Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *  user_space.c - A simple user space Thermal events notifier
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *  Copyright (C) 2012 Intel Corp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *  Copyright (C) 2012 Durgadoss R <durgadoss.r@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/thermal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include "thermal_core.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)  * notify_user_space - Notifies user space about thermal events
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)  * @tz: thermal_zone_device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)  * @trip: trip point index
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)  * This function notifies the user space through UEvents.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static int notify_user_space(struct thermal_zone_device *tz, int trip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	char *thermal_prop[5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	mutex_lock(&tz->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	thermal_prop[0] = kasprintf(GFP_KERNEL, "NAME=%s", tz->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	thermal_prop[1] = kasprintf(GFP_KERNEL, "TEMP=%d", tz->temperature);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	thermal_prop[2] = kasprintf(GFP_KERNEL, "TRIP=%d", trip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	thermal_prop[3] = kasprintf(GFP_KERNEL, "EVENT=%d", tz->notify_event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	thermal_prop[4] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	kobject_uevent_env(&tz->device.kobj, KOBJ_CHANGE, thermal_prop);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	for (i = 0; i < 4; ++i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 		kfree(thermal_prop[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	mutex_unlock(&tz->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static struct thermal_governor thermal_gov_user_space = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	.name		= "user_space",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	.throttle	= notify_user_space,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) THERMAL_GOVERNOR_DECLARE(thermal_gov_user_space);