This is xnu-8019. See this file in:
/*
 * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 *
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */

#include <IOKit/pwr_mgt/IOPowerConnection.h>

#define super IOService
OSDefineMetaClassAndStructors(IOPowerConnection, IOService)


// **********************************************************************************
// setDesiredDomainState
//
// Parent of the connection calls here to save the childs desire
// **********************************************************************************
void
IOPowerConnection::setDesiredDomainState(unsigned long stateNumber )
{
	desiredDomainState = stateNumber;
}


// **********************************************************************************
// getDesiredDomainState
//
// **********************************************************************************
unsigned long
IOPowerConnection::getDesiredDomainState( void )
{
	return desiredDomainState;
}


// **********************************************************************************
// setChildHasRequestedPower
//
// Parent of the connection calls here when the child requests power
// **********************************************************************************
void
IOPowerConnection::setChildHasRequestedPower( void )
{
	requestFlag = true;
}

// **********************************************************************************
// childHasRequestedPower
//
// Parent of the connection calls here when the child requests power
// **********************************************************************************
bool
IOPowerConnection::childHasRequestedPower( void )
{
	return requestFlag;
}


// **********************************************************************************
// setPreventIdleSleepFlag
//
// **********************************************************************************
void
IOPowerConnection::setPreventIdleSleepFlag( unsigned long flag )
{
	preventIdleSleepFlag = (flag != 0);
}


// **********************************************************************************
// getPreventIdleSleepFlag
//
// **********************************************************************************
bool
IOPowerConnection::getPreventIdleSleepFlag( void )
{
	return preventIdleSleepFlag;
}


// **********************************************************************************
// setPreventSystemSleepFlag
//
// **********************************************************************************
void
IOPowerConnection::setPreventSystemSleepFlag( unsigned long flag )
{
	preventSystemSleepFlag = (flag != 0);
}


// **********************************************************************************
// getPreventSystemSleepFlag
//
// **********************************************************************************
bool
IOPowerConnection::getPreventSystemSleepFlag( void )
{
	return preventSystemSleepFlag;
}


// **********************************************************************************
// setParentKnowsState
//
// Child of the connection calls here to set its reminder that the parent does
// or does not yet know the state if its domain.
// **********************************************************************************
void
IOPowerConnection::setParentKnowsState(bool flag )
{
	stateKnown = flag;
}


// **********************************************************************************
// setParentCurrentPowerFlags
//
// Child of the connection calls here to save what the parent says
// is the state if its domain.
// **********************************************************************************
void
IOPowerConnection::setParentCurrentPowerFlags(IOPMPowerFlags flags )
{
	currentPowerFlags = flags;
}


// **********************************************************************************
// parentKnowsState
//
// **********************************************************************************
bool
IOPowerConnection::parentKnowsState(void )
{
	return stateKnown;
}


// **********************************************************************************
// parentCurrentPowerFlags
//
// **********************************************************************************
IOPMPowerFlags
IOPowerConnection::parentCurrentPowerFlags(void )
{
	return currentPowerFlags;
}


// **********************************************************************************
// setAwaitingAck
//
// **********************************************************************************
void
IOPowerConnection::setAwaitingAck( bool value )
{
	awaitingAck = value;
}


// **********************************************************************************
// getAwaitingAck
//
// **********************************************************************************
bool
IOPowerConnection::getAwaitingAck( void )
{
	return awaitingAck;
}


// **********************************************************************************
// setReadyFlag
//
// **********************************************************************************
void
IOPowerConnection::setReadyFlag( bool flag )
{
	readyFlag = flag;
}


// **********************************************************************************
// getReadyFlag
//
// **********************************************************************************
bool
IOPowerConnection::getReadyFlag( void ) const
{
	return readyFlag;
}