Release 4.10 drivers/thermal/thermal_core.h

Directory: drivers/thermal
/*
 *  thermal_core.h
 *
 *  Copyright (C) 2012  Intel Corp
 *  Author: Durgadoss R <durgadoss.r@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_CORE_H__

#define __THERMAL_CORE_H__

#include <linux/device.h>
#include <linux/thermal.h>

/* Initial state of a cooling device during binding */

#define THERMAL_NO_TARGET -1UL

/*
 * This structure is used to describe the behavior of
 * a certain cooling device on a certain trip point
 * in a certain thermal zone
 */

struct thermal_instance {
	
int id;
	
char name[THERMAL_NAME_LENGTH];
	
struct thermal_zone_device *tz;
	
struct thermal_cooling_device *cdev;
	
int trip;
	
bool initialized;
	
unsigned long upper;	/* Highest cooling state for this trip point */
	
unsigned long lower;	/* Lowest cooling state for this trip point */
	
unsigned long target;	/* expected cooling state */
	
char attr_name[THERMAL_NAME_LENGTH];
	
struct device_attribute attr;
	
char weight_attr_name[THERMAL_NAME_LENGTH];
	
struct device_attribute weight_attr;
	
struct list_head tz_node; /* node in tz->thermal_instances */
	
struct list_head cdev_node; /* node in cdev->thermal_instances */
	
unsigned int weight; /* The weight of the cooling device */
};


#define to_thermal_zone(_dev) \
	container_of(_dev, struct thermal_zone_device, device)


#define to_cooling_device(_dev)	\
	container_of(_dev, struct thermal_cooling_device, device)

int thermal_register_governor(struct thermal_governor *);
void thermal_unregister_governor(struct thermal_governor *);
void thermal_zone_device_rebind_exception(struct thermal_zone_device *,
					  const char *, size_t);
void thermal_zone_device_unbind_exception(struct thermal_zone_device *,
					  const char *, size_t);
int thermal_zone_device_set_policy(struct thermal_zone_device *, char *);
int thermal_build_list_of_policies(char *buf);

/* sysfs I/F */
int thermal_zone_create_device_groups(struct thermal_zone_device *, int);
void thermal_cooling_device_setup_sysfs(struct thermal_cooling_device *);
/* used only at binding time */
ssize_t
thermal_cooling_device_trip_point_show(struct device *,
				       struct device_attribute *, char *);
ssize_t thermal_cooling_device_weight_show(struct device *,
					   struct device_attribute *, char *);

ssize_t thermal_cooling_device_weight_store(struct device *,
					    struct device_attribute *,
					    const char *, size_t);

#ifdef CONFIG_THERMAL_GOV_STEP_WISE
int thermal_gov_step_wise_register(void);
void thermal_gov_step_wise_unregister(void);
#else


static inline int thermal_gov_step_wise_register(void) { return 0; }
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static inline void thermal_gov_step_wise_unregister(void) {}
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#endif /* CONFIG_THERMAL_GOV_STEP_WISE */

#ifdef CONFIG_THERMAL_GOV_FAIR_SHARE
int thermal_gov_fair_share_register(void);
void thermal_gov_fair_share_unregister(void);
#else


static inline int thermal_gov_fair_share_register(void) { return 0; }
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static inline void thermal_gov_fair_share_unregister(void) {}
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#endif /* CONFIG_THERMAL_GOV_FAIR_SHARE */

#ifdef CONFIG_THERMAL_GOV_BANG_BANG
int thermal_gov_bang_bang_register(void);
void thermal_gov_bang_bang_unregister(void);
#else


static inline int thermal_gov_bang_bang_register(void) { return 0; }
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static inline void thermal_gov_bang_bang_unregister(void) {}
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#endif /* CONFIG_THERMAL_GOV_BANG_BANG */

#ifdef CONFIG_THERMAL_GOV_USER_SPACE
int thermal_gov_user_space_register(void);
void thermal_gov_user_space_unregister(void);
#else


static inline int thermal_gov_user_space_register(void) { return 0; }
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static inline void thermal_gov_user_space_unregister(void) {}
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#endif /* CONFIG_THERMAL_GOV_USER_SPACE */

#ifdef CONFIG_THERMAL_GOV_POWER_ALLOCATOR
int thermal_gov_power_allocator_register(void);
void thermal_gov_power_allocator_unregister(void);
#else


static inline int thermal_gov_power_allocator_register(void) { return 0; }
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static inline void thermal_gov_power_allocator_unregister(void) {}
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#endif /* CONFIG_THERMAL_GOV_POWER_ALLOCATOR */

/* device tree support */
#ifdef CONFIG_THERMAL_OF
int of_parse_thermal_zones(void);
void of_thermal_destroy_zones(void);
int of_thermal_get_ntrips(struct thermal_zone_device *);
bool of_thermal_is_trip_valid(struct thermal_zone_device *, int);
const struct thermal_trip *
of_thermal_get_trip_points(struct thermal_zone_device *);
#else


static inline int of_parse_thermal_zones(void) { return 0; }
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static inline void of_thermal_destroy_zones(void) { }
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static inline int of_thermal_get_ntrips(struct thermal_zone_device *tz)
{
	return 0;
}
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static inline bool of_thermal_is_trip_valid(struct thermal_zone_device *tz,
					    int trip)
{
	return false;
}
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static inline const struct thermal_trip *

of_thermal_get_trip_points(struct thermal_zone_device *tz)
{
	return NULL;
}
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#endif

#endif /* __THERMAL_CORE_H__ */
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Directory: drivers/thermal

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cregit-Linux how code gets into the kernel

Release 4.10 drivers/thermal/thermal_core.h

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