IOGraphicsTypes.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
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */

#ifndef _IOKIT_IOGRAPHICSTYPES_H
#define _IOKIT_IOGRAPHICSTYPES_H


#include <IOKit/IOTypes.h>
#include <IOKit/IOKitKeys.h>

#ifdef __cplusplus
extern "C" {
#endif

#define IOGRAPHICSTYPES_REV     35

typedef SInt32  IOIndex;
typedef UInt32  IOSelect;
typedef UInt32  IOFixed1616;
typedef UInt32  IODisplayVendorID;
typedef UInt32  IODisplayProductID;

typedef SInt32  IODisplayModeID;
enum {
    // This is the ID given to a programmable timing used at boot time
    kIODisplayModeIDBootProgrammable = (IODisplayModeID)0xFFFFFFFB,
    // Lowest (unsigned) DisplayModeID reserved by Apple
    kIODisplayModeIDReservedBase     = (IODisplayModeID)0x80000000
};

enum {
    kIOMaxPixelBits     = 64
};
typedef char IOPixelEncoding[ kIOMaxPixelBits ];

// Common Apple pixel formats

#define IO1BitIndexedPixels     "P"
#define IO2BitIndexedPixels     "PP"
#define IO4BitIndexedPixels     "PPPP"
#define IO8BitIndexedPixels     "PPPPPPPP"
#define IO16BitDirectPixels     "-RRRRRGGGGGBBBBB"
#define IO32BitDirectPixels     "--------RRRRRRRRGGGGGGGGBBBBBBBB"

#define kIO30BitDirectPixels    "--RRRRRRRRRRGGGGGGGGGGBBBBBBBBBB"
#define kIO64BitDirectPixels    "-16R16G16B16"

#define kIO16BitFloatPixels     "-16FR16FG16FB16"
#define kIO32BitFloatPixels     "-32FR32FG32FB32"

// other possible pixel formats

#define IOYUV422Pixels          "Y4U2V2"
#define IO8BitOverlayPixels     "O8"
// page flipping
#define IOPagedPixels           "Page1"

#define IO_SampleTypeAlpha      'A'
#define IO_SampleTypeSkip       '-'

// Info about a pixel format
enum {
    kIOCLUTPixels                   = 0,
    kIOFixedCLUTPixels              = 1,
    kIORGBDirectPixels              = 2,
    kIOMonoDirectPixels             = 3,
    kIOMonoInverseDirectPixels      = 4,
    kIORGBSignedDirectPixels        = 5,
    kIORGBSignedFloatingPointPixels = 6
};

/*!
 * @struct IOPixelInformation
 * @abstract A structure defining the format of a framebuffer.
 * @discussion This structure is used by IOFramebuffer to define the format of the pixels.
 * @field bytesPerRow The number of bytes per row.
 * @field bytesPerPlane Not used.
 * @field bitsPerPixel The number of bits per pixel, including unused bits and alpha.
 * @field pixelType One of kIOCLUTPixels (indexed pixels with changeable CLUT), kIORGBDirectPixels (direct pixels).
 * @field componentCount One for indexed pixels, three for direct pixel formats.
 * @field bitsPerComponent Number of bits per component in each pixel.
 * @field componentMasks Mask of the bits valid for each component of the pixel - in R, G, B order for direct pixels.
 * @field pixelFormat String description of the pixel format - IO32BitDirectPixels, IO16BitDirectPixels etc.
 * @field flags None defined - set to zero.
 * @field activeWidth Number of pixels visible per row.
 * @field activeHeight Number of visible pixel rows.
 * @field reserved Set to zero.
 */

struct IOPixelInformation {
    UInt32                      bytesPerRow;
    UInt32                      bytesPerPlane;
    UInt32                      bitsPerPixel;
    UInt32                      pixelType;
    UInt32                      componentCount;
    UInt32                      bitsPerComponent;
    UInt32                      componentMasks[ 8 * 2 ];
    IOPixelEncoding             pixelFormat;
    UInt32                      flags;
    UInt32                      activeWidth;
    UInt32                      activeHeight;
    UInt32                      reserved[ 2 ];
};
typedef struct IOPixelInformation IOPixelInformation;

// ID for industry standard display timings
typedef UInt32  IOAppleTimingID;

/*!
 * @struct IODisplayModeInformation
 * @abstract A structure defining the format of a framebuffer.
 * @discussion This structure is used by IOFramebuffer to define the format of the pixels.
 * @field nominalWidth Number of pixels visible per row.
 * @field nominalHeight Number of visible pixel rows.
 * @field refreshRate Refresh rate in fixed point 16.16.
 * @field maxDepthIndex Highest depth index available in this display mode.
 * @field flags Flags for the mode, including: <br>
 *   kDisplayModeInterlacedFlag mode is interlaced. <br>
 *   kDisplayModeSimulscanFlag mode is available on multiple display connections. <br>
 *   kDisplayModeNotPresetFlag mode is not a factory preset for the display (geometry may need correction). <br>
 *   kDisplayModeStretchedFlag mode is stretched/distorted to match the display aspect ratio. <br>
 * @field imageWidth Physical width of active image if known, in millimeters, otherwise zero. <br>
 * @field imageHeight Physical height of active image if known, in millimeters, otherwise zero. <br>
 * @field reserved Set to zero.
 */

struct IODisplayModeInformation {
    UInt32                      nominalWidth;
    UInt32                      nominalHeight;
    IOFixed1616                 refreshRate;
    IOIndex                     maxDepthIndex;
    UInt32                      flags;
    UInt16						imageWidth;
    UInt16						imageHeight;
    UInt32                      reserved[ 3 ];
};
typedef struct IODisplayModeInformation IODisplayModeInformation;

// flags
enum {
    kDisplayModeSafetyFlags             = 0x00000007,

    kDisplayModeAlwaysShowFlag          = 0x00000008,
    kDisplayModeNeverShowFlag           = 0x00000080,
    kDisplayModeNotResizeFlag           = 0x00000010,
    kDisplayModeRequiresPanFlag         = 0x00000020,

    kDisplayModeInterlacedFlag          = 0x00000040,

    kDisplayModeSimulscanFlag           = 0x00000100,
    kDisplayModeBuiltInFlag             = 0x00000400,
    kDisplayModeNotPresetFlag           = 0x00000200,
    kDisplayModeStretchedFlag           = 0x00000800,
    kDisplayModeNotGraphicsQualityFlag  = 0x00001000,
    kDisplayModeValidateAgainstDisplay  = 0x00002000,
    kDisplayModeTelevisionFlag          = 0x00100000,
    kDisplayModeValidForMirroringFlag   = 0x00200000,
    kDisplayModeAcceleratorBackedFlag   = 0x00400000,
    kDisplayModeValidForHiResFlag       = 0x00800000,
    kDisplayModeValidForAirPlayFlag     = 0x01000000
};
enum {
    kDisplayModeValidFlag               = 0x00000001,
    kDisplayModeSafeFlag                = 0x00000002,
    kDisplayModeDefaultFlag             = 0x00000004
};

#ifndef KERNEL
// Framebuffer info - obsolete

struct IOFramebufferInformation {
    IOPhysicalAddress           baseAddress;
    UInt32                      activeWidth;
    UInt32                      activeHeight;
    IOByteCount                 bytesPerRow;
    IOByteCount                 bytesPerPlane;
    UInt32                      bitsPerPixel;
    UInt32                      pixelType;
    UInt32                      flags;
    UInt32                      reserved[ 4 ];
};
typedef struct IOFramebufferInformation IOFramebufferInformation;
#endif

// flags
enum {
    kFramebufferSupportsCopybackCache   = 0x00010000,
    kFramebufferSupportsWritethruCache  = 0x00020000,
    kFramebufferSupportsGammaCorrection = 0x00040000,
    kFramebufferDisableAltivecAccess    = 0x00080000
};

// Aperture is an index into supported pixel formats for a mode & depth
typedef IOIndex IOPixelAperture;
enum {
    kIOFBSystemAperture = 0
};

//// CLUTs

typedef UInt16 IOColorComponent;

/*!
 * @struct IOColorEntry
 * @abstract A structure defining one entry of a color lookup table.
 * @discussion This structure is used by IOFramebuffer to define an entry of a color lookup table.
 * @field index Number of pixels visible per row.
 * @field red Value of red component 0-65535.
 * @field green Value of green component 0-65535.
 * @field blue Value of blue component 0-65535.
 */

struct IOColorEntry {
    UInt16                      index;
    IOColorComponent            red;
    IOColorComponent            green;
    IOColorComponent            blue;
};
typedef struct IOColorEntry IOColorEntry;

