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* [PATCH 1/2] iio: cm36651:  Fix read/write integration time function.
@ 2014-02-07 11:13 Beomho Seo
  2014-02-07 11:46 ` Jaehoon Chung
  0 siblings, 1 reply; 3+ messages in thread
From: Beomho Seo @ 2014-02-07 11:13 UTC (permalink / raw)
  To: linux-iio; +Cc: Jonathan Cameron, Myungjoo Ham, Jaehoon Chung


This patch is fixed [read/write] integration time function.
cm36651 have integration time from 1 to 640 milliseconds.
But, print more then the thounsand second. when call *_integration_time attribute.
Because read_integration_time function return IIO_VAL_INT.
read integration time function is changed return IIO_VAL_INT_PLUS_MICRO;
And then .write_raw_get_fmt callback function for parse a fixed-point number from a string.
Some description is revised milliseconds unit.

This patch have been tested on exynos4 board.

Signed-off-by: Beomho Seo <beomho.seo@samsung.com>
---
 drivers/iio/light/cm36651.c |   71 ++++++++++++++++++++++++-------------------
 1 file changed, 40 insertions(+), 31 deletions(-)

diff --git a/drivers/iio/light/cm36651.c b/drivers/iio/light/cm36651.c
index 0a142af..076780c 100644
--- a/drivers/iio/light/cm36651.c
+++ b/drivers/iio/light/cm36651.c
@@ -50,10 +50,10 @@
 #define CM36651_CS_CONF2_DEFAULT_BIT	0x08

 /* CS_CONF3 channel integration time */
-#define CM36651_CS_IT1			0x00 /* Integration time 80000 usec */
-#define CM36651_CS_IT2			0x40 /* Integration time 160000 usec */
-#define CM36651_CS_IT3			0x80 /* Integration time 320000 usec */
-#define CM36651_CS_IT4			0xC0 /* Integration time 640000 usec */
+#define CM36651_CS_IT1			0x00 /* Integration time 80 msec */
+#define CM36651_CS_IT2			0x40 /* Integration time 160 msec */
+#define CM36651_CS_IT3			0x80 /* Integration time 320 msec */
+#define CM36651_CS_IT4			0xC0 /* Integration time 640 msec */

 /* PS_CONF1 command code */
 #define CM36651_PS_ENABLE		0x00
@@ -64,10 +64,10 @@
 #define CM36651_PS_PERS4		0x0C

 /* PS_CONF1 command code: integration time */
-#define CM36651_PS_IT1			0x00 /* Integration time 320 usec */
-#define CM36651_PS_IT2			0x10 /* Integration time 420 usec */
-#define CM36651_PS_IT3			0x20 /* Integration time 520 usec */
-#define CM36651_PS_IT4			0x30 /* Integration time 640 usec */
+#define CM36651_PS_IT1			0x00 /* Integration time 0.32 msec */
+#define CM36651_PS_IT2			0x10 /* Integration time 0.42 msec */
+#define CM36651_PS_IT3			0x20 /* Integration time 0.52 msec */
+#define CM36651_PS_IT4			0x30 /* Integration time 0.64 msec */

 /* PS_CONF1 command code: duty ratio */
 #define CM36651_PS_DR1			0x00 /* Duty ratio 1/80 */
@@ -93,8 +93,8 @@
 #define CM36651_CLOSE_PROXIMITY		0x32
 #define CM36651_FAR_PROXIMITY			0x33

-#define CM36651_CS_INT_TIME_AVAIL	"80000 160000 320000 640000"
-#define CM36651_PS_INT_TIME_AVAIL	"320 420 520 640"
+#define CM36651_CS_INT_TIME_AVAIL	"0.08 0.16 0.32 0.64"
+#define CM36651_PS_INT_TIME_AVAIL	"0.000320 0.000420 0.000520 0.000640"

 enum cm36651_operation_mode {
 	CM36651_LIGHT_EN,
@@ -356,30 +356,30 @@ static int cm36651_read_channel(struct cm36651_data *cm36651,
 }

