121 lines
3.9 KiB
C
121 lines
3.9 KiB
C
/*
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* thermal.h ($Revision: 0 $)
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*
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* Copyright (C) 2008 Intel Corp
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* Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com>
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* Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com>
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#ifndef __THERMAL_H__
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#define __THERMAL_H__
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#include <linux/idr.h>
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#include <linux/device.h>
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struct thermal_zone_device;
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struct thermal_cooling_device;
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struct thermal_zone_device_ops {
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int (*bind) (struct thermal_zone_device *,
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struct thermal_cooling_device *);
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int (*unbind) (struct thermal_zone_device *,
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struct thermal_cooling_device *);
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int (*get_temp) (struct thermal_zone_device *, char *);
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int (*get_mode) (struct thermal_zone_device *, char *);
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int (*set_mode) (struct thermal_zone_device *, const char *);
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int (*get_trip_type) (struct thermal_zone_device *, int, char *);
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int (*get_trip_temp) (struct thermal_zone_device *, int, char *);
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int (*get_crit_temp) (struct thermal_zone_device *, unsigned long *);
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};
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struct thermal_cooling_device_ops {
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int (*get_max_state) (struct thermal_cooling_device *, char *);
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int (*get_cur_state) (struct thermal_cooling_device *, char *);
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int (*set_cur_state) (struct thermal_cooling_device *, unsigned int);
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};
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#define THERMAL_TRIPS_NONE -1
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#define THERMAL_MAX_TRIPS 12
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#define THERMAL_NAME_LENGTH 20
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struct thermal_cooling_device {
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int id;
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char type[THERMAL_NAME_LENGTH];
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struct device device;
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void *devdata;
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struct thermal_cooling_device_ops *ops;
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struct list_head node;
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};
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#define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \
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((long)t-2732+5)/10 : ((long)t-2732-5)/10)
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#define CELSIUS_TO_KELVIN(t) ((t)*10+2732)
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#if defined(CONFIG_THERMAL_HWMON)
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/* thermal zone devices with the same type share one hwmon device */
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struct thermal_hwmon_device {
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char type[THERMAL_NAME_LENGTH];
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struct device *device;
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int count;
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struct list_head tz_list;
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struct list_head node;
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};
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struct thermal_hwmon_attr {
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struct device_attribute attr;
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char name[16];
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};
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#endif
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struct thermal_zone_device {
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int id;
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char type[THERMAL_NAME_LENGTH];
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struct device device;
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void *devdata;
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int trips;
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struct thermal_zone_device_ops *ops;
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struct list_head cooling_devices;
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struct idr idr;
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struct mutex lock; /* protect cooling devices list */
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struct list_head node;
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#if defined(CONFIG_THERMAL_HWMON)
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struct list_head hwmon_node;
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struct thermal_hwmon_device *hwmon;
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struct thermal_hwmon_attr temp_input; /* hwmon sys attr */
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struct thermal_hwmon_attr temp_crit; /* hwmon sys attr */
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#endif
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};
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struct thermal_zone_device *thermal_zone_device_register(char *, int, void *,
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struct
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thermal_zone_device_ops
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*);
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void thermal_zone_device_unregister(struct thermal_zone_device *);
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int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int,
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struct thermal_cooling_device *);
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int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int,
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struct thermal_cooling_device *);
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struct thermal_cooling_device *thermal_cooling_device_register(char *, void *,
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struct
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thermal_cooling_device_ops
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*);
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void thermal_cooling_device_unregister(struct thermal_cooling_device *);
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#endif /* __THERMAL_H__ */
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