PM / Sleep: Introduce generic callbacks for new device PM phases
Introduce generic subsystem callbacks for the new phases of device suspend/resume during system power transitions: "late suspend", "early resume", "late freeze", "early thaw", "late poweroff", "early restore". Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This commit is contained in:
Rafael J. Wysocki
Родитель
cf579dfb82
Коммит
e470d06655
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@ -91,68 +91,39 @@ int pm_generic_prepare(struct device *dev)
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return ret;
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}
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/**
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* __pm_generic_call - Generic suspend/freeze/poweroff/thaw subsystem callback.
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* @dev: Device to handle.
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* @event: PM transition of the system under way.
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* @bool: Whether or not this is the "noirq" stage.
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*
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* Execute the PM callback corresponding to @event provided by the driver of
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* @dev, if defined, and return its error code. Return 0 if the callback is
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* not present.
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*/
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static int __pm_generic_call(struct device *dev, int event, bool noirq)
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{
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const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
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int (*callback)(struct device *);
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if (!pm)
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return 0;
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switch (event) {
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case PM_EVENT_SUSPEND:
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callback = noirq ? pm->suspend_noirq : pm->suspend;
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break;
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case PM_EVENT_FREEZE:
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callback = noirq ? pm->freeze_noirq : pm->freeze;
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break;
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case PM_EVENT_HIBERNATE:
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callback = noirq ? pm->poweroff_noirq : pm->poweroff;
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break;
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case PM_EVENT_RESUME:
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callback = noirq ? pm->resume_noirq : pm->resume;
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break;
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case PM_EVENT_THAW:
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callback = noirq ? pm->thaw_noirq : pm->thaw;
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break;
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case PM_EVENT_RESTORE:
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callback = noirq ? pm->restore_noirq : pm->restore;
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break;
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default:
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callback = NULL;
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break;
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}
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return callback ? callback(dev) : 0;
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}
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/**
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* pm_generic_suspend_noirq - Generic suspend_noirq callback for subsystems.
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* @dev: Device to suspend.
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*/
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int pm_generic_suspend_noirq(struct device *dev)
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{
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return __pm_generic_call(dev, PM_EVENT_SUSPEND, true);
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const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
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return pm && pm->suspend_noirq ? pm->suspend_noirq(dev) : 0;
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}
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EXPORT_SYMBOL_GPL(pm_generic_suspend_noirq);
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/**
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* pm_generic_suspend_late - Generic suspend_late callback for subsystems.
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* @dev: Device to suspend.
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*/
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int pm_generic_suspend_late(struct device *dev)
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{
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const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
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return pm && pm->suspend_late ? pm->suspend_late(dev) : 0;
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}
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EXPORT_SYMBOL_GPL(pm_generic_suspend_late);
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/**
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* pm_generic_suspend - Generic suspend callback for subsystems.
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* @dev: Device to suspend.
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*/
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int pm_generic_suspend(struct device *dev)
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{
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return __pm_generic_call(dev, PM_EVENT_SUSPEND, false);
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const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
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return pm && pm->suspend ? pm->suspend(dev) : 0;
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}
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EXPORT_SYMBOL_GPL(pm_generic_suspend);
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@ -162,17 +133,33 @@ EXPORT_SYMBOL_GPL(pm_generic_suspend);
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*/
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int pm_generic_freeze_noirq(struct device *dev)
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{
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return __pm_generic_call(dev, PM_EVENT_FREEZE, true);
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const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
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return pm && pm->freeze_noirq ? pm->freeze_noirq(dev) : 0;
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}
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EXPORT_SYMBOL_GPL(pm_generic_freeze_noirq);
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/**
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* pm_generic_freeze_late - Generic freeze_late callback for subsystems.
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* @dev: Device to freeze.
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*/
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int pm_generic_freeze_late(struct device *dev)
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{
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const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
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return pm && pm->freeze_late ? pm->freeze_late(dev) : 0;
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}
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EXPORT_SYMBOL_GPL(pm_generic_freeze_late);
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/**
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* pm_generic_freeze - Generic freeze callback for subsystems.
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* @dev: Device to freeze.
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*/
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int pm_generic_freeze(struct device *dev)
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{
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return __pm_generic_call(dev, PM_EVENT_FREEZE, false);
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const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
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return pm && pm->freeze ? pm->freeze(dev) : 0;
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}
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EXPORT_SYMBOL_GPL(pm_generic_freeze);
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@ -182,17 +169,33 @@ EXPORT_SYMBOL_GPL(pm_generic_freeze);
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*/
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int pm_generic_poweroff_noirq(struct device *dev)
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{
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return __pm_generic_call(dev, PM_EVENT_HIBERNATE, true);
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const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
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return pm && pm->poweroff_noirq ? pm->poweroff_noirq(dev) : 0;
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}
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EXPORT_SYMBOL_GPL(pm_generic_poweroff_noirq);
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/**
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* pm_generic_poweroff_late - Generic poweroff_late callback for subsystems.
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* @dev: Device to handle.
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*/
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int pm_generic_poweroff_late(struct device *dev)
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{
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const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
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return pm && pm->poweroff_late ? pm->poweroff_late(dev) : 0;
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}
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EXPORT_SYMBOL_GPL(pm_generic_poweroff_late);
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/**
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* pm_generic_poweroff - Generic poweroff callback for subsystems.
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* @dev: Device to handle.
