Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
31struct thermal_zone_device;
32struct thermal_cooling_device;
33
34struct thermal_zone_device_ops {
35 int (*bind) (struct thermal_zone_device *,
36 struct thermal_cooling_device *);
37 int (*unbind) (struct thermal_zone_device *,
38 struct thermal_cooling_device *);
39 int (*get_temp) (struct thermal_zone_device *, char *);
40 int (*get_mode) (struct thermal_zone_device *, char *);
41 int (*set_mode) (struct thermal_zone_device *, const char *);
42 int (*get_trip_type) (struct thermal_zone_device *, int, char *);
43 int (*get_trip_temp) (struct thermal_zone_device *, int, char *);
44};
45
46struct thermal_cooling_device_ops {
47 int (*get_max_state) (struct thermal_cooling_device *, char *);
48 int (*get_cur_state) (struct thermal_cooling_device *, char *);
49 int (*set_cur_state) (struct thermal_cooling_device *, unsigned int);
50};
51
52#define THERMAL_TRIPS_NONE -1
53#define THERMAL_MAX_TRIPS 10
54#define THERMAL_NAME_LENGTH 20
55struct thermal_cooling_device {
56 int id;
57 char type[THERMAL_NAME_LENGTH];
58 struct device device;
59 void *devdata;
60 struct thermal_cooling_device_ops *ops;
61 struct list_head node;
62};
63
64#define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \
65 ((long)t-2732+5)/10 : ((long)t-2732-5)/10)
66#define CELSIUS_TO_KELVIN(t) ((t)*10+2732)
67
68struct thermal_zone_device {
69 int id;
70 char type[THERMAL_NAME_LENGTH];
71 struct device device;
72 void *devdata;
73 int trips;
74 struct thermal_zone_device_ops *ops;
75 struct list_head cooling_devices;
76 struct idr idr;
77 struct mutex lock; /* protect cooling devices list */
78 struct list_head node;
79};
80
81struct thermal_zone_device *thermal_zone_device_register(char *, int, void *,
82 struct
83 thermal_zone_device_ops
84 *);
85void thermal_zone_device_unregister(struct thermal_zone_device *);
86
87int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
88 struct thermal_cooling_device *);
89int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int,
90 struct thermal_cooling_device *);
91
92#ifdef CONFIG_THERMAL
93struct thermal_cooling_device *thermal_cooling_device_register(char *, void *,
94 struct
95 thermal_cooling_device_ops
96 *);
97void thermal_cooling_device_unregister(struct thermal_cooling_device *);
98#else
99static inline struct thermal_cooling_device
100*thermal_cooling_device_register(char *c, void *v,
101 struct thermal_cooling_device_ops *t)
102{
103 return NULL;
104}
105static inline
106 void thermal_cooling_device_unregister(struct thermal_cooling_device *t)
107{
108};
109#endif
110
111#endif /* __THERMAL_H__ */