linux-imx

/* 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 *);