Stricted
67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
#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 temperature and trip points
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*/
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static int backward_compatible_throttle(struct thermal_zone_device *tz, int trip)
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{
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long 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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}
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/* mutex_lock(&tz->lock); */
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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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/* mutex_unlock(&tz->lock); */
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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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/* .owner = THIS_MODULE, */
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};
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static int __init thermal_gov_backward_compatible_init(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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static void __exit thermal_gov_backward_compatible_exit(void)
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{
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thermal_unregister_governor(&thermal_gov_backward_compatible);
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}
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/* This should load after thermal framework */
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fs_initcall(thermal_gov_backward_compatible_init);
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module_exit(thermal_gov_backward_compatible_exit);
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MODULE_AUTHOR("Weiyi Lu");
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MODULE_DESCRIPTION("A backward compatible Thermal governor");
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MODULE_LICENSE("GPL");
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