1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* Copyright 2020 Martin Blumenstingl <martin.blumenstingl@googlemail.com> */ 3*4882a593Smuzhiyun 4*4882a593Smuzhiyun #ifndef __LIMA_DEVFREQ_H__ 5*4882a593Smuzhiyun #define __LIMA_DEVFREQ_H__ 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #include <linux/spinlock.h> 8*4882a593Smuzhiyun #include <linux/ktime.h> 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun struct devfreq; 11*4882a593Smuzhiyun struct opp_table; 12*4882a593Smuzhiyun struct thermal_cooling_device; 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun struct lima_device; 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun struct lima_devfreq { 17*4882a593Smuzhiyun struct devfreq *devfreq; 18*4882a593Smuzhiyun struct opp_table *clkname_opp_table; 19*4882a593Smuzhiyun struct opp_table *regulators_opp_table; 20*4882a593Smuzhiyun struct thermal_cooling_device *cooling; 21*4882a593Smuzhiyun bool opp_of_table_added; 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun ktime_t busy_time; 24*4882a593Smuzhiyun ktime_t idle_time; 25*4882a593Smuzhiyun ktime_t time_last_update; 26*4882a593Smuzhiyun int busy_count; 27*4882a593Smuzhiyun /* 28*4882a593Smuzhiyun * Protect busy_time, idle_time, time_last_update and busy_count 29*4882a593Smuzhiyun * because these can be updated concurrently, for example by the GP 30*4882a593Smuzhiyun * and PP interrupts. 31*4882a593Smuzhiyun */ 32*4882a593Smuzhiyun spinlock_t lock; 33*4882a593Smuzhiyun }; 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun int lima_devfreq_init(struct lima_device *ldev); 36*4882a593Smuzhiyun void lima_devfreq_fini(struct lima_device *ldev); 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun void lima_devfreq_record_busy(struct lima_devfreq *devfreq); 39*4882a593Smuzhiyun void lima_devfreq_record_idle(struct lima_devfreq *devfreq); 40*4882a593Smuzhiyun 41*4882a593Smuzhiyun int lima_devfreq_resume(struct lima_devfreq *devfreq); 42*4882a593Smuzhiyun int lima_devfreq_suspend(struct lima_devfreq *devfreq); 43*4882a593Smuzhiyun 44*4882a593Smuzhiyun #endif 45