[PATCH v2 1/3] hwmon: (lm90) split set&show temp as common codes
Split set&show temp codes as common functions, so we can use it directly when
implement linux thermal framework.
Signed-off-by: Wei Ni
---
drivers/hwmon/lm90.c | 118 --
1 file changed, 75 insertions(+), 43 deletions(-)
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 8eeb141..2cb7f8e 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -702,29 +702,37 @@ static u16 temp_to_u16_adt7461(struct lm90_data *data,
long val)
* Sysfs stuff
*/
-static ssize_t show_temp8(struct device *dev, struct device_attribute *devattr,
- char *buf)
+static int read_temp8(struct device *dev, int index)
{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
- struct lm90_data *data = lm90_update_device(dev);
int temp;
+ struct lm90_data *data = lm90_update_device(dev);
if (data->kind == adt7461)
- temp = temp_from_u8_adt7461(data, data->temp8[attr->index]);
+ temp = temp_from_u8_adt7461(data, data->temp8[index]);
else if (data->kind == max6646)
- temp = temp_from_u8(data->temp8[attr->index]);
+ temp = temp_from_u8(data->temp8[index]);
else
- temp = temp_from_s8(data->temp8[attr->index]);
+ temp = temp_from_s8(data->temp8[index]);
/* +16 degrees offset for temp2 for the LM99 */
- if (data->kind == lm99 && attr->index == 3)
+ if (data->kind == lm99 && index == 3)
temp += 16000;
+ return temp;
+}
+
+static ssize_t show_temp8(struct device *dev, struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ int temp;
+
+ temp = read_temp8(dev, attr->index);
+
return sprintf(buf, "%d\n", temp);
}
-static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr,
-const char *buf, size_t count)
+static void write_temp8(struct device *dev, int index, long val)
{
static const u8 reg[8] = {
LM90_REG_W_LOCAL_LOW,
@@ -737,60 +745,76 @@ static ssize_t set_temp8(struct device *dev, struct
device_attribute *devattr,
MAX6659_REG_W_REMOTE_EMERG,
};
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct i2c_client *client = to_i2c_client(dev);
struct lm90_data *data = i2c_get_clientdata(client);
- int nr = attr->index;
- long val;
- int err;
-
- err = kstrtol(buf, 10, &val);
- if (err < 0)
- return err;
/* +16 degrees offset for temp2 for the LM99 */
- if (data->kind == lm99 && attr->index == 3)
+ if (data->kind == lm99 && index == 3)
val -= 16000;
mutex_lock(&data->update_lock);
if (data->kind == adt7461)
- data->temp8[nr] = temp_to_u8_adt7461(data, val);
+ data->temp8[index] = temp_to_u8_adt7461(data, val);
else if (data->kind == max6646)
- data->temp8[nr] = temp_to_u8(val);
+ data->temp8[index] = temp_to_u8(val);
else
- data->temp8[nr] = temp_to_s8(val);
+ data->temp8[index] = temp_to_s8(val);
- lm90_select_remote_channel(client, data, nr >= 6);
- i2c_smbus_write_byte_data(client, reg[nr], data->temp8[nr]);
+ lm90_select_remote_channel(client, data, index >= 6);
+ i2c_smbus_write_byte_data(client, reg[index], data->temp8[index]);
lm90_select_remote_channel(client, data, 0);
mutex_unlock(&data->update_lock);
+}
+
+static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr,
+const char *buf, size_t count)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ int index = attr->index;
+ long val;
+ int err;
+
+ err = kstrtol(buf, 10, &val);
+ if (err < 0)
+ return err;
+
+ write_temp8(dev, index, val);
+
return count;
}
-static ssize_t show_temp11(struct device *dev, struct device_attribute
*devattr,
- char *buf)
+static int read_temp11(struct device *dev, int index)
{
- struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
- struct lm90_data *data = lm90_update_device(dev);
int temp;
+ struct lm90_data *data = lm90_update_device(dev);
if (data->kind == adt7461)
- temp = temp_from_u16_adt7461(data, data->temp11[attr->index]);
+ temp = temp_from_u16_adt7461(data, data->temp11[index]);
else if (data->kind == max6646)
- temp = temp_from_u16(data->temp11[attr->index]);
+ temp = temp_from_u16(data->temp11[index]);
else
- temp = temp_from_s16(data->temp11[attr->index]);
+
[PATCH v2 1/3] hwmon: (lm90) split set&show temp as common codes
Split set&show temp codes as common functions, so we can use it
directly when implement linux thermal framework.
And handle error return value for the lm90_select_remote_channel
and write_tempx, then set_temp8 and set_temp11 could return it
to user-space.
