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 23 bool psci_tos_resident_on(int cpu); 24 25 struct 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 35 extern struct psci_operations psci_ops; 36 37 #if defined(CONFIG_ARM_PSCI_FW) 38 int __init psci_dt_init(void); 39 #else 40 static inline int psci_dt_init(void) { return 0; } 41 #endif 42 43 #if defined(CONFIG_ARM_PSCI_FW) && defined(CONFIG_ACPI) 44 int __init psci_acpi_init(void); 45 bool __init acpi_psci_present(void); 46 bool __init acpi_psci_use_hvc(void); 47 #else 48 static inline int psci_acpi_init(void) { return 0; } 49 static inline bool acpi_psci_present(void) { return false; } 50 #endif 51 52 #endif /* __LINUX_PSCI_H */ 53