[deliverable/linux.git] / include / linux / thermal.h

/*
 *  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>

struct thermal_zone_device;
struct thermal_cooling_device;

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 *, char *);
	int (*get_mode) (struct thermal_zone_device *, char *);
	int (*set_mode) (struct thermal_zone_device *, const char *);
	int (*get_trip_type) (struct thermal_zone_device *, int, char *);
	int (*get_trip_temp) (struct thermal_zone_device *, int, char *);
};

struct thermal_cooling_device_ops {
	int (*get_max_state) (struct thermal_cooling_device *, char *);
	int (*get_cur_state) (struct thermal_cooling_device *, char *);
	int (*set_cur_state) (struct thermal_cooling_device *, unsigned int);
};

#define THERMAL_TRIPS_NONE -1
#define THERMAL_MAX_TRIPS 10
#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)

struct thermal_zone_device {
	int id;
	char type[THERMAL_NAME_LENGTH];
	struct device device;
	void *devdata;
	int trips;
	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 thermal_zone_device *thermal_zone_device_register(char *, int, void *,
							 struct
							 thermal_zone_device_ops
							 *);
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 *);

#ifdef	CONFIG_THERMAL
struct thermal_cooling_device *thermal_cooling_device_register(char *, void *,
							       struct
							       thermal_cooling_device_ops
							       *);
void thermal_cooling_device_unregister(struct thermal_cooling_device *);
#else
static inline struct thermal_cooling_device
*thermal_cooling_device_register(char *c, void *v,
				 struct thermal_cooling_device_ops *t)
{
	return NULL;
}
static inline
    void thermal_cooling_device_unregister(struct thermal_cooling_device *t)
{
};
#endif

#endif /* __THERMAL_H__ */
Commit	Line	Data
203d3d4a ZR	1	/*
	2	* thermal.h ($Revision: 0 $)
	3	*
	4	* Copyright (C) 2008 Intel Corp
	5	* Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
	6	* Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
	7	*
	8	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; version 2 of the License.
	12	*
	13	* This program is distributed in the hope that it will be useful, but
	14	* WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	* General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License along
	19	* with this program; if not, write to the Free Software Foundation, Inc.,
	20	* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
	21	*
	22	* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
	23	*/
	24
	25	#ifndef __THERMAL_H__
	26	#define __THERMAL_H__
	27
	28	#include <linux/idr.h>
	29	#include <linux/device.h>
	30
	31	struct thermal_zone_device;
	32	struct thermal_cooling_device;
	33
	34	struct thermal_zone_device_ops {
	35	int (bind) (struct thermal_zone_device ,
	36	struct thermal_cooling_device *);
	37	int (unbind) (struct thermal_zone_device ,
	38	struct thermal_cooling_device *);
	39	int (get_temp) (struct thermal_zone_device , char *);
	40	int (get_mode) (struct thermal_zone_device , char *);
	41	int (set_mode) (struct thermal_zone_device , const char *);
	42	int (get_trip_type) (struct thermal_zone_device , int, char *);
	43	int (get_trip_temp) (struct thermal_zone_device , int, char *);
	44	};
	45
	46	struct thermal_cooling_device_ops {
	47	int (get_max_state) (struct thermal_cooling_device , char *);
	48	int (get_cur_state) (struct thermal_cooling_device , char *);
	49	int (set_cur_state) (struct thermal_cooling_device , unsigned int);
	50	};
	51
	52	#define THERMAL_TRIPS_NONE -1
	53	#define THERMAL_MAX_TRIPS 10
	54	#define THERMAL_NAME_LENGTH 20
	55	struct thermal_cooling_device {
	56	int id;
	57	char type[THERMAL_NAME_LENGTH];
	58	struct device device;
	59	void *devdata;
	60	struct thermal_cooling_device_ops *ops;
	61	struct list_head node;
	62	};
	63
041d4bbf ZR	64	#define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \
	65	((long)t-2732+5)/10 : ((long)t-2732-5)/10)
	66	#define CELSIUS_TO_KELVIN(t) ((t)*10+2732)
	67
203d3d4a ZR	68	struct thermal_zone_device {
	69	int id;
	70	char type[THERMAL_NAME_LENGTH];
	71	struct device device;
	72	void *devdata;
	73	int trips;
	74	struct thermal_zone_device_ops *ops;
	75	struct list_head cooling_devices;
	76	struct idr idr;
	77	struct mutex lock; /* protect cooling devices list */
	78	struct list_head node;
	79	};
	80
	81	struct thermal_zone_device thermal_zone_device_register(char , int, void *,
a0dd25b2 LB	82	struct
	83	thermal_zone_device_ops
	84	*);
203d3d4a ZR	85	void thermal_zone_device_unregister(struct thermal_zone_device *);
	86
	87	int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
	88	struct thermal_cooling_device *);
	89	int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int,
	90	struct thermal_cooling_device *);
	91
a0dd25b2	92	#ifdef CONFIG_THERMAL
203d3d4a	93	struct thermal_cooling_device thermal_cooling_device_register(char , void *,
a0dd25b2 LB	94	struct
	95	thermal_cooling_device_ops
	96	*);
203d3d4a	97	void thermal_cooling_device_unregister(struct thermal_cooling_device *);
a0dd25b2 LB	98	#else
	99	static inline struct thermal_cooling_device
	100	thermal_cooling_device_register(char c, void *v,
	101	struct thermal_cooling_device_ops *t)
	102	{
	103	return NULL;
	104	}
	105	static inline
	106	void thermal_cooling_device_unregister(struct thermal_cooling_device *t)
	107	{
	108	};
	109	#endif
203d3d4a	110
a0dd25b2	111	#endif /* __THERMAL_H__ */