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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 54 | pj | 1 | /* |
| 2 | * ramdac.h: |
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| 3 | * |
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| 4 | * Structures and functions for programmable ramdac support. |
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| 5 | */ |
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| 6 | |||
| 7 | /* DacMethods type. */ |
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| 8 | |||
| 9 | typedef struct { |
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| 10 | int id; |
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| 11 | char *name; |
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| 12 | int flags; |
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| 13 | /* |
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| 14 | * The following function tries to detect the DAC; |
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| 15 | * returns nonzero if succesful. |
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| 16 | */ |
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| 17 | int (*probe) (void); |
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| 18 | /* |
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| 19 | * The following function initializes the DAC; it is usually |
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| 20 | * called once after detection. |
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| 21 | */ |
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| 22 | void (*initialize) (void); |
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| 23 | /* |
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| 24 | * The following function fills in dot clock limits, and |
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| 25 | * mapping functions for the raw clock and horizontal |
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| 26 | * CRTC timing, in the cardspecs structure. |
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| 27 | * |
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| 28 | * dacspeed is the max pixel clock in kHz the dac can handle, |
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| 29 | * or 0 for default. |
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| 30 | */ |
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| 31 | void (*qualifyCardSpecs) (CardSpecs * cardspecs, int dacspeed); |
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| 32 | /* |
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| 33 | * The following function saves RAMDAC registers into regs. |
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| 34 | */ |
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| 35 | void (*saveState) (unsigned char *regs); |
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| 36 | /* |
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| 37 | * The following function sets the RAMDAC registers with the |
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| 38 | * values from regs. |
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| 39 | */ |
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| 40 | void (*restoreState) (const unsigned char *regs); |
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| 41 | /* |
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| 42 | * The following function sets up the RAMDAC register values |
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| 43 | * for the desired color operating mode. If the DAC has |
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| 44 | * programmable clocks, it should also program the clock. |
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| 45 | */ |
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| 46 | void (*initializeState) (unsigned char *regs, int bpp, int colormode, |
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| 47 | int pixelclock); |
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| 48 | int stateSize; /* Size in bytes of the state (saved registers). */ |
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| 49 | } DacMethods; |
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| 50 | |||
| 51 | /* IDs */ |
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| 52 | |||
| 53 | #define NORMAL_DAC 1 |
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| 54 | #define S3_GENDAC 2 /* S3-GenDAC (8-bit DAC). */ |
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| 55 | #define S3_SDAC 3 /* S3-SDAC (16-bit DAC). */ |
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| 56 | #define TRIO64 4 /* Trio64 internal DAC. */ |
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| 57 | #define SIERRA_32K 5 /* Basic DAC with 32K color mode support. */ |
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| 58 | #define ATT20C490 6 /* Standard AT&T 8-bit DAC with truecolor. */ |
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| 59 | #define ATT20C498 7 /* Standard AT&T 16-bit DAC. */ |
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| 60 | #define IC_WORKS 8 /* IC Works DAC (16-bit ZoomDac). */ |
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| 61 | #define SIERRA_15025 9 /* Sierra SC15025/26 DAC. */ |
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| 62 | #define IBMRGB52x 10 /* IBM RGB52x Palette DAC. */ |
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| 63 | #define SIERRA_1148X 11 /* Sierra SC1148x DAC. */ |
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| 64 | |||
| 65 | /* Flags. */ |
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| 66 | |||
| 67 | #define DAC_HAS_PROGRAMMABLE_CLOCKS 0x1 |
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| 68 | |||
| 69 | /* Color modes. */ |
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| 70 | |||
| 71 | #define CLUT8_6 0 |
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| 72 | #define CLUT8_8 1 |
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| 73 | #define RGB16_555 2 |
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| 74 | #define RGB16_565 3 |
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| 75 | #define RGB24_888_B 4 /* 3 bytes per pixel, blue byte first. */ |
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| 76 | #define RGB32_888_B 5 /* 4 bytes per pixel. */ |
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| 77 | |||
| 78 | /* State size */ |
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| 79 | #define MAX_DAC_STATE 0x101 /* IBMRGB has this many */ |
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| 80 | |||
| 81 | /* RAMDAC methods */ |
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| 82 | |||
| 83 | #ifdef INCLUDE_NORMAL_DAC |
