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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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3b4d4c98e5
Merge runtime PM updates and power capping updates for 6.17-rc1: - Document return values of suspend-related API functions in the runtime PM framework (Sakari Ailus) - Mark last busy stamp in multiple autosuspend-related functions in the runtime PM framework and update its documentation (Sakari Ailus) - Take active children into account in pm_runtime_get_if_in_use() for consistency (Rafael Wysocki) - Fix NULL pointer dereference in get_pd_power_uw() in the dtpm_cpu power capping driver (Sivan Zohar-Kotzer) - Add support for the Bartlett Lake platform to the Intel RAPL power capping driver (Qiao Wei) - Add PL4 support for Panther Lake to the intel_rapl_msr power capping driver (Zhang Rui) * pm-runtime: PM: runtime: Take active children into account in pm_runtime_get_if_in_use() Documentation: PM: *_autosuspend() functions update last busy time PM: runtime: Mark last busy stamp in pm_request_autosuspend() PM: runtime: Mark last busy stamp in pm_runtime_autosuspend() PM: runtime: Mark last busy stamp in pm_runtime_put_sync_autosuspend() PM: runtime: Mark last busy stamp in pm_runtime_put_autosuspend() PM: runtime: Document return values of suspend-related API functions * pm-powercap: powercap: dtpm_cpu: Fix NULL pointer dereference in get_pd_power_uw() powercap: intel_rapl: Add support for Bartlett Lake platform powercap: intel_rapl_msr: Add PL4 support for Panther Lake
779 lines
26 KiB
C
779 lines
26 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* pm_runtime.h - Device run-time power management helper functions.
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*
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* Copyright (C) 2009 Rafael J. Wysocki <rjw@sisk.pl>
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*/
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#ifndef _LINUX_PM_RUNTIME_H
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#define _LINUX_PM_RUNTIME_H
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#include <linux/device.h>
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#include <linux/notifier.h>
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#include <linux/pm.h>
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#include <linux/jiffies.h>
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/* Runtime PM flag argument bits */
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#define RPM_ASYNC 0x01 /* Request is asynchronous */
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#define RPM_NOWAIT 0x02 /* Don't wait for concurrent
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state change */
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#define RPM_GET_PUT 0x04 /* Increment/decrement the
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usage_count */
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#define RPM_AUTO 0x08 /* Use autosuspend_delay */
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/*
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* Use this for defining a set of PM operations to be used in all situations
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* (system suspend, hibernation or runtime PM).
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*
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* Note that the behaviour differs from the deprecated UNIVERSAL_DEV_PM_OPS()
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* macro, which uses the provided callbacks for both runtime PM and system
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* sleep, while DEFINE_RUNTIME_DEV_PM_OPS() uses pm_runtime_force_suspend()
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* and pm_runtime_force_resume() for its system sleep callbacks.
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*
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* If the underlying dev_pm_ops struct symbol has to be exported, use
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* EXPORT_RUNTIME_DEV_PM_OPS() or EXPORT_GPL_RUNTIME_DEV_PM_OPS() instead.
