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>
31 struct thermal_zone_device
;
32 struct thermal_cooling_device
;
34 enum thermal_device_mode
{
35 THERMAL_DEVICE_DISABLED
= 0,
36 THERMAL_DEVICE_ENABLED
,
39 enum thermal_trip_type
{
40 THERMAL_TRIP_ACTIVE
= 0,
43 THERMAL_TRIP_CRITICAL
,
46 struct thermal_zone_device_ops
{
47 int (*bind
) (struct thermal_zone_device
*,
48 struct thermal_cooling_device
*);
49 int (*unbind
) (struct thermal_zone_device
*,
50 struct thermal_cooling_device
*);
51 int (*get_temp
) (struct thermal_zone_device
*, unsigned long *);
52 int (*get_mode
) (struct thermal_zone_device
*,
53 enum thermal_device_mode
*);
54 int (*set_mode
) (struct thermal_zone_device
*,
55 enum thermal_device_mode
);
56 int (*get_trip_type
) (struct thermal_zone_device
*, int,
57 enum thermal_trip_type
*);
58 int (*get_trip_temp
) (struct thermal_zone_device
*, int,
60 int (*get_crit_temp
) (struct thermal_zone_device
*, unsigned long *);
63 struct thermal_cooling_device_ops
{
64 int (*get_max_state
) (struct thermal_cooling_device
*, unsigned long *);
65 int (*get_cur_state
) (struct thermal_cooling_device
*, unsigned long *);
66 int (*set_cur_state
) (struct thermal_cooling_device
*, unsigned long);
69 #define THERMAL_TRIPS_NONE -1
70 #define THERMAL_MAX_TRIPS 12
71 #define THERMAL_NAME_LENGTH 20
72 struct thermal_cooling_device
{
74 char type
[THERMAL_NAME_LENGTH
];
77 struct thermal_cooling_device_ops
*ops
;
78 struct list_head node
;
81 #define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \
82 ((long)t-2732+5)/10 : ((long)t-2732-5)/10)
83 #define CELSIUS_TO_KELVIN(t) ((t)*10+2732)
85 #if defined(CONFIG_THERMAL_HWMON)
86 /* thermal zone devices with the same type share one hwmon device */
87 struct thermal_hwmon_device
{
88 char type
[THERMAL_NAME_LENGTH
];
89 struct device
*device
;
91 struct list_head tz_list
;
92 struct list_head node
;
95 struct thermal_hwmon_attr
{
96 struct device_attribute attr
;
101 struct thermal_zone_device
{
103 char type
[THERMAL_NAME_LENGTH
];
104 struct device device
;
107 struct thermal_zone_device_ops
*ops
;
108 struct list_head cooling_devices
;
110 struct mutex lock
; /* protect cooling devices list */
111 struct list_head node
;
112 #if defined(CONFIG_THERMAL_HWMON)
113 struct list_head hwmon_node
;
114 struct thermal_hwmon_device
*hwmon
;
115 struct thermal_hwmon_attr temp_input
; /* hwmon sys attr */
116 struct thermal_hwmon_attr temp_crit
; /* hwmon sys attr */
120 struct thermal_zone_device
*thermal_zone_device_register(char *, int, void *,
122 thermal_zone_device_ops
124 void thermal_zone_device_unregister(struct thermal_zone_device
*);
126 int thermal_zone_bind_cooling_device(struct thermal_zone_device
*, int,
127 struct thermal_cooling_device
*);
128 int thermal_zone_unbind_cooling_device(struct thermal_zone_device
*, int,
129 struct thermal_cooling_device
*);
130 struct thermal_cooling_device
*thermal_cooling_device_register(char *, void *,
132 thermal_cooling_device_ops
134 void thermal_cooling_device_unregister(struct thermal_cooling_device
*);
136 #endif /* __THERMAL_H__ */