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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/devfreq.h>8#include <linux/spinlock.h>9#include <linux/ktime.h>10 11struct devfreq;12struct thermal_cooling_device;13 14struct lima_device;15 16struct lima_devfreq {17 struct devfreq *devfreq;18 struct thermal_cooling_device *cooling;19 struct devfreq_simple_ondemand_data gov_data;20 21 ktime_t busy_time;22 ktime_t idle_time;23 ktime_t time_last_update;24 int busy_count;25 /*26 * Protect busy_time, idle_time, time_last_update and busy_count27 * because these can be updated concurrently, for example by the GP28 * and PP interrupts.29 */30 spinlock_t lock;31};32 33int lima_devfreq_init(struct lima_device *ldev);34void lima_devfreq_fini(struct lima_device *ldev);35 36void lima_devfreq_record_busy(struct lima_devfreq *devfreq);37void lima_devfreq_record_idle(struct lima_devfreq *devfreq);38 39int lima_devfreq_resume(struct lima_devfreq *devfreq);40int lima_devfreq_suspend(struct lima_devfreq *devfreq);41 42#endif43