Rev 54 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 54 | pj | 1 | |
| 2 | #ifndef TIMING_H |
||
| 3 | #define TIMING_H |
||
| 4 | |||
| 80 | pj | 5 | #include "ll/sys/cdefs.h" |
| 6 | |||
| 7 | __BEGIN_DECLS |
||
| 8 | |||
| 54 | pj | 9 | /* |
| 10 | * Generic mode timing module. |
||
| 11 | */ |
||
| 12 | |||
| 13 | /* This is the type of a basic (monitor-oriented) mode timing. */ |
||
| 14 | typedef struct _MMT_S MonitorModeTiming; |
||
| 15 | struct _MMT_S { |
||
| 16 | int pixelClock; /* Pixel clock in kHz. */ |
||
| 17 | int HDisplay; /* Horizontal Timing. */ |
||
| 18 | int HSyncStart; |
||
| 19 | int HSyncEnd; |
||
| 20 | int HTotal; |
||
| 21 | int VDisplay; /* Vertical Timing. */ |
||
| 22 | int VSyncStart; |
||
| 23 | int VSyncEnd; |
||
| 24 | int VTotal; |
||
| 25 | int flags; |
||
| 26 | MonitorModeTiming *next; |
||
| 27 | }; |
||
| 28 | |||
| 29 | /* This is for the hardware (card)-adjusted mode timing. */ |
||
| 30 | typedef struct { |
||
| 31 | int pixelClock; /* Pixel clock in kHz. */ |
||
| 32 | int HDisplay; /* Horizontal Timing. */ |
||
| 33 | int HSyncStart; |
||
| 34 | int HSyncEnd; |
||
| 35 | int HTotal; |
||
| 36 | int VDisplay; /* Vertical Timing. */ |
||
| 37 | int VSyncStart; |
||
| 38 | int VSyncEnd; |
||
| 39 | int VTotal; |
||
| 40 | int flags; |
||
| 41 | /* The following field are optionally filled in according to card */ |
||
| 42 | /* specific parameters. */ |
||
| 43 | int programmedClock; /* Actual clock to be programmed. */ |
||
| 44 | int selectedClockNo; /* Index number of fixed clock used. */ |
||
| 45 | int CrtcHDisplay; /* Actual programmed horizontal CRTC timing. */ |
||
| 46 | int CrtcHSyncStart; |
||
| 47 | int CrtcHSyncEnd; |
||
| 48 | int CrtcHTotal; |
||
| 49 | int CrtcVDisplay; /* Actual programmed vertical CRTC timing. */ |
||
| 50 | int CrtcVSyncStart; |
||
| 51 | int CrtcVSyncEnd; |
||
| 52 | int CrtcVTotal; |
||
| 53 | } ModeTiming; |
||
| 54 | |||
| 55 | /* Flags in ModeTiming. */ |
||
| 56 | #define PHSYNC 0x1 /* Positive hsync polarity. */ |
||
| 57 | #define NHSYNC 0x2 /* Negative hsync polarity. */ |
||
| 58 | #define PVSYNC 0x4 /* Positive vsync polarity. */ |
||
| 59 | #define NVSYNC 0x8 /* Negative vsync polarity. */ |
||
| 60 | #define INTERLACED 0x10 /* Mode has interlaced timing. */ |
||
| 61 | #define DOUBLESCAN 0x20 /* Mode uses VGA doublescan (see note). */ |
||
| 62 | #define HADJUSTED 0x40 /* Horizontal CRTC timing adjusted. */ |
||
| 63 | #define VADJUSTED 0x80 /* Vertical CRTC timing adjusted. */ |
||
| 64 | #define USEPROGRCLOCK 0x100 /* A programmable clock is used. */ |
||
| 65 | #define TVMODE 0x200 |
||
| 66 | #define TVPAL 0x400 |
||
| 67 | #define TVNTSC 0x800 |
||
| 68 | |||
| 69 | /* |
||
| 70 | * Note: Double scan implies that each scanline is displayed twice. The |
||
| 71 | * vertical CRTC timings are programmed to double the effective vertical |
||
| 72 | * resolution (the CRT still displays 400 scanlines for a 200 line |
||
| 73 | * resolution). |
||
| 74 | */ |
||
| 75 | |||
| 76 | /* Cards specifications. */ |
||
| 77 | typedef struct { |
||
| 78 | int videoMemory; /* Video memory in kilobytes. */ |
||
| 79 | int maxPixelClock4bpp; /* Maximum pixel clocks in kHz for each depth. */ |
||
| 80 | int maxPixelClock8bpp; |
||
| 81 | int maxPixelClock16bpp; |
||
| 82 | int maxPixelClock24bpp; |
||
| 83 | int maxPixelClock32bpp; |
||
| 84 | int flags; /* Flags (e.g. programmable clocks). */ |
||
| 85 | int nClocks; /* Number of fixed clocks. */ |
||
| 86 | int *clocks; /* Pointer to array of fixed clock values. */ |
||
| 87 | int maxHorizontalCrtc; |
||
| 88 | /* |
||
| 89 | * The following function maps from a pixel clock and depth to |
||
| 90 | * the raw clock frequency required. |
||
| 91 | */ |
||
| 92 | int (*mapClock) (int bpp, int pixelclock); |
||
| 93 | /* |
||
