arch/arm64/include/asm/psci.h

   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) 2013 ARM Limited
  12  */
  13
  14 #ifndef __ASM_PSCI_H
  15 #define __ASM_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
  27 struct psci_operations {
  28         int (*cpu_suspend)(struct psci_power_state state,
  29                            unsigned long entry_point);
  30         int (*cpu_off)(struct psci_power_state 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);
  36 };
  37
  38 extern struct psci_operations psci_ops;
  39
  40 int psci_init(void);
  41
  42 #endif /* __ASM_PSCI_H */