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 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 33 int panfrost_devfreq_init(struct panfrost_device *pfdev); 34 void panfrost_devfreq_fini(struct panfrost_device *pfdev); 35 36 void panfrost_devfreq_resume(struct panfrost_device *pfdev); 37 void panfrost_devfreq_suspend(struct panfrost_device *pfdev); 38 39 void panfrost_devfreq_record_busy(struct panfrost_devfreq *devfreq); 40 void panfrost_devfreq_record_idle(struct panfrost_devfreq *devfreq); 41 42 #endif /* __PANFROST_DEVFREQ_H__ */ 43