EVOLUTION-MANAGER

Edit File: thermal.h

/* * 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> #include <linux/workqueue.h> #define THERMAL_TRIPS_NONE -1 #define THERMAL_MAX_TRIPS 12 #define THERMAL_NAME_LENGTH 20 /* invalid cooling state */ #define THERMAL_CSTATE_INVALID -1UL /* No upper/lower limit requirement */ #define THERMAL_NO_LIMIT THERMAL_CSTATE_INVALID /* use value, which < 0K, to indicate an invalid/uninitialized temperature */ #define THERMAL_TEMP_INVALID -274000 /* Unit conversion macros */ #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) /* Adding event notification support elements */ #define THERMAL_GENL_FAMILY_NAME "thermal_event" #define THERMAL_GENL_VERSION 0x01 #define THERMAL_GENL_MCAST_GROUP_NAME "thermal_mc_grp" /* Default Thermal Governor */ #if defined(CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE) #define DEFAULT_THERMAL_GOVERNOR "step_wise" #elif defined(CONFIG_THERMAL_DEFAULT_GOV_FAIR_SHARE) #define DEFAULT_THERMAL_GOVERNOR "fair_share" #elif defined(CONFIG_THERMAL_DEFAULT_GOV_USER_SPACE) #define DEFAULT_THERMAL_GOVERNOR "user_space" #endif struct thermal_zone_device; struct thermal_cooling_device; enum thermal_device_mode { THERMAL_DEVICE_DISABLED = 0, THERMAL_DEVICE_ENABLED, }; enum thermal_trip_type { THERMAL_TRIP_ACTIVE = 0, THERMAL_TRIP_PASSIVE, THERMAL_TRIP_HOT, THERMAL_TRIP_CRITICAL, }; enum thermal_trend { THERMAL_TREND_STABLE, /* temperature is stable */ THERMAL_TREND_RAISING, /* temperature is raising */ THERMAL_TREND_DROPPING, /* temperature is dropping */ THERMAL_TREND_RAISE_FULL, /* apply highest cooling action */ THERMAL_TREND_DROP_FULL, /* apply lowest cooling action */ }; /* Events supported by Thermal Netlink */ enum events { THERMAL_AUX0, THERMAL_AUX1, THERMAL_CRITICAL, THERMAL_DEV_FAULT, }; /* attributes of thermal_genl_family */ enum { THERMAL_GENL_ATTR_UNSPEC, THERMAL_GENL_ATTR_EVENT, __THERMAL_GENL_ATTR_MAX, }; #define THERMAL_GENL_ATTR_MAX (__THERMAL_GENL_ATTR_MAX - 1) /* commands supported by the thermal_genl_family */ enum { THERMAL_GENL_CMD_UNSPEC, THERMAL_GENL_CMD_EVENT, __THERMAL_GENL_CMD_MAX, }; #define THERMAL_GENL_CMD_MAX (__THERMAL_GENL_CMD_MAX - 1) 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 *, unsigned long *); int (*get_mode) (struct thermal_zone_device *, enum thermal_device_mode *); int (*set_mode) (struct thermal_zone_device *, enum thermal_device_mode); int (*get_trip_type) (struct thermal_zone_device *, int, enum thermal_trip_type *); int (*get_trip_temp) (struct thermal_zone_device *, int, unsigned long *); int (*set_trip_temp) (struct thermal_zone_device *, int, unsigned long); int (*get_trip_hyst) (struct thermal_zone_device *, int, unsigned long *); int (*set_trip_hyst) (struct thermal_zone_device *, int, unsigned long); int (*get_crit_temp) (struct thermal_zone_device *, unsigned long *); int (*set_emul_temp) (struct thermal_zone_device *, unsigned long); int (*get_trend) (struct thermal_zone_device *, int, enum thermal_trend *); int (*notify) (struct thermal_zone_device *, int, enum thermal_trip_type); }; struct thermal_cooling_device_ops { int (*get_max_state) (struct thermal_cooling_device *, unsigned long *); int (*get_cur_state) (struct thermal_cooling_device *, unsigned long *); int (*set_cur_state) (struct thermal_cooling_device *, unsigned long); }; struct thermal_cooling_device { int id; char type[THERMAL_NAME_LENGTH]; struct device device; void *devdata; const struct thermal_cooling_device_ops *ops; bool updated; /* true if the cooling