[RFC PATCH 2/9] hwmon: (lm90) split set&show temp as common codes

[Wei Ni <wni@nvidia.com>]

Split set&show temp codes as common functions, so we can use it directly when
implement linux thermal framework.

Signed-off-by: Wei Ni <wni@nvidia.com>
---
 drivers/hwmon/lm90.c |  117 +++++++++++++++++++++++++++++++-------------------
 1 file changed, 72 insertions(+), 45 deletions(-)

diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 863412a..caf01b0 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -702,29 +702,35 @@ 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 void _show_temp8(struct device *dev, int index, int *temp)
 {
-	struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
 	struct lm90_data *data = lm90_update_device(dev);
-	int temp;
 
 	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)
-		temp += 16000;
+	if (data->kind == lm99 && index == 3)
+		*temp += 16000;
+
+}
+
+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;
+
+	_show_temp8(dev, attr->index, &temp);
 
 	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 _set_temp8(struct device *dev, int index, long val)
 {
 	static const u8 reg[8] = {
 		LM90_REG_W_LOCAL_LOW,
@@ -737,60 +743,73 @@ 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;
+
+	_set_temp8(dev, index, val);
+
 	return count;
 }
 
-static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr,
-			   char *buf)
+static void _show_temp11(struct device *dev, int index, int *temp)
 {
-	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
 	struct lm90_data *data = lm90_update_device(dev);
-	int temp;
 
 	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]);
+		*temp = temp_from_s16(data->temp11[index]);
 
 	/* +16 degrees offset for temp2 for the LM99 */
-	if (data->kind == lm99 &&  attr->index <= 2)
-		temp += 16000;
+	if (data->kind == lm99 &&  index <= 2)
+		*temp += 16000;
+}
+
+static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr,
+			   char *buf)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	int temp;
+
+	_show_temp11(dev, attr->index, &temp);
 
 	return sprintf(buf, "%d\n", temp);
 }
 
-static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
-			  const char *buf, size_t count)
+static void _set_temp11(struct device *dev, int nr, int index, long val)
 {
 	struct {
 		u8 high;
@@ -804,17 +823,8 @@ static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
 		{ LM90_REG_W_REMOTE_HIGHH, LM90_REG_W_REMOTE_HIGHL, 1 }
 	};
 
-	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
 	struct i2c_client *client = to_i2c_client(dev);
 	struct lm90_data *data = i2c_get_clientdata(client);
-	int nr = attr->nr;
-	int index = 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 && index <= 2)
@@ -839,6 +849,23 @@ static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
 	lm90_select_remote_channel(client, data, 0);
 
 	mutex_unlock(&data->update_lock);
+}
+
+static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
+			  const char *buf, size_t count)
+{
+	struct sensor_device_attribute_2 *attr = to_sensor_dev_attr_2(devattr);
+	int nr = attr->nr;
+	int index = attr->index;
+	long val;
+	int err;
+
+	err = kstrtol(buf, 10, &val);
+	if (err < 0)
+		return err;
+
+	_set_temp11(dev, nr, index, val);
+
 	return count;
 }
 
-- 
1.7.9.5