 static int cm36651_read_int_time(struct cm36651_data *cm36651,
-				struct iio_chan_spec const *chan, int *val)
+				struct iio_chan_spec const *chan, int *val2)
 {
 	switch (chan->type) {
 	case IIO_LIGHT:
 		if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT1)
-			*val = 80000;
+			*val2 = 80000;
 		else if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT2)
-			*val = 160000;
+			*val2 = 160000;
 		else if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT3)
-			*val = 320000;
+			*val2 = 320000;
 		else if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT4)
-			*val = 640000;
+			*val2 = 640000;
 		else
 			return -EINVAL;
 		break;
 	case IIO_PROXIMITY:
 		if (cm36651->ps_int_time == CM36651_PS_IT1)
-			*val = 320;
+			*val2 = 320;
 		else if (cm36651->ps_int_time == CM36651_PS_IT2)
-			*val = 420;
+			*val2 = 420;
 		else if (cm36651->ps_int_time == CM36651_PS_IT3)
-			*val = 520;
+			*val2 = 520;
 		else if (cm36651->ps_int_time == CM36651_PS_IT4)
-			*val = 640;
+			*val2 = 640;
 		else
 			return -EINVAL;
 		break;
@@ -387,11 +387,11 @@ static int cm36651_read_int_time(struct cm36651_data *cm36651,
 		return -EINVAL;
 	}

-	return IIO_VAL_INT;
+	return IIO_VAL_INT_PLUS_MICRO;
 }

 static int cm36651_write_int_time(struct cm36651_data *cm36651,
-				struct iio_chan_spec const *chan, int val)
+				struct iio_chan_spec const *chan, int val2)
 {
 	struct i2c_client *client = cm36651->client;
 	struct i2c_client *ps_client = cm36651->ps_client;
@@ -399,13 +399,13 @@ static int cm36651_write_int_time(struct cm36651_data *cm36651,

 	switch (chan->type) {
 	case IIO_LIGHT:
-		if (val == 80000)
+		if (val2 == 80000)
 			int_time = CM36651_CS_IT1;
-		else if (val == 160000)
+		else if (val2 == 160000)
 			int_time = CM36651_CS_IT2;
-		else if (val == 320000)
+		else if (val2 == 320000)
 			int_time = CM36651_CS_IT3;
-		else if (val == 640000)
+		else if (val2 == 640000)
 			int_time = CM36651_CS_IT4;
 		else
 			return -EINVAL;
@@ -419,13 +419,13 @@ static int cm36651_write_int_time(struct cm36651_data *cm36651,
 		cm36651->cs_int_time[chan->address] = int_time;
 		break;
 	case IIO_PROXIMITY:
-		if (val == 320)
+		if (val2 == 320)
 			int_time = CM36651_PS_IT1;
-		else if (val == 420)
+		else if (val2 == 420)
 			int_time = CM36651_PS_IT2;
-		else if (val == 520)
+		else if (val2 == 520)
 			int_time = CM36651_PS_IT3;
-		else if (val == 640)
+		else if (val2 == 640)
 			int_time = CM36651_PS_IT4;
 		else
 			return -EINVAL;
@@ -459,7 +459,8 @@ static int cm36651_read_raw(struct iio_dev *indio_dev,
 		ret = cm36651_read_channel(cm36651, chan, val);
 		break;
 	case IIO_CHAN_INFO_INT_TIME:
-		ret = cm36651_read_int_time(cm36651, chan, val);
+		*val = 0;
+		ret = cm36651_read_int_time(cm36651, chan, val2);
 		break;
 	default:
 		ret = -EINVAL;
@@ -479,7 +480,7 @@ static int cm36651_write_raw(struct iio_dev *indio_dev,
 	int ret = -EINVAL;

 	if (mask == IIO_CHAN_INFO_INT_TIME) {
-		ret = cm36651_write_int_time(cm36651, chan, val);
+		ret = cm36651_write_int_time(cm36651, chan, val2);
 		if (ret < 0)
 			dev_err(&client->dev, "Integration time write failed\n");
 	}
@@ -487,6 +488,13 @@ static int cm36651_write_raw(struct iio_dev *indio_dev,
 	return ret;
 }

