut_temp)(int chn, void __iomem *reg, long temp);
> +	int (*get_temp)(struct chip_tsadc_table table,
> +			int chn, void __iomem *reg, int *temp);
> +	void (*set_tshut_temp)(struct chip_tsadc_table table,
> +			       int chn, void __iomem *reg, long temp);

Temperature is currently represented as int not long in the thermal
framework. You may want to send a different patch that normalize the
temperature representation in your driver (long -> int).

>  	void (*set_tshut_mode)(int chn, void __iomem *reg, enum tshut_mode m);
> +
> +	/* Per-table methods */
> +	struct chip_tsadc_table table;
>  };
>  
>  struct rockchip_thermal_sensor {
> @@ -172,21 +187,22 @@ static const struct tsadc_table v2_code_table[] = {
>  	{3421, 125000},
>  };
>  
> -static u32 rk_tsadcv2_temp_to_code(long temp)
> +static u32 rk_tsadcv2_temp_to_code(struct chip_tsadc_table table,
> +				   long temp)

Same comment here.

>  {
>  	int high, low, mid;
>  
>  	low = 0;
> -	high = ARRAY_SIZE(v2_code_table) - 1;
> +	high = table.length - 1;
>  	mid = (high + low) / 2;
>  
> -	if (temp < v2_code_table[low].temp || temp > v2_code_table[high].temp)
> +	if (temp < table.id[low].temp || temp > table.id[high].temp)
>  		return 0;
>  
>  	while (low <= high) {
> -		if (temp == v2_code_table[mid].temp)
> -			return v2_code_table[mid].code;
> -		else if (temp < v2_code_table[mid].temp)
> +		if (temp == table.id[mid].temp)
> +			return table.id[mid].code;
> +		else if (temp < table.id[mid].temp)
>  			high = mid - 1;
>  		else
>  			low = mid + 1;
> @@ -196,25 +212,26 @@ static u32 rk_tsadcv2_temp_to_code(long temp)
>  	return 0;
>  }
>  
> -static int rk_tsadcv2_code_to_temp(u32 code, int *temp)
> +static int rk_tsadcv2_code_to_temp(struct chip_tsadc_table table, u32 code,
> +				   int *temp)

Here you are ok already.

>  {
>  	unsigned int low = 1;
> -	unsigned int high = ARRAY_SIZE(v2_code_table) - 1;
> +	unsigned int high = table.length - 1;
>  	unsigned int mid = (low + high) / 2;
>  	unsigned int num;
>  	unsigned long denom;
>  
> -	BUILD_BUG_ON(ARRAY_SIZE(v2_code_table) < 2);
> +	WARN_ON(table.length < 2);
>  
> -	code &= TSADCV2_DATA_MASK;
> -	if (code < v2_code_table[high].code)
> +	code &= table.data_mask;
> +	if (code < table.id[high].code)
>  		return -EAGAIN;		/* Incorrect reading */
>  
>  	while (low <= high) {
> -		if (code >= v2_code_table[mid].code &&
> -		    code < v2_code_table[mid - 1].code)
> +		if (code >= table.id[mid].code &&
> +		    code < table.id[mid - 1].code)
>  			break;
> -		else if (code < v2_code_table[mid].code)
> +		else if (code < table.id[mid].code)
>  			low = mid + 1;
>  		else
>  			high = mid - 1;
> @@ -227,10 +244,10 @@ static int rk_tsadcv2_code_to_temp(u32 code, int *temp)
>  	 * temperature between 2 table entries is linear and interpolate
>  	 * to produce less granular result.
>  	 */
> -	num = v2_code_table[mid].temp - v2_code_table[mid - 1].temp;
> -	num *= v2_code_table[mid - 1].code - code;
> -	denom = v2_code_table[mid - 1].code - v2_code_table[mid].code;
> -	*temp = v2_code_table[mid - 1].temp + (num / denom);
> +	num = table.id[mid].temp - v2_code_table[mid - 1].temp;
> +	num *= table.id[mid - 1].code - code;
> +	denom = table.id[mid - 1].code - table.id[mid].code;
> +	*temp = table.id[mid - 1].temp + (num / denom);
>  
>  	return 0;
>  }
> @@ -290,20 +307,22 @@ static void rk_tsadcv2_control(void __iomem *regs, bool enable)
>  	writel_relaxed(val, regs + TSADCV2_AUTO_CON);
>  }
>  
> -static int rk_tsadcv2_get_temp(int chn, void __iomem *regs, int *temp)
> +static int rk_tsadcv2_get_temp(struct chip_tsadc_table table,
> +			       int chn, void __iomem *regs, int *temp)
>  {
>  	u32 val;
>  
>  	val = readl_relaxed(regs + TSADCV2_DATA(chn));
>  
> -	return rk_tsadcv2_code_to_temp(val, temp);
> +	return rk_tsadcv2_code_to_temp(table, val, temp);
>  }
>  
> -static void rk_tsadcv2_tshut_temp(int chn, void __iomem *regs, long temp)
> +static void rk_tsadcv2_tshut_temp(struct chip_tsadc_table table,
> +				  int chn, void __iomem *regs, long temp)

