2 * thermal.h ($Revision: 0 $)
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>
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.
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.
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.
22 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
28 #include <linux/idr.h>
29 #include <linux/device.h>
30 #include <linux/workqueue.h>
32 struct thermal_zone_device;
33 struct thermal_cooling_device;
35 enum thermal_device_mode {
36 THERMAL_DEVICE_DISABLED = 0,
37 THERMAL_DEVICE_ENABLED,
40 enum thermal_trip_type {
41 THERMAL_TRIP_ACTIVE = 0,
44 THERMAL_TRIP_CRITICAL,
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 *);
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,
61 int (*set_trip_temp) (struct thermal_zone_device *, int,
63 int (*get_crit_temp) (struct thermal_zone_device *, unsigned long *);
64 int (*notify) (struct thermal_zone_device *, int,
65 enum thermal_trip_type);
68 struct thermal_cooling_device_ops {
69 int (*get_max_state) (struct thermal_cooling_device *, unsigned long *);
70 int (*get_cur_state) (struct thermal_cooling_device *, unsigned long *);
71 int (*set_cur_state) (struct thermal_cooling_device *, unsigned long);
74 #define THERMAL_TRIPS_NONE -1
75 #define THERMAL_MAX_TRIPS 12
76 #define THERMAL_NAME_LENGTH 20
77 struct thermal_cooling_device {
79 char type[THERMAL_NAME_LENGTH];
82 const struct thermal_cooling_device_ops *ops;
83 struct list_head node;
86 #define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \
87 ((long)t-2732+5)/10 : ((long)t-2732-5)/10)
88 #define CELSIUS_TO_KELVIN(t) ((t)*10+2732)
91 struct device_attribute attr;
92 char name[THERMAL_NAME_LENGTH];
95 struct thermal_zone_device {
97 char type[THERMAL_NAME_LENGTH];
99 struct thermal_attr *trip_temp_attrs;
100 struct thermal_attr *trip_type_attrs;
107 int last_temperature;
109 unsigned int forced_passive;
110 const struct thermal_zone_device_ops *ops;
111 struct list_head cooling_devices;
113 struct mutex lock; /* protect cooling devices list */
114 struct list_head node;
115 struct delayed_work poll_queue;
117 /* Adding event notification support elements */
118 #define THERMAL_GENL_FAMILY_NAME "thermal_event"
119 #define THERMAL_GENL_VERSION 0x01
120 #define THERMAL_GENL_MCAST_GROUP_NAME "thermal_mc_group"
129 struct thermal_genl_event {
133 /* attributes of thermal_genl_family */
135 THERMAL_GENL_ATTR_UNSPEC,
136 THERMAL_GENL_ATTR_EVENT,
137 __THERMAL_GENL_ATTR_MAX,
139 #define THERMAL_GENL_ATTR_MAX (__THERMAL_GENL_ATTR_MAX - 1)
141 /* commands supported by the thermal_genl_family */
143 THERMAL_GENL_CMD_UNSPEC,
144 THERMAL_GENL_CMD_EVENT,
145 __THERMAL_GENL_CMD_MAX,
147 #define THERMAL_GENL_CMD_MAX (__THERMAL_GENL_CMD_MAX - 1)
149 struct thermal_zone_device *thermal_zone_device_register(char *, int, int,
150 void *, const struct thermal_zone_device_ops *, int tc1,
151 int tc2, int passive_freq, int polling_freq);
152 void thermal_zone_device_unregister(struct thermal_zone_device *);
154 int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
155 struct thermal_cooling_device *);
156 int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int,
157 struct thermal_cooling_device *);
158 void thermal_zone_device_update(struct thermal_zone_device *);
159 struct thermal_cooling_device *thermal_cooling_device_register(char *, void *,
160 const struct thermal_cooling_device_ops *);
161 void thermal_cooling_device_unregister(struct thermal_cooling_device *);
164 extern int thermal_generate_netlink_event(u32 orig, enum events event);
166 static inline int thermal_generate_netlink_event(u32 orig, enum events event)
172 #endif /* __THERMAL_H__ */