// options (masks)
enum {
    kSetCLUTByValue             = 0x00000001,           // else at index
    kSetCLUTImmediately         = 0x00000002,           // else at VBL
    kSetCLUTWithLuminance       = 0x00000004            // else RGB
};

//// Controller attributes

enum {
    kIOPowerStateAttribute              = 'pwrs',
    kIOPowerAttribute                   = 'powr',
    kIODriverPowerAttribute             = 'dpow',
    kIOHardwareCursorAttribute          = 'crsr',

    kIOMirrorAttribute                  = 'mirr',
    kIOMirrorDefaultAttribute           = 'mrdf',

    kIOCapturedAttribute                = 'capd',

    kIOCursorControlAttribute           = 'crsc',

    kIOSystemPowerAttribute             = 'spwr',
    kIOVRAMSaveAttribute                = 'vrsv',
    kIODeferCLUTSetAttribute            = 'vclt',

    kIOClamshellStateAttribute          = 'clam',

	kIOFBDisplayPortTrainingAttribute   = 'dpta',
};

// values for kIOMirrorAttribute
enum {
    kIOMirrorIsPrimary                  = 0x80000000,
    kIOMirrorHWClipped                  = 0x40000000,
    kIOMirrorIsMirrored                 = 0x20000000
};

// values for kIOMirrorDefaultAttribute
enum {
    kIOMirrorDefault                    = 0x00000001,
    kIOMirrorForced                     = 0x00000002
};

//// Display mode timing information

struct IODetailedTimingInformationV1 {
    // from EDID defn
    UInt32                      pixelClock;             // Hertz
    UInt32                      horizontalActive;       // pixels
    UInt32                      horizontalBlanking;     // pixels
    UInt32                      horizontalBorder;       // pixels
    UInt32                      horizontalSyncOffset;   // pixels
    UInt32                      horizontalSyncWidth;    // pixels
    UInt32                      verticalActive;         // lines
    UInt32                      verticalBlanking;       // lines
    UInt32                      verticalBorder;         // lines
    UInt32                      verticalSyncOffset;     // lines
    UInt32                      verticalSyncWidth;      // lines
};
typedef struct IODetailedTimingInformationV1 IODetailedTimingInformationV1;

/*!
 * @struct IODetailedTimingInformationV2
 * @abstract A structure defining the detailed timing information of a display mode.
 * @discussion This structure is used by IOFramebuffer to define detailed timing information for a display mode. The VESA EDID document has more information.
 * @field __reservedA Set to zero.
 * @field horizontalScaledInset If the mode is scaled, sets the number of active pixels to remove the left and right edges in order to display an underscanned image.
 * @field verticalScaledInset If the mode is scaled, sets the number of active lines to remove the top and bottom edges in order to display an underscanned image.
 * @field scalerFlags If the mode is scaled,
 *    kIOScaleStretchToFit may be set to allow stretching.
 *    kIOScaleRotateFlags is mask which may have the value given by kIOScaleRotate90, kIOScaleRotate180, kIOScaleRotate270 to display a rotated framebuffer.
 * @field horizontalScaled If the mode is scaled, sets the size of the image before scaling or rotation.
 * @field verticalScaled If the mode is scaled, sets the size of the image before scaling or rotation.
 * @field signalConfig 
 *    kIOAnalogSetupExpected set if display expects a blank-to-black setup or pedestal.  See VESA signal standards. <br>
 *    kIOInterlacedCEATiming set for a CEA style interlaced timing:<br>
 *      Field 1 vertical blanking = half specified vertical blanking lines. <br>
 *      Field 2 vertical blanking = (half vertical blanking lines) + 1 line. <br>
 *      Field 1 vertical offset = half specified vertical sync offset. <br>
 *      Field 2 vertical offset = (half specified vertical sync offset) + 0.5 lines. <br>
 * @field signalLevels One of:<br>
 *   kIOAnalogSignalLevel_0700_0300 0.700 - 0.300 V p-p.<br>
 *   kIOAnalogSignalLevel_0714_0286 0.714 - 0.286 V p-p.<br>
 *   kIOAnalogSignalLevel_1000_0400 1.000 - 0.400 V p-p.<br>
 *   kIOAnalogSignalLevel_0700_0000 0.700 - 0.000 V p-p.<br>
 * @field pixelClock Pixel clock frequency in Hz.
 * @field minPixelClock Minimum pixel clock frequency in Hz, with error.
 * @field maxPixelClock Maximum pixel clock frequency in Hz, with error.
 * @field horizontalActive Pixel clocks per line.
 * @field horizontalBlanking Blanking clocks per line.
 * @field horizontalSyncOffset First clock of horizontal sync.
 * @field horizontalSyncPulseWidth Width of horizontal sync.
 * @field verticalActive Number of lines per frame.
 * @field verticalBlanking Blanking lines per frame.
 * @field verticalSyncOffset First line of vertical sync.
 * @field verticalSyncPulseWidth Height of vertical sync.
 * @field horizontalBorderLeft Number of pixels in left horizontal border.
 * @field horizontalBorderRight Number of pixels in right horizontal border.
 * @field verticalBorderTop Number of lines in top vertical border.
 * @field verticalBorderBottom Number of lines in bottom vertical border.
 * @field horizontalSyncConfig kIOSyncPositivePolarity for positive polarity horizontal sync (0 for negative).
 * @field horizontalSyncLevel Zero.
 * @field verticalSyncConfig kIOSyncPositivePolarity for positive polarity vertical sync (0 for negative).
 * @field verticalSyncLevel Zero.
 * @field numLinks number of links to be used by a dual link timing, if zero, assume one link.
 * @field __reservedB Reserved set to zero.
 */

struct IODetailedTimingInformationV2 {

    UInt32      __reservedA[3];                 // Init to 0
    UInt32      horizontalScaledInset;          // pixels
    UInt32      verticalScaledInset;            // lines

    UInt32      scalerFlags;
    UInt32      horizontalScaled;
    UInt32      verticalScaled;

    UInt32      signalConfig;
    UInt32      signalLevels;

    UInt64      pixelClock;                     // Hz

    UInt64      minPixelClock;                  // Hz - With error what is slowest actual clock
    UInt64      maxPixelClock;                  // Hz - With error what is fasted actual clock

    UInt32      horizontalActive;               // pixels
    UInt32      horizontalBlanking;             // pixels
    UInt32      horizontalSyncOffset;           // pixels
    UInt32      horizontalSyncPulseWidth;       // pixels

    UInt32      verticalActive;                 // lines
    UInt32      verticalBlanking;               // lines
    UInt32      verticalSyncOffset;             // lines
    UInt32      verticalSyncPulseWidth;         // lines

    UInt32      horizontalBorderLeft;           // pixels
    UInt32      horizontalBorderRight;          // pixels
    UInt32      verticalBorderTop;              // lines
    UInt32      verticalBorderBottom;           // lines

    UInt32      horizontalSyncConfig;
    UInt32      horizontalSyncLevel;            // Future use (init to 0)
    UInt32      verticalSyncConfig;
    UInt32      verticalSyncLevel;              // Future use (init to 0)
    UInt32      numLinks;

    UInt32      __reservedB[7];                 // Init to 0
};
typedef struct IODetailedTimingInformationV2 IODetailedTimingInformationV2;
typedef struct IODetailedTimingInformationV2 IODetailedTimingInformation;

struct IOTimingInformation {
    IOAppleTimingID             appleTimingID;  // kIOTimingIDXXX const
    UInt32                      flags;
    union {
      IODetailedTimingInformationV1     v1;
      IODetailedTimingInformationV2     v2;
    }                           detailedInfo;
};
typedef struct IOTimingInformation IOTimingInformation;

enum {
    // IOTimingInformation flags
    kIODetailedTimingValid      = 0x80000000,
    kIOScalingInfoValid         = 0x40000000
};

enum {
    // scalerFlags
    kIOScaleStretchToFit        = 0x00000001,

    kIOScaleRotateFlags         = 0x000000f0,

    kIOScaleSwapAxes            = 0x00000010,
    kIOScaleInvertX             = 0x00000020,
    kIOScaleInvertY             = 0x00000040,

    kIOScaleRotate0             = 0x00000000,
    kIOScaleRotate90            = kIOScaleSwapAxes | kIOScaleInvertX,
    kIOScaleRotate180           = kIOScaleInvertX  | kIOScaleInvertY,
    kIOScaleRotate270           = kIOScaleSwapAxes | kIOScaleInvertY
};


