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The tegra_wmark governor can be used e.g. with DRM clients, such as VIC, NVDEC, NVENC, and NVJPG. This governor tightly collaborates with the actmon hardware used for monitoring the active time of the underlying DRM clients. Bug 3788919 Signed-off-by: Johnny Liu <johnliu@nvidia.com> Change-Id: Ie4d4c2b173615aa239436fbb1545118435629d38 Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2894529 Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com> GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2023, NVIDIA Corporation. All rights reserved.
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*/
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#ifndef DEVFREQ_TEGRA_WMARK_H
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#define DEVFREQ_TEGRA_WMARK_H
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#include <linux/devfreq.h>
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#include <linux/notifier.h>
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#include <linux/types.h>
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#define DEVFREQ_GOV_TEGRA_WMARK "tegra_wmark"
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enum devfreq_tegra_wmark_event {
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DEVFREQ_TEGRA_AVG_WMARK_BELOW,
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DEVFREQ_TEGRA_AVG_WMARK_ABOVE,
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DEVFREQ_TEGRA_CONSEC_WMARK_BELOW,
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DEVFREQ_TEGRA_CONSEC_WMARK_ABOVE,
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};
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/**
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* struct devfreq_tegra_wmark_config - watermark thresholds configuration
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* @avg_upper_wmark Moving average upper watermark threshold value
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* @avg_lower_wmark Moving average lower watermark threshold value
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* @consec_upper_wmark Consecutive upper watermark threshold value
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* @consec_lower_wmark Consecutive lower watermark threshold value
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* @upper_wmark_enabled Interrupt enable flag for upper watermarks
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* @lower_wmark_enabled Interrupt enable flag for lower watermarks
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*/
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struct devfreq_tegra_wmark_config {
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u32 avg_upper_wmark;
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u32 avg_lower_wmark;
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u32 consec_upper_wmark;
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u32 consec_lower_wmark;
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bool upper_wmark_enabled;
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bool lower_wmark_enabled;
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};
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/**
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* struct devfreq_tegra_wmark_drv_data - private data stored in struct devfreq
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* @event: Given different event types, the governor will
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* estimate the next device frequency with different
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* policies.
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* @update_wmark_threshold: Callback function provided by the devfreq driver
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* to update the watermark thresholds of the actmon
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* monitoring the device active time.
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*/
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struct devfreq_tegra_wmark_data {
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enum devfreq_tegra_wmark_event event;
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void (*update_wmark_threshold)(struct devfreq *this,
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struct devfreq_tegra_wmark_config *cfg);
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};
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#endif /* DEVFREQ_TEGRA_WMARK_H */
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