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 10struct devfreq; 11struct opp_table; 12struct thermal_cooling_device; 13 14struct lima_device; 15 16struct 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 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, for example by the GP 29 * and PP interrupts. 30 */ 31 spinlock_t lock; 32}; 33 34int lima_devfreq_init(struct lima_device *ldev); 35void lima_devfreq_fini(struct lima_device *ldev); 36 37void lima_devfreq_record_busy(struct lima_devfreq *devfreq); 38void lima_devfreq_record_idle(struct lima_devfreq *devfreq); 39 40int lima_devfreq_resume(struct lima_devfreq *devfreq); 41int lima_devfreq_suspend(struct lima_devfreq *devfreq); 42 43#endif 44