xf86EdidModes.c 19 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
/*
 * Copyright 2006 Luc Verhaegen.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sub license,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

/**
25 26 27
 * @file This file covers code to convert a xf86MonPtr containing EDID-probed
 * information into a list of modes, including applying monitor-specific
 * quirks to fix broken EDID data.
28 29 30
 */
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
31 32 33 34
#else
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53
#endif

#include "xf86.h"
#include "xf86DDC.h"
#include <X11/Xatom.h>
#include "property.h"
#include "propertyst.h"
#include "xf86DDC.h"
#include "xf86Crtc.h"
#include <string.h>
#include <math.h>

/*
 * Quirks to work around broken EDID data from various monitors.
 */

typedef enum {
    DDC_QUIRK_NONE = 0,
    /* First detailed mode is bogus, prefer largest mode at 60hz */
54
    DDC_QUIRK_PREFER_LARGE_60 = 1 << 0,
55
    /* 135MHz clock is too high, drop a bit */
56
    DDC_QUIRK_135_CLOCK_TOO_HIGH = 1 << 1,
57 58 59 60 61 62 63 64 65 66
    /* Prefer the largest mode at 75 Hz */
    DDC_QUIRK_PREFER_LARGE_75 = 1 << 2,
    /* Convert detailed timing's horizontal from units of cm to mm */
    DDC_QUIRK_DETAILED_H_IN_CM = 1 << 3,
    /* Convert detailed timing's vertical from units of cm to mm */
    DDC_QUIRK_DETAILED_V_IN_CM = 1 << 4,
    /* Detailed timing descriptors have bogus size values, so just take the
     * maximum size and use that.
     */
    DDC_QUIRK_DETAILED_USE_MAXIMUM_SIZE = 1 << 5,
67 68 69 70 71 72 73 74 75
} ddc_quirk_t;

static Bool quirk_prefer_large_60 (int scrnIndex, xf86MonPtr DDC)
{
    /* Belinea 10 15 55 */
    if (memcmp (DDC->vendor.name, "MAX", 4) == 0 &&
	DDC->vendor.prod_id == 1516)
	return TRUE;
    
76 77 78 79
    /* Acer AL1706 */
    if (memcmp (DDC->vendor.name, "ACR", 4) == 0 &&
	DDC->vendor.prod_id == 44358)
	return TRUE;
80

81 82 83 84 85 86
    /* Bug #10814: Samsung SyncMaster 225BW */
    if (memcmp (DDC->vendor.name, "SAM", 4) == 0 &&
	DDC->vendor.prod_id == 596)
	return TRUE;

    /* Bug #10545: Samsung SyncMaster 226BW */
87 88 89
    if (memcmp (DDC->vendor.name, "SAM", 4) == 0 &&
	DDC->vendor.prod_id == 638)
	return TRUE;
90

91 92 93
    return FALSE;
}

94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139
static Bool quirk_prefer_large_75 (int scrnIndex, xf86MonPtr DDC)
{
    /* Bug #11603: Funai Electronics PM36B */
    if (memcmp (DDC->vendor.name, "FCM", 4) == 0 &&
	DDC->vendor.prod_id == 13600)
	return TRUE;

    return FALSE;
}

static Bool quirk_detailed_h_in_cm (int scrnIndex, xf86MonPtr DDC)
{
    /* Bug #10304: "LGPhilipsLCD LP154W01-A5" */
    /* Bug #12784: "LGPhilipsLCD LP154W01-TLA2" */
    if (memcmp (DDC->vendor.name, "LPL", 4) == 0 &&
	DDC->vendor.prod_id == 0)
	return TRUE;

    /* Bug #11603: Funai Electronics PM36B */
    if (memcmp (DDC->vendor.name, "FCM", 4) == 0 &&
	DDC->vendor.prod_id == 13600)
	return TRUE;

    return FALSE;
}

static Bool quirk_detailed_v_in_cm (int scrnIndex, xf86MonPtr DDC)
{
    /* Bug #11603: Funai Electronics PM36B */
    if (memcmp (DDC->vendor.name, "FCM", 4) == 0 &&
	DDC->vendor.prod_id == 13600)
	return TRUE;

    return FALSE;
}

static Bool quirk_detailed_use_maximum_size (int scrnIndex, xf86MonPtr DDC)
{
    /* Bug #10304: LGPhilipsLCD LP154W01-A5 */
    if (memcmp (DDC->vendor.name, "LPL", 4) == 0 &&
	DDC->vendor.prod_id == 0)
	return TRUE;

