]> Git Repo - linux.git/blob - drivers/gpu/drm/lima/lima_devfreq.h
Merge tag 'gvt-next-fixes-2021-04-21' of https://github.com/intel/gvt-linux into...
[linux.git] / drivers / gpu / drm / lima / lima_devfreq.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* Copyright 2020 Martin Blumenstingl <[email protected]> */
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 opp_table;
13 struct thermal_cooling_device;
14
15 struct lima_device;
16
17 struct lima_devfreq {
18         struct devfreq *devfreq;
19         struct opp_table *clkname_opp_table;
20         struct opp_table *regulators_opp_table;
21         struct thermal_cooling_device *cooling;
22         struct devfreq_simple_ondemand_data gov_data;
23
24         ktime_t busy_time;
25         ktime_t idle_time;
26         ktime_t time_last_update;
27         int busy_count;
28         /*
29          * Protect busy_time, idle_time, time_last_update and busy_count
30          * because these can be updated concurrently, for example by the GP
31          * and PP interrupts.
32          */
33         spinlock_t lock;
34 };
35
36 int lima_devfreq_init(struct lima_device *ldev);
37 void lima_devfreq_fini(struct lima_device *ldev);
38
39 void lima_devfreq_record_busy(struct lima_devfreq *devfreq);
40 void lima_devfreq_record_idle(struct lima_devfreq *devfreq);
41
42 int lima_devfreq_resume(struct lima_devfreq *devfreq);
43 int lima_devfreq_suspend(struct lima_devfreq *devfreq);
44
45 #endif
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