+static int cm36651_write_raw_get_fmt(struct iio_dev *indio_dev,
+				struct iio_chan_spec const *chan,
+				long mask)
+{
+	return IIO_VAL_INT_PLUS_MICRO;
+}
+
 static int cm36651_read_prox_thresh(struct iio_dev *indio_dev,
 					const struct iio_chan_spec *chan,
 					enum iio_event_type type,
@@ -614,6 +622,7 @@ static const struct iio_info cm36651_info = {
 	.driver_module		= THIS_MODULE,
 	.read_raw		= &cm36651_read_raw,
 	.write_raw		= &cm36651_write_raw,
+	.write_raw_get_fmt	= &cm36651_write_raw_get_fmt,
 	.read_event_value	= &cm36651_read_prox_thresh,
 	.write_event_value	= &cm36651_write_prox_thresh,
 	.read_event_config	= &cm36651_read_prox_event_config,
-- 
1.7.9.5

-- 
Best Regards,

^ permalink raw reply related	[flat|nested] 3+ messages in thread

* Re: [PATCH 1/2] iio: cm36651:  Fix read/write integration time function.
  2014-02-07 11:13 [PATCH 1/2] iio: cm36651: Fix read/write integration time function Beomho Seo
@ 2014-02-07 11:46 ` Jaehoon Chung
  2014-02-08 12:17   ` Jonathan Cameron
  0 siblings, 1 reply; 3+ messages in thread
From: Jaehoon Chung @ 2014-02-07 11:46 UTC (permalink / raw)
  To: Beomho Seo, linux-iio; +Cc: Jonathan Cameron, Myungjoo Ham

On 02/07/2014 08:13 PM, Beomho Seo wrote:
> 
> This patch is fixed [read/write] integration time function.
> cm36651 have integration time from 1 to 640 milliseconds.
> But, print more then the thounsand second. when call *_integration_time attribute.
> Because read_integration_time function return IIO_VAL_INT.
> read integration time function is changed return IIO_VAL_INT_PLUS_MICRO;
> And then .write_raw_get_fmt callback function for parse a fixed-point number from a string.
> Some description is revised milliseconds unit.
> 
> This patch have been tested on exynos4 board.
> 
> Signed-off-by: Beomho Seo <beomho.seo@samsung.com>
> ---
>  drivers/iio/light/cm36651.c |   71 ++++++++++++++++++++++++-------------------
>  1 file changed, 40 insertions(+), 31 deletions(-)
> 
> diff --git a/drivers/iio/light/cm36651.c b/drivers/iio/light/cm36651.c
> index 0a142af..076780c 100644
> --- a/drivers/iio/light/cm36651.c
> +++ b/drivers/iio/light/cm36651.c
> @@ -50,10 +50,10 @@
>  #define CM36651_CS_CONF2_DEFAULT_BIT	0x08
> 
>  /* CS_CONF3 channel integration time */
> -#define CM36651_CS_IT1			0x00 /* Integration time 80000 usec */
> -#define CM36651_CS_IT2			0x40 /* Integration time 160000 usec */
> -#define CM36651_CS_IT3			0x80 /* Integration time 320000 usec */
> -#define CM36651_CS_IT4			0xC0 /* Integration time 640000 usec */
> +#define CM36651_CS_IT1			0x00 /* Integration time 80 msec */
> +#define CM36651_CS_IT2			0x40 /* Integration time 160 msec */
> +#define CM36651_CS_IT3			0x80 /* Integration time 320 msec */
> +#define CM36651_CS_IT4			0xC0 /* Integration time 640 msec */
> 
>  /* PS_CONF1 command code */