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*/
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int pm_generic_poweroff(struct device *dev)
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{
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return __pm_generic_call(dev, PM_EVENT_HIBERNATE, false);
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const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
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return pm && pm->poweroff ? pm->poweroff(dev) : 0;
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}
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EXPORT_SYMBOL_GPL(pm_generic_poweroff);
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@ -202,17 +205,33 @@ EXPORT_SYMBOL_GPL(pm_generic_poweroff);
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*/
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int pm_generic_thaw_noirq(struct device *dev)
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{
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return __pm_generic_call(dev, PM_EVENT_THAW, true);
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const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
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return pm && pm->thaw_noirq ? pm->thaw_noirq(dev) : 0;
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}
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EXPORT_SYMBOL_GPL(pm_generic_thaw_noirq);
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/**
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* pm_generic_thaw_early - Generic thaw_early callback for subsystems.
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* @dev: Device to thaw.
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*/
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int pm_generic_thaw_early(struct device *dev)
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{
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const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
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return pm && pm->thaw_early ? pm->thaw_early(dev) : 0;
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}
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EXPORT_SYMBOL_GPL(pm_generic_thaw_early);
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/**
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* pm_generic_thaw - Generic thaw callback for subsystems.
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* @dev: Device to thaw.
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*/
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int pm_generic_thaw(struct device *dev)
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{
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return __pm_generic_call(dev, PM_EVENT_THAW, false);
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const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
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return pm && pm->thaw ? pm->thaw(dev) : 0;
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}
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EXPORT_SYMBOL_GPL(pm_generic_thaw);
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@ -222,17 +241,33 @@ EXPORT_SYMBOL_GPL(pm_generic_thaw);
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*/
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int pm_generic_resume_noirq(struct device *dev)
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{
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return __pm_generic_call(dev, PM_EVENT_RESUME, true);
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const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
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return pm && pm->resume_noirq ? pm->resume_noirq(dev) : 0;
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}
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EXPORT_SYMBOL_GPL(pm_generic_resume_noirq);
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/**
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* pm_generic_resume_early - Generic resume_early callback for subsystems.
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* @dev: Device to resume.
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*/
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int pm_generic_resume_early(struct device *dev)
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{
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const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
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return pm && pm->resume_early ? pm->resume_early(dev) : 0;
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}
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EXPORT_SYMBOL_GPL(pm_generic_resume_early);
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/**
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* pm_generic_resume - Generic resume callback for subsystems.
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* @dev: Device to resume.
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*/
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int pm_generic_resume(struct device *dev)
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{
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return __pm_generic_call(dev, PM_EVENT_RESUME, false);
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const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
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return pm && pm->resume ? pm->resume(dev) : 0;
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}
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EXPORT_SYMBOL_GPL(pm_generic_resume);
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@ -242,17 +277,33 @@ EXPORT_SYMBOL_GPL(pm_generic_resume);
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*/
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int pm_generic_restore_noirq(struct device *dev)
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{
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return __pm_generic_call(dev, PM_EVENT_RESTORE, true);
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const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
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return pm && pm->restore_noirq ? pm->restore_noirq(dev) : 0;
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}
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EXPORT_SYMBOL_GPL(pm_generic_restore_noirq);
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/**
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* pm_generic_restore_early - Generic restore_early callback for subsystems.
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* @dev: Device to resume.
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*/
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int pm_generic_restore_early(struct device *dev)
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{
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const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
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return pm && pm->restore_early ? pm->restore_early(dev) : 0;
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}
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EXPORT_SYMBOL_GPL(pm_generic_restore_early);
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/**
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* pm_generic_restore - Generic restore callback for subsystems.
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* @dev: Device to restore.
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*/
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int pm_generic_restore(struct device *dev)
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{
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return __pm_generic_call(dev, PM_EVENT_RESTORE, false);
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const struct dev_pm_ops *pm = dev->driver ? dev->driver->pm : NULL;
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return pm && pm->restore ? pm->restore(dev) : 0;
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}
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EXPORT_SYMBOL_GPL(pm_generic_restore);
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@ -632,17 +632,23 @@ extern void __suspend_report_result(const char *function, void *fn, int ret);
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extern int device_pm_wait_for_dev(struct device *sub, struct device *dev);
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extern int pm_generic_prepare(struct device *dev);
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extern int pm_generic_suspend_late(struct device *dev);
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extern int pm_generic_suspend_noirq(struct device *dev);
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extern int pm_generic_suspend(struct device *dev);
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extern int pm_generic_resume_early(struct device *dev);
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extern int pm_generic_resume_noirq(struct device *dev);
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extern int pm_generic_resume(struct device *dev);
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extern int pm_generic_freeze_noirq(struct device *dev);
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extern int pm_generic_freeze_late(struct device *dev);
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extern int pm_generic_freeze(struct device *dev);
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extern int pm_generic_thaw_noirq(struct device *dev);
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extern int pm_generic_thaw_early(struct device *dev);
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extern int pm_generic_thaw(struct device *dev);
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extern int pm_generic_restore_noirq(struct device *dev);
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extern int pm_generic_restore_early(struct device *dev);
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extern int pm_generic_restore(struct device *dev);
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extern int pm_generic_poweroff_noirq(struct device *dev);
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extern int pm_generic_poweroff_late(struct device *dev);
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extern int pm_generic_poweroff(struct device *dev);
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extern void pm_generic_complete(struct device *dev);
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