| 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/devfreq.h> |
| 8 | #include <linux/spinlock.h> |
| 9 | #include <linux/ktime.h> |
| 10 | |
| 11 | struct devfreq; |
| 12 | struct thermal_cooling_device; |
| 13 | |
| 14 | struct lima_device; |
| 15 | |
| 16 | struct lima_devfreq { |
| 17 | struct devfreq *devfreq; |
| 18 | struct thermal_cooling_device *cooling; |
| 19 | struct devfreq_simple_ondemand_data gov_data; |
| 20 | |
| 21 | ktime_t busy_time; |
| 22 | ktime_t idle_time; |
| 23 | ktime_t time_last_update; |
| 24 | int busy_count; |
| 25 | /* |
| 26 | * Protect busy_time, idle_time, time_last_update and busy_count |
| 27 | * because these can be updated concurrently, for example by the GP |
| 28 | * and PP interrupts. |
| 29 | */ |
| 30 | spinlock_t lock; |
| 31 | }; |
| 32 | |
| 33 | int lima_devfreq_init(struct lima_device *ldev); |
| 34 | void lima_devfreq_fini(struct lima_device *ldev); |
| 35 | |
| 36 | void lima_devfreq_record_busy(struct lima_devfreq *devfreq); |
| 37 | void lima_devfreq_record_idle(struct lima_devfreq *devfreq); |
| 38 | |
| 39 | int lima_devfreq_resume(struct lima_devfreq *devfreq); |
| 40 | int lima_devfreq_suspend(struct lima_devfreq *devfreq); |
| 41 | |
| 42 | #endif |
| 43 |