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
);
24 bool psci_power_state_loses_context(u32 state
);
25 bool psci_power_state_is_valid(u32 state
);
27 struct psci_operations
{
28 int (*cpu_suspend
)(u32 state
, unsigned long entry_point
);
29 int (*cpu_off
)(u32 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);
37 extern struct psci_operations psci_ops
;
39 #if defined(CONFIG_ARM_PSCI_FW)
40 int __init
psci_dt_init(void);
42 static inline int psci_dt_init(void) { return 0; }
45 #if defined(CONFIG_ARM_PSCI_FW) && defined(CONFIG_ACPI)
46 int __init
psci_acpi_init(void);
47 bool __init
acpi_psci_present(void);
48 bool __init
acpi_psci_use_hvc(void);
50 static inline int psci_acpi_init(void) { return 0; }
51 static inline bool acpi_psci_present(void) { return false; }
54 #endif /* __LINUX_PSCI_H */
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