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*/
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#define DEFINE_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \
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_DEFINE_DEV_PM_OPS(name, pm_runtime_force_suspend, \
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pm_runtime_force_resume, suspend_fn, \
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resume_fn, idle_fn)
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#define EXPORT_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \
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EXPORT_DEV_PM_OPS(name) = { \
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RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \
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}
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#define EXPORT_GPL_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn) \
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EXPORT_GPL_DEV_PM_OPS(name) = { \
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RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \
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}
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#define EXPORT_NS_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn, ns) \
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EXPORT_NS_DEV_PM_OPS(name, ns) = { \
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RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \
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}
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#define EXPORT_NS_GPL_RUNTIME_DEV_PM_OPS(name, suspend_fn, resume_fn, idle_fn, ns) \
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EXPORT_NS_GPL_DEV_PM_OPS(name, ns) = { \
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RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \
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}
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#ifdef CONFIG_PM
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extern struct workqueue_struct *pm_wq;
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static inline bool queue_pm_work(struct work_struct *work)
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{
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return queue_work(pm_wq, work);
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}
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extern int pm_generic_runtime_suspend(struct device *dev);
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extern int pm_generic_runtime_resume(struct device *dev);
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extern int pm_runtime_force_suspend(struct device *dev);
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extern int __pm_runtime_idle(struct device *dev, int rpmflags);
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extern int __pm_runtime_suspend(struct device *dev, int rpmflags);
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extern int __pm_runtime_resume(struct device *dev, int rpmflags);
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extern int pm_runtime_get_if_active(struct device *dev);
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extern int pm_runtime_get_if_in_use(struct device *dev);
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extern int pm_schedule_suspend(struct device *dev, unsigned int delay);
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extern int __pm_runtime_set_status(struct device *dev, unsigned int status);
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extern int pm_runtime_barrier(struct device *dev);
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extern bool pm_runtime_block_if_disabled(struct device *dev);
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extern void pm_runtime_unblock(struct device *dev);
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extern void pm_runtime_enable(struct device *dev);
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extern void __pm_runtime_disable(struct device *dev, bool check_resume);
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extern void pm_runtime_allow(struct device *dev);
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extern void pm_runtime_forbid(struct device *dev);
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extern void pm_runtime_no_callbacks(struct device *dev);
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extern void pm_runtime_irq_safe(struct device *dev);
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extern void __pm_runtime_use_autosuspend(struct device *dev, bool use);
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extern void pm_runtime_set_autosuspend_delay(struct device *dev, int delay);
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extern u64 pm_runtime_autosuspend_expiration(struct device *dev);
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extern void pm_runtime_set_memalloc_noio(struct device *dev, bool enable);
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extern void pm_runtime_get_suppliers(struct device *dev);
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extern void pm_runtime_put_suppliers(struct device *dev);
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extern void pm_runtime_new_link(struct device *dev);
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extern void pm_runtime_drop_link(struct device_link *link);
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extern void pm_runtime_release_supplier(struct device_link *link);
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int devm_pm_runtime_set_active_enabled(struct device *dev);
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extern int devm_pm_runtime_enable(struct device *dev);
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int devm_pm_runtime_get_noresume(struct device *dev);
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/**
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* pm_suspend_ignore_children - Set runtime PM behavior regarding children.
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* @dev: Target device.
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* @enable: Whether or not to ignore possible dependencies on children.
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*
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* The dependencies of @dev on its children will not be taken into account by
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* the runtime PM framework going forward if @enable is %true, or they will
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* be taken into account otherwise.
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*/
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static inline void pm_suspend_ignore_children(struct device *dev, bool enable)
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{
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dev->power.ignore_children = enable;
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}
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/**
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* pm_runtime_get_noresume - Bump up runtime PM usage counter of a device.
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* @dev: Target device.
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*/
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static inline void pm_runtime_get_noresume(struct device *dev)
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{
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atomic_inc(&dev->power.usage_count);
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}
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/**
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* pm_runtime_put_noidle - Drop runtime PM usage counter of a device.
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* @dev: Target device.
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*
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* Decrement the runtime PM usage counter of @dev unless it is 0 already.
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*/
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static inline void pm_runtime_put_noidle(struct device *dev)
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{
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atomic_add_unless(&dev->power.usage_count, -1, 0);
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}
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/**
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* pm_runtime_suspended - Check whether or not a device is runtime-suspended.
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* @dev: Target device.
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*
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* Return %true if runtime PM is enabled for @dev and its runtime PM status is
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* %RPM_SUSPENDED, or %false otherwise.
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*
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* Note that the return value of this function can only be trusted if it is
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* called under the runtime PM lock of @dev or under conditions in which
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* runtime PM cannot be either disabled or enabled for @dev and its runtime PM
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* status cannot change.
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*/
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static inline bool pm_runtime_suspended(struct device *dev)
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{
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return dev->power.runtime_status == RPM_SUSPENDED
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&& !dev->power.disable_depth;
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}
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/**
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* pm_runtime_active - Check whether or not a device is runtime-active.
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* @dev: Target device.
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*
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* Return %true if runtime PM is disabled for @dev or its runtime PM status is
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* %RPM_ACTIVE, or %false otherwise.
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*
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* Note that the return value of this function can only be trusted if it is
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* called under the runtime PM lock of @dev or under conditions in which
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* runtime PM cannot be either disabled or enabled for @dev and its runtime PM
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* status cannot change.
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*/
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static inline bool pm_runtime_active(struct device *dev)
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{
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return dev->power.runtime_status == RPM_ACTIVE
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|| dev->power.disable_depth;
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}
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/**
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* pm_runtime_status_suspended - Check if runtime PM status is "suspended".