#pragma pack(push, 4)
struct IOFBDisplayModeDescription {
    IODisplayModeInformation    info;
    IOTimingInformation         timingInfo;
};
typedef struct IOFBDisplayModeDescription IOFBDisplayModeDescription;
#pragma pack(pop)

/*!
 * @struct IODisplayTimingRange
 * @abstract A structure defining the limits and attributes of a display or framebuffer.
 * @discussion This structure is used to define the limits for modes programmed as detailed timings by the OS. The VESA EDID is useful background information for many of these fields. A data property with this structure under the key kIOFBTimingRangeKey in a framebuffer will allow the OS to program detailed timings that fall within its range.
 * @field __reservedA Set to zero.
 * @field version Set to zero.
 * @field __reservedB Set to zero.
 * @field minPixelClock minimum pixel clock frequency in range, in Hz.
 * @field minPixelClock maximum pixel clock frequency in range, in Hz.
 * @field maxPixelError largest variation between specified and actual pixel clock frequency, in Hz.
 * @field supportedSyncFlags mask of supported sync attributes. The following are defined:<br>
 *    kIORangeSupportsSeparateSyncs - digital separate syncs.<br>
 *    kIORangeSupportsSyncOnGreen - sync on green.<br>
 *    kIORangeSupportsCompositeSync - composite sync.<br>
 *    kIORangeSupportsVSyncSerration - vertical sync has serration and equalization pulses.<br>
 * @field supportedSignalLevels mask of possible signal levels. The following are defined:<br>
 *    kIORangeSupportsSignal_0700_0300 0.700 - 0.300 V p-p.<br>
 *    kIORangeSupportsSignal_0714_0286 0.714 - 0.286 V p-p.<br>
 *    kIORangeSupportsSignal_1000_0400 1.000 - 0.400 V p-p.<br>
 *    kIORangeSupportsSignal_0700_0000 0.700 - 0.000 V p-p.<br>
 * @field supportedSignalConfigs mask of possible signal configurations. The following are defined:<br>
 *    kIORangeSupportsInterlacedCEATiming Supports CEA style interlaced timing:<br>
 *      Field 1 vertical blanking = specified vertical blanking lines. <br>
 *      Field 2 vertical blanking = vertical blanking lines + 1 line. <br> 
 *      Field 1 vertical offset = specified vertical sync offset. <br>
 *      Field 2 vertical offset = specified vertical sync offset + 0.5 lines. <br>
 *    kIORangeSupportsInterlacedCEATimingWithConfirm Supports CEA style interlaced timing, but require a confirm.
 * @field minFrameRate minimum frame rate (vertical refresh frequency) in range, in Hz.
 * @field maxFrameRate maximum frame rate (vertical refresh frequency) in range, in Hz.
 * @field minLineRate minimum line rate (horizontal refresh frequency) in range, in Hz.
 * @field maxLineRate maximum line rate (horizontal refresh frequency) in range, in Hz.
 * @field maxHorizontalTotal maximum clocks in horizontal line (active + blanking).
 * @field maxVerticalTotal maximum lines in vertical frame (active + blanking).
 * @field __reservedD Set to zero.
 * @field charSizeHorizontalActive horizontalActive must be a multiple of charSizeHorizontalActive.
 * @field charSizeHorizontalBlanking horizontalBlanking must be a multiple of charSizeHorizontalBlanking.
 * @field charSizeHorizontalSyncOffset horizontalSyncOffset must be a multiple of charSizeHorizontalSyncOffset.
 * @field charSizeHorizontalSyncPulse horizontalSyncPulse must be a multiple of charSizeHorizontalSyncPulse.
 * @field charSizeVerticalActive verticalActive must be a multiple of charSizeVerticalActive.
 * @field charSizeVerticalBlanking verticalBlanking must be a multiple of charSizeVerticalBlanking.
 * @field charSizeVerticalSyncOffset verticalSyncOffset must be a multiple of charSizeVerticalSyncOffset.
 * @field charSizeVerticalSyncPulse verticalSyncPulse must be a multiple of charSizeVerticalSyncPulse.
 * @field charSizeHorizontalBorderLeft horizontalBorderLeft must be a multiple of charSizeHorizontalBorderLeft.
 * @field charSizeHorizontalBorderRight horizontalBorderRight must be a multiple of charSizeHorizontalBorderRight.
 * @field charSizeVerticalBorderTop verticalBorderTop must be a multiple of charSizeVerticalBorderTop.
 * @field charSizeVerticalBorderBottom verticalBorderBottom must be a multiple of charSizeVerticalBorderBottom.
 * @field charSizeHorizontalTotal (horizontalActive + horizontalBlanking) must be a multiple of charSizeHorizontalTotal.
 * @field charSizeVerticalTotal (verticalActive + verticalBlanking) must be a multiple of charSizeVerticalTotal.
 * @field __reservedE Set to zero.
 * @field minHorizontalActiveClocks minimum value of horizontalActive.
 * @field maxHorizontalActiveClocks maximum value of horizontalActive.
 * @field minHorizontalBlankingClocks minimum value of horizontalBlanking.
 * @field maxHorizontalBlankingClocks maximum value of horizontalBlanking.
 * @field minHorizontalSyncOffsetClocks minimum value of horizontalSyncOffset.
 * @field maxHorizontalSyncOffsetClocks maximum value of horizontalSyncOffset.
 * @field minHorizontalPulseWidthClocks minimum value of horizontalPulseWidth.
 * @field maxHorizontalPulseWidthClocks maximum value of horizontalPulseWidth.
 * @field minVerticalActiveClocks minimum value of verticalActive.
 * @field maxVerticalActiveClocks maximum value of verticalActive.
 * @field minVerticalBlankingClocks minimum value of verticalBlanking.
 * @field maxVerticalBlankingClocks maximum value of verticalBlanking.
 * @field minVerticalSyncOffsetClocks minimum value of verticalSyncOffset.
 * @field maxVerticalSyncOffsetClocks maximum value of verticalSyncOffset.
 * @field minVerticalPulseWidthClocks minimum value of verticalPulseWidth.
 * @field maxVerticalPulseWidthClocks maximum value of verticalPulseWidth.
 * @field minHorizontalBorderLeft minimum value of horizontalBorderLeft.
 * @field maxHorizontalBorderLeft maximum value of horizontalBorderLeft.
 * @field minHorizontalBorderRight minimum value of horizontalBorderRight.
 * @field maxHorizontalBorderRight maximum value of horizontalBorderRight.
 * @field minVerticalBorderTop minimum value of verticalBorderTop.
 * @field maxVerticalBorderTop maximum value of verticalBorderTop.
 * @field minVerticalBorderBottom minimum value of verticalBorderBottom.
 * @field maxVerticalBorderBottom maximum value of verticalBorderBottom.
 * @field maxNumLinks number of links supported, if zero, 1 link is assumed.
 * @field minLink0PixelClock minimum pixel clock for link 0 (kHz).
 * @field maxLink0PixelClock maximum pixel clock for link 0 (kHz).
 * @field minLink1PixelClock minimum pixel clock for link 1 (kHz).
 * @field maxLink1PixelClock maximum pixel clock for link 1 (kHz).
 * @field __reservedF Set to zero.
 */

struct IODisplayTimingRange
{
    UInt32      __reservedA[2];                 // Init to 0
    UInt32      version;                        // Init to 0
    UInt32      __reservedB[5];                 // Init to 0

    UInt64      minPixelClock;                  // Min dot clock in Hz
    UInt64      maxPixelClock;                  // Max dot clock in Hz

    UInt32      maxPixelError;                  // Max dot clock error
    UInt32      supportedSyncFlags;
    UInt32      supportedSignalLevels;
    UInt32      supportedSignalConfigs;

    UInt32      minFrameRate;                   // Hz
    UInt32      maxFrameRate;                   // Hz
    UInt32      minLineRate;                    // Hz
    UInt32      maxLineRate;                    // Hz

    UInt32      maxHorizontalTotal;             // Clocks - Maximum total (active + blanking)
    UInt32      maxVerticalTotal;               // Clocks - Maximum total (active + blanking)
    UInt32      __reservedD[2];                 // Init to 0

