| 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 | 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 | |
| 36 | int panfrost_devfreq_init(struct panfrost_device *pfdev); |
| 37 | void panfrost_devfreq_fini(struct panfrost_device *pfdev); |
| 38 | |
| 39 | void panfrost_devfreq_resume(struct panfrost_device *pfdev); |
| 40 | void panfrost_devfreq_suspend(struct panfrost_device *pfdev); |
| 41 | |
| 42 | void panfrost_devfreq_record_busy(struct panfrost_devfreq *devfreq); |
| 43 | void panfrost_devfreq_record_idle(struct panfrost_devfreq *devfreq); |
| 44 | |
| 45 | #endif /* __PANFROST_DEVFREQ_H__ */ |
| 46 |