>  #define CM36651_PS_ENABLE		0x00
> @@ -64,10 +64,10 @@
>  #define CM36651_PS_PERS4		0x0C
> 
>  /* PS_CONF1 command code: integration time */
> -#define CM36651_PS_IT1			0x00 /* Integration time 320 usec */
> -#define CM36651_PS_IT2			0x10 /* Integration time 420 usec */
> -#define CM36651_PS_IT3			0x20 /* Integration time 520 usec */
> -#define CM36651_PS_IT4			0x30 /* Integration time 640 usec */
> +#define CM36651_PS_IT1			0x00 /* Integration time 0.32 msec */
> +#define CM36651_PS_IT2			0x10 /* Integration time 0.42 msec */
> +#define CM36651_PS_IT3			0x20 /* Integration time 0.52 msec */
> +#define CM36651_PS_IT4			0x30 /* Integration time 0.64 msec */
> 
>  /* PS_CONF1 command code: duty ratio */
>  #define CM36651_PS_DR1			0x00 /* Duty ratio 1/80 */
> @@ -93,8 +93,8 @@
>  #define CM36651_CLOSE_PROXIMITY		0x32
>  #define CM36651_FAR_PROXIMITY			0x33
> 
> -#define CM36651_CS_INT_TIME_AVAIL	"80000 160000 320000 640000"
> -#define CM36651_PS_INT_TIME_AVAIL	"320 420 520 640"
> +#define CM36651_CS_INT_TIME_AVAIL	"0.08 0.16 0.32 0.64"
> +#define CM36651_PS_INT_TIME_AVAIL	"0.000320 0.000420 0.000520 0.000640"
> 
>  enum cm36651_operation_mode {
>  	CM36651_LIGHT_EN,
> @@ -356,30 +356,30 @@ static int cm36651_read_channel(struct cm36651_data *cm36651,
>  }
> 
>  static int cm36651_read_int_time(struct cm36651_data *cm36651,
> -				struct iio_chan_spec const *chan, int *val)
> +				struct iio_chan_spec const *chan, int *val2)
>  {
>  	switch (chan->type) {
>  	case IIO_LIGHT:
>  		if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT1)
> -			*val = 80000;
> +			*val2 = 80000;
>  		else if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT2)
> -			*val = 160000;
> +			*val2 = 160000;
>  		else if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT3)
> -			*val = 320000;
> +			*val2 = 320000;
>  		else if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT4)
> -			*val = 640000;
> +			*val2 = 640000;
>  		else
>  			return -EINVAL;
>  		break;
>  	case IIO_PROXIMITY:
>  		if (cm36651->ps_int_time == CM36651_PS_IT1)
> -			*val = 320;
> +			*val2 = 320;
>  		else if (cm36651->ps_int_time == CM36651_PS_IT2)
> -			*val = 420;
> +			*val2 = 420;
>  		else if (cm36651->ps_int_time == CM36651_PS_IT3)
> -			*val = 520;
> +			*val2 = 520;
>  		else if (cm36651->ps_int_time == CM36651_PS_IT4)
> -			*val = 640;
> +			*val2 = 640;
>  		else
>  			return -EINVAL;
>  		break;
> @@ -387,11 +387,11 @@ static int cm36651_read_int_time(struct cm36651_data *cm36651,
>  		return -EINVAL;
>  	}
> 
> -	return IIO_VAL_INT;
> +	return IIO_VAL_INT_PLUS_MICRO;
>  }
> 
>  static int cm36651_write_int_time(struct cm36651_data *cm36651,
> -				struct iio_chan_spec const *chan, int val)
> +				struct iio_chan_spec const *chan, int val2)
I didn't know why do you change from val to val2?
This is just changing variable name, isn't?

