GNU Linux-libre 5.19-rc6-gnu
[releases.git] / drivers / gpu / drm / panfrost / panfrost_devfreq.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright 2019 Collabora ltd. */
3
4 #ifndef __PANFROST_DEVFREQ_H__
5 #define __PANFROST_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 panfrost_device;
15
16 struct panfrost_devfreq {
17         struct devfreq *devfreq;
18         struct thermal_cooling_device *cooling;
19         struct devfreq_simple_ondemand_data gov_data;
20         bool opp_of_table_added;
21
22         ktime_t busy_time;
23         ktime_t idle_time;
24         ktime_t time_last_update;
25         int busy_count;
26         /*
27          * Protect busy_time, idle_time, time_last_update and busy_count
28          * because these can be updated concurrently between multiple jobs.
29          */
30         spinlock_t lock;
31 };
32
33 int panfrost_devfreq_init(struct panfrost_device *pfdev);
34 void panfrost_devfreq_fini(struct panfrost_device *pfdev);
35
36 void panfrost_devfreq_resume(struct panfrost_device *pfdev);
37 void panfrost_devfreq_suspend(struct panfrost_device *pfdev);
38
39 void panfrost_devfreq_record_busy(struct panfrost_devfreq *devfreq);
40 void panfrost_devfreq_record_idle(struct panfrost_devfreq *devfreq);
41
42 #endif /* __PANFROST_DEVFREQ_H__ */