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/spinlock.h> 8 #include <linux/ktime.h> 9 10 struct devfreq; 11 struct opp_table; 12 struct thermal_cooling_device; 13 14 struct lima_device; 15 16 struct lima_devfreq { 17 struct devfreq *devfreq; 18 struct opp_table *clkname_opp_table; 19 struct opp_table *regulators_opp_table; 20 struct thermal_cooling_device *cooling; 21 bool opp_of_table_added; 22 23 ktime_t busy_time; 24 ktime_t idle_time; 25 ktime_t time_last_update; 26 int busy_count; 27 /* 28 * Protect busy_time, idle_time, time_last_update and busy_count 29 * because these can be updated concurrently, for example by the GP 30 * and PP interrupts. 31 */ 32 spinlock_t lock; 33 }; 34 35 int lima_devfreq_init(struct lima_device *ldev); 36 void lima_devfreq_fini(struct lima_device *ldev); 37 38 void lima_devfreq_record_busy(struct lima_devfreq *devfreq); 39 void lima_devfreq_record_idle(struct lima_devfreq *devfreq); 40 41 int lima_devfreq_resume(struct lima_devfreq *devfreq); 42 int lima_devfreq_suspend(struct lima_devfreq *devfreq); 43 44 #endif 45