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 17 bool psci_tos_resident_on(int cpu); 18 19 int psci_cpu_suspend_enter(u32 state); 20 bool psci_power_state_is_valid(u32 state); 21 int psci_set_osi_mode(bool enable); 22 bool psci_has_osi_support(void); 23 24 struct 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 35 extern struct psci_operations psci_ops; 36 37 struct psci_0_1_function_ids { 38 u32 cpu_suspend; 39 u32 cpu_on; 40 u32 cpu_off; 41 u32 migrate; 42 }; 43 44 struct psci_0_1_function_ids get_psci_0_1_function_ids(void); 45 46 #if defined(CONFIG_ARM_PSCI_FW) 47 int __init psci_dt_init(void); 48 #else psci_dt_init(void)49static inline int psci_dt_init(void) { return 0; } 50 #endif 51 52 #if defined(CONFIG_ARM_PSCI_FW) && defined(CONFIG_ACPI) 53 int __init psci_acpi_init(void); 54 bool __init acpi_psci_present(void); 55 bool acpi_psci_use_hvc(void); 56 #else psci_acpi_init(void)57static inline int psci_acpi_init(void) { return 0; } acpi_psci_present(void)58static inline bool acpi_psci_present(void) { return false; } acpi_psci_use_hvc(void)59static inline bool acpi_psci_use_hvc(void) {return false; } 60 #endif 61 62 #endif /* __LINUX_PSCI_H */ 63