src/add-ons/accelerants/et6x00/ProposeDisplayMode.c

   1 /*****************************************************************************\
   2  * Tseng Labs ET6000, ET6100 and ET6300 graphics driver for BeOS 5.
   3  * Copyright (c) 2003-2004, Evgeniy Vladimirovich Bobkov.
   4 \*****************************************************************************/
   5
   6 #include "GlobalData.h"
   7 #include "generic.h"
   8 #include <string.h>
   9 #include <sys/ioctl.h>
  10
  11
  12 /*****************************************************************************/
  13 #define T_POSITIVE_SYNC (B_POSITIVE_HSYNC | B_POSITIVE_VSYNC)
  14 #define MODE_FLAGS      (B_SCROLL | B_8_BIT_DAC | B_PARALLEL_ACCESS)
  15 #define MODE_COUNT (sizeof (modesList) / sizeof (display_mode))
  16 /*****************************************************************************/
  17 static const display_mode modesList[] = {
  18 { { 25175, 640, 656, 752, 800, 480, 490, 492, 525, 0}, B_RGB24, 640, 480, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(640X480X8.Z1) */
  19 { { 27500, 640, 672, 768, 864, 480, 488, 494, 530, 0}, B_RGB24, 640, 480, 0, 0, MODE_FLAGS}, /* 640X480X60Hz */
  20 { { 30500, 640, 672, 768, 864, 480, 517, 523, 588, 0}, B_RGB24, 640, 480, 0, 0, MODE_FLAGS}, /* SVGA_640X480X60HzNI */
  21 { { 31500, 640, 664, 704, 832, 480, 489, 492, 520, 0}, B_RGB24, 640, 480, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@70-72Hz_(640X480X8.Z1) */
  22 { { 31500, 640, 656, 720, 840, 480, 481, 484, 500, 0}, B_RGB24, 640, 480, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(640X480X8.Z1) */
  23 { { 36000, 640, 696, 752, 832, 480, 481, 484, 509, 0}, B_RGB24, 640, 480, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@85Hz_(640X480X8.Z1) */
  24 { { 38100, 800, 832, 960, 1088, 600, 602, 606, 620, 0}, B_RGB24, 800, 600, 0, 0, MODE_FLAGS}, /* SVGA_800X600X56HzNI */
  25 { { 40000, 800, 840, 968, 1056, 600, 601, 605, 628, T_POSITIVE_SYNC}, B_RGB24, 800, 600, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(800X600X8.Z1) */
  26 { { 49500, 800, 816, 896, 1056, 600, 601, 604, 625, T_POSITIVE_SYNC}, B_RGB24, 800, 600, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(800X600X8.Z1) */
  27 { { 50000, 800, 856, 976, 1040, 600, 637, 643, 666, T_POSITIVE_SYNC}, B_RGB24, 800, 600, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@70-72Hz_(800X600X8.Z1) */
  28 { { 56250, 800, 832, 896, 1048, 600, 601, 604, 631, T_POSITIVE_SYNC}, B_RGB24, 800, 600, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@85Hz_(800X600X8.Z1) */
  29 { { 65000, 1024, 1048, 1184, 1344, 768, 771, 777, 806, 0}, B_RGB24, 1024, 768, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1024X768X8.Z1) */
  30 { { 75000, 1024, 1048, 1184, 1328, 768, 771, 777, 806, 0}, B_RGB24, 1024, 768, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@70-72Hz_(1024X768X8.Z1) */
  31 { { 78750, 1024, 1040, 1136, 1312, 768, 769, 772, 800, T_POSITIVE_SYNC}, B_RGB24, 1024, 768, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(1024X768X8.Z1) */
  32 { { 94500, 1024, 1072, 1168, 1376, 768, 769, 772, 808, T_POSITIVE_SYNC}, B_RGB24, 1024, 768, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@85Hz_(1024X768X8.Z1) */
  33 { { 94200, 1152, 1184, 1280, 1472, 864, 865, 868, 914, T_POSITIVE_SYNC}, B_RGB24, 1152, 864, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@70Hz_(1152X864X8.Z1) */
  34 { { 108000, 1152, 1216, 1344, 1600, 864, 865, 868, 900, T_POSITIVE_SYNC}, B_RGB24, 1152, 864, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(1152X864X8.Z1) */
  35 { { 121500, 1152, 1216, 1344, 1568, 864, 865, 868, 911, T_POSITIVE_SYNC}, B_RGB24, 1152, 864, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@85Hz_(1152X864X8.Z1) */
  36 { { 108000, 1280, 1328, 1440, 1688, 1024, 1025, 1028, 1066, T_POSITIVE_SYNC}, B_RGB24, 1280, 1024, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1280X1024X8.Z1) */
  37 { { 135000, 1280, 1296, 1440, 1688, 1024, 1025, 1028, 1066, T_POSITIVE_SYNC}, B_RGB24, 1280, 1024, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(1280X1024X8.Z1) */
  38 { { 157500, 1280, 1344, 1504, 1728, 1024, 1025, 1028, 1072, T_POSITIVE_SYNC}, B_RGB24, 1280, 1024, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@85Hz_(1280X1024X8.Z1) */
  39 { { 162000, 1600, 1664, 1856, 2160, 1200, 1201, 1204, 1250, T_POSITIVE_SYNC}, B_RGB24, 1600, 1200, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1600X1200X8.Z1) */
  40 { { 175500, 1600, 1664, 1856, 2160, 1200, 1201, 1204, 1250, T_POSITIVE_SYNC}, B_RGB24, 1600, 1200, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@65Hz_(1600X1200X8.Z1) */
  41 { { 189000, 1600, 1664, 1856, 2160, 1200, 1201, 1204, 1250, T_POSITIVE_SYNC}, B_RGB24, 1600, 1200, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@70Hz_(1600X1200X8.Z1) */
  42 { { 202500, 1600, 1664, 1856, 2160, 1200, 1201, 1204, 1250, T_POSITIVE_SYNC}, B_RGB24, 1600, 1200, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(1600X1200X8.Z1) */
  43 { { 216000, 1600, 1664, 1856, 2160, 1200, 1201, 1204, 1250, T_POSITIVE_SYNC}, B_RGB24, 1600, 1200, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@80Hz_(1600X1200X8.Z1) */
  44 { { 229500, 1600, 1664, 1856, 2160, 1200, 1201, 1204, 1250, T_POSITIVE_SYNC}, B_RGB24, 1600, 1200, 0, 0, MODE_FLAGS}  /* Vesa_Monitor_@85Hz_(1600X1200X8.Z1) */
  45 };
  46 /*****************************************************************************/
  47 /*
  48  * Validate a target display mode is both
  49  *      a) a valid display mode for this device and
  50  *      b) falls between the contraints imposed by "low" and "high"
  51  *
  52  * If the mode is not (or cannot) be made valid for this device, return B_ERROR.
