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authorRafael J. Wysocki <rjw@sisk.pl>2007-07-29 23:27:18 +0200
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-07-29 16:45:38 -0700
commit296699de6bdc717189a331ab6bbe90e05c94db06 (patch)
tree53c847ecc8cce11952502921844052e44ca60d5e /drivers/acpi/sleep/sleep.h
parentb0cb1a19d05b8ea8611a9ef48a17fe417f1832e6 (diff)
downloadlinux-2.6.34-ux500-296699de6bdc717189a331ab6bbe90e05c94db06.tar.gz
Introduce CONFIG_SUSPEND for suspend-to-Ram and standby
Introduce CONFIG_SUSPEND representing the ability to enter system sleep states, such as the ACPI S3 state, and allow the user to choose SUSPEND and HIBERNATION independently of each other. Make HOTPLUG_CPU be selected automatically if SUSPEND or HIBERNATION has been chosen and the kernel is intended for SMP systems. Also, introduce CONFIG_PM_SLEEP which is automatically selected if CONFIG_SUSPEND or CONFIG_HIBERNATION is set and use it to select the code needed for both suspend and hibernation. The top-level power management headers and the ACPI code related to suspend and hibernation are modified to use the new definitions (the changes in drivers/acpi/sleep/main.c are, mostly, moving code to reduce the number of ifdefs). There are many other files in which CONFIG_PM can be replaced with CONFIG_PM_SLEEP or even with CONFIG_SUSPEND, but they can be updated in the future. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/acpi/sleep/sleep.h')
-rw-r--r--drivers/acpi/sleep/sleep.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/acpi/sleep/sleep.h b/drivers/acpi/sleep/sleep.h
index f3e70397a7d..ff1f8504f49 100644
--- a/drivers/acpi/sleep/sleep.h
+++ b/drivers/acpi/sleep/sleep.h
@@ -6,3 +6,5 @@ extern void acpi_enable_wakeup_device_prep(u8 sleep_state);
extern void acpi_enable_wakeup_device(u8 sleep_state);
extern void acpi_disable_wakeup_device(u8 sleep_state);
extern void acpi_gpe_sleep_prepare(u32 sleep_state);
+
+extern int acpi_sleep_prepare(u32 acpi_state);