hwmon: Update the sysfs interface documentation

[linux-2.6] / drivers / hwmon / adt7473.c

diff --git a/drivers/hwmon/adt7473.c b/drivers/hwmon/adt7473.c
index a3daeefff472b1e12acccc8761f03f360f68a44b..93dbf5e7ff8a64751fd6be8b9faa5c0251ff0df4 100644 (file)
--- a/drivers/hwmon/adt7473.c
+++ b/drivers/hwmon/adt7473.c
@@ -30,7 +30,7 @@
 #include <linux/log2.h>
 
 /* Addresses to scan */
-static unsigned short normal_i2c[] = { 0x2C, 0x2D, 0x2E, I2C_CLIENT_END };
+static const unsigned short normal_i2c[] = { 0x2C, 0x2D, 0x2E, I2C_CLIENT_END };
 
 /* Insmod parameters */
 I2C_CLIENT_INSMOD_1(adt7473);
@@ -309,6 +309,9 @@ no_sensor_update:
                                                ADT7473_REG_PWM_BHVR(i));
        }
 
+       i = i2c_smbus_read_byte_data(client, ADT7473_REG_CFG4);
+       data->max_duty_at_overheat = !!(i & ADT7473_CFG4_MAX_DUTY_AT_OVT);
+
        data->limits_last_updated = local_jiffies;
        data->limits_valid = 1;
 
@@ -422,18 +425,14 @@ static ssize_t show_volt(struct device *dev, struct device_attribute *devattr,
  * number in the range -128 to 127, or as an unsigned number that must
  * be offset by 64.
  */
-static int decode_temp(struct adt7473_data *data, u8 raw)
+static int decode_temp(u8 twos_complement, u8 raw)
 {
-       if (data->temp_twos_complement)
-               return (s8)raw;
-       return raw - 64;
+       return twos_complement ? (s8)raw : raw - 64;
 }
 
-static u8 encode_temp(struct adt7473_data *data, int cooked)
+static u8 encode_temp(u8 twos_complement, int cooked)
 {
-       if (data->temp_twos_complement)
-               return (cooked & 0xFF);
-       return cooked + 64;
+       return twos_complement ? cooked & 0xFF : cooked + 64;
 }
 
 static ssize_t show_temp_min(struct device *dev,
@@ -442,8 +441,9 @@ static ssize_t show_temp_min(struct device *dev,
 {
        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
        struct adt7473_data *data = adt7473_update_device(dev);
-       return sprintf(buf, "%d\n",
-                      1000 * decode_temp(data, data->temp_min[attr->index]));
+       return sprintf(buf, "%d\n", 1000 * decode_temp(
+                                               data->temp_twos_complement,
+                                               data->temp_min[attr->index]));
 }
 
 static ssize_t set_temp_min(struct device *dev,
@@ -455,7 +455,7 @@ static ssize_t set_temp_min(struct device *dev,
        struct i2c_client *client = to_i2c_client(dev);
        struct adt7473_data *data = i2c_get_clientdata(client);
        int temp = simple_strtol(buf, NULL, 10) / 1000;
-       temp = encode_temp(data, temp);
+       temp = encode_temp(data->temp_twos_complement, temp);
 
        mutex_lock(&data->lock);
        data->temp_min[attr->index] = temp;
@@ -472,8 +472,9 @@ static ssize_t show_temp_max(struct device *dev,
 {
        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
        struct adt7473_data *data = adt7473_update_device(dev);
-       return sprintf(buf, "%d\n",
-                      1000 * decode_temp(data, data->temp_max[attr->index]));
+       return sprintf(buf, "%d\n", 1000 * decode_temp(
+                                               data->temp_twos_complement,
+                                               data->temp_max[attr->index]));
 }
 
 static ssize_t set_temp_max(struct device *dev,
@@ -485,7 +486,7 @@ static ssize_t set_temp_max(struct device *dev,
        struct i2c_client *client = to_i2c_client(dev);
        struct adt7473_data *data = i2c_get_clientdata(client);
        int temp = simple_strtol(buf, NULL, 10) / 1000;
-       temp = encode_temp(data, temp);
+       temp = encode_temp(data->temp_twos_complement, temp);
 
        mutex_lock(&data->lock);
        data->temp_max[attr->index] = temp;
@@ -501,8 +502,9 @@ static ssize_t show_temp(struct device *dev, struct device_attribute *devattr,
 {
        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
        struct adt7473_data *data = adt7473_update_device(dev);
-       return sprintf(buf, "%d\n",
-                      1000 * decode_temp(data, data->temp[attr->index]));
+       return sprintf(buf, "%d\n", 1000 * decode_temp(
+                                               data->temp_twos_complement,
+                                               data->temp[attr->index]));
 }
 
 static ssize_t show_fan_min(struct device *dev,
@@ -671,8 +673,9 @@ static ssize_t show_temp_tmax(struct device *dev,
 {
        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
        struct adt7473_data *data = adt7473_update_device(dev);
-       return sprintf(buf, "%d\n",
-                      1000 * decode_temp(data, data->temp_tmax[attr->index]));
+       return sprintf(buf, "%d\n", 1000 * decode_temp(
+                                               data->temp_twos_complement,
+                                               data->temp_tmax[attr->index]));
 }
 
 static ssize_t set_temp_tmax(struct device *dev,
@@ -684,7 +687,7 @@ static ssize_t set_temp_tmax(struct device *dev,
        struct i2c_client *client = to_i2c_client(dev);
        struct adt7473_data *data = i2c_get_clientdata(client);
        int temp = simple_strtol(buf, NULL, 10) / 1000;
-       temp = encode_temp(data, temp);
+       temp = encode_temp(data->temp_twos_complement, temp);
 
        mutex_lock(&data->lock);
        data->temp_tmax[attr->index] = temp;
@@ -701,8 +704,9 @@ static ssize_t show_temp_tmin(struct device *dev,
 {
        struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
        struct adt7473_data *data = adt7473_update_device(dev);
-       return sprintf(buf, "%d\n",
-                      1000 * decode_temp(data, data->temp_tmin[attr->index]));
+       return sprintf(buf, "%d\n", 1000 * decode_temp(
+                                               data->temp_twos_complement,
+                                               data->temp_tmin[attr->index]));
 }
 
 static ssize_t set_temp_tmin(struct device *dev,
@@ -714,7 +718,7 @@ static ssize_t set_temp_tmin(struct device *dev,
        struct i2c_client *client = to_i2c_client(dev);
        struct adt7473_data *data = i2c_get_clientdata(client);
        int temp = simple_strtol(buf, NULL, 10) / 1000;
-       temp = encode_temp(data, temp);
+       temp = encode_temp(data->temp_twos_complement, temp);
 
        mutex_lock(&data->lock);
        data->temp_tmin[attr->index] = temp;