device does not need update */ struct mutex lock; /* protect thermal_instances list */ struct list_head thermal_instances; struct list_head node; }; struct thermal_attr { struct device_attribute attr; char name[THERMAL_NAME_LENGTH]; }; struct thermal_zone_device { int id; char type[THERMAL_NAME_LENGTH]; struct device device; struct thermal_attr *trip_temp_attrs; struct thermal_attr *trip_type_attrs; struct thermal_attr *trip_hyst_attrs; void *devdata; int trips; int passive_delay; int polling_delay; int temperature; int last_temperature; int emul_temperature; int passive; unsigned int forced_passive; const struct thermal_zone_device_ops *ops; const struct thermal_zone_params *tzp; struct thermal_governor *governor; struct list_head thermal_instances; struct idr idr; struct mutex lock; /* protect thermal_instances list */ struct list_head node; struct delayed_work poll_queue; }; /* Structure that holds thermal governor information */ struct thermal_governor { char name[THERMAL_NAME_LENGTH]; int (*throttle)(struct thermal_zone_device *tz, int trip); struct list_head governor_list; }; /* Structure that holds binding parameters for a zone */ struct thermal_bind_params { struct thermal_cooling_device *cdev; /* * This is a measure of 'how effectively these devices can * cool 'this' thermal zone. The shall be determined by platform * characterization. This is on a 'percentage' scale. * See Documentation/thermal/sysfs-api.txt for more information. */ int weight; /* * This is a bit mask that gives the binding relation between this * thermal zone and cdev, for a particular trip point. * See Documentation/thermal/sysfs-api.txt for more information. */ int trip_mask; int (*match) (struct thermal_zone_device *tz, struct thermal_cooling_device *cdev); }; /* Structure to define Thermal Zone parameters */ struct thermal_zone_params { char governor_name[THERMAL_NAME_LENGTH]; int num_tbps; /* Number of tbp entries */ struct thermal_bind_params *tbp; }; struct thermal_genl_event { u32 orig; enum events event; }; /* Function declarations */ struct thermal_zone_device *thermal_zone_device_register(const char *, int, int, void *, const struct thermal_zone_device_ops *, const struct thermal_zone_params *, int, int); void thermal_zone_device_unregister(struct thermal_zone_device *); int thermal_zone_bind_cooling_device(struct thermal_zone_device *, int, struct thermal_cooling_device *, unsigned long, unsigned long); int thermal_zone_unbind_cooling_device(struct thermal_zone_device *, int, struct thermal_cooling_device *); void thermal_zone_device_update(struct thermal_zone_device *); struct thermal_cooling_device *thermal_cooling_device_register(char *, void *, const struct thermal_cooling_device_ops *); void thermal_cooling_device_unregister(struct thermal_cooling_device *); struct thermal_zone_device *thermal_zone_get_zone_by_name(const char *name); int thermal_zone_get_temp(struct thermal_zone_device *tz, unsigned long *temp); int get_tz_trend(struct thermal_zone_device *, int); struct thermal_instance *get_thermal_instance(struct thermal_zone_device *, struct thermal_cooling_device *, int); void thermal_cdev_update(struct thermal_cooling_device *); void thermal_notify_framework(struct thermal_zone_device *, int); #ifdef CONFIG_NET extern int thermal_generate_netlink_event(struct thermal_zone_device *tz, enum events event); #else static inline int thermal_generate_netlink_event(struct thermal_zone_device *tz, enum events event) { return 0; } #endif #endif /* __THERMAL_H__ */