hwmon: (w83795) Expose fan control method
Expose fan control method (DC vs. PWM) using the standard sysfs attributes. I've made it read-only as the board should be wired for a given mode, the BIOS should have set up the chip for this mode, and you shouldn't have to change it. But it would be easy enough to make it changeable if someone comes up with a use case. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
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@ -915,6 +915,21 @@ store_pwm_enable(struct device *dev, struct device_attribute *attr,
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return count;
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return count;
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}
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}
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static ssize_t
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show_pwm_mode(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct w83795_data *data = w83795_update_pwm_config(dev);
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int index = to_sensor_dev_attr_2(attr)->index;
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unsigned int mode;
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if (data->pwm_fomc & (1 << index))
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mode = 0; /* DC */
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else
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mode = 1; /* PWM */
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return sprintf(buf, "%u\n", mode);
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}
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static ssize_t
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static ssize_t
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show_temp_src(struct device *dev, struct device_attribute *attr, char *buf)
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show_temp_src(struct device *dev, struct device_attribute *attr, char *buf)
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{
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{
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@ -1551,6 +1566,8 @@ store_sf_setup(struct device *dev, struct device_attribute *attr,
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show_pwm, store_pwm, PWM_FREQ, index - 1), \
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show_pwm, store_pwm, PWM_FREQ, index - 1), \
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SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO, \
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SENSOR_ATTR_2(pwm##index##_enable, S_IWUSR | S_IRUGO, \
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show_pwm_enable, store_pwm_enable, NOT_USED, index - 1), \
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show_pwm_enable, store_pwm_enable, NOT_USED, index - 1), \
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SENSOR_ATTR_2(pwm##index##_mode, S_IRUGO, \
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show_pwm_mode, NULL, NOT_USED, index - 1), \
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SENSOR_ATTR_2(fan##index##_target, S_IWUSR | S_IRUGO, \
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SENSOR_ATTR_2(fan##index##_target, S_IWUSR | S_IRUGO, \
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show_fanin, store_fanin, FANIN_TARGET, index - 1) }
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show_fanin, store_fanin, FANIN_TARGET, index - 1) }
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@ -1698,7 +1715,7 @@ static const struct sensor_device_attribute_2 w83795_dts[][8] = {
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SENSOR_ATTR_DTS(14),
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SENSOR_ATTR_DTS(14),
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};
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};
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static const struct sensor_device_attribute_2 w83795_pwm[][7] = {
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static const struct sensor_device_attribute_2 w83795_pwm[][8] = {
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SENSOR_ATTR_PWM(1),
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SENSOR_ATTR_PWM(1),
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SENSOR_ATTR_PWM(2),
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SENSOR_ATTR_PWM(2),
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SENSOR_ATTR_PWM(3),
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SENSOR_ATTR_PWM(3),
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