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
11struct devfreq;
12struct thermal_cooling_device;
13
14struct panfrost_device;
15
16struct 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	unsigned long current_frequency;
23	unsigned long fast_rate;
24
25	ktime_t busy_time;
26	ktime_t idle_time;
27	ktime_t time_last_update;
28	int busy_count;
29	/*
30	 * Protect busy_time, idle_time, time_last_update and busy_count
31	 * because these can be updated concurrently between multiple jobs.
32	 */
33	spinlock_t lock;
34};
35
36int panfrost_devfreq_init(struct panfrost_device *pfdev);
37void panfrost_devfreq_fini(struct panfrost_device *pfdev);
38
39void panfrost_devfreq_resume(struct panfrost_device *pfdev);
40void panfrost_devfreq_suspend(struct panfrost_device *pfdev);
41
42void panfrost_devfreq_record_busy(struct panfrost_devfreq *devfreq);
43void panfrost_devfreq_record_idle(struct panfrost_devfreq *devfreq);
44
45#endif /* __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
11struct devfreq;
12struct thermal_cooling_device;
13
14struct panfrost_device;
15
16struct 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
33int panfrost_devfreq_init(struct panfrost_device *pfdev);
34void panfrost_devfreq_fini(struct panfrost_device *pfdev);
35
36void panfrost_devfreq_resume(struct panfrost_device *pfdev);
37void panfrost_devfreq_suspend(struct panfrost_device *pfdev);
38
39void panfrost_devfreq_record_busy(struct panfrost_devfreq *devfreq);
40void panfrost_devfreq_record_idle(struct panfrost_devfreq *devfreq);
41
42#endif /* __PANFROST_DEVFREQ_H__ */