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* @dev: Target device.
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*
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* Return %true if the runtime PM status of @dev is %RPM_SUSPENDED, or %false
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* otherwise, regardless of whether or not runtime PM has been enabled for @dev.
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*
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* Note that the return value of this function can only be trusted if it is
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* called under the runtime PM lock of @dev or under conditions in which the
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* runtime PM status of @dev cannot change.
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*/
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static inline bool pm_runtime_status_suspended(struct device *dev)
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{
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return dev->power.runtime_status == RPM_SUSPENDED;
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}
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/**
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* pm_runtime_enabled - Check if runtime PM is enabled.
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* @dev: Target device.
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*
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* Return %true if runtime PM is enabled for @dev or %false otherwise.
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*
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* Note that the return value of this function can only be trusted if it is
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* called under the runtime PM lock of @dev or under conditions in which
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* runtime PM cannot be either disabled or enabled for @dev.
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*/
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static inline bool pm_runtime_enabled(struct device *dev)
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{
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return !dev->power.disable_depth;
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}
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/**
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* pm_runtime_blocked - Check if runtime PM enabling is blocked.
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* @dev: Target device.
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*
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* Do not call this function outside system suspend/resume code paths.
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*/
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static inline bool pm_runtime_blocked(struct device *dev)
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{
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return dev->power.last_status == RPM_BLOCKED;
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}
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/**
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* pm_runtime_has_no_callbacks - Check if runtime PM callbacks may be present.
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* @dev: Target device.
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*
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* Return %true if @dev is a special device without runtime PM callbacks or
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* %false otherwise.
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*/
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static inline bool pm_runtime_has_no_callbacks(struct device *dev)
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{
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return dev->power.no_callbacks;
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}
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/**
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* pm_runtime_mark_last_busy - Update the last access time of a device.
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* @dev: Target device.
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*
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* Update the last access time of @dev used by the runtime PM autosuspend
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* mechanism to the current time as returned by ktime_get_mono_fast_ns().
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*/
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static inline void pm_runtime_mark_last_busy(struct device *dev)
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{
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WRITE_ONCE(dev->power.last_busy, ktime_get_mono_fast_ns());
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}
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/**
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* pm_runtime_is_irq_safe - Check if runtime PM can work in interrupt context.
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* @dev: Target device.
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*
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* Return %true if @dev has been marked as an "IRQ-safe" device (with respect
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* to runtime PM), in which case its runtime PM callabcks can be expected to
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* work correctly when invoked from interrupt handlers.
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*/
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static inline bool pm_runtime_is_irq_safe(struct device *dev)
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{
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return dev->power.irq_safe;
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}
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extern u64 pm_runtime_suspended_time(struct device *dev);
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#else /* !CONFIG_PM */
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static inline bool queue_pm_work(struct work_struct *work) { return false; }
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static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; }
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static inline int pm_generic_runtime_resume(struct device *dev) { return 0; }
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static inline int pm_runtime_force_suspend(struct device *dev) { return 0; }
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static inline int __pm_runtime_idle(struct device *dev, int rpmflags)
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{
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return -ENOSYS;
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}
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static inline int __pm_runtime_suspend(struct device *dev, int rpmflags)
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{
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return -ENOSYS;
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}
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static inline int __pm_runtime_resume(struct device *dev, int rpmflags)
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{
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return 1;
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}
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static inline int pm_schedule_suspend(struct device *dev, unsigned int delay)
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{
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return -ENOSYS;
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}
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static inline int pm_runtime_get_if_in_use(struct device *dev)
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{
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return -EINVAL;
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}
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static inline int pm_runtime_get_if_active(struct device *dev)
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{
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return -EINVAL;
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}
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static inline int __pm_runtime_set_status(struct device *dev,
