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/*
hwmon.h - part of lm_sensors, Linux kernel modules for hardware monitoring
This file declares helper functions for the sysfs class "hwmon",
for use by sensors drivers.
Copyright (C) 2005 Mark M. Hoffman <mhoffman@lightlink.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
*/
#ifndef _HWMON_H_
#define _HWMON_H_
#include <linux/device.h>
struct device *hwmon_device_register(struct device *dev);
void hwmon_device_unregister(struct device *dev);
struct hwmon_property;
/*
* Register property: add the sysfs entry for the hwmon framework
* so that the hwmon property can be accessed with
* hwmon_get_value()/hwmon_set_value().
* Unregister property: the reverse.
*
* Note that register/unregister property functions do not touch
* sysfs itself. The user should call sysfs_create/update/merge/...
* themselves.
*/
extern struct hwmon_property *hwmon_register_property(struct device *hwmon,
const struct device_attribute *attr);
extern int hwmon_unregister_property(struct device *hwmon,
struct hwmon_property *);
extern int hwmon_register_properties(struct device *hwmon,
const struct attribute_group *attrs);
extern int hwmon_unregister_properties(struct device *hwmon,
const struct attribute_group *attrs);
/* Note that hwmon_device_unregister does the same anyway */
extern void hwmon_unregister_all_properties(struct device *hwmon);
extern struct device *hwmon_find_device(struct device *dev);
extern struct device *hwmon_find_device_name(char *devname);
extern struct hwmon_property *hwmon_get_property(struct device *hwmon,
const char *name);
extern int hwmon_get_value(struct device *hwmon, struct hwmon_property * prop,
int *value);
extern int hwmon_set_value(struct device *hwmon, struct hwmon_property * prop,
int value);
/* Scale user input to sensible values */
static inline int SENSORS_LIMIT(long value, long low, long high)
{
if (value < low)
return low;
else if (value > high)
return high;
else
return value;
}
#endif
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