[GitHub/mt8127/android_kernel_alcatel_ttab.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>
#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;
	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__ */
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>
b1569e99	30	#include <linux/workqueue.h>
203d3d4a ZR	31
	32	struct thermal_zone_device;
	33	struct thermal_cooling_device;
	34
6503e5df MG	35	enum thermal_device_mode {
	36	THERMAL_DEVICE_DISABLED = 0,
	37	THERMAL_DEVICE_ENABLED,
	38	};
	39
	40	enum thermal_trip_type {
	41	THERMAL_TRIP_ACTIVE = 0,
	42	THERMAL_TRIP_PASSIVE,
	43	THERMAL_TRIP_HOT,
	44	THERMAL_TRIP_CRITICAL,
	45	};
	46
203d3d4a ZR	47	struct thermal_zone_device_ops {
	48	int (bind) (struct thermal_zone_device ,
	49	struct thermal_cooling_device *);
	50	int (unbind) (struct thermal_zone_device ,
	51	struct thermal_cooling_device *);
6503e5df MG	52	int (get_temp) (struct thermal_zone_device , unsigned long *);
	53	int (get_mode) (struct thermal_zone_device ,
	54	enum thermal_device_mode *);
	55	int (set_mode) (struct thermal_zone_device ,
	56	enum thermal_device_mode);
	57	int (get_trip_type) (struct thermal_zone_device , int,
	58	enum thermal_trip_type *);
	59	int (get_trip_temp) (struct thermal_zone_device , int,
	60	unsigned long *);
9ec732ff	61	int (get_crit_temp) (struct thermal_zone_device , unsigned long *);
b1569e99 MG	62	int (notify) (struct thermal_zone_device , int,
b1569e99 MG	63	enum thermal_trip_type);
203d3d4a ZR	64	};
	65
	66	struct thermal_cooling_device_ops {
6503e5df MG	67	int (get_max_state) (struct thermal_cooling_device , unsigned long *);
	68	int (get_cur_state) (struct thermal_cooling_device , unsigned long *);
	69	int (set_cur_state) (struct thermal_cooling_device , unsigned long);
203d3d4a ZR	70	};
	71
	72	#define THERMAL_TRIPS_NONE -1
5f1a3f2a	73	#define THERMAL_MAX_TRIPS 12
203d3d4a ZR	74	#define THERMAL_NAME_LENGTH 20
	75	struct thermal_cooling_device {
	76	int id;
	77	char type[THERMAL_NAME_LENGTH];
	78	struct device device;
	79	void *devdata;
	80	struct thermal_cooling_device_ops *ops;
	81	struct list_head node;
	82	};
	83
041d4bbf ZR	84	#define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \
	85	((long)t-2732+5)/10 : ((long)t-2732-5)/10)
	86	#define CELSIUS_TO_KELVIN(t) ((t)*10+2732)
	87
16d75239	88	#if defined(CONFIG_THERMAL_HWMON)
e68b16ab ZR	89	/* thermal zone devices with the same type share one hwmon device */
	90	struct thermal_hwmon_device {
	91	char type[THERMAL_NAME_LENGTH];
	92	struct device *device;
	93	int count;
	94	struct list_head tz_list;
	95	struct list_head node;
	96	};
	97
	98	struct thermal_hwmon_attr {
	99	struct device_attribute attr;
	100	char name[16];
	101	};
	102	#endif
	103
203d3d4a ZR	104	struct thermal_zone_device {
	105	int id;
	106	char type[THERMAL_NAME_LENGTH];
	107	struct device device;
	108	void *devdata;
	109	int trips;
b1569e99 MG	110	int tc1;
	111	int tc2;
	112	int passive_delay;
	113	int polling_delay;
	114	int last_temperature;
	115	bool passive;
203d3d4a ZR	116	struct thermal_zone_device_ops *ops;
	117	struct list_head cooling_devices;
	118	struct idr idr;
	119	struct mutex lock; /* protect cooling devices list */
	120	struct list_head node;
b1569e99	121	struct delayed_work poll_queue;
16d75239	122	#if defined(CONFIG_THERMAL_HWMON)
e68b16ab ZR	123	struct list_head hwmon_node;
	124	struct thermal_hwmon_device *hwmon;
	125	struct thermal_hwmon_attr temp_input; /* hwmon sys attr */
	126	struct thermal_hwmon_attr temp_crit; /* hwmon sys attr */
	127	#endif
203d3d4a ZR	128	};
	129
	130	struct thermal_zone_device thermal_zone_device_register(char , int, void *,
a0dd25b2 LB	131	struct
a0dd25b2 LB	132	thermal_zone_device_ops
b1569e99 MG	133	*, int tc1, int tc2,
	134	int passive_freq,
	135	int polling_freq);
203d3d4a ZR	136	void thermal_zone_device_unregister(struct thermal_zone_device *);
	137
	138	int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
	139	struct thermal_cooling_device *);
	140	int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int,
	141	struct thermal_cooling_device *);
b1569e99	142	void thermal_zone_device_update(struct thermal_zone_device *);
203d3d4a	143	struct thermal_cooling_device thermal_cooling_device_register(char , void *,
a0dd25b2 LB	144	struct
	145	thermal_cooling_device_ops
	146	*);
203d3d4a ZR	147	void thermal_cooling_device_unregister(struct thermal_cooling_device *);
203d3d4a ZR	148
a0dd25b2	149	#endif /* __THERMAL_H__ */