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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/thermal.h>
#include "thermal_core.h"
/**
* backward_compatible_throttle
* @tz - thermal_zone_device
*
* This function update the cooler state by monitoring the current temperature and trip points
*/
static int backward_compatible_throttle(struct thermal_zone_device *tz, int trip)
{
long trip_temp;
struct thermal_instance *instance;
if (trip == THERMAL_TRIPS_NONE) {
trip_temp = tz->forced_passive;
} else {
tz->ops->get_trip_temp(tz, trip, &trip_temp);
}
/* mutex_lock(&tz->lock); */
list_for_each_entry(instance, &tz->thermal_instances, tz_node) {
if (instance->trip != trip)
continue;
if (tz->temperature >= trip_temp)
instance->target = 1;
else
instance->target = 0;
instance->cdev->updated = false;
thermal_cdev_update(instance->cdev);
}
/* mutex_unlock(&tz->lock); */
return 0;
}
static struct thermal_governor thermal_gov_backward_compatible = {
.name = "backward_compatible",
.throttle = backward_compatible_throttle,
/* .owner = THIS_MODULE, */
};
static int __init thermal_gov_backward_compatible_init(void)
{
return thermal_register_governor(&thermal_gov_backward_compatible);
}
static void __exit thermal_gov_backward_compatible_exit(void)
{
thermal_unregister_governor(&thermal_gov_backward_compatible);
}
/* This should load after thermal framework */
fs_initcall(thermal_gov_backward_compatible_init);
module_exit(thermal_gov_backward_compatible_exit);
MODULE_AUTHOR("Weiyi Lu");
MODULE_DESCRIPTION("A backward compatible Thermal governor");
MODULE_LICENSE("GPL");
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