    return FALSE;
}

140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164
static Bool quirk_135_clock_too_high (int scrnIndex, xf86MonPtr DDC)
{
    /* Envision Peripherals, Inc. EN-7100e.  See bug #9550. */
    if (memcmp (DDC->vendor.name, "EPI", 4) == 0 &&
	DDC->vendor.prod_id == 59264)
	return TRUE;
    
    return FALSE;
}

typedef struct {
    Bool	(*detect) (int scrnIndex, xf86MonPtr DDC);
    ddc_quirk_t	quirk;
    char	*description;
} ddc_quirk_map_t;

static const ddc_quirk_map_t ddc_quirks[] = {
    {
	quirk_prefer_large_60,   DDC_QUIRK_PREFER_LARGE_60,
	"Detailed timing is not preferred, use largest mode at 60Hz"
    },
    {
	quirk_135_clock_too_high,   DDC_QUIRK_135_CLOCK_TOO_HIGH,
	"Recommended 135MHz pixel clock is too high"
    },
165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180
    {
	quirk_prefer_large_75,   DDC_QUIRK_PREFER_LARGE_75,
	"Detailed timing is not preferred, use largest mode at 75Hz"
    },
    {
	quirk_detailed_h_in_cm,   DDC_QUIRK_DETAILED_H_IN_CM,
	"Detailed timings give horizontal size in cm."
    },
    {
	quirk_detailed_v_in_cm,   DDC_QUIRK_DETAILED_V_IN_CM,
	"Detailed timings give vertical size in cm."
    },
    {
	quirk_detailed_use_maximum_size,   DDC_QUIRK_DETAILED_USE_MAXIMUM_SIZE,
	"Detailed timings give sizes in cm."
    },
181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263
    { 
	NULL,		DDC_QUIRK_NONE,
	"No known quirks"
    },
};

/*
 * TODO:
 *  - for those with access to the VESA DMT standard; review please.
 */
#define MODEPREFIX(name) NULL, NULL, name, 0,M_T_DRIVER
#define MODESUFFIX   0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,FALSE,FALSE,0,NULL,0,0.0,0.0

static DisplayModeRec DDCEstablishedModes[17] = {
    { MODEPREFIX("800x600"),    40000,  800,  840,  968, 1056, 0,  600,  601,  605,  628, 0, V_PHSYNC | V_PVSYNC, MODESUFFIX }, /* 800x600@60Hz */
    { MODEPREFIX("800x600"),    36000,  800,  824,  896, 1024, 0,  600,  601,  603,  625, 0, V_PHSYNC | V_PVSYNC, MODESUFFIX }, /* 800x600@56Hz */
    { MODEPREFIX("640x480"),    31500,  640,  656,  720,  840, 0,  480,  481,  484,  500, 0, V_NHSYNC | V_NVSYNC, MODESUFFIX }, /* 640x480@75Hz */
    { MODEPREFIX("640x480"),    31500,  640,  664,  704,  832, 0,  480,  489,  491,  520, 0, V_NHSYNC | V_NVSYNC, MODESUFFIX }, /* 640x480@72Hz */
    { MODEPREFIX("640x480"),    30240,  640,  704,  768,  864, 0,  480,  483,  486,  525, 0, V_NHSYNC | V_NVSYNC, MODESUFFIX }, /* 640x480@67Hz */
    { MODEPREFIX("640x480"),    25200,  640,  656,  752,  800, 0,  480,  490,  492,  525, 0, V_NHSYNC | V_NVSYNC, MODESUFFIX }, /* 640x480@60Hz */
    { MODEPREFIX("720x400"),    35500,  720,  738,  846,  900, 0,  400,  421,  423,  449, 0, V_NHSYNC | V_NVSYNC, MODESUFFIX }, /* 720x400@88Hz */
    { MODEPREFIX("720x400"),    28320,  720,  738,  846,  900, 0,  400,  412,  414,  449, 0, V_NHSYNC | V_PVSYNC, MODESUFFIX }, /* 720x400@70Hz */
    { MODEPREFIX("1280x1024"), 135000, 1280, 1296, 1440, 1688, 0, 1024, 1025, 1028, 1066, 0, V_PHSYNC | V_PVSYNC, MODESUFFIX }, /* 1280x1024@75Hz */
    { MODEPREFIX("1024x768"),   78800, 1024, 1040, 1136, 1312, 0,  768,  769,  772,  800, 0, V_PHSYNC | V_PVSYNC, MODESUFFIX }, /* 1024x768@75Hz */
    { MODEPREFIX("1024x768"),   75000, 1024, 1048, 1184, 1328, 0,  768,  771,  777,  806, 0, V_NHSYNC | V_NVSYNC, MODESUFFIX }, /* 1024x768@70Hz */
    { MODEPREFIX("1024x768"),   65000, 1024, 1048, 1184, 1344, 0,  768,  771,  777,  806, 0, V_NHSYNC | V_NVSYNC, MODESUFFIX }, /* 1024x768@60Hz */
    { MODEPREFIX("1024x768"),   44900, 1024, 1032, 1208, 1264, 0,  768,  768,  776,  817, 0, V_PHSYNC | V_PVSYNC | V_INTERLACE, MODESUFFIX }, /* 1024x768@43Hz */
    { MODEPREFIX("832x624"),    57284,  832,  864,  928, 1152, 0,  624,  625,  628,  667, 0, V_NHSYNC | V_NVSYNC, MODESUFFIX }, /* 832x624@75Hz */
    { MODEPREFIX("800x600"),    49500,  800,  816,  896, 1056, 0,  600,  601,  604,  625, 0, V_PHSYNC | V_PVSYNC, MODESUFFIX }, /* 800x600@75Hz */
    { MODEPREFIX("800x600"),    50000,  800,  856,  976, 1040, 0,  600,  637,  643,  666, 0, V_PHSYNC | V_PVSYNC, MODESUFFIX }, /* 800x600@72Hz */
    { MODEPREFIX("1152x864"),  108000, 1152, 1216, 1344, 1600, 0,  864,  865,  868,  900, 0, V_PHSYNC | V_PVSYNC, MODESUFFIX }, /* 1152x864@75Hz */
};