>  {
>  	struct i2c_client *client = cm36651->client;
>  	struct i2c_client *ps_client = cm36651->ps_client;
> @@ -399,13 +399,13 @@ static int cm36651_write_int_time(struct cm36651_data *cm36651,
> 
>  	switch (chan->type) {
>  	case IIO_LIGHT:
> -		if (val == 80000)
> +		if (val2 == 80000)
>  			int_time = CM36651_CS_IT1;
> -		else if (val == 160000)
> +		else if (val2 == 160000)
>  			int_time = CM36651_CS_IT2;
> -		else if (val == 320000)
> +		else if (val2 == 320000)
>  			int_time = CM36651_CS_IT3;
> -		else if (val == 640000)
> +		else if (val2 == 640000)
>  			int_time = CM36651_CS_IT4;
>  		else
>  			return -EINVAL;
> @@ -419,13 +419,13 @@ static int cm36651_write_int_time(struct cm36651_data *cm36651,
>  		cm36651->cs_int_time[chan->address] = int_time;
>  		break;
>  	case IIO_PROXIMITY:
> -		if (val == 320)
> +		if (val2 == 320)
>  			int_time = CM36651_PS_IT1;
> -		else if (val == 420)
> +		else if (val2 == 420)
>  			int_time = CM36651_PS_IT2;
> -		else if (val == 520)
> +		else if (val2 == 520)
>  			int_time = CM36651_PS_IT3;
> -		else if (val == 640)
> +		else if (val2 == 640)
>  			int_time = CM36651_PS_IT4;
>  		else
>  			return -EINVAL;
> @@ -459,7 +459,8 @@ static int cm36651_read_raw(struct iio_dev *indio_dev,
>  		ret = cm36651_read_channel(cm36651, chan, val);
>  		break;
>  	case IIO_CHAN_INFO_INT_TIME:
> -		ret = cm36651_read_int_time(cm36651, chan, val);
> +		*val = 0;
> +		ret = cm36651_read_int_time(cm36651, chan, val2);
>  		break;
>  	default:
>  		ret = -EINVAL;
> @@ -479,7 +480,7 @@ static int cm36651_write_raw(struct iio_dev *indio_dev,
>  	int ret = -EINVAL;
> 
>  	if (mask == IIO_CHAN_INFO_INT_TIME) {
> -		ret = cm36651_write_int_time(cm36651, chan, val);
> +		ret = cm36651_write_int_time(cm36651, chan, val2);
>  		if (ret < 0)
>  			dev_err(&client->dev, "Integration time write failed\n");
>  	}
> @@ -487,6 +488,13 @@ static int cm36651_write_raw(struct iio_dev *indio_dev,
>  	return ret;
>  }
> 
> +static int cm36651_write_raw_get_fmt(struct iio_dev *indio_dev,
> +				struct iio_chan_spec const *chan,
> +				long mask)
> +{
> +	return IIO_VAL_INT_PLUS_MICRO;
> +}
> +
>  static int cm36651_read_prox_thresh(struct iio_dev *indio_dev,
>  					const struct iio_chan_spec *chan,
>  					enum iio_event_type type,
> @@ -614,6 +622,7 @@ static const struct iio_info cm36651_info = {
>  	.driver_module		= THIS_MODULE,
>  	.read_raw		= &cm36651_read_raw,
>  	.write_raw		= &cm36651_write_raw,
> +	.write_raw_get_fmt	= &cm36651_write_raw_get_fmt,
>  	.read_event_value	= &cm36651_read_prox_thresh,
>  	.write_event_value	= &cm36651_write_prox_thresh,
>  	.read_event_config	= &cm36651_read_prox_event_config,
> 