Here needs fixing.


BR,

Eduardo Valentin
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#1264854

FromCaesar Wang <caesar.upstream@gmail.com>
Date2015-11-07 15:50 +0100
Message-ID<qscYy-3yx-5@gated-at.bofh.it>
In reply to#1264227
Hello Eduardo,

在 2015年11月07日 03:00, Eduardo Valentin 写道:
> Hello Caesar,
>
> On Thu, Nov 05, 2015 at 01:18:00PM +0800, Caesar Wang wrote:
>> We should make the conversion table in as a parameter since the different
>> SoCs have the different conversionion table.
>>
>> Signed-off-by: Caesar Wang <wxt@rock-chips.com>
>> ---
>>
>> Changes in v2:
>> - make the conversion table in as a parameter both code_to_temp
>>    and temp_to_code function.
>
> Now it looks cleaner. Thanks.
>
> The comments below are probably not directly on this change. You may
> want to add a different patch that takes care of the suggestions that
> follows.

Okay, I will send a another patch to fix it.
Thanks your reviewing this patch.




>> Series-changes: 1
>> - As Dmitry comment, make the conversion table in as a parameter.
>>
>> Changes in v1: None
>>
>>   drivers/thermal/rockchip_thermal.c | 82 +++++++++++++++++++++++++-------------
>>   1 file changed, 55 insertions(+), 27 deletions(-)
>>
>> diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
>> index bdf7063..e828f18 100644
>> --- a/drivers/thermal/rockchip_thermal.c
>> +++ b/drivers/thermal/rockchip_thermal.c
>> @@ -58,6 +58,16 @@ enum sensor_id {
>>    */
>>   #define SOC_MAX_SENSORS	2
>>   
>> +struct chip_tsadc_table {
>> +	const struct tsadc_table *id;
>> +
>> +	/* the array table size*/
>> +	unsigned int length;
>> +
>> +	/* that analogic mask data */
>> +	unsigned long data_mask;
> Are you sure this need to be long?

Seem.....we should mark the 'unsigned int  or u32'.


>> +};
>> +
>>   struct rockchip_tsadc_chip {
>>   	/* The sensor id of chip correspond to the ADC channel */
>>   	int chn_id[SOC_MAX_SENSORS];
>> @@ -74,9 +84,14 @@ struct rockchip_tsadc_chip {
>>   	void (*control)(void __iomem *reg, bool on);
>>   
>>   	/* Per-sensor methods */
>> -	int (*get_temp)(int chn, void __iomem *reg, int *temp);
>> -	void (*set_tshut_temp)(int chn, void __iomem *reg, long temp);
>> +	int (*get_temp)(struct chip_tsadc_table table,
>> +			int chn, void __iomem *reg, int *temp);
>> +	void (*set_tshut_temp)(struct chip_tsadc_table table,
>> +			       int chn, void __iomem *reg, long temp);
> Temperature is currently represented as int not long in the thermal
> framework. You may want to send a different patch that normalize the
> temperature representation in your driver (long -> int).

Okay

>>   	void (*set_tshut_mode)(int chn, void __iomem *reg, enum tshut_mode m);
>> +
>> +	/* Per-table methods */
>> +	struct chip_tsadc_table table;
>>   };
>>   
>>   struct rockchip_thermal_sensor {
>> @@ -172,21 +187,22 @@ static const struct tsadc_table v2_code_table[] = {
>>   	{3421, 125000},
>>   };
>>   
>> -static u32 rk_tsadcv2_temp_to_code(long temp)
>> +static u32 rk_tsadcv2_temp_to_code(struct chip_tsadc_table table,
>> +				   long temp)
> Same comment here.

