151 lines
4.6 KiB
C
151 lines
4.6 KiB
C
/*
|
|
* thermal.h ($Revision: 0 $)
|
|
*
|
|
* Copyright (C) 2008 Intel Corp
|
|
* Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
|
|
* Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.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.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
|
|
*
|
|
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
*/
|
|
|
|
#ifndef __THERMAL_H__
|
|
#define __THERMAL_H__
|
|
|
|
#include <linux/idr.h>
|
|
#include <linux/device.h>
|
|
#include <linux/workqueue.h>
|
|
|
|
struct thermal_zone_device;
|
|
struct thermal_cooling_device;
|
|
|
|
enum thermal_device_mode {
|
|
THERMAL_DEVICE_DISABLED = 0,
|
|
THERMAL_DEVICE_ENABLED,
|
|
};
|
|
|
|
enum thermal_trip_type {
|
|
THERMAL_TRIP_ACTIVE = 0,
|
|
THERMAL_TRIP_PASSIVE,
|
|
THERMAL_TRIP_HOT,
|
|
THERMAL_TRIP_CRITICAL,
|
|
};
|
|
|
|
struct thermal_zone_device_ops {
|
|
int (*bind) (struct thermal_zone_device *,
|
|
struct thermal_cooling_device *);
|
|
int (*unbind) (struct thermal_zone_device *,
|
|
struct thermal_cooling_device *);
|
|
int (*get_temp) (struct thermal_zone_device *, unsigned long *);
|
|
int (*get_mode) (struct thermal_zone_device *,
|
|
enum thermal_device_mode *);
|
|
int (*set_mode) (struct thermal_zone_device *,
|
|
enum thermal_device_mode);
|
|
int (*get_trip_type) (struct thermal_zone_device *, int,
|
|
enum thermal_trip_type *);
|
|
int (*get_trip_temp) (struct thermal_zone_device *, int,
|
|
unsigned long *);
|
|
int (*get_crit_temp) (struct thermal_zone_device *, unsigned long *);
|
|
int (*notify) (struct thermal_zone_device *, int,
|
|
enum thermal_trip_type);
|
|
};
|
|
|
|
struct thermal_cooling_device_ops {
|
|
int (*get_max_state) (struct thermal_cooling_device *, unsigned long *);
|
|
int (*get_cur_state) (struct thermal_cooling_device *, unsigned long *);
|
|
int (*set_cur_state) (struct thermal_cooling_device *, unsigned long);
|
|
};
|
|
|
|
#define THERMAL_TRIPS_NONE -1
|
|
#define THERMAL_MAX_TRIPS 12
|
|
#define THERMAL_NAME_LENGTH 20
|
|
struct thermal_cooling_device {
|
|
int id;
|
|
char type[THERMAL_NAME_LENGTH];
|
|
struct device device;
|
|
void *devdata;
|
|
struct thermal_cooling_device_ops *ops;
|
|
struct list_head node;
|
|
};
|
|
|
|
#define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \
|
|
((long)t-2732+5)/10 : ((long)t-2732-5)/10)
|
|
#define CELSIUS_TO_KELVIN(t) ((t)*10+2732)
|
|
|
|
#if defined(CONFIG_THERMAL_HWMON)
|
|
/* thermal zone devices with the same type share one hwmon device */
|
|
struct thermal_hwmon_device {
|
|
char type[THERMAL_NAME_LENGTH];
|
|
struct device *device;
|
|
int count;
|
|
struct list_head tz_list;
|
|
struct list_head node;
|
|
};
|
|
|
|
struct thermal_hwmon_attr {
|
|
struct device_attribute attr;
|
|
char name[16];
|
|
};
|
|
#endif
|
|
|
|
struct thermal_zone_device {
|
|
int id;
|
|
char type[THERMAL_NAME_LENGTH];
|
|
struct device device;
|
|
void *devdata;
|
|
int trips;
|
|
int tc1;
|
|
int tc2;
|
|
int passive_delay;
|
|
int polling_delay;
|
|
int last_temperature;
|
|
bool passive;
|
|
unsigned int forced_passive;
|
|
struct thermal_zone_device_ops *ops;
|
|
struct list_head cooling_devices;
|
|
struct idr idr;
|
|
struct mutex lock; /* protect cooling devices list */
|
|
struct list_head node;
|
|
struct delayed_work poll_queue;
|
|
#if defined(CONFIG_THERMAL_HWMON)
|
|
struct list_head hwmon_node;
|
|
struct thermal_hwmon_device *hwmon;
|
|
struct thermal_hwmon_attr temp_input; /* hwmon sys attr */
|
|
struct thermal_hwmon_attr temp_crit; /* hwmon sys attr */
|
|
#endif
|
|
};
|
|
|
|
struct thermal_zone_device *thermal_zone_device_register(char *, int, void *,
|
|
struct
|
|
thermal_zone_device_ops
|
|
*, int tc1, int tc2,
|
|
int passive_freq,
|
|
int polling_freq);
|
|
void thermal_zone_device_unregister(struct thermal_zone_device *);
|
|
|
|
int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
|
|
struct thermal_cooling_device *);
|
|
int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int,
|
|
struct thermal_cooling_device *);
|
|
void thermal_zone_device_update(struct thermal_zone_device *);
|
|
struct thermal_cooling_device *thermal_cooling_device_register(char *, void *,
|
|
struct
|
|
thermal_cooling_device_ops
|
|
*);
|
|
void thermal_cooling_device_unregister(struct thermal_cooling_device *);
|
|
|
|
#endif /* __THERMAL_H__ */
|