1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 *
4 * Copyright (C) 2015 ARM Limited
5 */
6
7#ifndef __LINUX_PSCI_H
8#define __LINUX_PSCI_H
9
10#include <linux/arm-smccc.h>
11#include <linux/init.h>
12#include <linux/types.h>
13
14#define PSCI_POWER_STATE_TYPE_STANDBY 0
15#define PSCI_POWER_STATE_TYPE_POWER_DOWN 1
16
17bool psci_tos_resident_on(int cpu);
18
19int psci_cpu_suspend_enter(u32 state);
20bool psci_power_state_is_valid(u32 state);
21int psci_set_osi_mode(bool enable);
22bool psci_has_osi_support(void);
23
24struct psci_operations {
25 u32 (*get_version)(void);
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
37struct psci_0_1_function_ids {
38 u32 cpu_suspend;
39 u32 cpu_on;
40 u32 cpu_off;
41 u32 migrate;
42};
43
44struct psci_0_1_function_ids get_psci_0_1_function_ids(void);
45
46#if defined(CONFIG_ARM_PSCI_FW)
47int __init psci_dt_init(void);
48#else
49static inline int psci_dt_init(void) { return 0; }
50#endif
51
52#if defined(CONFIG_ARM_PSCI_FW) && defined(CONFIG_ACPI)
53int __init psci_acpi_init(void);
54bool __init acpi_psci_present(void);
55bool acpi_psci_use_hvc(void);
56#else
57static inline int psci_acpi_init(void) { return 0; }
58static inline bool acpi_psci_present(void) { return false; }
59static inline bool acpi_psci_use_hvc(void) {return false; }
60#endif
61
62#endif /* __LINUX_PSCI_H */
63

source code of linux/include/linux/psci.h