| 94 | * The following function maps from a requested clock value |
||
| 95 | * to the closest clock that the programmable clock device |
||
| 96 | * can produce. |
||
| 97 | */ |
||
| 98 | int (*matchProgrammableClock) (int desiredclock); |
||
| 99 | /* |
||
| 100 | * The following function maps from a pixel clock, depth and |
||
| 101 | * horizontal CRTC timing parameter to the horizontal timing |
||
| 102 | * that has to be programmed. |
||
| 103 | */ |
||
| 104 | int (*mapHorizontalCrtc) (int bpp, int pixelclock, int htiming); |
||
| 105 | } CardSpecs; |
||
| 106 | |||
| 107 | /* Card flags. */ |
||
| 108 | /* The card has programmable clocks (matchProgrammableClock is valid). */ |
||
| 109 | #define CLOCK_PROGRAMMABLE 0x1 |
||
| 110 | /* For interlaced modes, the vertical timing must be divided by two. */ |
||
| 111 | #define INTERLACE_DIVIDE_VERT 0x2 |
||
| 112 | /* For modes with vertical timing greater or equal to 1024, vertical */ |
||
| 113 | /* timing must be divided by two. */ |
||
| 114 | #define GREATER_1024_DIVIDE_VERT 0x4 |
||
| 115 | /* The DAC doesn't support 64K colors (5-6-5) at 16bpp, just 5-5-5. */ |
||
| 116 | #define NO_RGB16_565 0x8 |
||
| 117 | /* Card (or driver) can't do interlaced modes */ |
||
| 118 | #define NO_INTERLACE 0x10 |
||
| 119 | /* Don't have banked memory - emulated with mmap from linear memory */ |
||
| 120 | #define EMULATE_BANK 0x20 |
||
| 121 | |||
| 122 | /* Mode info. */ |
||
| 123 | typedef struct { |
||
| 124 | /* Basic properties. */ |
||
| 125 | short width; /* Width of the screen in pixels. */ |
||
| 126 | short height; /* Height of the screen in pixels. */ |
||
| 127 | char bytesPerPixel; /* Number of bytes per pixel. */ |
||
| 128 | char bitsPerPixel; /* Number of bits per pixel. */ |
||
| 129 | char colorBits; /* Number of significant bits in pixel. */ |
||
| 130 | char __padding1; |
||
| 131 | /* Truecolor pixel specification. */ |
||
| 132 | char redWeight; /* Number of significant red bits. */ |
||
| 133 | char greenWeight; /* Number of significant green bits. */ |
||
| 134 | char blueWeight; /* Number of significant blue bits. */ |
||
| 135 | char __padding2; |
||
| 136 | char redOffset; /* Offset in bits of red value into pixel. */ |
||
| 137 | char blueOffset; /* Offset of green value. */ |
||
| 138 | char greenOffset; /* Offset of blue value. */ |
||
| 139 | char __padding3; |
||
| 140 | unsigned redMask; /* Pixel mask of read value. */ |
||
| 141 | unsigned blueMask; /* Pixel mask of green value. */ |
||
| 142 | unsigned greenMask; /* Pixel mask of blue value. */ |
||
| 143 | /* Structural properties of the mode. */ |
||
| 144 | int lineWidth; /* Offset in bytes between scanlines. */ |
||
| 145 | short realWidth; /* Real on-screen resolution. */ |
||
| 146 | short realHeight; /* Real on-screen resolution. */ |
||
| 147 | int flags; |
||
| 148 | } ModeInfo; |
||
| 149 | |||
| 150 | |||
| 151 | /* Prototypes of functions defined in timing.c. */ |
||
| 152 | |||
| 153 | /* |
||
| 154 | * This function will look up mode timings for a mode matching ModeInfo |
||
| 155 | * that is within monitor spec and matches the capabilities (clocks etc.) |
||
| 156 | * of the card. |
||
| 157 | */ |
||
| 158 | |||
| 159 | int __svgalib_getmodetiming( |
||
| 160 | ModeTiming *, /* Resulting mode timing. */ |
||
| 161 | ModeInfo *, /* Structural mode info. */ |
||
| 162 | CardSpecs * /* Card specs (dot clocks etc.). */ |
||
| 163 | ); |
||
| 164 | |||
| 165 | void __svgalib_addusertiming( |
||
| 166 | MonitorModeTiming * |
||
| 167 | ); |
||
| 168 | |||
| 169 | /* GTF constants */ |
||
| 170 | #define GTF_lockVF 1 /* Lock to vertical frequency */ |
||
| 171 | #define GTF_lockHF 2 /* Lock to horizontal frequency */ |
||
| 172 | #define GTF_lockPF 3 /* Lock to pixel clock frequency*/ |
||
| 173 | |||
| 80 | pj | 174 | __END_DECLS |
| 175 | |||
| 54 | pj | 176 | #endif |