  53  * If a valid mode can be constructed, but it does not fall within the limits,
  54  *  return B_BAD_VALUE.
  55  * If the mode is both valid AND falls within the limits, return B_OK.
  56  */
  57 status_t PROPOSE_DISPLAY_MODE(display_mode *target,
  58                               const display_mode *low,
  59                               const display_mode *high)
  60 {
  61 ET6000DisplayMode mode;
  62
  63     mode.magic = ET6000_PRIVATE_DATA_MAGIC;
  64     mode.mode = *target;
  65     mode.memSize = si->memSize;
  66
  67     return ioctl(fd, ET6000_PROPOSE_DISPLAY_MODE, &mode, sizeof(mode));
  68 }
  69 /*****************************************************************************/
  70 /*
  71  * Return the number of modes this device will return from GET_MODE_LIST().
  72  */
  73 uint32 ACCELERANT_MODE_COUNT(void) {
  74         /* return the number of 'built-in' display modes */
  75         return si->modesNum;
  76 }
  77 /*****************************************************************************/
  78 /*
  79  * Copy the list of guaranteed supported video modes to the location provided.
  80  */
  81 status_t GET_MODE_LIST(display_mode *dm) {
  82     /* copy them to the buffer pointed at by *dm */
  83     memcpy(dm, et6000ModesList, si->modesNum * sizeof(display_mode));
  84     return B_OK;
  85 }
  86 /*****************************************************************************/
  87 /*
  88  * Create a list of display_modes to pass back to the caller.
  89  */
  90 status_t createModesList(void) {
  91 size_t maxSize;
  92 uint32 i, j, pixelClockRange;
  93 const display_mode *src;
  94 display_mode *dst, low, high;
  95 color_space spaces[] = {B_RGB15_LITTLE, B_RGB16_LITTLE, B_RGB24_LITTLE};
  96
  97
  98     /* figure out how big the list could be, and adjust up to nearest multiple of B_PAGE_SIZE */
  99     maxSize = (((MODE_COUNT * 3) * sizeof(display_mode)) + (B_PAGE_SIZE-1)) & ~(B_PAGE_SIZE-1);
 100
 101     /* Create an area to hold the info */
 102     si->modesArea = et6000ModesListArea =
 103         create_area("ET6000 accelerant mode info", (void **)&et6000ModesList,
 104             B_ANY_ADDRESS, maxSize, B_NO_LOCK, B_READ_AREA | B_WRITE_AREA);
 105
 106     if (et6000ModesListArea < B_OK)
 107         return et6000ModesListArea;
 108
 109     /* walk through our predefined list and see which modes fit this device */
 110     src = modesList;
 111     dst = et6000ModesList;
 112     si->modesNum = 0;
 113     for (i = 0; i < MODE_COUNT; i++) {
 114         /* set ranges for acceptable values */
 115         low = high = *src;
 116         /* range is 6.25% of default clock: arbitrarily picked */
 117         pixelClockRange = low.timing.pixel_clock >> 5;
 118         low.timing.pixel_clock -= pixelClockRange;
 119         high.timing.pixel_clock += pixelClockRange;
 120         /* some cards need wider virtual widths for certain modes */
 121         high.virtual_width = 2048;
 122         /* do it once for each depth we want to support */
 123         for (j = 0; j < (sizeof(spaces) / sizeof(color_space)); j++) {
 124             /* set target values */
 125             *dst = *src;
 126             /* poke the specific space */
 127             dst->space = low.space = high.space = spaces[j];
 128             /* ask for a compatible mode */
 129             if (PROPOSE_DISPLAY_MODE(dst, &low, &high) != B_ERROR) {
 130                 /* count it, and move on to next mode */
 131                 dst++;
 132                 si->modesNum++;
 133             }
 134         }
 135         /* advance to next mode */
 136         src++;
 137     }
 138
 139     return B_OK;
 140 }
 141 /*****************************************************************************/