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) 2015 ARM Limited
14 #ifndef __LINUX_PSCI_H
15 #define __LINUX_PSCI_H
17 #include <linux/init.h>
18 #include <linux/types.h>
20 #define PSCI_POWER_STATE_TYPE_STANDBY 0
21 #define PSCI_POWER_STATE_TYPE_POWER_DOWN 1
23 bool psci_tos_resident_on(int cpu
);
25 int psci_cpu_init_idle(unsigned int cpu
);
26 int psci_cpu_suspend_enter(unsigned long index
);
28 struct psci_operations
{
29 int (*cpu_suspend
)(u32 state
, unsigned long entry_point
);
30 int (*cpu_off
)(u32 state
);
31 int (*cpu_on
)(unsigned long cpuid
, unsigned long entry_point
);
32 int (*migrate
)(unsigned long cpuid
);
33 int (*affinity_info
)(unsigned long target_affinity
,
34 unsigned long lowest_affinity_level
);
35 int (*migrate_info_type
)(void);
38 extern struct psci_operations psci_ops
;
40 #if defined(CONFIG_ARM_PSCI_FW)
41 int __init
psci_dt_init(void);
43 static inline int psci_dt_init(void) { return 0; }
46 #if defined(CONFIG_ARM_PSCI_FW) && defined(CONFIG_ACPI)
47 int __init
psci_acpi_init(void);
48 bool __init
acpi_psci_present(void);
49 bool __init
acpi_psci_use_hvc(void);
51 static inline int psci_acpi_init(void) { return 0; }
52 static inline bool acpi_psci_present(void) { return false; }
55 #endif /* __LINUX_PSCI_H */