Change-Id: Id7178f680718fd54b9ba953118d91052b59b692e
Signed-off-by: Wei Ni
Signed-off-by: Jean Delvare
---
drivers/hwmon/lm90.c | 164 +-
1 file changed, 109 insertions(+), 55 deletions(-)
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index c9ff08d..cb33dcf 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -473,20 +473,23 @@ static int lm90_read16(struct i2c_client *client, u8
regh, u8 regl, u16 *value)
* various registers have different meanings as a result of selecting a
* non-default remote channel.
*/
-static inline void lm90_select_remote_channel(struct i2c_client *client,
- struct lm90_data *data,
- int channel)
+static inline int lm90_select_remote_channel(struct i2c_client *client,
+struct lm90_data *data,
+int channel)
{
u8 config;
+ int err = 0;
if (data->kind == max6696) {
lm90_read_reg(client, LM90_REG_R_CONFIG1, &config);
config &= ~0x08;
if (channel)
config |= 0x08;
- i2c_smbus_write_byte_data(client, LM90_REG_W_CONFIG1,
- config);
+ err = i2c_smbus_write_byte_data(client, LM90_REG_W_CONFIG1,
+ config);
}
+
+ return err;
}
/*
@@ -759,29 +762,34 @@ static u16 temp_to_u16_adt7461(struct lm90_data *data,
long val)
* Sysfs stuff
*/
-static ssize_t show_temp8(struct device *dev, struct device_attribute *devattr,
- char *buf)
+static int read_temp8(struct device *dev, int index)
{
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct lm90_data *data = lm90_update_device(dev);
int temp;
if (data->kind == adt7461 || data->kind == tmp451)
- temp = temp_from_u8_adt7461(data, data->temp8[attr->index]);
+ temp = temp_from_u8_adt7461(data, data->temp8[index]);
else if (data->kind == max6646)
- temp = temp_from_u8(data->temp8[attr->index]);
+ temp = temp_from_u8(data->temp8[index]);
else
- temp = temp_from_s8(data->temp8[attr->index]);
+ temp = temp_from_s8(data->temp8[index]);
/* +16 degrees offset for temp2 for the LM99 */
- if (data->kind == lm99 && attr->index == 3)
+ if (data->kind == lm99 && index == 3)
temp += 16000;
- return sprintf(buf, "%d\n", temp);
+ return temp;
}
-static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr,
-const char *buf, size_t count)
+static ssize_t show_temp8(struct device *dev, struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+
+ return sprintf(buf, "%d\n", read_temp8(dev, attr->index));
+}
+
+static int write_temp8(struct device *dev, int index, long val)
{
static const u8 reg[TEMP8_REG_NUM] = {
LM90_REG_W_LOCAL_LOW,
@@ -794,60 +802,79 @@ static ssize_t set_temp8(struct device *dev, struct
device_attribute *devattr,
MAX6659_REG_W_REMOTE_EMERG,
};
- struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
struct lm90_data *data = dev_get_drvdata(dev);
struct i2c_client *client = data->client;
- int nr = attr->index;
- long val;
int err;
- err = kstrtol(buf, 10, &val);
- if (err < 0)
- return err;
-
/* +16 degrees offset for temp2 for the LM99 */
- if (data->kind == lm99 && attr->index == 3)
+ if (data->kind == lm99 && index == 3)
val -= 16000;
mutex_lock(&data->update_lock);
if (data->kind == adt7461 || data->kind == tmp451)
- data->temp8[nr] = temp_to_u8_adt7461(data, val);
+ data->temp8[index] = temp_to_u8_adt7461(data, val);
else if (data->kind == max6646)
- data->temp8[nr] = temp_to_u8(val);
+ data->temp8[index] = temp_to_u8(val);
else
- data->temp8[nr] = temp_to_s8(val);
-
- lm90_select_remote_channel(client, data, nr >= 6);
- i2c_smbus_write_byte_data(client, reg[nr], data->temp8[nr]);
- lm90_select_remote_channel(client, data, 0);
+ data->temp8[index] = temp_to_s8(val);
+ if ((err = lm90_select_remote_channel(client, data, index >= 6)) ||
Re: [PATCH v2 1/3] hwmon: (lm90) split set&show temp as common codes
On Wed, Jul 10, 2013 at 07:25:37PM +0800, Wei Ni wrote:
> Split set&show temp codes as common functions, so we can use it directly when
> implement linux thermal framework.