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unsigned int status) { return 0; }
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static inline int pm_runtime_barrier(struct device *dev) { return 0; }
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static inline bool pm_runtime_block_if_disabled(struct device *dev) { return true; }
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static inline void pm_runtime_unblock(struct device *dev) {}
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static inline void pm_runtime_enable(struct device *dev) {}
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static inline void __pm_runtime_disable(struct device *dev, bool c) {}
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static inline bool pm_runtime_blocked(struct device *dev) { return true; }
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static inline void pm_runtime_allow(struct device *dev) {}
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static inline void pm_runtime_forbid(struct device *dev) {}
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static inline int devm_pm_runtime_set_active_enabled(struct device *dev) { return 0; }
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static inline int devm_pm_runtime_enable(struct device *dev) { return 0; }
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static inline int devm_pm_runtime_get_noresume(struct device *dev) { return 0; }
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static inline void pm_suspend_ignore_children(struct device *dev, bool enable) {}
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static inline void pm_runtime_get_noresume(struct device *dev) {}
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static inline void pm_runtime_put_noidle(struct device *dev) {}
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static inline bool pm_runtime_suspended(struct device *dev) { return false; }
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static inline bool pm_runtime_active(struct device *dev) { return true; }
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static inline bool pm_runtime_status_suspended(struct device *dev) { return false; }
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static inline bool pm_runtime_enabled(struct device *dev) { return false; }
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static inline void pm_runtime_no_callbacks(struct device *dev) {}
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static inline void pm_runtime_irq_safe(struct device *dev) {}
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static inline bool pm_runtime_is_irq_safe(struct device *dev) { return false; }
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static inline bool pm_runtime_has_no_callbacks(struct device *dev) { return false; }
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static inline void pm_runtime_mark_last_busy(struct device *dev) {}
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static inline void __pm_runtime_use_autosuspend(struct device *dev,
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bool use) {}
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static inline void pm_runtime_set_autosuspend_delay(struct device *dev,
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int delay) {}
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static inline u64 pm_runtime_autosuspend_expiration(
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struct device *dev) { return 0; }
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static inline void pm_runtime_set_memalloc_noio(struct device *dev,
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bool enable){}
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static inline void pm_runtime_get_suppliers(struct device *dev) {}
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static inline void pm_runtime_put_suppliers(struct device *dev) {}
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static inline void pm_runtime_new_link(struct device *dev) {}
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static inline void pm_runtime_drop_link(struct device_link *link) {}
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static inline void pm_runtime_release_supplier(struct device_link *link) {}
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#endif /* !CONFIG_PM */
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#ifdef CONFIG_PM_SLEEP
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bool pm_runtime_need_not_resume(struct device *dev);
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int pm_runtime_force_resume(struct device *dev);
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#else /* !CONFIG_PM_SLEEP */
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static inline bool pm_runtime_need_not_resume(struct device *dev) {return true; }
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static inline int pm_runtime_force_resume(struct device *dev) { return -ENXIO; }
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#endif /* CONFIG_PM_SLEEP */
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/**
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* pm_runtime_idle - Conditionally set up autosuspend of a device or suspend it.
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* @dev: Target device.
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*
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* Invoke the "idle check" callback of @dev and, depending on its return value,
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* set up autosuspend of @dev or suspend it (depending on whether or not
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* autosuspend has been enabled for it).
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*
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* Return:
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* * 0: Success.
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* * -EINVAL: Runtime PM error.
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* * -EACCES: Runtime PM disabled.
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* * -EAGAIN: Runtime PM usage_count non-zero, Runtime PM status change ongoing
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* or device not in %RPM_ACTIVE state.
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* * -EBUSY: Runtime PM child_count non-zero.
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* * -EPERM: Device PM QoS resume latency 0.
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* * -EINPROGRESS: Suspend already in progress.
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* * -ENOSYS: CONFIG_PM not enabled.
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* * 1: Device already suspended.
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* Other values and conditions for the above values are possible as returned by
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* Runtime PM idle and suspend callbacks.
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*/
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static inline int pm_runtime_idle(struct device *dev)
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{
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return __pm_runtime_idle(dev, 0);
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}
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/**
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* pm_runtime_suspend - Suspend a device synchronously.
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* @dev: Target device.
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*
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* Return:
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* * 0: Success.
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* * -EINVAL: Runtime PM error.
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* * -EACCES: Runtime PM disabled.
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* * -EAGAIN: Runtime PM usage_count non-zero or Runtime PM status change ongoing.
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* * -EBUSY: Runtime PM child_count non-zero.
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* * -EPERM: Device PM QoS resume latency 0.
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* * -ENOSYS: CONFIG_PM not enabled.
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* * 1: Device already suspended.
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* Other values and conditions for the above values are possible as returned by
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* Runtime PM suspend callbacks.
