Power Management Functions (Compact 2013)

3/26/2014

This section provides reference details about the power management functions.

In This Section

Function	Description
DevicePowerNotify	Requests that Power Manager change the power state of a device.
GetDevicePower	Returns the current power state for a device.
GetSystemPowerState	Returns the current system power state currently in effect.
PlatformDeviceListInit	Performs platform-specific initialization on a class of devices.
PlatformManageSystemPower	Implements the main event loop for Power Manager.
PlatformMapPowerStateHint	Maps the system power state hint values to known system power states maintained in the registry.
PlatformResumeSystem	Determines the cause of a wakeup of the system, and initiates the appropriate system power state transition.
PlatformSendInitialNotifications	Called when an application requests a power notification.
PlatformSetSystemPowerState	Reads and verifies the system power state information from the registry, and updates all devices appropriately.
PlatformValidatePMRegistry	Verifies the consistency of power management registry settings.
PMExt_DeInit	Called when Power Manager shuts down.
PMExt_EventNotification	Notifies a Power Management Extension of system power activity events.
PMExt_GetNotificationHandle	Provides Power Manager with an event handle for providing notifications to a Power Management Extension.
PMExt_Init	Used to initialize a Power Management Extension.
PMExt_PMAfterNewDeviceState	Called after transitioning to a new device power state.
PMExt_PMBeforeNewDeviceState	Called before transitioning to a new device power state.
PMExt_PMAfterNewSystemState	Called after transitioning to a new system power state
PMExt_PMBeforeNewSystemState	Called before transitioning to a new s power state
PowerPolicyNotify	Notifies Power Manager of the events necessary to implement an OEM power policy.
RegisterPowerRelationship	Establishes dynamic parent and child or bus and client driver relationship.
ReleasePowerRelationship	Releases the handle returned from RegisterPowerRelationship.
ReleasePowerRequirement	Requests that Power Manager release a power requirement previously set with SetPowerRequirement.
RequestPowerNotifications	Enables applications and drivers to register for power notification events.
SetDevicePower	Sets the device power state for a device.
SetPowerRequirement	Notifies Power Manager of an application device power requirement.
SetSystemPowerState	Sets the system power state.
StopPowerNotifications	Disables power notification events.

See Also

Reference

Power Management Reference