    UInt8       charSizeHorizontalActive;
    UInt8       charSizeHorizontalBlanking;     
    UInt8       charSizeHorizontalSyncOffset; 
    UInt8       charSizeHorizontalSyncPulse; 

    UInt8       charSizeVerticalActive;         
    UInt8       charSizeVerticalBlanking;       
    UInt8       charSizeVerticalSyncOffset;     
    UInt8       charSizeVerticalSyncPulse;      

    UInt8       charSizeHorizontalBorderLeft; 
    UInt8       charSizeHorizontalBorderRight; 
    UInt8       charSizeVerticalBorderTop;      
    UInt8       charSizeVerticalBorderBottom; 

    UInt8       charSizeHorizontalTotal;                // Character size for active + blanking
    UInt8       charSizeVerticalTotal;                  // Character size for active + blanking
    UInt16      __reservedE;                            // Reserved (Init to 0)

    UInt32      minHorizontalActiveClocks;
    UInt32      maxHorizontalActiveClocks;
    UInt32      minHorizontalBlankingClocks;
    UInt32      maxHorizontalBlankingClocks;

    UInt32      minHorizontalSyncOffsetClocks;
    UInt32      maxHorizontalSyncOffsetClocks;
    UInt32      minHorizontalPulseWidthClocks;
    UInt32      maxHorizontalPulseWidthClocks;

    UInt32      minVerticalActiveClocks;
    UInt32      maxVerticalActiveClocks;
    UInt32      minVerticalBlankingClocks;
    UInt32      maxVerticalBlankingClocks;

    UInt32      minVerticalSyncOffsetClocks;
    UInt32      maxVerticalSyncOffsetClocks;
    UInt32      minVerticalPulseWidthClocks;
    UInt32      maxVerticalPulseWidthClocks;

    UInt32      minHorizontalBorderLeft;
    UInt32      maxHorizontalBorderLeft;
    UInt32      minHorizontalBorderRight;
    UInt32      maxHorizontalBorderRight;

    UInt32      minVerticalBorderTop;
    UInt32      maxVerticalBorderTop;
    UInt32      minVerticalBorderBottom;
    UInt32      maxVerticalBorderBottom;
    UInt32      maxNumLinks;                       // number of links, if zero, assume link 1
    UInt32      minLink0PixelClock;                // min pixel clock for link 0 (kHz)
    UInt32      maxLink0PixelClock;                // max pixel clock for link 0 (kHz)
    UInt32      minLink1PixelClock;                // min pixel clock for link 1 (kHz)
    UInt32      maxLink1PixelClock;                // max pixel clock for link 1 (kHz)

    UInt32      __reservedF[3];                 // Init to 0
};
typedef struct IODisplayTimingRange  IODisplayTimingRange;

enum {
    // supportedSignalLevels
    kIORangeSupportsSignal_0700_0300    = 0x00000001,
    kIORangeSupportsSignal_0714_0286    = 0x00000002,
    kIORangeSupportsSignal_1000_0400    = 0x00000004,
    kIORangeSupportsSignal_0700_0000    = 0x00000008
};
enum {
    // supportedSyncFlags
    kIORangeSupportsSeparateSyncs        = 0x00000001,
    kIORangeSupportsSyncOnGreen          = 0x00000002,
    kIORangeSupportsCompositeSync        = 0x00000004,
    kIORangeSupportsVSyncSerration       = 0x00000008
};
enum {
    // supportedSignalConfigs
    kIORangeSupportsInterlacedCEATiming            = 0x00000004,
    kIORangeSupportsInterlacedCEATimingWithConfirm = 0x00000008
};

enum {
    // signalConfig
    kIODigitalSignal          = 0x00000001,
    kIOAnalogSetupExpected    = 0x00000002,
    kIOInterlacedCEATiming    = 0x00000004,
    kIONTSCTiming             = 0x00000008,
    kIOPALTiming              = 0x00000010
};

enum {
    // signalLevels for analog
    kIOAnalogSignalLevel_0700_0300 = 0,
    kIOAnalogSignalLevel_0714_0286 = 1,
    kIOAnalogSignalLevel_1000_0400 = 2,
    kIOAnalogSignalLevel_0700_0000 = 3
};

enum {
    // horizontalSyncConfig and verticalSyncConfig
    kIOSyncPositivePolarity     = 0x00000001
};

/*!
 * @struct IODisplayScalerInformation
 * @abstract A structure defining the scaling capabilities of a framebuffer.
 * @discussion This structure is used to define the limits for modes programmed as detailed timings by the OS. A data property with this structure under the key kIOFBScalerInfoKey in a framebuffer will allow the OS to program detailed timings that are scaled to a displays native resolution.
 * @field __reservedA Set to zero.
 * @field version Set to zero.
 * @field __reservedB Set to zero.
 * @field scalerFeatures Mask of scaling features. The following are defined:<br>
 *   kIOScaleStretchOnly If set the framebuffer can only provide stretched scaling with non-square pixels, without borders.<br>
 *   kIOScaleCanUpSamplePixels If set framebuffer can scale up from a smaller number of source pixels to a larger native timing (eg. 640x480 pixels on a 1600x1200 timing).<br>
 *   kIOScaleCanDownSamplePixels If set framebuffer can scale down from a larger number of source pixels to a smaller native timing (eg. 1600x1200 pixels on a 640x480 timing).<br>
 *   kIOScaleCanScaleInterlaced If set framebuffer can scale an interlaced detailed timing.<br>
 *   kIOScaleCanSupportInset If set framebuffer can support scaled modes with non-zero horizontalScaledInset, verticalScaledInset fields.<br>
 *   kIOScaleCanRotate If set framebuffer can support some of the flags in the kIOScaleRotateFlags mask.<br>
 *   kIOScaleCanBorderInsetOnly If set framebuffer can support scaled modes with non-zero horizontalScaledInset, verticalScaledInset fields, but requires the active pixels to be equal in size to the inset area, ie. can do insets with a border versus scaling an image.<br>
 * @field maxHorizontalPixels Maximum number of horizontal source pixels (horizontalScaled).<br>
 * @field maxVerticalPixels Maximum number of vertical source pixels (verticalScaled).<br>
 * @field __reservedC Set to zero.
 */

struct IODisplayScalerInformation {
    UInt32              __reservedA[1];         // Init to 0
    UInt32              version;                // Init to 0
    UInt32              __reservedB[2];         // Init to 0
    
    IOOptionBits        scalerFeatures;
    UInt32              maxHorizontalPixels;
    UInt32              maxVerticalPixels;
    UInt32              __reservedC[5];         // Init to 0
};
typedef struct IODisplayScalerInformation IODisplayScalerInformation;

enum {
    /* scalerFeatures */
    kIOScaleStretchOnly           = 0x00000001,
    kIOScaleCanUpSamplePixels     = 0x00000002,
    kIOScaleCanDownSamplePixels   = 0x00000004,
    kIOScaleCanScaleInterlaced    = 0x00000008,
    kIOScaleCanSupportInset       = 0x00000010,
    kIOScaleCanRotate             = 0x00000020,
    kIOScaleCanBorderInsetOnly    = 0x00000040
};

//// Connections

enum {
    kOrConnections                      = 0xffffffe,
    kAndConnections                     = 0xffffffd
};

enum {
    kConnectionFlags                    = 'flgs',
    kConnectionSyncEnable               = 'sync',
    kConnectionSyncFlags                = 'sycf',
    kConnectionSupportsAppleSense       = 'asns',
    kConnectionSupportsLLDDCSense       = 'lddc',
    kConnectionSupportsHLDDCSense       = 'hddc',
    kConnectionEnable                   = 'enab',
    kConnectionCheckEnable              = 'cena',
    kConnectionProbe                    = 'prob',
    kConnectionChanged                  = 'chng',
    kConnectionPower                    = 'powr',
    kConnectionPostWake                 = 'pwak',
    kConnectionDisplayParameterCount    = 'pcnt',
    kConnectionDisplayParameters        = 'parm',
    kConnectionOverscan                 = 'oscn',
    kConnectionVideoBest                = 'vbst',

    kConnectionRedGammaScale            = 'rgsc',
    kConnectionGreenGammaScale          = 'ggsc',
    kConnectionBlueGammaScale           = 'bgsc',

    kConnectionHandleDisplayPortEvent   = 'dpir',

    kConnectionPanelTimingDisable       = 'pnlt',

    kConnectionColorMode                = 'cyuv',
    kConnectionColorModesSupported      = 'colr',
    kConnectionColorDepthsSupported     = ' bpc',

    kConnectionControllerDepthsSupported = '\0grd',
    kConnectionControllerColorDepth      = '\0dpd',
    kConnectionControllerDitherControl   = '\0gdc',

    kConnectionDisplayFlags              = 'dflg',

    kConnectionEnableAudio               = 'aud ',
};