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*/
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static inline int pm_runtime_suspend(struct device *dev)
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{
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return __pm_runtime_suspend(dev, 0);
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}
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/**
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* pm_runtime_autosuspend - Update the last access time and set up autosuspend
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* of a device.
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* @dev: Target device.
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*
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* First update the last access time, then set up autosuspend of @dev or suspend
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* it (depending on whether or not autosuspend is enabled for it) without
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* engaging its "idle check" callback.
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*
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* Return:
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* * 0: Success.
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* * -EINVAL: Runtime PM error.
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* * -EACCES: Runtime PM disabled.
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* * -EAGAIN: Runtime PM usage_count non-zero or Runtime PM status change ongoing.
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* * -EBUSY: Runtime PM child_count non-zero.
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* * -EPERM: Device PM QoS resume latency 0.
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* * -ENOSYS: CONFIG_PM not enabled.
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* * 1: Device already suspended.
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* Other values and conditions for the above values are possible as returned by
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* Runtime PM suspend callbacks.
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*/
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static inline int pm_runtime_autosuspend(struct device *dev)
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{
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pm_runtime_mark_last_busy(dev);
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return __pm_runtime_suspend(dev, RPM_AUTO);
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}
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/**
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* pm_runtime_resume - Resume a device synchronously.
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* @dev: Target device.
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*/
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static inline int pm_runtime_resume(struct device *dev)
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{
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return __pm_runtime_resume(dev, 0);
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}
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/**
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* pm_request_idle - Queue up "idle check" execution for a device.
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* @dev: Target device.
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*
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* Queue up a work item to run an equivalent of pm_runtime_idle() for @dev
|
|
* asynchronously.
|
|
*
|
|
* Return:
|
|
* * 0: Success.
|
|
* * -EINVAL: Runtime PM error.
|
|
* * -EACCES: Runtime PM disabled.
|
|
* * -EAGAIN: Runtime PM usage_count non-zero, Runtime PM status change ongoing
|
|
* or device not in %RPM_ACTIVE state.
|
|
* * -EBUSY: Runtime PM child_count non-zero.
|
|
* * -EPERM: Device PM QoS resume latency 0.
|
|
* * -EINPROGRESS: Suspend already in progress.
|
|
* * -ENOSYS: CONFIG_PM not enabled.
|
|
* * 1: Device already suspended.
|
|
*/
|
|
static inline int pm_request_idle(struct device *dev)
|
|
{
|
|
return __pm_runtime_idle(dev, RPM_ASYNC);
|
|
}
|
|
|
|
/**
|
|
* pm_request_resume - Queue up runtime-resume of a device.
|
|
* @dev: Target device.
|
|
*/
|
|
static inline int pm_request_resume(struct device *dev)
|
|
{
|
|
return __pm_runtime_resume(dev, RPM_ASYNC);
|
|
}
|
|
|
|
/**
|
|
* pm_request_autosuspend - Update the last access time and queue up autosuspend
|
|
* of a device.
|
|
* @dev: Target device.
|
|
*
|
|
* Update the last access time of a device and queue up a work item to run an
|
|
* equivalent pm_runtime_autosuspend() for @dev asynchronously.
|
|
*
|
|
* Return:
|
|
* * 0: Success.
|
|
* * -EINVAL: Runtime PM error.
|
|
* * -EACCES: Runtime PM disabled.
|
|
* * -EAGAIN: Runtime PM usage_count non-zero or Runtime PM status change ongoing.
|
|
* * -EBUSY: Runtime PM child_count non-zero.
|
|
* * -EPERM: Device PM QoS resume latency 0.
|
|
* * -EINPROGRESS: Suspend already in progress.
|
|
* * -ENOSYS: CONFIG_PM not enabled.
|
|
* * 1: Device already suspended.
|
|
*/
|
|
static inline int pm_request_autosuspend(struct device *dev)
|
|
{
|
|
pm_runtime_mark_last_busy(dev);
|
|
return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO);
|
|
}
|
|
|
|
/**
|
|
* pm_runtime_get - Bump up usage counter and queue up resume of a device.
|
|
* @dev: Target device.
|
|
*
|
|
* Bump up the runtime PM usage counter of @dev and queue up a work item to
|
|
* carry out runtime-resume of it.
|
|
*/
|
|
static inline int pm_runtime_get(struct device *dev)
|
|
{
|
|
return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC);
|
|
}
|
|
|
|
/**
|
|
* pm_runtime_get_sync - Bump up usage counter of a device and resume it.
