Commit | Line | Data |
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873e65bc | 1 | // SPDX-License-Identifier: GPL-2.0-only |
1cc807a2 D |
2 | /* |
3 | * user_space.c - A simple user space Thermal events notifier | |
4 | * | |
5 | * Copyright (C) 2012 Intel Corp | |
6 | * Copyright (C) 2012 Durgadoss R <durgadoss.r@intel.com> | |
7 | * | |
8 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
9 | * | |
1cc807a2 D |
10 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
11 | */ | |
12 | ||
998d924b | 13 | #include <linux/slab.h> |
6abea5d2 | 14 | #include <linux/thermal.h> |
0d76d6e1 | 15 | |
1cc807a2 D |
16 | #include "thermal_core.h" |
17 | ||
18 | /** | |
19 | * notify_user_space - Notifies user space about thermal events | |
53d256e7 AK |
20 | * @tz: thermal_zone_device |
21 | * @trip: trip point index | |
1cc807a2 D |
22 | * |
23 | * This function notifies the user space through UEvents. | |
24 | */ | |
e15cb144 | 25 | static int notify_user_space(struct thermal_zone_device *tz, int trip) |
1cc807a2 | 26 | { |
998d924b SP |
27 | char *thermal_prop[5]; |
28 | int i; | |
29 | ||
1cc807a2 | 30 | mutex_lock(&tz->lock); |
998d924b SP |
31 | thermal_prop[0] = kasprintf(GFP_KERNEL, "NAME=%s", tz->type); |
32 | thermal_prop[1] = kasprintf(GFP_KERNEL, "TEMP=%d", tz->temperature); | |
33 | thermal_prop[2] = kasprintf(GFP_KERNEL, "TRIP=%d", trip); | |
34 | thermal_prop[3] = kasprintf(GFP_KERNEL, "EVENT=%d", tz->notify_event); | |
35 | thermal_prop[4] = NULL; | |
36 | kobject_uevent_env(&tz->device.kobj, KOBJ_CHANGE, thermal_prop); | |
37 | for (i = 0; i < 4; ++i) | |
38 | kfree(thermal_prop[i]); | |
1cc807a2 D |
39 | mutex_unlock(&tz->lock); |
40 | return 0; | |
41 | } | |
42 | ||
e15cb144 | 43 | static struct thermal_governor thermal_gov_user_space = { |
1cc807a2 D |
44 | .name = "user_space", |
45 | .throttle = notify_user_space, | |
1cc807a2 | 46 | }; |
57c5b2ec | 47 | THERMAL_GOVERNOR_DECLARE(thermal_gov_user_space); |