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/spinlock.h> 8 #include <linux/ktime.h> 9 10 struct devfreq; 11 struct thermal_cooling_device; 12 13 struct panfrost_device; 14 15 struct panfrost_devfreq { 16 struct devfreq *devfreq; 17 struct thermal_cooling_device *cooling; 18 bool opp_of_table_added; 19 20 ktime_t busy_time; 21 ktime_t idle_time; 22 ktime_t time_last_update; 23 int busy_count; 24 /* 25 * Protect busy_time, idle_time, time_last_update and busy_count 26 * because these can be updated concurrently between multiple jobs. 27 */ 28 spinlock_t lock; 29 }; 30 31 int panfrost_devfreq_init(struct panfrost_device *pfdev); 32 void panfrost_devfreq_fini(struct panfrost_device *pfdev); 33 34 void panfrost_devfreq_resume(struct panfrost_device *pfdev); 35 void panfrost_devfreq_suspend(struct panfrost_device *pfdev); 36 37 void panfrost_devfreq_record_busy(struct panfrost_devfreq *devfreq); 38 void panfrost_devfreq_record_idle(struct panfrost_devfreq *devfreq); 39 40 #endif /* __PANFROST_DEVFREQ_H__ */ 41