Release 4.18 drivers/thermal/thermal_core.h

Directory: drivers/thermal
/* SPDX-License-Identifier: GPL-2.0 */
/*
 *  thermal_core.h
 *
 *  Copyright (C) 2012  Intel Corp
 *  Author: Durgadoss R <durgadoss.r@intel.com>
 */

#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_zone_destroy_device_groups(struct thermal_zone_device *);
void thermal_cooling_device_setup_sysfs(struct thermal_cooling_device *);
void thermal_cooling_device_destroy_sysfs(struct thermal_cooling_device *cdev);
/* used only at binding time */
ssize_t trip_point_show(struct device *, struct device_attribute *, char *);
ssize_t weight_show(struct device *, struct device_attribute *, char *);
ssize_t weight_store(struct device *, struct device_attribute *, const char *,
		     size_t);

#ifdef CONFIG_THERMAL_STATISTICS
void thermal_cooling_device_stats_update(struct thermal_cooling_device *cdev,
					 unsigned long new_state);
#else

static inline void

thermal_cooling_device_stats_update(struct thermal_cooling_device *cdev,
				    unsigned long new_state) {}
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#endif /* CONFIG_THERMAL_STATISTICS */

#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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Javi Merino 50 8.03% 2 8.70%
Viresh Kumar 48 7.70% 2 8.70%
Peter Feuerer 40 6.42% 1 4.35%
Christophe Jaillet 8 1.28% 1 4.35%
Kapileshwar Singh 5 0.80% 1 4.35%
Lina Iyer 2 0.32% 1 4.35%
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Total 623 100.00% 23 100.00%
Directory: drivers/thermal

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Release 4.18 drivers/thermal/thermal_core.h

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