Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License version 2 as
4 * published by the Free Software Foundation.
5 *
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
10 *
11 * Copyright (C) 2015 ARM Limited
12 */
13
14#ifndef __LINUX_PSCI_H
15#define __LINUX_PSCI_H
16
17#include <linux/init.h>
18#include <linux/types.h>
19
20#define PSCI_POWER_STATE_TYPE_STANDBY 0
21#define PSCI_POWER_STATE_TYPE_POWER_DOWN 1
22
23bool psci_tos_resident_on(int cpu);
24
25struct psci_operations {
26 int (*cpu_suspend)(u32 state, unsigned long entry_point);
27 int (*cpu_off)(u32 state);
28 int (*cpu_on)(unsigned long cpuid, unsigned long entry_point);
29 int (*migrate)(unsigned long cpuid);
30 int (*affinity_info)(unsigned long target_affinity,
31 unsigned long lowest_affinity_level);
32 int (*migrate_info_type)(void);
33};
34
35extern struct psci_operations psci_ops;
36
37#if defined(CONFIG_ARM_PSCI_FW)
38int __init psci_dt_init(void);
39#else
40static inline int psci_dt_init(void) { return 0; }
41#endif
42
43#if defined(CONFIG_ARM_PSCI_FW) && defined(CONFIG_ACPI)
44int __init psci_acpi_init(void);
45bool __init acpi_psci_present(void);
46bool __init acpi_psci_use_hvc(void);
47#else
48static inline int psci_acpi_init(void) { return 0; }
49static inline bool acpi_psci_present(void) { return false; }
50#endif
51
52#endif /* __LINUX_PSCI_H */