1 /* SPDX-License-Identifier: GPL-2.0-only */
4 * Copyright (C) 2015 ARM Limited
10 #include <linux/init.h>
11 #include <linux/types.h>
13 #define PSCI_POWER_STATE_TYPE_STANDBY 0
14 #define PSCI_POWER_STATE_TYPE_POWER_DOWN 1
16 bool psci_tos_resident_on(int cpu);
18 int psci_cpu_suspend_enter(u32 state);
19 bool psci_power_state_is_valid(u32 state);
32 struct psci_operations {
33 u32 (*get_version)(void);
34 int (*cpu_suspend)(u32 state, unsigned long entry_point);
35 int (*cpu_off)(u32 state);
36 int (*cpu_on)(unsigned long cpuid, unsigned long entry_point);
37 int (*migrate)(unsigned long cpuid);
38 int (*affinity_info)(unsigned long target_affinity,
39 unsigned long lowest_affinity_level);
40 int (*migrate_info_type)(void);
41 enum psci_conduit conduit;
42 enum smccc_version smccc_version;
45 extern struct psci_operations psci_ops;
47 #if defined(CONFIG_ARM_PSCI_FW)
48 int __init psci_dt_init(void);
50 static inline int psci_dt_init(void) { return 0; }
53 #if defined(CONFIG_ARM_PSCI_FW) && defined(CONFIG_ACPI)
54 int __init psci_acpi_init(void);
55 bool __init acpi_psci_present(void);
56 bool acpi_psci_use_hvc(void);
58 static inline int psci_acpi_init(void) { return 0; }
59 static inline bool acpi_psci_present(void) { return false; }
60 static inline bool acpi_psci_use_hvc(void) {return false; }
63 #endif /* __LINUX_PSCI_H */