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eeepc-laptop: Fix hwmon interface 

Creates a name file in the sysfs directory, that
is needed for the libsensors library to work.
Also rename fan1_pwm to pwm1 and scale its value as needed.

This fixes bug #11520:
http://bugzilla.kernel.org/show_bug.cgi?id=11520

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Corentin Chary 2008-10-09 15:33:57 +02:00 committed by Jean Delvare
parent 69849375d6
commit 04dcd84bc7
1 changed files with 13 additions and 3 deletions
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16
drivers/misc/eeepc-laptop.c
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@ -450,12 +450,14 @@ static int eeepc_get_fan_pwm(void)
int value = 0;
read_acpi_int(NULL, EEEPC_EC_FAN_PWM, &value);
value = value * 255 / 100;
return (value);
}
static void eeepc_set_fan_pwm(int value)
{
value = SENSORS_LIMIT(value, 0, 100);
value = SENSORS_LIMIT(value, 0, 255);
value = value * 100 / 255;
ec_write(EEEPC_EC_SC02, value);
}
@ -520,15 +522,23 @@ static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0);
EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL);
EEEPC_CREATE_SENSOR_ATTR(fan1_pwm, S_IRUGO | S_IWUSR,
EEEPC_CREATE_SENSOR_ATTR(pwm1, S_IRUGO | S_IWUSR,
eeepc_get_fan_pwm, eeepc_set_fan_pwm);
EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
eeepc_get_fan_ctrl, eeepc_set_fan_ctrl);
static ssize_t
show_name(struct device *dev, struct device_attribute *attr, char *buf)
{
return sprintf(buf, "eeepc\n");
}
static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
static struct attribute *hwmon_attributes[] = {
&sensor_dev_attr_fan1_pwm.dev_attr.attr,
&sensor_dev_attr_pwm1.dev_attr.attr,
&sensor_dev_attr_fan1_input.dev_attr.attr,
&sensor_dev_attr_pwm1_enable.dev_attr.attr,
&sensor_dev_attr_name.dev_attr.attr,
NULL
};