57c5b2ec90
Now that the governor table is in place and the macro allows to browse the table, declare the governor so the entry is added in the governor table in the init section. The [un]register_thermal_governors function does no longer need to use the exported [un]register thermal governor's specific function which in turn call the [un]register_thermal_governor. The governors are fully self-encapsulated. The cyclic dependency is no longer needed, remove it. Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
120 lines
4 KiB
C
120 lines
4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* thermal_core.h
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*
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* Copyright (C) 2012 Intel Corp
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* Author: Durgadoss R <durgadoss.r@intel.com>
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*/
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#ifndef __THERMAL_CORE_H__
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#define __THERMAL_CORE_H__
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#include <linux/device.h>
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#include <linux/thermal.h>
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/* Initial state of a cooling device during binding */
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#define THERMAL_NO_TARGET -1UL
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/* Init section thermal table */
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extern struct thermal_governor *__governor_thermal_table[];
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extern struct thermal_governor *__governor_thermal_table_end[];
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#define THERMAL_TABLE_ENTRY(table, name) \
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static typeof(name) *__thermal_table_entry_##name \
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__used __section(__##table##_thermal_table) = &name
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#define THERMAL_GOVERNOR_DECLARE(name) THERMAL_TABLE_ENTRY(governor, name)
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#define for_each_governor_table(__governor) \
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for (__governor = __governor_thermal_table; \
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__governor < __governor_thermal_table_end; \
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__governor++)
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/*
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* This structure is used to describe the behavior of
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* a certain cooling device on a certain trip point
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* in a certain thermal zone
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*/
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struct thermal_instance {
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int id;
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char name[THERMAL_NAME_LENGTH];
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struct thermal_zone_device *tz;
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struct thermal_cooling_device *cdev;
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int trip;
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bool initialized;
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unsigned long upper; /* Highest cooling state for this trip point */
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unsigned long lower; /* Lowest cooling state for this trip point */
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unsigned long target; /* expected cooling state */
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char attr_name[THERMAL_NAME_LENGTH];
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struct device_attribute attr;
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char weight_attr_name[THERMAL_NAME_LENGTH];
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struct device_attribute weight_attr;
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struct list_head tz_node; /* node in tz->thermal_instances */
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struct list_head cdev_node; /* node in cdev->thermal_instances */
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unsigned int weight; /* The weight of the cooling device */
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};
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#define to_thermal_zone(_dev) \
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container_of(_dev, struct thermal_zone_device, device)
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#define to_cooling_device(_dev) \
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container_of(_dev, struct thermal_cooling_device, device)
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int thermal_register_governor(struct thermal_governor *);
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void thermal_unregister_governor(struct thermal_governor *);
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void thermal_zone_device_rebind_exception(struct thermal_zone_device *,
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const char *, size_t);
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void thermal_zone_device_unbind_exception(struct thermal_zone_device *,
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const char *, size_t);
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int thermal_zone_device_set_policy(struct thermal_zone_device *, char *);
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int thermal_build_list_of_policies(char *buf);
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/* sysfs I/F */
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int thermal_zone_create_device_groups(struct thermal_zone_device *, int);
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void thermal_zone_destroy_device_groups(struct thermal_zone_device *);
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void thermal_cooling_device_setup_sysfs(struct thermal_cooling_device *);
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void thermal_cooling_device_destroy_sysfs(struct thermal_cooling_device *cdev);
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/* used only at binding time */
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ssize_t trip_point_show(struct device *, struct device_attribute *, char *);
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ssize_t weight_show(struct device *, struct device_attribute *, char *);
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ssize_t weight_store(struct device *, struct device_attribute *, const char *,
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size_t);
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#ifdef CONFIG_THERMAL_STATISTICS
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void thermal_cooling_device_stats_update(struct thermal_cooling_device *cdev,
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unsigned long new_state);
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#else
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static inline void
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thermal_cooling_device_stats_update(struct thermal_cooling_device *cdev,
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unsigned long new_state) {}
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#endif /* CONFIG_THERMAL_STATISTICS */
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/* device tree support */
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#ifdef CONFIG_THERMAL_OF
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int of_parse_thermal_zones(void);
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void of_thermal_destroy_zones(void);
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int of_thermal_get_ntrips(struct thermal_zone_device *);
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bool of_thermal_is_trip_valid(struct thermal_zone_device *, int);
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const struct thermal_trip *
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of_thermal_get_trip_points(struct thermal_zone_device *);
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#else
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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)
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{
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return 0;
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}
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static inline bool of_thermal_is_trip_valid(struct thermal_zone_device *tz,
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int trip)
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{
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return false;
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}
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static inline const struct thermal_trip *
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of_thermal_get_trip_points(struct thermal_zone_device *tz)
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{
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return NULL;
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}
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#endif
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#endif /* __THERMAL_CORE_H__ */
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