2 * thermal.h ($Revision: 0 $)
4 * Copyright (C) 2008 Intel Corp
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_trip_hyst) (struct thermal_zone_device *, int,
65 int (*set_trip_hyst) (struct thermal_zone_device *, int,
67 int (*get_crit_temp) (struct thermal_zone_device *, unsigned long *);
68 int (*notify) (struct thermal_zone_device *, int,
69 enum thermal_trip_type);
72 struct thermal_cooling_device_ops {
73 int (*get_max_state) (struct thermal_cooling_device *, unsigned long *);
74 int (*get_cur_state) (struct thermal_cooling_device *, unsigned long *);
75 int (*set_cur_state) (struct thermal_cooling_device *, unsigned long);
78 #define THERMAL_TRIPS_NONE -1
79 #define THERMAL_MAX_TRIPS 12
80 #define THERMAL_NAME_LENGTH 20
81 struct thermal_cooling_device {
83 char type[THERMAL_NAME_LENGTH];
86 const struct thermal_cooling_device_ops *ops;
87 struct list_head node;
90 #define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \
91 ((long)t-2732+5)/10 : ((long)t-2732-5)/10)
92 #define CELSIUS_TO_KELVIN(t) ((t)*10+2732)
95 struct device_attribute attr;
96 char name[THERMAL_NAME_LENGTH];
99 struct thermal_zone_device {
101 char type[THERMAL_NAME_LENGTH];
102 struct device device;
103 struct thermal_attr *trip_temp_attrs;
104 struct thermal_attr *trip_type_attrs;
105 struct thermal_attr *trip_hyst_attrs;
112 int last_temperature;
114 unsigned int forced_passive;
115 const struct thermal_zone_device_ops *ops;
116 struct list_head cooling_devices;
118 struct mutex lock; /* protect cooling devices list */
119 struct list_head node;
120 struct delayed_work poll_queue;
122 /* Adding event notification support elements */
123 #define THERMAL_GENL_FAMILY_NAME "thermal_event"
124 #define THERMAL_GENL_VERSION 0x01
125 #define THERMAL_GENL_MCAST_GROUP_NAME "thermal_mc_group"
134 struct thermal_genl_event {
138 /* attributes of thermal_genl_family */
140 THERMAL_GENL_ATTR_UNSPEC,
141 THERMAL_GENL_ATTR_EVENT,
142 __THERMAL_GENL_ATTR_MAX,
144 #define THERMAL_GENL_ATTR_MAX (__THERMAL_GENL_ATTR_MAX - 1)
146 /* commands supported by the thermal_genl_family */
148 THERMAL_GENL_CMD_UNSPEC,
149 THERMAL_GENL_CMD_EVENT,
150 __THERMAL_GENL_CMD_MAX,
152 #define THERMAL_GENL_CMD_MAX (__THERMAL_GENL_CMD_MAX - 1)
154 struct thermal_zone_device *thermal_zone_device_register(char *, int, int,
155 void *, const struct thermal_zone_device_ops *, int tc1,
156 int tc2, int passive_freq, int polling_freq);
157 void thermal_zone_device_unregister(struct thermal_zone_device *);
159 int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
160 struct thermal_cooling_device *);
161 int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int,
162 struct thermal_cooling_device *);
163 void thermal_zone_device_update(struct thermal_zone_device *);
164 struct thermal_cooling_device *thermal_cooling_device_register(char *, void *,
165 const struct thermal_cooling_device_ops *);
166 void thermal_cooling_device_unregister(struct thermal_cooling_device *);
169 extern int thermal_generate_netlink_event(u32 orig, enum events event);
171 static inline int thermal_generate_netlink_event(u32 orig, enum events event)
177 #endif /* __THERMAL_H__ */