60 lines
1.3 KiB
C
60 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2019 MediaTek Inc.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/module.h>
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#include <linux/thermal.h>
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#include "thermal_core.h"
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/**
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* backward_compatible_throttle
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* @tz - thermal_zone_device
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*
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* This function update the cooler state by monitoring the current
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* temperature and trip points
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*/
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static int backward_compatible_throttle(struct thermal_zone_device *tz,
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int trip)
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{
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int trip_temp;
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struct thermal_instance *instance;
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if (trip == THERMAL_TRIPS_NONE)
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trip_temp = tz->forced_passive;
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else
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tz->ops->get_trip_temp(tz, trip, &trip_temp);
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list_for_each_entry(instance, &tz->thermal_instances, tz_node) {
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if (instance->trip != trip)
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continue;
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if (tz->temperature >= trip_temp)
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instance->target = 1;
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else
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instance->target = 0;
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instance->cdev->updated = false;
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thermal_cdev_update(instance->cdev);
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}
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return 0;
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}
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static struct thermal_governor thermal_gov_backward_compatible = {
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.name = "backward_compatible",
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.throttle = backward_compatible_throttle,
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};
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int thermal_gov_backward_compatible_register(void)
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{
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return thermal_register_governor(&thermal_gov_backward_compatible);
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}
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void thermal_gov_backward_compatible_unregister(void)
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{
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thermal_unregister_governor(&thermal_gov_backward_compatible);
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}
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