// SPDX-License-Identifier: GPL-2.0/* * drivers/base/power/generic_ops.c - Generic PM callbacks for subsystems * * Copyright (c) 2010 Rafael J. Wysocki <rjw@sisk.pl>, Novell Inc. */#include <linux/pm.h>#include <linux/pm_runtime.h>#include <linux/export.h> #define CALL_PM_OP(dev, op) \({ \	struct device *_dev = (dev); \	const struct dev_pm_ops *pm = _dev->driver ? _dev->driver->pm : NULL; \	pm && pm->op ? pm->op(_dev) : 0; \}) #ifdef CONFIG_PM/** * pm_generic_runtime_suspend - Generic runtime suspend callback for subsystems. * @dev: Device to suspend. * * If PM operations are defined for the @dev's driver and they include * ->runtime_suspend(), execute it and return its error code.  Otherwise, * return 0. */int pm_generic_runtime_suspend(struct device *dev){	return CALL_PM_OP(dev, runtime_suspend);}EXPORT_SYMBOL_GPL(pm_generic_runtime_suspend); /** * pm_generic_runtime_resume - Generic runtime resume callback for subsystems. * @dev: Device to resume. * * If PM operations are defined for the @dev's driver and they include * ->runtime_resume(), execute it and return its error code.  Otherwise, * return 0. */int pm_generic_runtime_resume(struct device *dev){	return CALL_PM_OP(dev, runtime_resume);}EXPORT_SYMBOL_GPL(pm_generic_runtime_resume);#endif /* CONFIG_PM */ #ifdef CONFIG_PM_SLEEP/** * pm_generic_prepare - Generic routine preparing a device for power transition. * @dev: Device to prepare. * * Prepare a device for a system-wide power transition. */int pm_generic_prepare(struct device *dev){	struct device_driver *drv = dev->driver;	int ret = 0; 	if (drv && drv->pm && drv->pm->prepare)		ret = drv->pm->prepare(dev); 	return ret;} /** * pm_generic_suspend_noirq - Generic suspend_noirq callback for subsystems. * @dev: Device to suspend. */int pm_generic_suspend_noirq(struct device *dev){	return CALL_PM_OP(dev, suspend_noirq);}EXPORT_SYMBOL_GPL(pm_generic_suspend_noirq); /** * pm_generic_suspend_late - Generic suspend_late callback for subsystems. * @dev: Device to suspend. */int pm_generic_suspend_late(struct device *dev){	return CALL_PM_OP(dev, suspend_late);}EXPORT_SYMBOL_GPL(pm_generic_suspend_late); /** * pm_generic_suspend - Generic suspend callback for subsystems. * @dev: Device to suspend. */int pm_generic_suspend(struct device *dev){	return CALL_PM_OP(dev, suspend);}EXPORT_SYMBOL_GPL(pm_generic_suspend); /** * pm_generic_freeze_noirq - Generic freeze_noirq callback for subsystems. * @dev: Device to freeze. */int pm_generic_freeze_noirq(struct device *dev){	return CALL_PM_OP(dev, freeze_noirq);}EXPORT_SYMBOL_GPL(pm_generic_freeze_noirq); /** * pm_generic_freeze - Generic freeze callback for subsystems. * @dev: Device to freeze. */int pm_generic_freeze(struct device *dev){	return CALL_PM_OP(dev, freeze);}EXPORT_SYMBOL_GPL(pm_generic_freeze); /** * pm_generic_poweroff_noirq - Generic poweroff_noirq callback for subsystems. * @dev: Device to handle. */int pm_generic_poweroff_noirq(struct device *dev){	return CALL_PM_OP(dev, poweroff_noirq);}EXPORT_SYMBOL_GPL(pm_generic_poweroff_noirq); /** * pm_generic_poweroff_late - Generic poweroff_late callback for subsystems. * @dev: Device to handle. */int pm_generic_poweroff_late(struct device *dev){	return CALL_PM_OP(dev, poweroff_late);}EXPORT_SYMBOL_GPL(pm_generic_poweroff_late); /** * pm_generic_poweroff - Generic poweroff callback for subsystems. * @dev: Device to handle. */int pm_generic_poweroff(struct device *dev){	return CALL_PM_OP(dev, poweroff);}EXPORT_SYMBOL_GPL(pm_generic_poweroff); /** * pm_generic_thaw_noirq - Generic thaw_noirq callback for subsystems. * @dev: Device to thaw. */int pm_generic_thaw_noirq(struct device *dev){	return CALL_PM_OP(dev, thaw_noirq);}EXPORT_SYMBOL_GPL(pm_generic_thaw_noirq); /** * pm_generic_thaw - Generic thaw callback for subsystems. * @dev: Device to thaw. */int pm_generic_thaw(struct device *dev){	return CALL_PM_OP(dev, thaw);}EXPORT_SYMBOL_GPL(pm_generic_thaw); /** * pm_generic_resume_noirq - Generic resume_noirq callback for subsystems. * @dev: Device to resume. */int pm_generic_resume_noirq(struct device *dev){	return CALL_PM_OP(dev, resume_noirq);}EXPORT_SYMBOL_GPL(pm_generic_resume_noirq); /** * pm_generic_resume_early - Generic resume_early callback for subsystems. * @dev: Device to resume. */int pm_generic_resume_early(struct device *dev){	return CALL_PM_OP(dev, resume_early);}EXPORT_SYMBOL_GPL(pm_generic_resume_early); /** * pm_generic_resume - Generic resume callback for subsystems. * @dev: Device to resume. */int pm_generic_resume(struct device *dev){	return CALL_PM_OP(dev, resume);}EXPORT_SYMBOL_GPL(pm_generic_resume); /** * pm_generic_restore_noirq - Generic restore_noirq callback for subsystems. * @dev: Device to restore. */int pm_generic_restore_noirq(struct device *dev){	return CALL_PM_OP(dev, restore_noirq);}EXPORT_SYMBOL_GPL(pm_generic_restore_noirq); /** * pm_generic_restore_early - Generic restore_early callback for subsystems. * @dev: Device to resume. */int pm_generic_restore_early(struct device *dev){	return CALL_PM_OP(dev, restore_early);}EXPORT_SYMBOL_GPL(pm_generic_restore_early); /** * pm_generic_restore - Generic restore callback for subsystems. * @dev: Device to restore. */int pm_generic_restore(struct device *dev){	return CALL_PM_OP(dev, restore);}EXPORT_SYMBOL_GPL(pm_generic_restore); /** * pm_generic_complete - Generic routine completing a device power transition. * @dev: Device to handle. * * Complete a device power transition during a system-wide power transition. */void pm_generic_complete(struct device *dev){	struct device_driver *drv = dev->driver; 	if (drv && drv->pm && drv->pm->complete)		drv->pm->complete(dev);}#endif /* CONFIG_PM_SLEEP */