|
|
* @dev: Target device.
|
|
*
|
|
* Bump up the runtime PM usage counter of @dev and carry out runtime-resume of
|
|
* it synchronously.
|
|
*
|
|
* The possible return values of this function are the same as for
|
|
* pm_runtime_resume() and the runtime PM usage counter of @dev remains
|
|
* incremented in all cases, even if it returns an error code.
|
|
* Consider using pm_runtime_resume_and_get() instead of it, especially
|
|
* if its return value is checked by the caller, as this is likely to result
|
|
* in cleaner code.
|
|
*/
|
|
static inline int pm_runtime_get_sync(struct device *dev)
|
|
{
|
|
return __pm_runtime_resume(dev, RPM_GET_PUT);
|
|
}
|
|
|
|
/**
|
|
* pm_runtime_resume_and_get - Bump up usage counter of a device and resume it.
|
|
* @dev: Target device.
|
|
*
|
|
* Resume @dev synchronously and if that is successful, increment its runtime
|
|
* PM usage counter. Return 0 if the runtime PM usage counter of @dev has been
|
|
* incremented or a negative error code otherwise.
|
|
*/
|
|
static inline int pm_runtime_resume_and_get(struct device *dev)
|
|
{
|
|
int ret;
|
|
|
|
ret = __pm_runtime_resume(dev, RPM_GET_PUT);
|
|
if (ret < 0) {
|
|
pm_runtime_put_noidle(dev);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* pm_runtime_put - Drop device usage counter and queue up "idle check" if 0.
|
|
* @dev: Target device.
|
|
*
|
|
* Decrement the runtime PM usage counter of @dev and if it turns out to be
|
|
* equal to 0, queue up a work item for @dev like in pm_request_idle().
|
|
*
|
|
* Return:
|
|
* * 0: Success.
|
|
* * -EINVAL: Runtime PM error.
|
|
* * -EACCES: Runtime PM disabled.
|
|
* * -EAGAIN: Runtime PM usage_count non-zero or Runtime PM status change ongoing.
|
|
* * -EBUSY: Runtime PM child_count non-zero.
|
|
* * -EPERM: Device PM QoS resume latency 0.
|
|
* * -EINPROGRESS: Suspend already in progress.
|
|
* * -ENOSYS: CONFIG_PM not enabled.
|
|
* * 1: Device already suspended.
|
|
*/
|
|
static inline int pm_runtime_put(struct device *dev)
|
|
{
|
|
return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC);
|
|
}
|
|
|
|
DEFINE_FREE(pm_runtime_put, struct device *, if (_T) pm_runtime_put(_T))
|
|
|
|
/**
|
|
* __pm_runtime_put_autosuspend - Drop device usage counter and queue autosuspend if 0.
|
|
* @dev: Target device.
|
|
*
|
|
* Decrement the runtime PM usage counter of @dev and if it turns out to be
|
|
* equal to 0, queue up a work item for @dev like in pm_request_autosuspend().
|
|
*
|
|
* Return:
|
|
* * 0: Success.
|
|
* * -EINVAL: Runtime PM error.
|
|
* * -EACCES: Runtime PM disabled.
|
|
* * -EAGAIN: Runtime PM usage_count non-zero or Runtime PM status change ongoing.
|
|
* * -EBUSY: Runtime PM child_count non-zero.
|
|
* * -EPERM: Device PM QoS resume latency 0.
|
|
* * -EINPROGRESS: Suspend already in progress.
|
|
* * -ENOSYS: CONFIG_PM not enabled.
|
|
* * 1: Device already suspended.
|
|
*/
|
|
static inline int __pm_runtime_put_autosuspend(struct device *dev)
|
|
{
|
|
return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_ASYNC | RPM_AUTO);
|
|
}
|
|
|
|
/**
|
|
* pm_runtime_put_autosuspend - Update the last access time of a device, drop
|
|
* its usage counter and queue autosuspend if the usage counter becomes 0.
|
|
* @dev: Target device.
|
|
*
|
|
* Update the last access time of @dev, decrement runtime PM usage counter of
|
|
* @dev and if it turns out to be equal to 0, queue up a work item for @dev like
|
|
* in pm_request_autosuspend().
|
|
*
|
|
* Return:
|
|
* * 0: Success.