// kConnectionFlags values
enum {
    kIOConnectionBuiltIn                = 0x00000800,
    kIOConnectionStereoSync             = 0x00008000
};

// kConnectionSyncControl values
enum {
    kIOHSyncDisable                     = 0x00000001,
    kIOVSyncDisable                     = 0x00000002,
    kIOCSyncDisable                     = 0x00000004,
    kIONoSeparateSyncControl            = 0x00000040,
    kIOTriStateSyncs                    = 0x00000080,
    kIOSyncOnBlue                       = 0x00000008,
    kIOSyncOnGreen                      = 0x00000010,
    kIOSyncOnRed                        = 0x00000020
};

// kConnectionHandleDisplayPortEvent values
enum {
    kIODPEventStart                             = 1,
    kIODPEventIdle                              = 2,

    kIODPEventForceRetrain                      = 3,

    kIODPEventRemoteControlCommandPending       = 256,
    kIODPEventAutomatedTestRequest              = 257,
    kIODPEventContentProtection                 = 258,
    kIODPEventMCCS                              = 259,
    kIODPEventSinkSpecific                      = 260
};

#define kIODisplayAttributesKey         "IODisplayAttributes"

#define kIODisplaySupportsUnderscanKey  "IODisplaySupportsUnderscan"
#define kIODisplaySupportsBasicAudioKey "IODisplaySupportsBasicAudio"
#define kIODisplaySupportsYCbCr444Key   "IODisplaySupportsYCbCr444"
#define kIODisplaySupportsYCbCr422Key   "IODisplaySupportsYCbCr422"
#define kIODisplaySelectedColorModeKey  "cmod"

enum
{ 
    kIODisplayColorMode         = kConnectionColorMode,
};

#if 0
enum
{
    // kConnectionColorMode attribute
    kIODisplayColorModeReserved   = 0x00000000,
    kIODisplayColorModeRGB        = 0x00000001,
    kIODisplayColorModeYCbCr422   = 0x00000010,
    kIODisplayColorModeYCbCr444   = 0x00000100,
    kIODisplayColorModeRGBLimited = 0x00001000,
    kIODisplayColorModeAuto       = 0x10000000,
};
#endif

enum
{ 
    // kConnectionColorDepthsSupported attribute
    kIODisplayRGBColorComponentBitsUnknown       = 0x00000000,
    kIODisplayRGBColorComponentBits6             = 0x00000001,
    kIODisplayRGBColorComponentBits8             = 0x00000002,
    kIODisplayRGBColorComponentBits10            = 0x00000004,
    kIODisplayRGBColorComponentBits12            = 0x00000008,
    kIODisplayRGBColorComponentBits14            = 0x00000010,
    kIODisplayRGBColorComponentBits16            = 0x00000020,

    kIODisplayYCbCr444ColorComponentBitsUnknown  = 0x00000000,
    kIODisplayYCbCr444ColorComponentBits6        = 0x00000100,
    kIODisplayYCbCr444ColorComponentBits8        = 0x00000200,
    kIODisplayYCbCr444ColorComponentBits10       = 0x00000400,
    kIODisplayYCbCr444ColorComponentBits12       = 0x00000800,
    kIODisplayYCbCr444ColorComponentBits14       = 0x00001000,
    kIODisplayYCbCr444ColorComponentBits16       = 0x00002000,

    kIODisplayYCbCr422ColorComponentBitsUnknown  = 0x00000000,
    kIODisplayYCbCr422ColorComponentBits6        = 0x00010000,
    kIODisplayYCbCr422ColorComponentBits8        = 0x00020000,
    kIODisplayYCbCr422ColorComponentBits10       = 0x00040000,
    kIODisplayYCbCr422ColorComponentBits12       = 0x00080000,
    kIODisplayYCbCr422ColorComponentBits14       = 0x00100000,
    kIODisplayYCbCr422ColorComponentBits16       = 0x00200000,
};

enum
{ 
    // kConnectionDitherControl attribute
    kIODisplayDitherDisable          = 0x00000000,
    kIODisplayDitherSpatial          = 0x00000001,
    kIODisplayDitherTemporal         = 0x00000002,
    kIODisplayDitherFrameRateControl = 0x00000004,
    kIODisplayDitherDefault          = 0x00000080,
    kIODisplayDitherAll              = 0x000000FF,
    kIODisplayDitherRGBShift         = 0,
    kIODisplayDitherYCbCr444Shift    = 8,
    kIODisplayDitherYCbCr422Shift    = 16,
};

enum
{ 
    // kConnectionDisplayFlags attribute
    kIODisplayNeedsCEAUnderscan      = 0x00000001,
};

enum
{
	kIODisplayPowerStateOff       =	0,
	kIODisplayPowerStateMinUsable =	1,
	kIODisplayPowerStateOn        = 2,
};

#define IO_DISPLAY_CAN_FILL             0x00000040
#define IO_DISPLAY_CAN_BLIT             0x00000020

#define IO_24BPP_TRANSFER_TABLE_SIZE    256
#define IO_15BPP_TRANSFER_TABLE_SIZE    256
#define IO_8BPP_TRANSFER_TABLE_SIZE     256
#define IO_12BPP_TRANSFER_TABLE_SIZE    256
#define IO_2BPP_TRANSFER_TABLE_SIZE     256

#define STDFB_BM256_TO_BM38_MAP_SIZE    256
#define STDFB_BM38_TO_BM256_MAP_SIZE    256
#define STDFB_BM38_TO_256_WITH_LOGICAL_SIZE     \
        (STDFB_BM38_TO_BM256_MAP_SIZE + (256/sizeof(int)))

#define STDFB_4BPS_TO_5BPS_MAP_SIZE     16
#define STDFB_5BPS_TO_4BPS_MAP_SIZE     32

enum {
    // connection types for IOServiceOpen
    kIOFBServerConnectType              = 0,
    kIOFBSharedConnectType              = 1
};

enum {
    // options for IOServiceRequestProbe()
    kIOFBUserRequestProbe               = 0x00000001
};

struct IOGPoint {
    SInt16      x;
    SInt16      y;
};
typedef struct IOGPoint IOGPoint;

struct IOGSize {
    SInt16      width;
    SInt16      height;
};
typedef struct IOGSize IOGSize;

struct IOGBounds {
    SInt16      minx;
    SInt16      maxx;
    SInt16      miny;
    SInt16      maxy;
};
typedef struct IOGBounds IOGBounds;

#ifndef kIODescriptionKey

#if !defined(__Point__) && !defined(BINTREE_H) && !defined(__MACTYPES__)
#define __Point__
typedef IOGPoint Point;
#endif

#if !defined(__Bounds__) && !defined(BINTREE_H) && !defined(__MACTYPES__)
#define __Bounds__
typedef IOGBounds Bounds;
#endif

#endif /* !kIODescriptionKey */

// cursor description

enum {
   kTransparentEncoding         = 0,
   kInvertingEncoding
};

enum {
   kTransparentEncodingShift    = (kTransparentEncoding << 1),
   kTransparentEncodedPixel     = (0x01 << kTransparentEncodingShift),

   kInvertingEncodingShift      = (kInvertingEncoding << 1),
   kInvertingEncodedPixel       = (0x01 << kInvertingEncodingShift)
};

enum {
   kHardwareCursorDescriptorMajorVersion        = 0x0001,
   kHardwareCursorDescriptorMinorVersion        = 0x0000
};

