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.
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.
11 * Copyright (C) 2012 ARM Limited
14 #ifndef __ASM_ARM_PSCI_H
15 #define __ASM_ARM_PSCI_H
17 #define PSCI_POWER_STATE_TYPE_STANDBY 0
18 #define PSCI_POWER_STATE_TYPE_POWER_DOWN 1
19 #define PSCI_POWER_STATE_AFFINITY_LEVEL0 0
20 #define PSCI_POWER_STATE_AFFINITY_LEVEL1 1
21 #define PSCI_POWER_STATE_AFFINITY_LEVEL2 2
22 #define PSCI_POWER_STATE_AFFINITY_LEVEL3 3
24 struct psci_power_state {
30 struct psci_operations {
31 int (*cpu_suspend)(struct psci_power_state state,
32 unsigned long entry_point);
33 int (*cpu_off)(struct psci_power_state state);
34 int (*cpu_on)(unsigned long cpuid, unsigned long entry_point);
35 int (*migrate)(unsigned long cpuid);
38 extern struct psci_operations psci_ops;
39 extern struct smp_operations psci_smp_ops;
41 #ifdef CONFIG_ARM_PSCI
43 bool psci_smp_available(void);
45 static inline void psci_init(void) { }
46 static inline bool psci_smp_available(void) { return false; }
49 #ifdef CONFIG_ARM_PSCI
50 extern int __init psci_probe(void);
52 static inline int psci_probe(void)
57 #endif /* __ASM_ARM_PSCI_H */