|
|
* * -EINVAL: Runtime PM error.
|
|
* * -EACCES: Runtime PM disabled.
|
|
* * -EAGAIN: Runtime PM usage_count non-zero or Runtime PM status change ongoing.
|
|
* * -EBUSY: Runtime PM child_count non-zero.
|
|
* * -EPERM: Device PM QoS resume latency 0.
|
|
* * -EINPROGRESS: Suspend already in progress.
|
|
* * -ENOSYS: CONFIG_PM not enabled.
|
|
* * 1: Device already suspended.
|
|
*/
|
|
static inline int pm_runtime_put_autosuspend(struct device *dev)
|
|
{
|
|
pm_runtime_mark_last_busy(dev);
|
|
return __pm_runtime_put_autosuspend(dev);
|
|
}
|
|
|
|
/**
|
|
* pm_runtime_put_sync - Drop device usage counter and run "idle check" if 0.
|
|
* @dev: Target device.
|
|
*
|
|
* Decrement the runtime PM usage counter of @dev and if it turns out to be
|
|
* equal to 0, invoke the "idle check" callback of @dev and, depending on its
|
|
* return value, set up autosuspend of @dev or suspend it (depending on whether
|
|
* or not autosuspend has been enabled for it).
|
|
*
|
|
* The runtime PM usage counter of @dev remains decremented in all cases, even
|
|
* if it returns an error code.
|
|
*
|
|
* Return:
|
|
* * 0: Success.
|
|
* * -EINVAL: Runtime PM error.
|
|
* * -EACCES: Runtime PM disabled.
|
|
* * -EAGAIN: Runtime PM usage_count non-zero or Runtime PM status change ongoing.
|
|
* * -EBUSY: Runtime PM child_count non-zero.
|
|
* * -EPERM: Device PM QoS resume latency 0.
|
|
* * -ENOSYS: CONFIG_PM not enabled.
|
|
* * 1: Device already suspended.
|
|
* Other values and conditions for the above values are possible as returned by
|
|
* Runtime PM suspend callbacks.
|
|
*/
|
|
static inline int pm_runtime_put_sync(struct device *dev)
|
|
{
|
|
return __pm_runtime_idle(dev, RPM_GET_PUT);
|
|
}
|
|
|
|
/**
|
|
* pm_runtime_put_sync_suspend - Drop device usage counter and suspend if 0.
|
|
* @dev: Target device.
|
|
*
|
|
* Decrement the runtime PM usage counter of @dev and if it turns out to be
|
|
* equal to 0, carry out runtime-suspend of @dev synchronously.
|
|
*
|
|
* The runtime PM usage counter of @dev remains decremented in all cases, even
|
|
* if it returns an error code.
|
|
*
|
|
* Return:
|
|
* * 0: Success.
|
|
* * -EINVAL: Runtime PM error.
|
|
* * -EACCES: Runtime PM disabled.
|
|
* * -EAGAIN: Runtime PM usage_count non-zero or Runtime PM status change ongoing.
|
|
* * -EAGAIN: usage_count non-zero or Runtime PM status change ongoing.
|
|
* * -EBUSY: Runtime PM child_count non-zero.
|
|
* * -EPERM: Device PM QoS resume latency 0.
|
|
* * -ENOSYS: CONFIG_PM not enabled.
|
|
* * 1: Device already suspended.
|
|
* Other values and conditions for the above values are possible as returned by
|
|
* Runtime PM suspend callbacks.
|
|
*/
|
|
static inline int pm_runtime_put_sync_suspend(struct device *dev)
|
|
{
|
|
return __pm_runtime_suspend(dev, RPM_GET_PUT);
|
|
}
|
|
|
|
/**
|
|
* pm_runtime_put_sync_autosuspend - Update the last access time of a device,
|
|
* drop device usage counter and autosuspend if 0.
|
|
* @dev: Target device.
|
|
*
|
|
* Update the last access time of @dev, decrement the runtime PM usage counter
|
|
* of @dev and if it turns out to be equal to 0, set up autosuspend of @dev or
|
|
* suspend it synchronously (depending on whether or not autosuspend has been
|
|
* enabled for it).
|
|
*
|
|
* The runtime PM usage counter of @dev remains decremented in all cases, even
|
|
* if it returns an error code.
|
|
*
|
|
* Return:
|
|
* * 0: Success.