Okay
>>   {
>>   	int high, low, mid;
>>   
>>   	low = 0;
>> -	high = ARRAY_SIZE(v2_code_table) - 1;
>> +	high = table.length - 1;
>>   	mid = (high + low) / 2;
>>   
>> -	if (temp < v2_code_table[low].temp || temp > v2_code_table[high].temp)
>> +	if (temp < table.id[low].temp || temp > table.id[high].temp)
>>   		return 0;
>>   
>>   	while (low <= high) {
>> -		if (temp == v2_code_table[mid].temp)
>> -			return v2_code_table[mid].code;
>> -		else if (temp < v2_code_table[mid].temp)
>> +		if (temp == table.id[mid].temp)
>> +			return table.id[mid].code;
>> +		else if (temp < table.id[mid].temp)
>>   			high = mid - 1;
>>   		else
>>   			low = mid + 1;
>> @@ -196,25 +212,26 @@ static u32 rk_tsadcv2_temp_to_code(long temp)
>>   	return 0;
>>   }
>>   
>> -static int rk_tsadcv2_code_to_temp(u32 code, int *temp)
>> +static int rk_tsadcv2_code_to_temp(struct chip_tsadc_table table, u32 code,
>> +				   int *temp)
> Here you are ok already.
>
>>   {
>>   	unsigned int low = 1;
>> -	unsigned int high = ARRAY_SIZE(v2_code_table) - 1;
>> +	unsigned int high = table.length - 1;
>>   	unsigned int mid = (low + high) / 2;
>>   	unsigned int num;
>>   	unsigned long denom;
>>   
>> -	BUILD_BUG_ON(ARRAY_SIZE(v2_code_table) < 2);
>> +	WARN_ON(table.length < 2);
>>   
>> -	code &= TSADCV2_DATA_MASK;
>> -	if (code < v2_code_table[high].code)
>> +	code &= table.data_mask;
>> +	if (code < table.id[high].code)
>>   		return -EAGAIN;		/* Incorrect reading */
>>   
>>   	while (low <= high) {
>> -		if (code >= v2_code_table[mid].code &&
>> -		    code < v2_code_table[mid - 1].code)
>> +		if (code >= table.id[mid].code &&
>> +		    code < table.id[mid - 1].code)
>>   			break;
>> -		else if (code < v2_code_table[mid].code)
>> +		else if (code < table.id[mid].code)
>>   			low = mid + 1;
>>   		else
>>   			high = mid - 1;
>> @@ -227,10 +244,10 @@ static int rk_tsadcv2_code_to_temp(u32 code, int *temp)
>>   	 * temperature between 2 table entries is linear and interpolate
>>   	 * to produce less granular result.
>>   	 */
>> -	num = v2_code_table[mid].temp - v2_code_table[mid - 1].temp;
>> -	num *= v2_code_table[mid - 1].code - code;
>> -	denom = v2_code_table[mid - 1].code - v2_code_table[mid].code;
>> -	*temp = v2_code_table[mid - 1].temp + (num / denom);
>> +	num = table.id[mid].temp - v2_code_table[mid - 1].temp;
>> +	num *= table.id[mid - 1].code - code;
>> +	denom = table.id[mid - 1].code - table.id[mid].code;
>> +	*temp = table.id[mid - 1].temp + (num / denom);
>>   
>>   	return 0;
>>   }
>> @@ -290,20 +307,22 @@ static void rk_tsadcv2_control(void __iomem *regs, bool enable)
>>   	writel_relaxed(val, regs + TSADCV2_AUTO_CON);
>>   }
>>   
>> -static int rk_tsadcv2_get_temp(int chn, void __iomem *regs, int *temp)
>> +static int rk_tsadcv2_get_temp(struct chip_tsadc_table table,
>> +			       int chn, void __iomem *regs, int *temp)
>>   {
>>   	u32 val;
>>   
>>   	val = readl_relaxed(regs + TSADCV2_DATA(chn));
>>   
>> -	return rk_tsadcv2_code_to_temp(val, temp);
>> +	return rk_tsadcv2_code_to_temp(table, val, temp);
>>   }
>>   
>> -static void rk_tsadcv2_tshut_temp(int chn, void __iomem *regs, long temp)
>> +static void rk_tsadcv2_tshut_temp(struct chip_tsadc_table table,
>> +				  int chn, void __iomem *regs, long temp)
> Here needs fixing.

Okay.

>
> BR,
>
> Eduardo Valentin
>
> _______________________________________________
> Linux-rockchip mailing list
> Linux-rockchip@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-rockchip

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