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Commit 4ff91337 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

Merge branches 'pm-sleep', 'pm-runtime' and 'pm-apm' 

* pm-sleep:
  PM / hibernate: Call platform_leave() in suspend path too
  PM / Sleep: Add macro to define common late/early system PM callbacks
  PM / hibernate: export hibernation_set_ops

* pm-runtime:
  PM / Runtime: Implement the pm_generic_runtime functions for CONFIG_PM
  PM / Runtime: Add second macro for definition of runtime PM callbacks

* pm-apm:
  apm-emulation: add hibernation APM events to support suspend2disk
parents a759012e 362e77d1 717e5d45 6a1c64cb

drivers/base/power/generic_ops.c

+2 −2
Original line number Diff line number Diff line
@@ -10,7 +10,7 @@ 
#include <linux/pm_runtime.h>

#include <linux/export.h>



#ifdef CONFIG_PM_RUNTIME

#ifdef CONFIG_PM

/**

 * pm_generic_runtime_suspend - Generic runtime suspend callback for subsystems.

 * @dev: Device to suspend.
@@ -48,7 +48,7 @@ int pm_generic_runtime_resume(struct device *dev) 
	return ret;

}

EXPORT_SYMBOL_GPL(pm_generic_runtime_resume);

#endif /* CONFIG_PM_RUNTIME */

#endif /* CONFIG_PM */



#ifdef CONFIG_PM_SLEEP

/**

drivers/char/apm-emulation.c

+9 −2
Original line number Diff line number Diff line
@@ -531,6 +531,7 @@ static int apm_suspend_notifier(struct notifier_block *nb, 
{

	struct apm_user *as;

	int err;

	unsigned long apm_event;



	/* short-cut emergency suspends */

	if (atomic_read(&userspace_notification_inhibit))
@@ -538,6 +539,9 @@ static int apm_suspend_notifier(struct notifier_block *nb, 


	switch (event) {

	case PM_SUSPEND_PREPARE:

	case PM_HIBERNATION_PREPARE:

		apm_event = (event == PM_SUSPEND_PREPARE) ?

			APM_USER_SUSPEND : APM_USER_HIBERNATION;

		/*

		 * Queue an event to all "writer" users that we want

		 * to suspend and need their ack.
@@ -550,7 +554,7 @@ static int apm_suspend_notifier(struct notifier_block *nb, 
			    as->writer && as->suser) {

				as->suspend_state = SUSPEND_PENDING;

				atomic_inc(&suspend_acks_pending);

				queue_add_event(&as->queue, APM_USER_SUSPEND);

				queue_add_event(&as->queue, apm_event);

			}

		}
@@ -601,11 +605,14 @@ static int apm_suspend_notifier(struct notifier_block *nb, 
		return notifier_from_errno(err);



	case PM_POST_SUSPEND:

	case PM_POST_HIBERNATION:

		apm_event = (event == PM_POST_SUSPEND) ?

			APM_NORMAL_RESUME : APM_HIBERNATION_RESUME;

		/*

		 * Anyone on the APM queues will think we're still suspended.

		 * Send a message so everyone knows we're now awake again.

		 */

		queue_event(APM_NORMAL_RESUME);

		queue_event(apm_event);



		/*

		 * Finally, wake up anyone who is sleeping on the suspend.

include/linux/pm.h

+21 −0
Original line number Diff line number Diff line
@@ -311,6 +311,18 @@ struct dev_pm_ops { 
#define SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn)

#endif



#ifdef CONFIG_PM_SLEEP

#define SET_LATE_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \

	.suspend_late = suspend_fn, \

	.resume_early = resume_fn, \

	.freeze_late = suspend_fn, \

	.thaw_early = resume_fn, \

	.poweroff_late = suspend_fn, \

	.restore_early = resume_fn,

#else

#define SET_LATE_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn)

#endif



#ifdef CONFIG_PM_RUNTIME

#define SET_RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \

	.runtime_suspend = suspend_fn, \
@@ -320,6 +332,15 @@ struct dev_pm_ops { 
#define SET_RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn)

#endif



#ifdef CONFIG_PM

#define SET_PM_RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \

	.runtime_suspend = suspend_fn, \

	.runtime_resume = resume_fn, \

	.runtime_idle = idle_fn,

#else

#define SET_PM_RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn)

#endif



/*

 * Use this if you want to use the same suspend and resume callbacks for suspend

 * to RAM and hibernation.

include/linux/pm_runtime.h

+8 −4
Original line number Diff line number Diff line
@@ -23,6 +23,14 @@ 
					    usage_count */

#define RPM_AUTO		0x08	/* Use autosuspend_delay */



#ifdef CONFIG_PM

extern int pm_generic_runtime_suspend(struct device *dev);

extern int pm_generic_runtime_resume(struct device *dev);

#else

static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; }

static inline int pm_generic_runtime_resume(struct device *dev) { return 0; }

#endif



#ifdef CONFIG_PM_RUNTIME



extern struct workqueue_struct *pm_wq;
@@ -37,8 +45,6 @@ extern void pm_runtime_enable(struct device *dev); 
extern void __pm_runtime_disable(struct device *dev, bool check_resume);

extern void pm_runtime_allow(struct device *dev);

extern void pm_runtime_forbid(struct device *dev);

extern int pm_generic_runtime_suspend(struct device *dev);

extern int pm_generic_runtime_resume(struct device *dev);

extern void pm_runtime_no_callbacks(struct device *dev);

extern void pm_runtime_irq_safe(struct device *dev);

extern void __pm_runtime_use_autosuspend(struct device *dev, bool use);
@@ -142,8 +148,6 @@ static inline bool pm_runtime_active(struct device *dev) { return true; } 
static inline bool pm_runtime_status_suspended(struct device *dev) { return false; }

static inline bool pm_runtime_enabled(struct device *dev) { return false; }



static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; }

static inline int pm_generic_runtime_resume(struct device *dev) { return 0; }

static inline void pm_runtime_no_callbacks(struct device *dev) {}

static inline void pm_runtime_irq_safe(struct device *dev) {}

include/uapi/linux/apm_bios.h

+2 −0
Original line number Diff line number Diff line
@@ -67,6 +67,8 @@ struct apm_bios_info { 
#define APM_USER_SUSPEND	0x000a

#define APM_STANDBY_RESUME	0x000b

#define APM_CAPABILITY_CHANGE	0x000c

#define APM_USER_HIBERNATION	0x000d

#define APM_HIBERNATION_RESUME	0x000e



/*

 * Error codes