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| 84 | extern DacMethods __svgalib_normal_dac_methods; |
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| 85 | #endif |
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| 86 | #ifdef INCLUDE_S3_SDAC_DAC |
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| 87 | extern DacMethods __svgalib_S3_SDAC_methods; |
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| 88 | #endif |
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| 89 | #ifdef INCLUDE_S3_GENDAC_DAC |
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| 90 | extern DacMethods __svgalib_S3_GENDAC_methods; |
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| 91 | #endif |
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| 92 | #ifdef INCLUDE_S3_TRIO64_DAC |
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| 93 | extern DacMethods __svgalib_Trio64_methods; |
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| 94 | #endif |
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| 95 | #ifdef INCLUDE_SIERRA_DAC |
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| 96 | extern DacMethods __svgalib_Sierra_32K_methods; |
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| 97 | #endif |
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| 98 | #ifdef INCLUDE_SC15025_DAC |
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| 99 | extern DacMethods __svgalib_SC15025_methods; |
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| 100 | #endif |
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| 101 | #ifdef INCLUDE_ATT20C490_DAC |
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| 102 | extern DacMethods __svgalib_ATT20C490_methods; |
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| 103 | #endif |
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| 104 | #ifdef INCLUDE_ATT20C498_DAC |
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| 105 | extern DacMethods __svgalib_ATT20C498_methods; |
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| 106 | #endif |
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| 107 | #ifdef INCLUDE_ICW_DAC |
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| 108 | extern DacMethods __svgalib_ICW_methods; |
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| 109 | #endif |
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| 110 | #ifdef INCLUDE_IBMRGB52x_DAC |
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| 111 | extern DacMethods __svgalib_IBMRGB52x_methods; |
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| 112 | #endif |
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| 113 | #ifdef INCLUDE_SC1148X_DAC |
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| 114 | extern DacMethods __svgalib_SC1148X_methods; |
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| 115 | #endif |
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| 116 | #ifdef INCLUDE_ICS_GENDAC_DAC |
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| 117 | extern DacMethods __svgalib_ICS_GENDAC_methods; |
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| 118 | #endif |
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| 119 | |||
| 120 | extern DacMethods *__svgalib_all_dacs[]; /* List of all defined DACs. */ |
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| 121 | |||
| 122 | /* Functions defined in ramdac.c. */ |
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| 123 | |||
| 124 | /* |
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| 125 | * The following function probes the DACs in daclist, which must be |
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| 126 | * terminated by NULL. It returns the detected DAC if succesful, NULL |
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| 127 | * otherwise. The detected DAC is also initialized. |
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| 128 | */ |
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| 129 | |||
| 130 | DacMethods *__svgalib_probeDacs(DacMethods ** daclist); |
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| 131 | |||
| 132 | /* |
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| 133 | * Internal functions (not meant for export, but no such mechanism in C) |
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| 134 | */ |
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| 135 | int __svgalib_setDacSpeed(int dacspeed, int defspeed); |
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| 136 | |||
| 137 | void __svgalib_Sierra_32K_savestate(unsigned char *regs); |
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| 138 | void __svgalib_Sierra_32K_restorestate(const unsigned char *regs); |
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| 139 | |||
| 140 | #ifdef __OPTIMIZE__ |
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| 141 | static __inline__ void _ramdac_dactocomm(void) |
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| 142 | { |
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| 143 | inb(PEL_IW); |
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| 144 | inb(PEL_MSK); |
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| 145 | inb(PEL_MSK); |
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| 146 | inb(PEL_MSK); |
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| 147 | inb(PEL_MSK); |
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| 148 | } |
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| 149 | |||
| 150 | static __inline__ void _ramdac_dactopel(void) |
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| 151 | { |
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| 152 | inb(PEL_IW); |
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| 153 | } |
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| 154 | |||
| 155 | static __inline__ unsigned char _ramdac_setcomm(unsigned char data) |
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| 156 | { |
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| 157 | _ramdac_dactocomm(); |
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| 158 | outb(PEL_MSK, data); |
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| 159 | _ramdac_dactocomm(); |
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| 160 | return inb(PEL_MSK); |
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| 161 | } |
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| 162 | #else |
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| 163 | void _ramdac_dactocomm(void); |
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| 164 | void _ramdac_dactopel(void); |
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| 165 | unsigned char _ramdac_setcomm(unsigned char data); |
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| 166 | #endif |