IODisplayWrangler.h   [plain text]

/*
 * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This 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 OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
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 */

#ifndef _IOKIT_IODISPLAYWRANGLER_H
#define _IOKIT_IODISPLAYWRANGLER_H

#include <IOKit/IOService.h>

#define IOFRAMEBUFFER_PRIVATE
#include <IOKit/graphics/IOFramebuffer.h>
#include <IOKit/graphics/IODisplay.h>

class IODisplayWrangler : public IOService
{
    OSDeclareDefaultStructors( IODisplayWrangler );

private:
    bool        fOpen;

    // from control panel: number of idle minutes before going off
    UInt32      fMinutesToDim;
    // false: use minutesToDim unless in emergency situation
    bool        fDimCaptured;
    bool        fAnnoyed;

    unsigned long fPendingPowerState;

    // ignore activity until time
    AbsoluteTime  fIdleUntil;
    // annoyed wake until time
    AbsoluteTime  fAnnoyanceUntil;

    AbsoluteTime  fDimInterval;
    AbsoluteTime  fSettingsChanged;
    AbsoluteTime  fOffInterval[2];

    AbsoluteTime  fPowerStateChangeTime;

    
    // IOService overrides
private:
    virtual IOReturn setAggressiveness( unsigned long, unsigned long ) APPLE_KEXT_OVERRIDE;
    virtual bool activityTickle( unsigned long, unsigned long ) APPLE_KEXT_OVERRIDE;
    virtual IOReturn setPowerState( unsigned long powerStateOrdinal, IOService* whatDevice ) APPLE_KEXT_OVERRIDE;
    virtual unsigned long initialPowerStateForDomainState( IOPMPowerFlags domainState ) APPLE_KEXT_OVERRIDE;

public:
    virtual bool start(IOService * provider) APPLE_KEXT_OVERRIDE;
    // Adaptive Dimming method
    virtual SInt32 nextIdleTimeout(AbsoluteTime currentTime,
                                   AbsoluteTime lastActivity, unsigned int powerState) APPLE_KEXT_OVERRIDE;

    // IORegistryEntry overrides
public:
    virtual OSObject * copyProperty( const char * aKey) const APPLE_KEXT_OVERRIDE;
    virtual IOReturn setProperties( OSObject * properties ) APPLE_KEXT_OVERRIDE;


private:
    virtual void initForPM( void );

    virtual IODisplayConnect * getDisplayConnect(
                IOFramebuffer * fb, IOIndex connect );

    virtual IOReturn getConnectFlagsForDisplayMode(
                IODisplayConnect * connect,
                IODisplayModeID mode, UInt32 * flags );

public:
    
    static bool serverStart(void);

    static bool makeDisplayConnects( IOFramebuffer * fb );
    static void destroyDisplayConnects( IOFramebuffer * fb );
    static void activityChange( IOFramebuffer * fb );
    static unsigned long getDisplaysPowerState(void);

    static IOReturn getFlagsForDisplayMode(
                IOFramebuffer * fb,
                IODisplayModeID mode, UInt32 * flags );

    void forceIdleImpl();
    static void forceIdle();
};

void IODisplayUpdateNVRAM( IOService * entry, OSData * property );

#endif /* _IOKIT_IODISPLAYWRANGLER_H */