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| author | Sebastian Capella <sebastian.capella@linaro.org> | 2014-03-25 00:20:29 (GMT) |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-04-23 00:24:14 (GMT) |
| commit | 603fb42a66499ab353466c7afa3d38beea20a8a9 (patch) | |
| tree | 14fd0f62deb8efe86340c528ddf5abc8289630fa /arch/arm/Kconfig | |
| parent | 44ae903b96b1e5f9ff3103cd86918619c188003f (diff) | |
| download | linux-603fb42a66499ab353466c7afa3d38beea20a8a9.tar.xz | |
ARM: 8011/1: ARM hibernation / suspend-to-disk
Enable hibernation for ARM architectures and provide ARM
architecture specific calls used during hibernation.
The swsusp hibernation framework depends on the
platform first having functional suspend/resume.
Then, in order to enable hibernation on a given platform, a
platform_hibernation_ops structure may need to be registered with
the system in order to save/restore any SoC-specific / cpu specific
state needing (re)init over a suspend-to-disk/resume-from-disk cycle.
For example:
- "secure" SoCs that have different sets of control registers
and/or different CR reg access patterns.
- SoCs with L2 caches as the activation sequence there is
SoC-dependent; a full off-on cycle for L2 is not done
by the hibernation support code.
- SoCs requiring steps on wakeup _before_ the "generic" parts
done by cpu_suspend / cpu_resume can work correctly.
- SoCs having persistent state which is maintained during suspend
and resume, but will be lost during the power off cycle after
suspend-to-disk.
This is a rebase/rework of Frank Hofmann's v5 hibernation patchset.
Acked-by: Russ Dill <Russ.Dill@ti.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Signed-off-by: Sebastian Capella <sebastian.capella@linaro.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
[fixed duplicate virt_to_pfn() definition --rmk]
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/Kconfig')
| -rw-r--r-- | arch/arm/Kconfig | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index ab438cb..5850617 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -2294,6 +2294,11 @@ config ARCH_SUSPEND_POSSIBLE config ARM_CPU_SUSPEND def_bool PM_SLEEP +config ARCH_HIBERNATION_POSSIBLE + bool + depends on MMU + default y if ARCH_SUSPEND_POSSIBLE + endmenu source "net/Kconfig" |