/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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*
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* (C) COPYRIGHT 2011-2015, 2018, 2020-2021 ARM Limited. All rights reserved.
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*
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* This program is free software and is provided to you under the terms of the
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* GNU General Public License version 2 as published by the Free Software
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* Foundation, and any use by you of this program is subject to the terms
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* of such GNU license.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you can access it online at
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* http://www.gnu.org/licenses/gpl-2.0.html.
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*
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*/
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/*
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* "Always on" power management policy
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*/
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#ifndef MALI_KBASE_PM_ALWAYS_ON_H
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#define MALI_KBASE_PM_ALWAYS_ON_H
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/**
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* DOC:
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* The "Always on" power management policy has the following
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* characteristics:
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*
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* - When KBase indicates that the GPU will be powered up, but we don't yet
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* know which Job Chains are to be run:
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* Shader Cores are powered up, regardless of whether or not they will be
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* needed later.
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*
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* - When KBase indicates that Shader Cores are needed to submit the currently
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* queued Job Chains:
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* Shader Cores are kept powered, regardless of whether or not they will be
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* needed
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*
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* - When KBase indicates that the GPU need not be powered:
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* The Shader Cores are kept powered, regardless of whether or not they will
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* be needed. The GPU itself is also kept powered, even though it is not
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* needed.
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*
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* This policy is automatically overridden during system suspend: the desired
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* core state is ignored, and the cores are forced off regardless of what the
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* policy requests. After resuming from suspend, new changes to the desired
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* core state made by the policy are honored.
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*
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* Note:
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*
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* - KBase indicates the GPU will be powered up when it has a User Process that
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* has just started to submit Job Chains.
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*
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* - KBase indicates the GPU need not be powered when all the Job Chains from
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* User Processes have finished, and it is waiting for a User Process to
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* submit some more Job Chains.
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*/
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/**
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* struct kbasep_pm_policy_always_on - Private struct for policy instance data
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* @dummy: unused dummy variable
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*
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* This contains data that is private to the particular power policy that is
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* active.
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*/
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struct kbasep_pm_policy_always_on {
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int dummy;
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};
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extern const struct kbase_pm_policy kbase_pm_always_on_policy_ops;
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#endif /* MALI_KBASE_PM_ALWAYS_ON_H */
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