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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
32struct thermal_zone_device;
33struct thermal_cooling_device;
34
35enum thermal_device_mode {
36 THERMAL_DEVICE_DISABLED = 0,
37 THERMAL_DEVICE_ENABLED,
38};
39
40enum thermal_trip_type {
41 THERMAL_TRIP_ACTIVE = 0,
42 THERMAL_TRIP_PASSIVE,
43 THERMAL_TRIP_HOT,
44 THERMAL_TRIP_CRITICAL,
45};
46
47struct 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
66struct 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
75struct 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
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
90struct 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
98struct thermal_hwmon_attr {
99 struct device_attribute attr;
100 char name[16];
101};
102#endif
103
104struct 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 struct thermal_zone_device_ops *ops;
118 struct list_head cooling_devices;
119 struct idr idr;
120 struct mutex lock;
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;
127 struct thermal_hwmon_attr temp_crit;
128#endif
129};
130
131struct thermal_zone_device *thermal_zone_device_register(char *, int, void *,
132 struct
133 thermal_zone_device_ops
134 *, int tc1, int tc2,
135 int passive_freq,
136 int polling_freq);
137void thermal_zone_device_unregister(struct thermal_zone_device *);
138
139int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
140 struct thermal_cooling_device *);
141int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int,
142 struct thermal_cooling_device *);
143void thermal_zone_device_update(struct thermal_zone_device *);
144struct thermal_cooling_device *thermal_cooling_device_register(char *, void *,
145 struct
146 thermal_cooling_device_ops
147 *);
148void thermal_cooling_device_unregister(struct thermal_cooling_device *);
149
150#endif
151
