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author | 2014-03-25 01:20:29 +0100 | |
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committer | 2014-04-23 01:24:14 +0100 | |
commit | 603fb42a66499ab353466c7afa3d38beea20a8a9 (patch) | |
tree | 14fd0f62deb8efe86340c528ddf5abc8289630fa /include/linux/suspend.h | |
parent | ARM: 8008/1: topology: Coding style fixes (diff) | |
download | linux-603fb42a66499ab353466c7afa3d38beea20a8a9.tar.gz linux-603fb42a66499ab353466c7afa3d38beea20a8a9.tar.bz2 linux-603fb42a66499ab353466c7afa3d38beea20a8a9.zip |
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 'include/linux/suspend.h')
-rw-r--r-- | include/linux/suspend.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/suspend.h b/include/linux/suspend.h index f73cabf59012..38bbf95109da 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -320,6 +320,8 @@ extern unsigned long get_safe_page(gfp_t gfp_mask); extern void hibernation_set_ops(const struct platform_hibernation_ops *ops); extern int hibernate(void); extern bool system_entering_hibernation(void); +asmlinkage int swsusp_save(void); +extern struct pbe *restore_pblist; #else /* CONFIG_HIBERNATION */ static inline void register_nosave_region(unsigned long b, unsigned long e) {} static inline void register_nosave_region_late(unsigned long b, unsigned long e) {} |