Root/drivers/thermal/thermal_core.h

1/*
2 * thermal_core.h
3 *
4 * Copyright (C) 2012 Intel Corp
5 * Author: Durgadoss R <durgadoss.r@intel.com>
6 *
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; version 2 of the License.
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
20 *
21 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
22 */
23
24#ifndef __THERMAL_CORE_H__
25#define __THERMAL_CORE_H__
26
27#include <linux/device.h>
28#include <linux/thermal.h>
29
30/* Initial state of a cooling device during binding */
31#define THERMAL_NO_TARGET -1UL
32
33/*
34 * This structure is used to describe the behavior of
35 * a certain cooling device on a certain trip point
36 * in a certain thermal zone
37 */
38struct thermal_instance {
39    int id;
40    char name[THERMAL_NAME_LENGTH];
41    struct thermal_zone_device *tz;
42    struct thermal_cooling_device *cdev;
43    int trip;
44    unsigned long upper; /* Highest cooling state for this trip point */
45    unsigned long lower; /* Lowest cooling state for this trip point */
46    unsigned long target; /* expected cooling state */
47    char attr_name[THERMAL_NAME_LENGTH];
48    struct device_attribute attr;
49    struct list_head tz_node; /* node in tz->thermal_instances */
50    struct list_head cdev_node; /* node in cdev->thermal_instances */
51};
52
53#endif /* __THERMAL_CORE_H__ */
54

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