e790f1deb2
This patch adds support for the Power State Coordination Interface defined by ARM, allowing Linux to request CPU-centric power-management operations from firmware implementing the PSCI protocol. Signed-off-by: Will Deacon <will.deacon@arm.com> [Marc: s/u32/u64/ in the relevant spots, and switch from an initcall to an simpler init function] Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
38 lines
1 KiB
C
38 lines
1 KiB
C
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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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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* Copyright (C) 2013 ARM Limited
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*/
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#ifndef __ASM_PSCI_H
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#define __ASM_PSCI_H
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#define PSCI_POWER_STATE_TYPE_STANDBY 0
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#define PSCI_POWER_STATE_TYPE_POWER_DOWN 1
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struct psci_power_state {
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u16 id;
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u8 type;
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u8 affinity_level;
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};
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struct psci_operations {
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int (*cpu_suspend)(struct psci_power_state state,
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unsigned long entry_point);
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int (*cpu_off)(struct psci_power_state state);
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int (*cpu_on)(unsigned long cpuid, unsigned long entry_point);
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int (*migrate)(unsigned long cpuid);
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};
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extern struct psci_operations psci_ops;
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int psci_init(void);
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#endif /* __ASM_PSCI_H */
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