diff options
| author | Will Deacon <will.deacon@arm.com> | 2012-12-12 19:20:52 +0000 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2013-01-10 21:10:20 +0000 |
| commit | 2bdd424f26be1c98b6e3d9acfffb5559c131c888 (patch) | |
| tree | efe23eb527e407f73dd3b5e6167c80acb0355b4e /arch/arm/include/asm/psci.h | |
| parent | 65397edfa1bba622a8159bed4c8efcc4ddb8ed16 (diff) | |
ARM: psci: add support for PSCI invocations from the kernel
This patch adds support for the Power State Coordination Interface
defined by ARM, allowing Linux to request CPU-centric power-management
operations from firmware implementing the PSCI protocol.
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm/include/asm/psci.h')
| -rw-r--r-- | arch/arm/include/asm/psci.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/arm/include/asm/psci.h b/arch/arm/include/asm/psci.h new file mode 100644 index 00000000000..ce0dbe7c162 --- /dev/null +++ b/arch/arm/include/asm/psci.h @@ -0,0 +1,36 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * Copyright (C) 2012 ARM Limited + */ + +#ifndef __ASM_ARM_PSCI_H +#define __ASM_ARM_PSCI_H + +#define PSCI_POWER_STATE_TYPE_STANDBY 0 +#define PSCI_POWER_STATE_TYPE_POWER_DOWN 1 + +struct psci_power_state { + u16 id; + u8 type; + u8 affinity_level; +}; + +struct psci_operations { + int (*cpu_suspend)(struct psci_power_state state, + unsigned long entry_point); + int (*cpu_off)(struct psci_power_state state); + int (*cpu_on)(unsigned long cpuid, unsigned long entry_point); + int (*migrate)(unsigned long cpuid); +}; + +extern struct psci_operations psci_ops; + +#endif /* __ASM_ARM_PSCI_H */ |