ChangeSet 1.1938.439.50, 2005/01/06 15:05:25-08:00, khali at linux-fr.org
[PATCH] I2C: Update fscher pwm functionality
This is a small update to the fscher hardware monitoring chip driver.
More specifically it fixes two aspects of pwm:
1* Use the new sysfs names (e.g. pwm1 instead of fan1_pwm).
2* Better handling of out-of-range pwm values.
Signed-off-by: Jean Delvare <khali at linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <greg at kroah.com>
drivers/i2c/chips/fscher.c | 11 ++++++-----
1 files changed, 6 insertions(+), 5 deletions(-)
diff -Nru a/drivers/i2c/chips/fscher.c b/drivers/i2c/chips/fscher.c
--- a/drivers/i2c/chips/fscher.c 2005-01-07 14:54:10 -08:00
+++ b/drivers/i2c/chips/fscher.c 2005-01-07 14:54:10 -08:00
@@ -198,7 +198,7 @@
static DEVICE_ATTR(kind, S_IRUGO, show_##kind##0##sub, NULL);
#define sysfs_fan(offset, reg_status, reg_min, reg_ripple, reg_act) \
-sysfs_rw_n(fan, _pwm , offset, reg_min) \
+sysfs_rw_n(pwm, , offset, reg_min) \
sysfs_rw_n(fan, _status, offset, reg_status) \
sysfs_rw_n(fan, _div , offset, reg_ripple) \
sysfs_ro_n(fan, _input , offset, reg_act)
@@ -247,7 +247,7 @@
#define device_create_file_fan(client, offset) \
do { \
device_create_file(&client->dev, &dev_attr_fan##offset##_status); \
- device_create_file(&client->dev, &dev_attr_fan##offset##_pwm); \
+ device_create_file(&client->dev, &dev_attr_pwm##offset); \
device_create_file(&client->dev, &dev_attr_fan##offset##_div); \
device_create_file(&client->dev, &dev_attr_fan##offset##_input); \
} while (0)
@@ -483,16 +483,17 @@
return sprintf(buf, "%u\n", data->fan_status[FAN_INDEX_FROM_NUM(nr)] & 0x04);
}
-static ssize_t set_fan_pwm(struct i2c_client *client, struct fscher_data *data,
+static ssize_t set_pwm(struct i2c_client *client, struct fscher_data *data,
const char *buf, size_t count, int nr, int reg)
{
- data->fan_min[FAN_INDEX_FROM_NUM(nr)] = simple_strtoul(buf, NULL, 10) & 0xff;
+ unsigned long v = simple_strtoul(buf, NULL, 10);
+ data->fan_min[FAN_INDEX_FROM_NUM(nr)] = v > 0xff ? 0xff : v;
fscher_write_value(client, reg, data->fan_min[FAN_INDEX_FROM_NUM(nr)]);
return count;
}
-static ssize_t show_fan_pwm (struct fscher_data *data, char *buf, int nr)
+static ssize_t show_pwm(struct fscher_data *data, char *buf, int nr)
{
return sprintf(buf, "%u\n", data->fan_min[FAN_INDEX_FROM_NUM(nr)]);
}
