296699de6b
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>
78 lines
1.2 KiB
C
78 lines
1.2 KiB
C
/*
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* shutdown.c
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*/
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extern void device_shutdown(void);
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#ifdef CONFIG_PM_SLEEP
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/*
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* main.c
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*/
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/*
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* Used to synchronize global power management operations.
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*/
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extern struct mutex dpm_mtx;
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/*
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* Used to serialize changes to the dpm_* lists.
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*/
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extern struct mutex dpm_list_mtx;
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/*
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* The PM lists.
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*/
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extern struct list_head dpm_active;
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extern struct list_head dpm_off;
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extern struct list_head dpm_off_irq;
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static inline struct dev_pm_info * to_pm_info(struct list_head * entry)
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{
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return container_of(entry, struct dev_pm_info, entry);
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}
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static inline struct device * to_device(struct list_head * entry)
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{
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return container_of(to_pm_info(entry), struct device, power);
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}
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extern int device_pm_add(struct device *);
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extern void device_pm_remove(struct device *);
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/*
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* sysfs.c
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*/
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extern int dpm_sysfs_add(struct device *);
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extern void dpm_sysfs_remove(struct device *);
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/*
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* resume.c
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*/
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extern void dpm_resume(void);
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extern void dpm_power_up(void);
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extern int resume_device(struct device *);
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/*
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* suspend.c
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*/
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extern int suspend_device(struct device *, pm_message_t);
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#else /* CONFIG_PM_SLEEP */
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static inline int device_pm_add(struct device * dev)
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{
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return 0;
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}
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static inline void device_pm_remove(struct device * dev)
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{
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}
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#endif
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