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Diffstat (limited to 'include/linux/thermal.h')
| -rw-r--r-- | include/linux/thermal.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/include/linux/thermal.h b/include/linux/thermal.h new file mode 100644 index 000000000000..bba7712cadc7 --- /dev/null +++ b/include/linux/thermal.h @@ -0,0 +1,94 @@ +/* + * thermal.h ($Revision: 0 $) + * + * Copyright (C) 2008 Intel Corp + * Copyright (C) 2008 Zhang Rui <rui.zhang@intel.com> + * Copyright (C) 2008 Sujith Thomas <sujith.thomas@intel.com> + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + */ + +#ifndef __THERMAL_H__ +#define __THERMAL_H__ + +#include <linux/idr.h> +#include <linux/device.h> + +struct thermal_zone_device; +struct thermal_cooling_device; + +struct thermal_zone_device_ops { + int (*bind) (struct thermal_zone_device *, + struct thermal_cooling_device *); + int (*unbind) (struct thermal_zone_device *, + struct thermal_cooling_device *); + int (*get_temp) (struct thermal_zone_device *, char *); + int (*get_mode) (struct thermal_zone_device *, char *); + int (*set_mode) (struct thermal_zone_device *, const char *); + int (*get_trip_type) (struct thermal_zone_device *, int, char *); + int (*get_trip_temp) (struct thermal_zone_device *, int, char *); +}; + +struct thermal_cooling_device_ops { + int (*get_max_state) (struct thermal_cooling_device *, char *); + int (*get_cur_state) (struct thermal_cooling_device *, char *); + int (*set_cur_state) (struct thermal_cooling_device *, unsigned int); +}; + +#define THERMAL_TRIPS_NONE -1 +#define THERMAL_MAX_TRIPS 10 +#define THERMAL_NAME_LENGTH 20 +struct thermal_cooling_device { + int id; + char type[THERMAL_NAME_LENGTH]; + struct device device; + void *devdata; + struct thermal_cooling_device_ops *ops; + struct list_head node; +}; + +#define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \ + ((long)t-2732+5)/10 : ((long)t-2732-5)/10) +#define CELSIUS_TO_KELVIN(t) ((t)*10+2732) + +struct thermal_zone_device { + int id; + char type[THERMAL_NAME_LENGTH]; + struct device device; + void *devdata; + int trips; + struct thermal_zone_device_ops *ops; + struct list_head cooling_devices; + struct idr idr; + struct mutex lock; /* protect cooling devices list */ + struct list_head node; +}; + +struct thermal_zone_device *thermal_zone_device_register(char *, int, void *, + struct thermal_zone_device_ops *); +void thermal_zone_device_unregister(struct thermal_zone_device *); + +int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int, + struct thermal_cooling_device *); +int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int, + struct thermal_cooling_device *); + +struct thermal_cooling_device *thermal_cooling_device_register(char *, void *, + struct thermal_cooling_device_ops *); +void thermal_cooling_device_unregister(struct thermal_cooling_device *); + +#endif /* __THERMAL_H__ */ |