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| author | Graeme Gregory <graeme.gregory@linaro.org> | 2015-03-24 14:02:39 +0000 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2015-03-25 11:49:31 +0000 |
| commit | 6e0a0ea12962a2175a9f47621f9fe7a4c866cb12 (patch) | |
| tree | 190b59bb06354d4f438af6614ba4165131af8daf /arch | |
| parent | 652261a7a86c884147930fa1e5ddd82a8a5748da (diff) | |
| download | op-kernel-dev-6e0a0ea12962a2175a9f47621f9fe7a4c866cb12.zip op-kernel-dev-6e0a0ea12962a2175a9f47621f9fe7a4c866cb12.tar.gz | |
ACPI / sleep: Introduce CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT
ACPI 5.1 does not currently support S states for ARM64 hardware but
ACPI code will call acpi_target_system_state() and acpi_sleep_init()
for device power management, so introduce
CONFIG_ACPI_SYSTEM_POWER_STATES_SUPPORT and select it for x86 and
ia64 only to make sleep functions available, and also introduce stub
function to allow other drivers to function until S states are defined
for ARM64.
It will be no functional change for x86 and IA64.
Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Graeme Gregory <graeme.gregory@linaro.org>
Signed-off-by: Tomasz Nowicki <tomasz.nowicki@linaro.org>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/ia64/Kconfig | 1 | ||||
| -rw-r--r-- | arch/x86/Kconfig | 1 |
2 files changed, 2 insertions, 0 deletions
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 074e52b..cc3414f 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -10,6 +10,7 @@ config IA64 select ARCH_MIGHT_HAVE_PC_SERIO select PCI if (!IA64_HP_SIM) select ACPI if (!IA64_HP_SIM) + select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI select HAVE_UNSTABLE_SCHED_CLOCK select HAVE_IDE diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index b7d31ca..c3ea9f9 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -22,6 +22,7 @@ config X86_64 ### Arch settings config X86 def_bool y + select ACPI_SYSTEM_POWER_STATES_SUPPORT if ACPI select ARCH_MIGHT_HAVE_ACPI_PDC if ACPI select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS select ARCH_HAS_FAST_MULTIPLIER |
