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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
This commit is contained in:
Rafael J. Wysocki 2014-01-12 23:50:03 +01:00
parent a759012e5f 362e77d1cb 717e5d458e 6a1c64cb40
commit 4ff913373a
6 changed files with 46 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/base/power/generic_ops.c
View File

@ -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
/**

11
drivers/char/apm-emulation.c
View File

@ -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.

21
include/linux/pm.h
View File

@ -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.

12
include/linux/pm_runtime.h
View File

@ -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) {}

2
include/uapi/linux/apm_bios.h
View File

@ -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

5
kernel/power/hibernate.c
View File

@ -82,6 +82,7 @@ void hibernation_set_ops(const struct platform_hibernation_ops *ops)
unlock_system_sleep();
}
EXPORT_SYMBOL_GPL(hibernation_set_ops);
static bool entering_platform_hibernation;
@ -293,10 +294,10 @@ static int create_image(int platform_mode)
error);
/* Restore control flow magically appears here */
restore_processor_state();
if (!in_suspend) {
if (!in_suspend)
events_check_enabled = false;
platform_leave(platform_mode);
}
Power_up:
syscore_resume();