// SPDX-License-Identifier: GPL-2.0-only
|
/*
|
* user_space.c - A simple user space Thermal events notifier
|
*
|
* Copyright (C) 2012 Intel Corp
|
* Copyright (C) 2012 Durgadoss R <durgadoss.r@intel.com>
|
*
|
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
*
|
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
*/
|
|
#include <linux/slab.h>
|
#include <linux/thermal.h>
|
|
#include "thermal_core.h"
|
|
/**
|
* notify_user_space - Notifies user space about thermal events
|
* @tz: thermal_zone_device
|
* @trip: trip point index
|
*
|
* This function notifies the user space through UEvents.
|
*/
|
static int notify_user_space(struct thermal_zone_device *tz, int trip)
|
{
|
char *thermal_prop[5];
|
int i;
|
|
mutex_lock(&tz->lock);
|
thermal_prop[0] = kasprintf(GFP_KERNEL, "NAME=%s", tz->type);
|
thermal_prop[1] = kasprintf(GFP_KERNEL, "TEMP=%d", tz->temperature);
|
thermal_prop[2] = kasprintf(GFP_KERNEL, "TRIP=%d", trip);
|
thermal_prop[3] = kasprintf(GFP_KERNEL, "EVENT=%d", tz->notify_event);
|
thermal_prop[4] = NULL;
|
kobject_uevent_env(&tz->device.kobj, KOBJ_CHANGE, thermal_prop);
|
for (i = 0; i < 4; ++i)
|
kfree(thermal_prop[i]);
|
mutex_unlock(&tz->lock);
|
return 0;
|
}
|
|
static struct thermal_governor thermal_gov_user_space = {
|
.name = "user_space",
|
.throttle = notify_user_space,
|
};
|
THERMAL_GOVERNOR_DECLARE(thermal_gov_user_space);
|
