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c2df86ea92
The pm_request_idle() in pm_generic_complete() is pointless as it is called with the runtime PM usage counter different from zero (bumped up by the core during the prepare phase of system suspend) and the core calls pm_runtime_put() for all devices after executing their complete callbacks, so drop it. This allows the PCI PM layer to use pm_generic_complete() too. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
300 lines
7.8 KiB
C
300 lines
7.8 KiB
C
/*
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* drivers/base/power/generic_ops.c - Generic PM callbacks for subsystems
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*
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* Copyright (c) 2010 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc.
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*
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* This file is released under the GPLv2.
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*/
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#include <linux/pm.h>
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#include <linux/pm_runtime.h>
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#include <linux/export.h>
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#ifdef CONFIG_PM
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/**
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* pm_generic_runtime_suspend - Generic runtime suspend callback for subsystems.
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* @dev: Device to suspend.
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*
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* If PM operations are defined for the @dev's driver and they include
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* ->runtime_suspend(), execute it and return its error code. Otherwise,
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* return 0.
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*/
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int pm_generic_runtime_suspend(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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int ret;
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ret = pm && pm->runtime_suspend ? pm->runtime_suspend(dev) : 0;
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return ret;
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}
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EXPORT_SYMBOL_GPL(pm_generic_runtime_suspend);
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/**
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* pm_generic_runtime_resume - Generic runtime resume callback for subsystems.
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* @dev: Device to resume.
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*
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* If PM operations are defined for the @dev's driver and they include
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* ->runtime_resume(), execute it and return its error code. Otherwise,
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* return 0.
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*/
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int pm_generic_runtime_resume(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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int ret;
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ret = pm && pm->runtime_resume ? pm->runtime_resume(dev) : 0;
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return ret;
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}
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EXPORT_SYMBOL_GPL(pm_generic_runtime_resume);
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#endif /* CONFIG_PM */
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#ifdef CONFIG_PM_SLEEP
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/**
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* pm_generic_prepare - Generic routine preparing a device for power transition.
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* @dev: Device to prepare.
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*
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* Prepare a device for a system-wide power transition.
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*/
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int pm_generic_prepare(struct device *dev)
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{
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struct device_driver *drv = dev->driver;
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int ret = 0;
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if (drv && drv->pm && drv->pm->prepare)
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ret = drv->pm->prepare(dev);
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return ret;
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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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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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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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/**
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* pm_generic_freeze_noirq - Generic freeze_noirq callback for subsystems.
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* @dev: Device to freeze.
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*/
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int pm_generic_freeze_noirq(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_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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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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/**
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* pm_generic_poweroff_noirq - Generic poweroff_noirq callback for subsystems.
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* @dev: Device to handle.
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*/
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int pm_generic_poweroff_noirq(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_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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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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/**
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* pm_generic_thaw_noirq - Generic thaw_noirq callback for subsystems.
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* @dev: Device to thaw.
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*/
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int pm_generic_thaw_noirq(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_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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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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/**
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* pm_generic_resume_noirq - Generic resume_noirq callback for subsystems.
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* @dev: Device to resume.
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*/
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int pm_generic_resume_noirq(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_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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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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/**
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* pm_generic_restore_noirq - Generic restore_noirq callback for subsystems.
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* @dev: Device to restore.
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*/
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int pm_generic_restore_noirq(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_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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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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/**
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* pm_generic_complete - Generic routine completing a device power transition.
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* @dev: Device to handle.
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*
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* Complete a device power transition during a system-wide power transition.
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*/
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void pm_generic_complete(struct device *dev)
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{
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struct device_driver *drv = dev->driver;
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if (drv && drv->pm && drv->pm->complete)
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drv->pm->complete(dev);
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}
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#endif /* CONFIG_PM_SLEEP */
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