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) 2012 ARM Limited 12 */ 13 14 #ifndef __ASM_ARM_PSCI_H 15 #define __ASM_ARM_PSCI_H 16 17 #define PSCI_POWER_STATE_TYPE_STANDBY 0 18 #define PSCI_POWER_STATE_TYPE_POWER_DOWN 1 19 20 struct psci_power_state { 21 u16 id; 22 u8 type; 23 u8 affinity_level; 24 }; 25 26 struct psci_operations { 27 int (*cpu_suspend)(struct psci_power_state state, 28 unsigned long entry_point); 29 int (*cpu_off)(struct psci_power_state state); 30 int (*cpu_on)(unsigned long cpuid, unsigned long entry_point); 31 int (*migrate)(unsigned long cpuid); 32 int (*affinity_info)(unsigned long target_affinity, 33 unsigned long lowest_affinity_level); 34 int (*migrate_info_type)(void); 35 }; 36 37 extern struct psci_operations psci_ops; 38 extern struct smp_operations psci_smp_ops; 39 40 #ifdef CONFIG_ARM_PSCI 41 int psci_init(void); 42 bool psci_smp_available(void); 43 #else 44 static inline int psci_init(void) { } 45 static inline bool psci_smp_available(void) { return false; } 46 #endif 47 48 #endif /* __ASM_ARM_PSCI_H */ 49