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/* SPDX-License-Identifier: LGPL-2.1+ */
/* Copyright (C) 2022, Linaro Ltd - Daniel Lezcano <daniel.lezcano@linaro.org> */
#ifndef __LIBTHERMAL_H
#define __LIBTHERMAL_H
#include <linux/thermal.h>
#include <sys/types.h>
#ifndef LIBTHERMAL_API
#define LIBTHERMAL_API __attribute__((visibility("default")))
#endif
#ifndef THERMAL_THRESHOLD_WAY_UP
#define THERMAL_THRESHOLD_WAY_UP 0x1
#endif
#ifndef THERMAL_THRESHOLD_WAY_DOWN
#define THERMAL_THRESHOLD_WAY_DOWN 0x2
#endif
#ifdef __cplusplus
extern "C" {
#endif
struct thermal_sampling_ops {
int (*tz_temp)(int tz_id, int temp, void *arg);
};
struct thermal_events_ops {
int (*tz_create)(const char *name, int tz_id, void *arg);
int (*tz_delete)(int tz_id, void *arg);
int (*tz_enable)(int tz_id, void *arg);
int (*tz_disable)(int tz_id, void *arg);
int (*trip_high)(int tz_id, int trip_id, int temp, void *arg);
int (*trip_low)(int tz_id, int trip_id, int temp, void *arg);
int (*trip_add)(int tz_id, int trip_id, int type, int temp, int hyst, void *arg);
int (*trip_change)(int tz_id, int trip_id, int type, int temp, int hyst, void *arg);
int (*trip_delete)(int tz_id, int trip_id, void *arg);
int (*cdev_add)(const char *name, int cdev_id, int max_state, void *arg);
int (*cdev_delete)(int cdev_id, void *arg);
int (*cdev_update)(int cdev_id, int cur_state, void *arg);
int (*gov_change)(int tz_id, const char *gov_name, void *arg);
int (*threshold_add)(int tz_id, int temperature, int direction, void *arg);
int (*threshold_delete)(int tz_id, int temperature, int direction, void *arg);
int (*threshold_flush)(int tz_id, void *arg);
int (*threshold_up)(int tz_id, int temp, int prev_temp, void *arg);
int (*threshold_down)(int tz_id, int temp, int prev_temp, void *arg);
};
struct thermal_ops {
struct thermal_sampling_ops sampling;
struct thermal_events_ops events;
};
struct thermal_trip {
int id;
int type;
int temp;
int hyst;
};
struct thermal_threshold {
int temperature;
int direction;
};
struct thermal_zone {
int id;
int temp;
char name[THERMAL_NAME_LENGTH];
char governor[THERMAL_NAME_LENGTH];
struct thermal_trip *trip;
struct thermal_threshold *thresholds;
};
struct thermal_cdev {
int id;
char name[THERMAL_NAME_LENGTH];
int max_state;
int min_state;
int cur_state;
};
typedef enum {
THERMAL_ERROR = -1,
THERMAL_SUCCESS = 0,
} thermal_error_t;
struct thermal_handler;
typedef int (*cb_tz_t)(struct thermal_zone *, void *);
typedef int (*cb_tt_t)(struct thermal_trip *, void *);
typedef int (*cb_tc_t)(struct thermal_cdev *, void *);
typedef int (*cb_th_t)(struct thermal_threshold *, void *);
LIBTHERMAL_API int for_each_thermal_zone(struct thermal_zone *tz, cb_tz_t cb, void *arg);
LIBTHERMAL_API int for_each_thermal_trip(struct thermal_trip *tt, cb_tt_t cb, void *arg);
LIBTHERMAL_API int for_each_thermal_cdev(struct thermal_cdev *cdev, cb_tc_t cb, void *arg);
LIBTHERMAL_API int for_each_thermal_threshold(struct thermal_threshold *th, cb_th_t cb, void *arg);
LIBTHERMAL_API struct thermal_zone *thermal_zone_find_by_name(struct thermal_zone *tz,
const char *name);
LIBTHERMAL_API struct thermal_zone *thermal_zone_find_by_id(struct thermal_zone *tz, int id);
LIBTHERMAL_API struct thermal_zone *thermal_zone_discover(struct thermal_handler *th);
LIBTHERMAL_API struct thermal_handler *thermal_init(struct thermal_ops *ops);
LIBTHERMAL_API void thermal_exit(struct thermal_handler *th);
/*
* Netlink thermal events
*/
LIBTHERMAL_API thermal_error_t thermal_events_exit(struct thermal_handler *th);
LIBTHERMAL_API thermal_error_t thermal_events_init(struct thermal_handler *th);
LIBTHERMAL_API thermal_error_t thermal_events_handle(struct thermal_handler *th, void *arg);
LIBTHERMAL_API int thermal_events_fd(struct thermal_handler *th);
/*
* Netlink thermal commands
*/
LIBTHERMAL_API thermal_error_t thermal_cmd_exit(struct thermal_handler *th);
LIBTHERMAL_API thermal_error_t thermal_cmd_init(struct thermal_handler *th);
LIBTHERMAL_API thermal_error_t thermal_cmd_get_tz(struct thermal_handler *th,
struct thermal_zone **tz);
LIBTHERMAL_API thermal_error_t thermal_cmd_get_cdev(struct thermal_handler *th,
struct thermal_cdev **tc);
LIBTHERMAL_API thermal_error_t thermal_cmd_get_trip(struct thermal_handler *th,
struct thermal_zone *tz);
LIBTHERMAL_API thermal_error_t thermal_cmd_get_governor(struct thermal_handler *th,
struct thermal_zone *tz);
LIBTHERMAL_API thermal_error_t thermal_cmd_get_temp(struct thermal_handler *th,
struct thermal_zone *tz);
LIBTHERMAL_API thermal_error_t thermal_cmd_threshold_get(struct thermal_handler *th,
struct thermal_zone *tz);
LIBTHERMAL_API thermal_error_t thermal_cmd_threshold_add(struct thermal_handler *th,
struct thermal_zone *tz,
int temperature,
int direction);
LIBTHERMAL_API thermal_error_t thermal_cmd_threshold_delete(struct thermal_handler *th,
struct thermal_zone *tz,
int temperature,
int direction);
LIBTHERMAL_API thermal_error_t thermal_cmd_threshold_flush(struct thermal_handler *th,
struct thermal_zone *tz);
/*
* Netlink thermal samples
*/
LIBTHERMAL_API thermal_error_t thermal_sampling_exit(struct thermal_handler *th);
LIBTHERMAL_API thermal_error_t thermal_sampling_init(struct thermal_handler *th);
LIBTHERMAL_API thermal_error_t thermal_sampling_handle(struct thermal_handler *th, void *arg);
LIBTHERMAL_API int thermal_sampling_fd(struct thermal_handler *th);
#endif /* __LIBTHERMAL_H */
#ifdef __cplusplus
}
#endif
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