|
|
* * -EINVAL: Runtime PM error.
|
|
* * -EACCES: Runtime PM disabled.
|
|
* * -EAGAIN: Runtime PM usage_count non-zero or Runtime PM status change ongoing.
|
|
* * -EBUSY: Runtime PM child_count non-zero.
|
|
* * -EPERM: Device PM QoS resume latency 0.
|
|
* * -EINPROGRESS: Suspend already in progress.
|
|
* * -ENOSYS: CONFIG_PM not enabled.
|
|
* * 1: Device already suspended.
|
|
* Other values and conditions for the above values are possible as returned by
|
|
* Runtime PM suspend callbacks.
|
|
*/
|
|
static inline int pm_runtime_put_sync_autosuspend(struct device *dev)
|
|
{
|
|
pm_runtime_mark_last_busy(dev);
|
|
return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_AUTO);
|
|
}
|
|
|
|
/**
|
|
* pm_runtime_set_active - Set runtime PM status to "active".
|
|
* @dev: Target device.
|
|
*
|
|
* Set the runtime PM status of @dev to %RPM_ACTIVE and ensure that dependencies
|
|
* of it will be taken into account.
|
|
*
|
|
* It is not valid to call this function for devices with runtime PM enabled.
|
|
*/
|
|
static inline int pm_runtime_set_active(struct device *dev)
|
|
{
|
|
return __pm_runtime_set_status(dev, RPM_ACTIVE);
|
|
}
|
|
|
|
/**
|
|
* pm_runtime_set_suspended - Set runtime PM status to "suspended".
|
|
* @dev: Target device.
|
|
*
|
|
* Set the runtime PM status of @dev to %RPM_SUSPENDED and ensure that
|
|
* dependencies of it will be taken into account.
|
|
*
|
|
* It is not valid to call this function for devices with runtime PM enabled.
|
|
*/
|
|
static inline int pm_runtime_set_suspended(struct device *dev)
|
|
{
|
|
return __pm_runtime_set_status(dev, RPM_SUSPENDED);
|
|
}
|
|
|
|
/**
|
|
* pm_runtime_disable - Disable runtime PM for a device.
|
|
* @dev: Target device.
|
|
*
|
|
* Prevent the runtime PM framework from working with @dev by incrementing its
|
|
* "disable" counter.
|
|
*
|
|
* If the counter is zero when this function runs and there is a pending runtime
|
|
* resume request for @dev, it will be resumed. If the counter is still zero at
|
|
* that point, all of the pending runtime PM requests for @dev will be canceled
|
|
* and all runtime PM operations in progress involving it will be waited for to
|
|
* complete.
|
|
*
|
|
* For each invocation of this function for @dev, there must be a matching
|
|
* pm_runtime_enable() call, so that runtime PM is eventually enabled for it
|
|
* again.
|
|
*/
|
|
static inline void pm_runtime_disable(struct device *dev)
|
|
{
|
|
__pm_runtime_disable(dev, true);
|
|
}
|
|
|
|
/**
|
|
* pm_runtime_use_autosuspend - Allow autosuspend to be used for a device.
|
|
* @dev: Target device.
|
|
*
|
|
* Allow the runtime PM autosuspend mechanism to be used for @dev whenever
|
|
* requested (or "autosuspend" will be handled as direct runtime-suspend for
|
|
* it).
|
|
*
|
|
* NOTE: It's important to undo this with pm_runtime_dont_use_autosuspend()
|
|
* at driver exit time unless your driver initially enabled pm_runtime
|
|
* with devm_pm_runtime_enable() (which handles it for you).
|
|
*/
|
|
static inline void pm_runtime_use_autosuspend(struct device *dev)
|
|
{
|
|
__pm_runtime_use_autosuspend(dev, true);
|
|
}
|
|
|
|
/**
|
|
* pm_runtime_dont_use_autosuspend - Prevent autosuspend from being used.
|
|
* @dev: Target device.
|
|
*
|
|
* Prevent the runtime PM autosuspend mechanism from being used for @dev which
|
|
* means that "autosuspend" will be handled as direct runtime-suspend for it
|
|
* going forward.
|
|
*/
|
|
static inline void pm_runtime_dont_use_autosuspend(struct device *dev)
|
|
{
|
|
__pm_runtime_use_autosuspend(dev, false);
|
|
}
|
|
|
|
#endif
|