>
> Signed-off-by: Wei Ni
> ---
> drivers/hwmon/lm90.c | 118
> --
> 1 file changed, 75 insertions(+), 43 deletions(-)
>
> diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
> index 8eeb141..2cb7f8e 100644
> --- a/drivers/hwmon/lm90.c
> +++ b/drivers/hwmon/lm90.c
> @@ -702,29 +702,37 @@ static u16 temp_to_u16_adt7461(struct lm90_data *data,
> long val)
> * Sysfs stuff
> */
>
> -static ssize_t show_temp8(struct device *dev, struct device_attribute
> *devattr,
> - char *buf)
> +static int read_temp8(struct device *dev, int index)
> {
> - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
> - struct lm90_data *data = lm90_update_device(dev);
> int temp;
> + struct lm90_data *data = lm90_update_device(dev);
>
Why this reordering of variables ?
> if (data->kind == adt7461)
> - temp = temp_from_u8_adt7461(data, data->temp8[attr->index]);
> + temp = temp_from_u8_adt7461(data, data->temp8[index]);
> else if (data->kind == max6646)
> - temp = temp_from_u8(data->temp8[attr->index]);
> + temp = temp_from_u8(data->temp8[index]);
> else
> - temp = temp_from_s8(data->temp8[attr->index]);
> + temp = temp_from_s8(data->temp8[index]);
>
> /* +16 degrees offset for temp2 for the LM99 */
> - if (data->kind == lm99 && attr->index == 3)
> + if (data->kind == lm99 && index == 3)
> temp += 16000;
>
> + return temp;
> +}
> +
> +static ssize_t show_temp8(struct device *dev, struct device_attribute
> *devattr,
> + char *buf)
> +{
> + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
> + int temp;
> +
> + temp = read_temp8(dev, attr->index);
> +
> return sprintf(buf, "%d\n", temp);
Might as well simplify with
return sprintf(buf, "%d\n", read_temp8(dev, attr->index));
> }
>
> -static ssize_t set_temp8(struct device *dev, struct device_attribute
> *devattr,
> - const char *buf, size_t count)
> +static void write_temp8(struct device *dev, int index, long val)
> {
> static const u8 reg[8] = {
> LM90_REG_W_LOCAL_LOW,
> @@ -737,60 +745,76 @@ static ssize_t set_temp8(struct device *dev, struct
> device_attribute *devattr,
> MAX6659_REG_W_REMOTE_EMERG,
> };
>
> - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
> struct i2c_client *client = to_i2c_client(dev);
> struct lm90_data *data = i2c_get_clientdata(client);
> - int nr = attr->index;
> - long val;
> - int err;
> -
> - err = kstrtol(buf, 10, &val);
> - if (err < 0)
> - return err;
>
> /* +16 degrees offset for temp2 for the LM99 */
> - if (data->kind == lm99 && attr->index == 3)
> + if (data->kind == lm99 && index == 3)
> val -= 16000;
>
> mutex_lock(&data->update_lock);
> if (data->kind == adt7461)
> - data->temp8[nr] = temp_to_u8_adt7461(data, val);
> + data->temp8[index] = temp_to_u8_adt7461(data, val);
> else if (data->kind == max6646)
> - data->temp8[nr] = temp_to_u8(val);
> + data->temp8[index] = temp_to_u8(val);
> else
> - data->temp8[nr] = temp_to_s8(val);
> + data->temp8[index] = temp_to_s8(val);
>
> - lm90_select_remote_channel(client, data, nr >= 6);
> - i2c_smbus_write_byte_data(client, reg[nr], data->temp8[nr]);
> + lm90_select_remote_channel(client, data, index >= 6);
> + i2c_smbus_write_byte_data(client, reg[index], data->temp8[index]);
> lm90_select_remote_channel(client, data, 0);
>
> mutex_unlock(&data->update_lock);
> +}
> +
> +static ssize_t set_temp8(struct device *dev, struct device_attribute
> *devattr,
> + const char *buf, size_t count)
> +{
> + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
> + int index = attr->index;
> + long val;
> + int err;
> +
> + err = kstrtol(buf, 10, &val);
> + if (err < 0)
> + return err;
> +
> + write_temp8(dev, index, val);
> +
> return count;
> }
>
> -static ssize_t show_temp11(struct device *dev, struct device_attribute
> *devattr,
> -char *buf)
> +static int read_temp11(struct device *dev, int index)
> {
> - struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
> - struct lm90_data *data = lm90_update_device(dev);
> int temp;
> + struct lm90_data *data = lm90_update_device(dev);
>
Another unnecessary variable reorder.
> if (data->kind == adt7461)
> - temp = temp_from_u16_adt7461(d
Re: [PATCH v2 1/3] hwmon: (lm90) split set&show temp as common codes
On 07/11/2013 02:21 AM, Guenter Roeck wrote:
> On Wed, Jul 10, 2013 at 07:25:37PM +0800, Wei Ni wrote:
>> Split set&show temp codes as common functions, so we can use it directly when
>> implement linux thermal framework.