^ permalink raw reply	[flat|nested] 3+ messages in thread

* Re: [PATCH 1/2] iio: cm36651:  Fix read/write integration time function.
  2014-02-07 11:46 ` Jaehoon Chung
@ 2014-02-08 12:17   ` Jonathan Cameron
  0 siblings, 0 replies; 3+ messages in thread
From: Jonathan Cameron @ 2014-02-08 12:17 UTC (permalink / raw)
  To: Jaehoon Chung, Beomho Seo, linux-iio; +Cc: Myungjoo Ham

On 07/02/14 11:46, Jaehoon Chung wrote:
> On 02/07/2014 08:13 PM, Beomho Seo wrote:
>>
>> This patch is fixed [read/write] integration time function.
>> cm36651 have integration time from 1 to 640 milliseconds.
>> But, print more then the thounsand second. when call *_integration_time attribute.
>> Because read_integration_time function return IIO_VAL_INT.
>> read integration time function is changed return IIO_VAL_INT_PLUS_MICRO;
>> And then .write_raw_get_fmt callback function for parse a fixed-point number from a string.
>> Some description is revised milliseconds unit.
>>
>> This patch have been tested on exynos4 board.
>>
>> Signed-off-by: Beomho Seo <beomho.seo@samsung.com>
>> ---
>>   drivers/iio/light/cm36651.c |   71 ++++++++++++++++++++++++-------------------
>>   1 file changed, 40 insertions(+), 31 deletions(-)
>>
>> diff --git a/drivers/iio/light/cm36651.c b/drivers/iio/light/cm36651.c
>> index 0a142af..076780c 100644
>> --- a/drivers/iio/light/cm36651.c
>> +++ b/drivers/iio/light/cm36651.c
>> @@ -50,10 +50,10 @@
>>   #define CM36651_CS_CONF2_DEFAULT_BIT	0x08
>>
>>   /* CS_CONF3 channel integration time */
>> -#define CM36651_CS_IT1			0x00 /* Integration time 80000 usec */
>> -#define CM36651_CS_IT2			0x40 /* Integration time 160000 usec */
>> -#define CM36651_CS_IT3			0x80 /* Integration time 320000 usec */
>> -#define CM36651_CS_IT4			0xC0 /* Integration time 640000 usec */
>> +#define CM36651_CS_IT1			0x00 /* Integration time 80 msec */
>> +#define CM36651_CS_IT2			0x40 /* Integration time 160 msec */
>> +#define CM36651_CS_IT3			0x80 /* Integration time 320 msec */
>> +#define CM36651_CS_IT4			0xC0 /* Integration time 640 msec */
>>
>>   /* PS_CONF1 command code */
>>   #define CM36651_PS_ENABLE		0x00
>> @@ -64,10 +64,10 @@
>>   #define CM36651_PS_PERS4		0x0C
>>
>>   /* PS_CONF1 command code: integration time */
>> -#define CM36651_PS_IT1			0x00 /* Integration time 320 usec */
>> -#define CM36651_PS_IT2			0x10 /* Integration time 420 usec */
>> -#define CM36651_PS_IT3			0x20 /* Integration time 520 usec */
>> -#define CM36651_PS_IT4			0x30 /* Integration time 640 usec */
>> +#define CM36651_PS_IT1			0x00 /* Integration time 0.32 msec */
>> +#define CM36651_PS_IT2			0x10 /* Integration time 0.42 msec */
>> +#define CM36651_PS_IT3			0x20 /* Integration time 0.52 msec */
>> +#define CM36651_PS_IT4			0x30 /* Integration time 0.64 msec */
>>
>>   /* PS_CONF1 command code: duty ratio */
>>   #define CM36651_PS_DR1			0x00 /* Duty ratio 1/80 */
>> @@ -93,8 +93,8 @@
>>   #define CM36651_CLOSE_PROXIMITY		0x32
>>   #define CM36651_FAR_PROXIMITY			0x33
>>
>> -#define CM36651_CS_INT_TIME_AVAIL	"80000 160000 320000 640000"
>> -#define CM36651_PS_INT_TIME_AVAIL	"320 420 520 640"
>> +#define CM36651_CS_INT_TIME_AVAIL	"0.08 0.16 0.32 0.64"
>> +#define CM36651_PS_INT_TIME_AVAIL	"0.000320 0.000420 0.000520 0.000640"
>>
>>   enum cm36651_operation_mode {
>>   	CM36651_LIGHT_EN,
>> @@ -356,30 +356,30 @@ static int cm36651_read_channel(struct cm36651_data *cm36651,
>>   }
>>
>>   static int cm36651_read_int_time(struct cm36651_data *cm36651,
>> -				struct iio_chan_spec const *chan, int *val)
>> +				struct iio_chan_spec const *chan, int *val2)
>>   {
>>   	switch (chan->type) {
>>   	case IIO_LIGHT:
>>   		if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT1)
>> -			*val = 80000;
>> +			*val2 = 80000;
>>   		else if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT2)
>> -			*val = 160000;
>> +			*val2 = 160000;
>>   		else if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT3)
>> -			*val = 320000;
>> +			*val2 = 320000;
>>   		else if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT4)
>> -			*val = 640000;
>> +			*val2 = 640000;
>>   		else
>>   			return -EINVAL;
>>   		break;
>>   	case IIO_PROXIMITY:
>>   		if (cm36651->ps_int_time == CM36651_PS_IT1)
>> -			*val = 320;
>> +			*val2 = 320;
>>   		else if (cm36651->ps_int_time == CM36651_PS_IT2)
