1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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2 | /* Copyright 2020 Martin Blumenstingl <martin.blumenstingl@googlemail.com> */ |
3 | |
4 | #ifndef __LIMA_DEVFREQ_H__ |
5 | #define __LIMA_DEVFREQ_H__ |
6 | |
7 | #include <linux/devfreq.h> |
8 | #include <linux/spinlock.h> |
9 | #include <linux/ktime.h> |
10 | |
11 | struct devfreq; |
12 | struct thermal_cooling_device; |
13 | |
14 | struct lima_device; |
15 | |
16 | struct lima_devfreq { |
17 | struct devfreq *devfreq; |
18 | struct thermal_cooling_device *cooling; |
19 | struct devfreq_simple_ondemand_data gov_data; |
20 | |
21 | ktime_t busy_time; |
22 | ktime_t idle_time; |
23 | ktime_t time_last_update; |
24 | int busy_count; |
25 | /* |
26 | * Protect busy_time, idle_time, time_last_update and busy_count |
27 | * because these can be updated concurrently, for example by the GP |
28 | * and PP interrupts. |
29 | */ |
30 | spinlock_t lock; |
31 | }; |
32 | |
33 | int lima_devfreq_init(struct lima_device *ldev); |
34 | void lima_devfreq_fini(struct lima_device *ldev); |
35 | |
36 | void lima_devfreq_record_busy(struct lima_devfreq *devfreq); |
37 | void lima_devfreq_record_idle(struct lima_devfreq *devfreq); |
38 | |
39 | int lima_devfreq_resume(struct lima_devfreq *devfreq); |
40 | int lima_devfreq_suspend(struct lima_devfreq *devfreq); |
41 | |
42 | #endif |
43 |