/*!
 * @struct IOHardwareCursorDescriptor
 * @abstract A structure defining the format of a hardware cursor.
 * @discussion This structure is used by IOFramebuffer to define the format of a hardware cursor.
 * @field majorVersion Set to kHardwareCursorDescriptorMajorVersion.
 * @field minorVersion Set to kHardwareCursorDescriptorMinorVersion.
 * @field height Maximum size of the cursor.
 * @field width Maximum size of the cursor.
 * @field bitDepth Number bits per pixel, or a QD/QT pixel type, for example kIO8IndexedPixelFormat, kIO32ARGBPixelFormat.
 * @field maskBitDepth Unused.
 * @field numColors Number of colors for indexed pixel types.
 * @field colorEncodings An array pointer specifying the pixel values corresponding to the indices into the color table, for indexed pixel types.
 * @field flags None defined, set to zero.
 * @field supportedSpecialEncodings Mask of supported special pixel values, eg. kTransparentEncodedPixel, kInvertingEncodedPixel.
 * @field specialEncodings Array of pixel values for each supported special encoding.
 */

struct IOHardwareCursorDescriptor {
   UInt16               majorVersion;
   UInt16               minorVersion;
   UInt32               height;
   UInt32               width;
   UInt32               bitDepth;                       // bits per pixel, or a QD/QT pixel type
   UInt32               maskBitDepth;                   // unused
   UInt32               numColors;                      // number of colors in the colorMap. ie. 
   UInt32 *             colorEncodings;
   UInt32               flags;
   UInt32               supportedSpecialEncodings;
   UInt32               specialEncodings[16];
};
typedef struct IOHardwareCursorDescriptor IOHardwareCursorDescriptor;

enum {
   kHardwareCursorInfoMajorVersion              = 0x0001,
   kHardwareCursorInfoMinorVersion              = 0x0000
};

/*!
 * @struct IOHardwareCursorInfo
 * @abstract A structure defining the converted data of a hardware cursor.
 * @discussion This structure is used by IOFramebuffer to return the data of a hardware cursor by convertCursorImage() after conversion based on the IOHardwareCursorDescriptor passed to that routine.
 * @field majorVersion Set to kHardwareCursorInfoMajorVersion.
 * @field minorVersion Set to kHardwareCursorInfoMinorVersion.
 * @field cursorHeight The actual size of the cursor is returned.
 * @field cursorWidth The actual size of the cursor is returned.
 * @field colorMap Pointer to array of IOColorEntry structures, with the number of elements set by the numColors field of the IOHardwareCursorDescriptor. Zero should be passed for direct pixel formats.
 * @field hardwareCursorData Buffer to receive the converted cursor data.
 * @field cursorHotSpotX Cursor's hotspot.
 * @field cursorHotSpotY Cursor's hotspot.
 * @field reserved Reserved, set to zero.
 */

struct IOHardwareCursorInfo {
   UInt16               majorVersion;
   UInt16               minorVersion;
   UInt32               cursorHeight;
   UInt32               cursorWidth;
   // nil or big enough for hardware's max colors
   IOColorEntry *       colorMap;
   UInt8 *              hardwareCursorData;
   UInt16               cursorHotSpotX;
   UInt16               cursorHotSpotY;
   UInt32               reserved[5];
};
typedef struct IOHardwareCursorInfo IOHardwareCursorInfo;

// interrupt types

enum {
    kIOFBVBLInterruptType               = 'vbl ',
    kIOFBHBLInterruptType               = 'hbl ',
    kIOFBFrameInterruptType             = 'fram',
    // Demand to check configuration (Hardware unchanged)
    kIOFBConnectInterruptType           = 'dci ',
    // Demand to rebuild (Hardware has reinitialized on dependent change)
    kIOFBChangedInterruptType           = 'chng',
    // Demand to remove framebuffer (Hardware not available on dependent change -- but must not buserror)
    kIOFBOfflineInterruptType           = 'remv',
    // Notice that hardware is available (after being removed)
    kIOFBOnlineInterruptType            = 'add ',
    // DisplayPort short pulse
    kIOFBDisplayPortInterruptType           = 'dpir',
    // DisplayPort link event
    kIOFBDisplayPortLinkChangeInterruptType = 'dplk',
    // MCCS
    kIOFBMCCSInterruptType                  = 'mccs',
    // early vram notification
    kIOFBWakeInterruptType                  = 'vwak'
};

// IOAppleTimingID's
enum {
    kIOTimingIDInvalid               = 0,       /*  Not a standard timing */
    kIOTimingIDApple_FixedRateLCD    = 42,      /*  Lump all fixed-rate LCDs into one category.*/
    kIOTimingIDApple_512x384_60hz    = 130,     /*  512x384  (60 Hz) Rubik timing. */
    kIOTimingIDApple_560x384_60hz    = 135,     /*  560x384  (60 Hz) Rubik-560 timing. */
    kIOTimingIDApple_640x480_67hz    = 140,     /*  640x480  (67 Hz) HR timing. */
    kIOTimingIDApple_640x400_67hz    = 145,     /*  640x400  (67 Hz) HR-400 timing. */
    kIOTimingIDVESA_640x480_60hz     = 150,     /*  640x480  (60 Hz) VGA timing. */
    kIOTimingIDVESA_640x480_72hz     = 152,     /*  640x480  (72 Hz) VGA timing. */
    kIOTimingIDVESA_640x480_75hz     = 154,     /*  640x480  (75 Hz) VGA timing. */
    kIOTimingIDVESA_640x480_85hz     = 158,     /*  640x480  (85 Hz) VGA timing. */
    kIOTimingIDGTF_640x480_120hz     = 159,     /*  640x480  (120 Hz) VESA Generalized Timing Formula */
    kIOTimingIDApple_640x870_75hz    = 160,     /*  640x870  (75 Hz) FPD timing.*/
    kIOTimingIDApple_640x818_75hz    = 165,     /*  640x818  (75 Hz) FPD-818 timing.*/
    kIOTimingIDApple_832x624_75hz    = 170,     /*  832x624  (75 Hz) GoldFish timing.*/
    kIOTimingIDVESA_800x600_56hz     = 180,     /*  800x600  (56 Hz) SVGA timing. */
    kIOTimingIDVESA_800x600_60hz     = 182,     /*  800x600  (60 Hz) SVGA timing. */
    kIOTimingIDVESA_800x600_72hz     = 184,     /*  800x600  (72 Hz) SVGA timing. */
    kIOTimingIDVESA_800x600_75hz     = 186,     /*  800x600  (75 Hz) SVGA timing. */
    kIOTimingIDVESA_800x600_85hz     = 188,     /*  800x600  (85 Hz) SVGA timing. */
    kIOTimingIDVESA_1024x768_60hz    = 190,     /* 1024x768  (60 Hz) VESA 1K-60Hz timing. */
    kIOTimingIDVESA_1024x768_70hz    = 200,     /* 1024x768  (70 Hz) VESA 1K-70Hz timing. */
    kIOTimingIDVESA_1024x768_75hz    = 204,     /* 1024x768  (75 Hz) VESA 1K-75Hz timing (very similar to kIOTimingIDApple_1024x768_75hz). */
    kIOTimingIDVESA_1024x768_85hz    = 208,     /* 1024x768  (85 Hz) VESA timing. */
    kIOTimingIDApple_1024x768_75hz   = 210,     /* 1024x768  (75 Hz) Apple 19" RGB. */
    kIOTimingIDApple_1152x870_75hz   = 220,     /* 1152x870  (75 Hz) Apple 21" RGB. */
    kIOTimingIDAppleNTSC_ST          = 230,     /*  512x384  (60 Hz, interlaced, non-convolved). */
    kIOTimingIDAppleNTSC_FF          = 232,     /*  640x480  (60 Hz, interlaced, non-convolved). */
    kIOTimingIDAppleNTSC_STconv      = 234,     /*  512x384  (60 Hz, interlaced, convolved). */
    kIOTimingIDAppleNTSC_FFconv      = 236,     /*  640x480  (60 Hz, interlaced, convolved). */
    kIOTimingIDApplePAL_ST           = 238,     /*  640x480  (50 Hz, interlaced, non-convolved). */
    kIOTimingIDApplePAL_FF           = 240,     /*  768x576  (50 Hz, interlaced, non-convolved). */
    kIOTimingIDApplePAL_STconv       = 242,     /*  640x480  (50 Hz, interlaced, convolved). */
    kIOTimingIDApplePAL_FFconv       = 244,     /*  768x576  (50 Hz, interlaced, convolved). */
    kIOTimingIDVESA_1280x960_75hz    = 250,     /* 1280x960  (75 Hz) */
    kIOTimingIDVESA_1280x960_60hz    = 252,     /* 1280x960  (60 Hz) */
    kIOTimingIDVESA_1280x960_85hz    = 254,     /* 1280x960  (85 Hz) */
    kIOTimingIDVESA_1280x1024_60hz   = 260,     /* 1280x1024 (60 Hz) */
    kIOTimingIDVESA_1280x1024_75hz   = 262,     /* 1280x1024 (75 Hz) */
    kIOTimingIDVESA_1280x1024_85hz   = 268,     /* 1280x1024 (85 Hz) */
    kIOTimingIDVESA_1600x1200_60hz   = 280,     /* 1600x1200 (60 Hz) VESA timing. */
    kIOTimingIDVESA_1600x1200_65hz   = 282,     /* 1600x1200 (65 Hz) VESA timing. */
    kIOTimingIDVESA_1600x1200_70hz   = 284,     /* 1600x1200 (70 Hz) VESA timing. */
    kIOTimingIDVESA_1600x1200_75hz   = 286,     /* 1600x1200 (75 Hz) VESA timing (pixel clock is 189.2 Mhz dot clock). */
    kIOTimingIDVESA_1600x1200_80hz   = 288,     /* 1600x1200 (80 Hz) VESA timing (pixel clock is 216>? Mhz dot clock) - proposed only. */
    kIOTimingIDVESA_1600x1200_85hz   = 289,     /* 1600x1200 (85 Hz) VESA timing (pixel clock is 229.5 Mhz dot clock). */
    kIOTimingIDVESA_1792x1344_60hz   = 296,     /* 1792x1344 (60 Hz) VESA timing (204.75 Mhz dot clock). */
    kIOTimingIDVESA_1792x1344_75hz   = 298,     /* 1792x1344 (75 Hz) VESA timing (261.75 Mhz dot clock). */
    kIOTimingIDVESA_1856x1392_60hz   = 300,     /* 1856x1392 (60 Hz) VESA timing (218.25 Mhz dot clock). */
    kIOTimingIDVESA_1856x1392_75hz   = 302,     /* 1856x1392 (75 Hz) VESA timing (288 Mhz dot clock). */
    kIOTimingIDVESA_1920x1440_60hz   = 304,     /* 1920x1440 (60 Hz) VESA timing (234 Mhz dot clock). */
    kIOTimingIDVESA_1920x1440_75hz   = 306,     /* 1920x1440 (75 Hz) VESA timing (297 Mhz dot clock). */
    kIOTimingIDSMPTE240M_60hz        = 400,     /* 60Hz V, 33.75KHz H, interlaced timing, 16:9 aspect, typical resolution of 1920x1035. */
    kIOTimingIDFilmRate_48hz         = 410,     /* 48Hz V, 25.20KHz H, non-interlaced timing, typical resolution of 640x480. */
    kIOTimingIDSony_1600x1024_76hz   = 500,     /* 1600x1024 (76 Hz) Sony timing (pixel clock is 170.447 Mhz dot clock). */
    kIOTimingIDSony_1920x1080_60hz   = 510,     /* 1920x1080 (60 Hz) Sony timing (pixel clock is 159.84 Mhz dot clock). */
    kIOTimingIDSony_1920x1080_72hz   = 520,     /* 1920x1080 (72 Hz) Sony timing (pixel clock is 216.023 Mhz dot clock). */
    kIOTimingIDSony_1920x1200_76hz   = 540,     /* 1900x1200 (76 Hz) Sony timing (pixel clock is 243.20 Mhz dot clock). */
    kIOTimingIDApple_0x0_0hz_Offline = 550,     /* Indicates that this timing will take the display off-line and remove it from the system. */
    kIOTimingIDVESA_848x480_60hz     = 570,     /*  848x480 (60 Hz)  VESA timing. */
    kIOTimingIDVESA_1360x768_60hz    = 590      /* 1360x768 (60 Hz)  VESA timing. */
};

