tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2/* Copyright 2020 Martin Blumenstingl <martin.blumenstingl@googlemail.com> */
3
4#ifndef __LIMA_DEVFREQ_H__
5#define __LIMA_DEVFREQ_H__
6
7#include <linux/spinlock.h>
8#include <linux/ktime.h>
9
10struct devfreq;
11struct opp_table;
12struct thermal_cooling_device;
13
14struct lima_device;
15
16struct lima_devfreq {
17 struct devfreq *devfreq;
18 struct opp_table *clkname_opp_table;
19 struct opp_table *regulators_opp_table;
20 struct thermal_cooling_device *cooling;
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, for example by the GP
29 * and PP interrupts.
30 */
31 spinlock_t lock;
32};
33
34int lima_devfreq_init(struct lima_device *ldev);
35void lima_devfreq_fini(struct lima_device *ldev);
36
37void lima_devfreq_record_busy(struct lima_devfreq *devfreq);
38void lima_devfreq_record_idle(struct lima_devfreq *devfreq);
39
40int lima_devfreq_resume(struct lima_devfreq *devfreq);
41int lima_devfreq_suspend(struct lima_devfreq *devfreq);
42
43#endif