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298 lines
7.8 KiB
298 lines
7.8 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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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 <[email protected]>, Novell Inc. |
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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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