>>
>> Signed-off-by: Wei Ni
>> ---
>> drivers/hwmon/lm90.c | 118
>> --
>> 1 file changed, 75 insertions(+), 43 deletions(-)
>>
>> diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
>> index 8eeb141..2cb7f8e 100644
>> --- a/drivers/hwmon/lm90.c
>> +++ b/drivers/hwmon/lm90.c
>> @@ -702,29 +702,37 @@ static u16 temp_to_u16_adt7461(struct lm90_data *data,
>> long val)
>> * Sysfs stuff
>> */
>>
>> -static ssize_t show_temp8(struct device *dev, struct device_attribute
>> *devattr,
>> - char *buf)
>> +static int read_temp8(struct device *dev, int index)
>> {
>> - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
>> - struct lm90_data *data = lm90_update_device(dev);
>> int temp;
>> + struct lm90_data *data = lm90_update_device(dev);
>>
> Why this reordering of variables ?
Oh, I didn't noticed it yet, thanks for your review, I will change it.
>
>> if (data->kind == adt7461)
>> - temp = temp_from_u8_adt7461(data, data->temp8[attr->index]);
>> + temp = temp_from_u8_adt7461(data, data->temp8[index]);
>> else if (data->kind == max6646)
>> - temp = temp_from_u8(data->temp8[attr->index]);
>> + temp = temp_from_u8(data->temp8[index]);
>> else
>> - temp = temp_from_s8(data->temp8[attr->index]);
>> + temp = temp_from_s8(data->temp8[index]);
>>
>> /* +16 degrees offset for temp2 for the LM99 */
>> - if (data->kind == lm99 && attr->index == 3)
>> + if (data->kind == lm99 && index == 3)
>> temp += 16000;
>>
>> + return temp;
>> +}
>> +
>> +static ssize_t show_temp8(struct device *dev, struct device_attribute
>> *devattr,
>> + char *buf)
>> +{
>> + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
>> + int temp;
>> +
>> + temp = read_temp8(dev, attr->index);
>> +
>> return sprintf(buf, "%d\n", temp);
>
> Might as well simplify with
> return sprintf(buf, "%d\n", read_temp8(dev, attr->index));
Ok, I will update it.
>
>> }
>>
>> -static ssize_t set_temp8(struct device *dev, struct device_attribute
>> *devattr,
>> - const char *buf, size_t count)
>> +static void write_temp8(struct device *dev, int index, long val)
>> {
>> static const u8 reg[8] = {
>> LM90_REG_W_LOCAL_LOW,
>> @@ -737,60 +745,76 @@ static ssize_t set_temp8(struct device *dev, struct
>> device_attribute *devattr,
>> MAX6659_REG_W_REMOTE_EMERG,
>> };
>>
>> - struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
>> struct i2c_client *client = to_i2c_client(dev);
>> struct lm90_data *data = i2c_get_clientdata(client);
>> - int nr = attr->index;
>> - long val;
>> - int err;
>> -
>> - err = kstrtol(buf, 10, &val);
>> - if (err < 0)
>> - return err;
>>
>> /* +16 degrees offset for temp2 for the LM99 */
>> - if (data->kind == lm99 && attr->index == 3)
>> + if (data->kind == lm99 && index == 3)
>> val -= 16000;
>>
>> mutex_lock(&data->update_lock);
>> if (data->kind == adt7461)
>> - data->temp8[nr] = temp_to_u8_adt7461(data, val);
>> + data->temp8[index] = temp_to_u8_adt7461(data, val);
>> else if (data->kind == max6646)
>> - data->temp8[nr] = temp_to_u8(val);
>> + data->temp8[index] = temp_to_u8(val);
>> else
>> - data->temp8[nr] = temp_to_s8(val);
>> + data->temp8[index] = temp_to_s8(val);
>>
>> - lm90_select_remote_channel(client, data, nr >= 6);
>> - i2c_smbus_write_byte_data(client, reg[nr], data->temp8[nr]);
>> + lm90_select_remote_channel(client, data, index >= 6);
>> + i2c_smbus_write_byte_data(client, reg[index], data->temp8[index]);
>> lm90_select_remote_channel(client, data, 0);
>>
>> mutex_unlock(&data->update_lock);
>> +}
>> +
>> +static ssize_t set_temp8(struct device *dev, struct device_attribute
>> *devattr,
>> + const char *buf, size_t count)
>> +{
>> + struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
>> + int index = attr->index;
>> + long val;
>> + int err;
>> +
>> + err = kstrtol(buf, 10, &val);
>> + if (err < 0)
>> + return err;
>> +
>> + write_temp8(dev, index, val);
>> +
>> return count;
>> }
>>
>> -static ssize_t show_temp11(struct device *dev, struct device_attribute
>> *devattr,
>> -char *buf)
>> +static int read_temp11(struct device *dev, int index)
>> {
>> - struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devatt