// framebuffer property keys

#define kIOFramebufferInfoKey           "IOFramebufferInformation"

#define kIOFBWidthKey                   "IOFBWidth"
#define kIOFBHeightKey                  "IOFBHeight"
#define kIOFBRefreshRateKey             "IOFBRefreshRate"
#define kIOFBFlagsKey                   "IOFBFlags"
#define kIOFBBytesPerRowKey             "IOFBBytesPerRow"
#define kIOFBBytesPerPlaneKey           "IOFBBytesPerPlane"
#define kIOFBBitsPerPixelKey            "IOFBBitsPerPixel"
#define kIOFBComponentCountKey          "IOFBComponentCount"
#define kIOFBBitsPerComponentKey        "IOFBBitsPerComponent"

#define kIOFBDetailedTimingsKey         "IOFBDetailedTimings"
#define kIOFBTimingRangeKey             "IOFBTimingRange"
#define kIOFBScalerInfoKey              "IOFBScalerInfo"
#define kIOFBCursorInfoKey              "IOFBCursorInfo"

#define kIOFBHostAccessFlagsKey         "IOFBHostAccessFlags"

#define kIOFBMemorySizeKey              "IOFBMemorySize"

#define kIOFBNeedsRefreshKey            "IOFBNeedsRefresh"

#define kIOFBProbeOptionsKey            "IOFBProbeOptions"

#define kIOFBGammaWidthKey              "IOFBGammaWidth"
#define kIOFBGammaCountKey              "IOFBGammaCount"
#define kIOFBCLUTDeferKey               "IOFBCLUTDefer"
        
// exists on the hibernate progress display device
#ifndef kIOHibernatePreviewActiveKey
#define kIOHibernatePreviewActiveKey    "IOHibernatePreviewActive"
// values for kIOHibernatePreviewActiveKey set by driver
enum {
    kIOHibernatePreviewActive  = 0x00000001,
    kIOHibernatePreviewUpdates = 0x00000002
};
#endif

#define kIOHibernateEFIGfxStatusKey    "IOHibernateEFIGfxStatus"

// CFNumber/CFData
#define kIOFBAVSignalTypeKey            "av-signal-type"
enum {
    kIOFBAVSignalTypeUnknown = 0x00000000,
    kIOFBAVSignalTypeVGA     = 0x00000001,
    kIOFBAVSignalTypeDVI     = 0x00000002,
    kIOFBAVSignalTypeHDMI    = 0x00000008,
    kIOFBAVSignalTypeDP      = 0x00000010,
};

// kIOFBDisplayPortTrainingAttribute data

struct IOFBDPLinkConfig
{
    uint16_t version;		 // 8 bit high (major); 8 bit low (minor)
    uint8_t  bitRate;		 // same encoding as the spec
    uint8_t  __reservedA[1]; // reserved set to zero
	uint16_t t1Time;		 // minimum duration of the t1 pattern (microseconds)
	uint16_t t2Time;		 // minimum duration of the t2 pattern
	uint16_t t3Time;		 // minimum duration of the t3 pattern
	uint8_t  idlePatterns;   // minimum number of idle patterns
	uint8_t  laneCount;		 // number of lanes in the link
	uint8_t  voltage;
	uint8_t  preEmphasis;
	uint8_t  downspread;
	uint8_t  scrambler;
	uint8_t  maxBitRate;	 // same encoding as the bitRate field
	uint8_t  maxLaneCount;	 // an integer
	uint8_t  maxDownspread;	 // 0 = Off. 1 = 0.5
	uint8_t  __reservedB[9];	// reserved set to zero - fix align and provide 8 bytes of padding.
};
typedef struct IOFBDPLinkConfig IOFBDPLinkConfig;

enum
{
    kIOFBBitRateRBR		= 0x06,		// 1.62 Gbps per lane
    kIOFBBitRateHBR		= 0x0A,		// 2.70 Gbps per lane
    kIOFBBitRateHBR2	= 0x14,		// 5.40 Gbps per lane
};

enum {
    kIOFBLinkVoltageLevel0	= 0x00,
    kIOFBLinkVoltageLevel1	= 0x01,
    kIOFBLinkVoltageLevel2	= 0x02,
    kIOFBLinkVoltageLevel3	= 0x03
};

enum
{
    kIOFBLinkPreEmphasisLevel0 = 0x00,
    kIOFBLinkPreEmphasisLevel1 = 0x01,
    kIOFBLinkPreEmphasisLevel2 = 0x02,
    kIOFBLinkPreEmphasisLevel3 = 0x03
};

enum
{
    kIOFBLinkDownspreadNone  = 0x0,
    kIOFBLinkDownspreadMax   = 0x1
};

enum
{
    kIOFBLinkScramblerNormal    = 0x0, // for external displays
    kIOFBLinkScramblerAlternate = 0x1  // used for eDP
};

