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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 | #include <linux/workqueue.h> |
31 | |
32 | struct thermal_zone_device; |
33 | struct thermal_cooling_device; |
34 | |
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 | |
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, |
60 | unsigned long *); |
61 | int (*get_crit_temp) (struct thermal_zone_device *, unsigned long *); |
62 | int (*notify) (struct thermal_zone_device *, int, |
63 | enum thermal_trip_type); |
64 | }; |
65 | |
66 | struct thermal_cooling_device_ops { |
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); |
70 | }; |
71 | |
72 | #define THERMAL_TRIPS_NONE -1 |
73 | #define THERMAL_MAX_TRIPS 12 |
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 | const struct thermal_cooling_device_ops *ops; |
81 | struct list_head node; |
82 | }; |
83 | |
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 | |
88 | #if defined(CONFIG_THERMAL_HWMON) |
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 | |
104 | struct thermal_zone_device { |
105 | int id; |
106 | char type[THERMAL_NAME_LENGTH]; |
107 | struct device device; |
108 | void *devdata; |
109 | int trips; |
110 | int tc1; |
111 | int tc2; |
112 | int passive_delay; |
113 | int polling_delay; |
114 | int last_temperature; |
115 | bool passive; |
116 | unsigned int forced_passive; |
117 | const struct thermal_zone_device_ops *ops; |
118 | struct list_head cooling_devices; |
119 | struct idr idr; |
120 | struct mutex lock; /* protect cooling devices list */ |
121 | struct list_head node; |
122 | struct delayed_work poll_queue; |
123 | #if defined(CONFIG_THERMAL_HWMON) |
124 | struct list_head hwmon_node; |
125 | struct thermal_hwmon_device *hwmon; |
126 | struct thermal_hwmon_attr temp_input; /* hwmon sys attr */ |
127 | struct thermal_hwmon_attr temp_crit; /* hwmon sys attr */ |
128 | #endif |
129 | }; |
130 | /* Adding event notification support elements */ |
131 | #define THERMAL_GENL_FAMILY_NAME "thermal_event" |
132 | #define THERMAL_GENL_VERSION 0x01 |
133 | #define THERMAL_GENL_MCAST_GROUP_NAME "thermal_mc_group" |
134 | |
135 | enum events { |
136 | THERMAL_AUX0, |
137 | THERMAL_AUX1, |
138 | THERMAL_CRITICAL, |
139 | THERMAL_DEV_FAULT, |
140 | }; |
141 | |
142 | struct thermal_genl_event { |
143 | u32 orig; |
144 | enum events event; |
145 | }; |
146 | /* attributes of thermal_genl_family */ |
147 | enum { |
148 | THERMAL_GENL_ATTR_UNSPEC, |
149 | THERMAL_GENL_ATTR_EVENT, |
150 | __THERMAL_GENL_ATTR_MAX, |
151 | }; |
152 | #define THERMAL_GENL_ATTR_MAX (__THERMAL_GENL_ATTR_MAX - 1) |
153 | |
154 | /* commands supported by the thermal_genl_family */ |
155 | enum { |
156 | THERMAL_GENL_CMD_UNSPEC, |
157 | THERMAL_GENL_CMD_EVENT, |
158 | __THERMAL_GENL_CMD_MAX, |
159 | }; |
160 | #define THERMAL_GENL_CMD_MAX (__THERMAL_GENL_CMD_MAX - 1) |
161 | |
162 | struct thermal_zone_device *thermal_zone_device_register(char *, int, void *, |
163 | const struct thermal_zone_device_ops *, int tc1, int tc2, |
164 | int passive_freq, int polling_freq); |
165 | void thermal_zone_device_unregister(struct thermal_zone_device *); |
166 | |
167 | int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int, |
168 | struct thermal_cooling_device *); |
169 | int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int, |
170 | struct thermal_cooling_device *); |
171 | void thermal_zone_device_update(struct thermal_zone_device *); |
172 | struct thermal_cooling_device *thermal_cooling_device_register(char *, void *, |
173 | const struct thermal_cooling_device_ops *); |
174 | void thermal_cooling_device_unregister(struct thermal_cooling_device *); |
175 | |
176 | #ifdef CONFIG_NET |
177 | extern int generate_netlink_event(u32 orig, enum events event); |
178 | #else |
179 | static inline int generate_netlink_event(u32 orig, enum events event) |
180 | { |
181 | return 0; |
182 | } |
183 | #endif |
184 | |
185 | #endif /* __THERMAL_H__ */ |
186 |
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