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[PATCH] hwmon: (3/3) pc87360 driver update
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pc87360: consolidate fan helper

This patch consolidates the _set_fan_min() helper routine into the 2
line sysfs-callback wrapper that uses it.

Signed-off-by: Jim Cromie <[email protected]>
Signed-off-by: Jean Delvare <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
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jimc authored and gregkh committed Sep 5, 2005
1 parent 694fa05 commit 11be27e
Showing 1 changed file with 24 additions and 30 deletions.
54 changes: 24 additions & 30 deletions drivers/hwmon/pc87360.c
Original file line number Diff line number Diff line change
Expand Up @@ -246,35 +246,6 @@ static struct i2c_driver pc87360_driver = {
* Sysfs stuff
*/

static ssize_t _set_fan_min(struct device *dev, const char *buf,
size_t count, int nr)
{
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
long fan_min = simple_strtol(buf, NULL, 10);

down(&data->update_lock);
fan_min = FAN_TO_REG(fan_min, FAN_DIV_FROM_REG(data->fan_status[nr]));

/* If it wouldn't fit, change clock divisor */
while (fan_min > 255
&& (data->fan_status[nr] & 0x60) != 0x60) {
fan_min >>= 1;
data->fan[nr] >>= 1;
data->fan_status[nr] += 0x20;
}
data->fan_min[nr] = fan_min > 255 ? 255 : fan_min;
pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_MIN(nr),
data->fan_min[nr]);

/* Write new divider, preserve alarm bits */
pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_STATUS(nr),
data->fan_status[nr] & 0xF9);
up(&data->update_lock);

return count;
}

static ssize_t show_fan_input(struct device *dev, struct device_attribute *devattr, char *buf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
Expand Down Expand Up @@ -307,7 +278,30 @@ static ssize_t set_fan_min(struct device *dev, struct device_attribute *devattr,
size_t count)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
return _set_fan_min(dev, buf, count, attr->index);
struct i2c_client *client = to_i2c_client(dev);
struct pc87360_data *data = i2c_get_clientdata(client);
long fan_min = simple_strtol(buf, NULL, 10);

down(&data->update_lock);
fan_min = FAN_TO_REG(fan_min, FAN_DIV_FROM_REG(data->fan_status[attr->index]));

/* If it wouldn't fit, change clock divisor */
while (fan_min > 255
&& (data->fan_status[attr->index] & 0x60) != 0x60) {
fan_min >>= 1;
data->fan[attr->index] >>= 1;
data->fan_status[attr->index] += 0x20;
}
data->fan_min[attr->index] = fan_min > 255 ? 255 : fan_min;
pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_MIN(attr->index),
data->fan_min[attr->index]);

/* Write new divider, preserve alarm bits */
pc87360_write_value(data, LD_FAN, NO_BANK, PC87360_REG_FAN_STATUS(attr->index),
data->fan_status[attr->index] & 0xF9);
up(&data->update_lock);

return count;
}

#define show_and_set_fan(offset) \
Expand Down

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