>> -			*val = 420;
>> +			*val2 = 420;
>>   		else if (cm36651->ps_int_time == CM36651_PS_IT3)
>> -			*val = 520;
>> +			*val2 = 520;
>>   		else if (cm36651->ps_int_time == CM36651_PS_IT4)
>> -			*val = 640;
>> +			*val2 = 640;
>>   		else
>>   			return -EINVAL;
>>   		break;
>> @@ -387,11 +387,11 @@ static int cm36651_read_int_time(struct cm36651_data *cm36651,
>>   		return -EINVAL;
>>   	}
>>
>> -	return IIO_VAL_INT;
>> +	return IIO_VAL_INT_PLUS_MICRO;
>>   }
>>
>>   static int cm36651_write_int_time(struct cm36651_data *cm36651,
>> -				struct iio_chan_spec const *chan, int val)
>> +				struct iio_chan_spec const *chan, int val2)
> I didn't know why do you change from val to val2?
> This is just changing variable name, isn't?
The reasoning is probably to match names with the variable being passed into
the function.  I'd rather keep the amount of code in a fix like this to a minimum so
perhaps rename the function to cm36641_write_int_time_microsecs or similar to make
it clear what is going on?  If anything that is clearer than the change you have made
here.
>
>>   {
>>   	struct i2c_client *client = cm36651->client;
>>   	struct i2c_client *ps_client = cm36651->ps_client;
>> @@ -399,13 +399,13 @@ static int cm36651_write_int_time(struct cm36651_data *cm36651,
>>
>>   	switch (chan->type) {
>>   	case IIO_LIGHT:
>> -		if (val == 80000)
>> +		if (val2 == 80000)
>>   			int_time = CM36651_CS_IT1;
>> -		else if (val == 160000)
>> +		else if (val2 == 160000)
>>   			int_time = CM36651_CS_IT2;
>> -		else if (val == 320000)
>> +		else if (val2 == 320000)
>>   			int_time = CM36651_CS_IT3;
>> -		else if (val == 640000)
>> +		else if (val2 == 640000)
>>   			int_time = CM36651_CS_IT4;
>>   		else
>>   			return -EINVAL;
>> @@ -419,13 +419,13 @@ static int cm36651_write_int_time(struct cm36651_data *cm36651,
>>   		cm36651->cs_int_time[chan->address] = int_time;
>>   		break;
>>   	case IIO_PROXIMITY:
>> -		if (val == 320)
>> +		if (val2 == 320)
>>   			int_time = CM36651_PS_IT1;
>> -		else if (val == 420)
>> +		else if (val2 == 420)
>>   			int_time = CM36651_PS_IT2;
>> -		else if (val == 520)
>> +		else if (val2 == 520)
>>   			int_time = CM36651_PS_IT3;
>> -		else if (val == 640)
>> +		else if (val2 == 640)
>>   			int_time = CM36651_PS_IT4;
>>   		else
>>   			return -EINVAL;
>> @@ -459,7 +459,8 @@ static int cm36651_read_raw(struct iio_dev *indio_dev,
>>   		ret = cm36651_read_channel(cm36651, chan, val);
>>   		break;
>>   	case IIO_CHAN_INFO_INT_TIME:
>> -		ret = cm36651_read_int_time(cm36651, chan, val);
>> +		*val = 0;
>> +		ret = cm36651_read_int_time(cm36651, chan, val2);
>>   		break;
>>   	default:
>>   		ret = -EINVAL;
>> @@ -479,7 +480,7 @@ static int cm36651_write_raw(struct iio_dev *indio_dev,
>>   	int ret = -EINVAL;
>>
>>   	if (mask == IIO_CHAN_INFO_INT_TIME) {
>> -		ret = cm36651_write_int_time(cm36651, chan, val);
>> +		ret = cm36651_write_int_time(cm36651, chan, val2);
>>   		if (ret < 0)
>>   			dev_err(&client->dev, "Integration time write failed\n");
>>   	}
>> @@ -487,6 +488,13 @@ static int cm36651_write_raw(struct iio_dev *indio_dev,
>>   	return ret;
>>   }
>>
>> +static int cm36651_write_raw_get_fmt(struct iio_dev *indio_dev,
>> +				struct iio_chan_spec const *chan,
>> +				long mask)
>> +{
>> +	return IIO_VAL_INT_PLUS_MICRO;
>> +}
>> +
>>   static int cm36651_read_prox_thresh(struct iio_dev *indio_dev,
>>   					const struct iio_chan_spec *chan,
>>   					enum iio_event_type type,
>> @@ -614,6 +622,7 @@ static const struct iio_info cm36651_info = {
>>   	.driver_module		= THIS_MODULE,
>>   	.read_raw		= &cm36651_read_raw,
>>   	.write_raw		= &cm36651_write_raw,
>> +	.write_raw_get_fmt	= &cm36651_write_raw_get_fmt,
>>   	.read_event_value	= &cm36651_read_prox_thresh,
>>   	.write_event_value	= &cm36651_write_prox_thresh,
>>   	.read_event_config	= &cm36651_read_prox_event_config,
>>
>


^ permalink raw reply	[flat|nested] 3+ messages in thread

end of thread, other threads:[~2014-02-08 12:16 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2014-02-07 11:13 [PATCH 1/2] iio: cm36651: Fix read/write integration time function Beomho Seo
2014-02-07 11:46 ` Jaehoon Chung
2014-02-08 12:17   ` Jonathan Cameron

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