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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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4836cf044d
Used for device resume/suspend in the following commits. Tested-by: Bhushan Shah <bshah@kde.org> Reviewed-by: Vasily Khoruzhick <anarsoul@gmail.com> Signed-off-by: Qiang Yu <yuq825@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200421133551.31481-6-yuq825@gmail.com
45 lines
1.1 KiB
C
45 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright 2020 Martin Blumenstingl <martin.blumenstingl@googlemail.com> */
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#ifndef __LIMA_DEVFREQ_H__
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#define __LIMA_DEVFREQ_H__
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#include <linux/spinlock.h>
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#include <linux/ktime.h>
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struct devfreq;
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struct opp_table;
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struct thermal_cooling_device;
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struct lima_device;
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struct lima_devfreq {
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struct devfreq *devfreq;
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struct opp_table *clkname_opp_table;
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struct opp_table *regulators_opp_table;
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struct thermal_cooling_device *cooling;
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bool opp_of_table_added;
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ktime_t busy_time;
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ktime_t idle_time;
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ktime_t time_last_update;
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int busy_count;
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/*
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* Protect busy_time, idle_time, time_last_update and busy_count
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* because these can be updated concurrently, for example by the GP
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* and PP interrupts.
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*/
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spinlock_t lock;
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};
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int lima_devfreq_init(struct lima_device *ldev);
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void lima_devfreq_fini(struct lima_device *ldev);
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void lima_devfreq_record_busy(struct lima_devfreq *devfreq);
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void lima_devfreq_record_idle(struct lima_devfreq *devfreq);
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int lima_devfreq_resume(struct lima_devfreq *devfreq);
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int lima_devfreq_suspend(struct lima_devfreq *devfreq);
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#endif
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