diff options
Diffstat (limited to 'include/linux/thermal.h')
| -rw-r--r-- | include/linux/thermal.h | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/include/linux/thermal.h b/include/linux/thermal.h new file mode 100644 index 00000000..5269d34c --- /dev/null +++ b/include/linux/thermal.h @@ -0,0 +1,188 @@ +/* + * 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> + * Copyright (C) 2011 Freescale Semiconductor, Inc. + * + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * 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> + +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, +}; + +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 *, 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_crit_temp) (struct thermal_zone_device *, unsigned long *); + 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); +}; + +#define THERMAL_TRIPS_NONE -1 +#define THERMAL_MAX_TRIPS 12 +#define THERMAL_NAME_LENGTH 20 +struct thermal_cooling_device { + int id; + char type[THERMAL_NAME_LENGTH]; + struct device device; + void *devdata; + const 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) + +#if defined(CONFIG_THERMAL_HWMON) +/* thermal zone devices with the same type share one hwmon device */ +struct thermal_hwmon_device { + char type[THERMAL_NAME_LENGTH]; + struct device *device; + int count; + struct list_head tz_list; + struct list_head node; +}; + +struct thermal_hwmon_attr { + struct device_attribute attr; + char name[16]; +}; +#endif + +struct thermal_zone_device { + int id; + char type[THERMAL_NAME_LENGTH]; + struct device device; + void *devdata; + int trips; + int tc1; + int tc2; + int passive_delay; + int polling_delay; + int last_temperature; + bool passive; + unsigned int forced_passive; + const 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 delayed_work poll_queue; +#if defined(CONFIG_THERMAL_HWMON) + struct list_head hwmon_node; + struct thermal_hwmon_device *hwmon; + struct thermal_hwmon_attr temp_input; /* hwmon sys attr */ + struct thermal_hwmon_attr temp_crit; /* hwmon sys attr */ +#endif +}; +/* 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_group" + +enum events { + THERMAL_AUX0, + THERMAL_AUX1, + THERMAL_CRITICAL, + THERMAL_DEV_FAULT, +}; + +struct thermal_genl_event { + u32 orig; + enum events event; +}; +/* 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 *thermal_zone_device_register(char *, int, void *, + const struct thermal_zone_device_ops *, int tc1, int tc2, + int passive_freq, int polling_freq); +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 *); +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 *); + +#ifdef CONFIG_NET +extern int generate_netlink_event(u32 orig, enum events event); +#else +static inline int generate_netlink_event(u32 orig, enum events event) +{ + return 0; +} +#endif + +#endif /* __THERMAL_H__ */ |