// diagnostic keys

#define kIOFBConfigKey                  "IOFBConfig"
#define kIOFBModesKey                   "IOFBModes"
#define kIOFBModeIDKey                  "ID"
#define kIOFBModeDMKey                  "DM"
#define kIOFBModeTMKey                  "TM"
#define kIOFBModeAIDKey                 "AID"
#define kIOFBModeDFKey                  "DF"
#define kIOFBModePIKey                  "PI"

// display property keys

#define kIODisplayEDIDKey               "IODisplayEDID"
#define kIODisplayLocationKey           "IODisplayLocation"             // CFString
#define kIODisplayConnectFlagsKey       "IODisplayConnectFlags"         // CFNumber
#define kIODisplayHasBacklightKey       "IODisplayHasBacklight"         // CFBoolean
#define kIODisplayIsDigitalKey          "IODisplayIsDigital"            // CFBoolean
#define kDisplayBundleKey               "DisplayBundle"

#define kAppleDisplayTypeKey            "AppleDisplayType"
#define kAppleSenseKey                  "AppleSense"

#define kIODisplayMCCSVersionKey                "IODisplayMCCSVersion"
#define kIODisplayTechnologyTypeKey             "IODisplayTechnologyType"
#define kIODisplayUsageTimeKey                  "IODisplayUsageTime"
#define kIODisplayFirmwareLevelKey              "IODisplayFirmwareLevel"

enum {
    kDisplayVendorIDUnknown     = 'unkn',
    kDisplayProductIDGeneric    = 0x717
};

#define kDisplayVendorID                "DisplayVendorID"        // CFNumber
#define kDisplayProductID               "DisplayProductID"       // CFNumber
#define kDisplaySerialNumber            "DisplaySerialNumber"    // CFNumber
#define kDisplaySerialString            "DisplaySerialString"    // CFString
#define kDisplayWeekOfManufacture       "DisplayWeekManufacture" // CFNumber
#define kDisplayYearOfManufacture       "DisplayYearManufacture" // CFNumber

// CFDictionary of language-locale keys, name values
// eg. "en"="Color LCD", "en-GB"="Colour LCD"
#define kDisplayProductName             "DisplayProductName"

// all CFNumber or CFArray of CFNumber (floats)
#define kDisplayWhitePointX             "DisplayWhitePointX"
#define kDisplayWhitePointY             "DisplayWhitePointY"
#define kDisplayRedPointX               "DisplayRedPointX"
#define kDisplayRedPointY               "DisplayRedPointY"
#define kDisplayGreenPointX             "DisplayGreenPointX"
#define kDisplayGreenPointY             "DisplayGreenPointY"
#define kDisplayBluePointX              "DisplayBluePointX"
#define kDisplayBluePointY              "DisplayBluePointY"
#define kDisplayWhiteGamma              "DisplayWhiteGamma"
#define kDisplayRedGamma                "DisplayRedGamma"
#define kDisplayGreenGamma              "DisplayGreenGamma"
#define kDisplayBlueGamma               "DisplayBlueGamma"

// Display gamma
#define kDisplayGammaChannels           "DisplayGammaChannels"    // CFNumber 1 or 3 channel count
#define kDisplayGammaEntryCount         "DisplayGammaEntryCount"  // CFNumber 1-based count of entries per channel
#define kDisplayGammaEntrySize          "DisplayGammaEntrySize"   // CFNumber size in bytes of each table entry
#define kDisplayGammaTable              "DisplayGammaTable"       // CFData

// CFBoolean
#define kDisplayBrightnessAffectsGamma  "DisplayBrightnessAffectsGamma"
#define kDisplayViewAngleAffectsGamma   "DisplayViewAngleAffectsGamma"

// CFData
#define kDisplayCSProfile               "DisplayCSProfile"

// CFNumber
#define kDisplayHorizontalImageSize     "DisplayHorizontalImageSize"
#define kDisplayVerticalImageSize       "DisplayVerticalImageSize"

// Pixel description

// CFBoolean
#define kDisplayFixedPixelFormat        "DisplayFixedPixelFormat"

enum {
    kDisplaySubPixelLayoutUndefined     = 0x00000000,
    kDisplaySubPixelLayoutRGB           = 0x00000001,
    kDisplaySubPixelLayoutBGR           = 0x00000002,
    kDisplaySubPixelLayoutQuadGBL       = 0x00000003,
    kDisplaySubPixelLayoutQuadGBR       = 0x00000004,

    kDisplaySubPixelConfigurationUndefined    = 0x00000000,
    kDisplaySubPixelConfigurationDelta        = 0x00000001,
    kDisplaySubPixelConfigurationStripe       = 0x00000002,
    kDisplaySubPixelConfigurationStripeOffset = 0x00000003,
    kDisplaySubPixelConfigurationQuad         = 0x00000004,

    kDisplaySubPixelShapeUndefined      = 0x00000000,
    kDisplaySubPixelShapeRound          = 0x00000001,
    kDisplaySubPixelShapeSquare         = 0x00000002,
    kDisplaySubPixelShapeRectangular    = 0x00000003,
    kDisplaySubPixelShapeOval           = 0x00000004,
    kDisplaySubPixelShapeElliptical     = 0x00000005
};

// CFNumbers
#define kDisplaySubPixelLayout          "DisplaySubPixelLayout"
#define kDisplaySubPixelConfiguration   "DisplaySubPixelConfiguration"
#define kDisplaySubPixelShape           "DisplaySubPixelShape"

#define kIODisplayOverrideMatchingKey   "IODisplayOverrideMatching"

// Display parameters

#define kIODisplayParametersKey         "IODisplayParameters"
#define kIODisplayGUIDKey               "IODisplayGUID"

#define kIODisplayValueKey              "value"
#define kIODisplayMinValueKey           "min"
#define kIODisplayMaxValueKey           "max"

#define kIODisplayBrightnessKey             "brightness"
#define kIODisplayLinearBrightnessKey       "linear-brightness"
#define kIODisplayUsableLinearBrightnessKey "usable-linear-brightness"
#define kIODisplayContrastKey               "contrast"
#define kIODisplayHorizontalPositionKey     "horizontal-position"
#define kIODisplayHorizontalSizeKey     	"horizontal-size"
#define kIODisplayVerticalPositionKey   	"vertical-position"
#define kIODisplayVerticalSizeKey           "vertical-size"
#define kIODisplayTrapezoidKey              "trapezoid"
#define kIODisplayPincushionKey             "pincushion"
#define kIODisplayParallelogramKey          "parallelogram"
#define kIODisplayRotationKey               "rotation"
#define kIODisplayTheatreModeKey            "theatre-mode"
#define kIODisplayTheatreModeWindowKey      "theatre-mode-window"
#define kIODisplayOverscanKey               "oscn"
#define kIODisplayVideoBestKey              "vbst"

#define kIODisplaySpeakerVolumeKey              "speaker-volume"
#define kIODisplaySpeakerSelectKey              "speaker-select"
#define kIODisplayMicrophoneVolumeKey           "microphone-volume"
#define kIODisplayAmbientLightSensorKey         "ambient-light-sensor"
#define kIODisplayAudioMuteAndScreenBlankKey    "audio-mute-and-screen-blank"
#define kIODisplayAudioTrebleKey                "audio-treble"
#define kIODisplayAudioBassKey                  "audio-bass"
#define kIODisplayAudioBalanceLRKey             "audio-balance-LR"
#define kIODisplayAudioProcessorModeKey         "audio-processor-mode"
#define kIODisplayPowerModeKey                  "power-mode"
#define kIODisplayManufacturerSpecificKey       "manufacturer-specific"

#define kIODisplayPowerStateKey       			"dsyp"

#define kIODisplayControllerIDKey				"IODisplayControllerID"
#define kIODisplayCapabilityStringKey       	"IODisplayCapabilityString"

#define kIODisplayRedGammaScaleKey      "rgsc"
#define kIODisplayGreenGammaScaleKey    "ggsc"
#define kIODisplayBlueGammaScaleKey     "bgsc"

#define kIODisplayParametersCommitKey   "commit"
#define kIODisplayParametersDefaultKey  "defaults"
#define kIODisplayParametersFlushKey    "flush"

#ifdef __cplusplus
}
#endif

#endif /* ! _IOKIT_IOGRAPHICSTYPES_H */