static DisplayModePtr
DDCModesFromEstablished(int scrnIndex, struct established_timings *timing,
			ddc_quirk_t quirks)
{
    DisplayModePtr Modes = NULL, Mode = NULL;
    CARD32 bits = (timing->t1) | (timing->t2 << 8) |
        ((timing->t_manu & 0x80) << 9);
    int i;

    for (i = 0; i < 17; i++) {
        if (bits & (0x01 << i)) {
            Mode = xf86DuplicateMode(&DDCEstablishedModes[i]);
            Modes = xf86ModesAdd(Modes, Mode);
        }
    }

    return Modes;
}

/*
 *
 */
static DisplayModePtr
DDCModesFromStandardTiming(int scrnIndex, struct std_timings *timing,
			   ddc_quirk_t quirks)
{
    DisplayModePtr Modes = NULL, Mode = NULL;
    int i;

    for (i = 0; i < STD_TIMINGS; i++) {
        if (timing[i].hsize && timing[i].vsize && timing[i].refresh) {
            Mode =  xf86CVTMode(timing[i].hsize, timing[i].vsize,
                                timing[i].refresh, FALSE, FALSE);
	    Mode->type = M_T_DRIVER;
            Modes = xf86ModesAdd(Modes, Mode);
        }
    }

    return Modes;
}

/*
 *
 */
static DisplayModePtr
DDCModeFromDetailedTiming(int scrnIndex, struct detailed_timings *timing,
			  int preferred, ddc_quirk_t quirks)
{
    DisplayModePtr Mode;

264 265 266 267 268 269 270 271 272 273 274 275 276
    /*
     * Refuse to create modes that are insufficiently large.  64 is a random
     * number, maybe the spec says something about what the minimum is.  In
     * particular I see this frequently with _old_ EDID, 1.0 or so, so maybe
     * our parser is just being too aggresive there.
     */
    if (timing->h_active < 64 || timing->v_active < 64) {
	xf86DrvMsg(scrnIndex, X_INFO,
		   "%s: Ignoring tiny %dx%d mode\n", __func__,
		   timing->h_active, timing->v_active);
	return NULL;
    }

277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320
    /* We don't do stereo */
    if (timing->stereo) {
        xf86DrvMsg(scrnIndex, X_INFO,
		   "%s: Ignoring: We don't handle stereo.\n", __func__);
        return NULL;
    }

    /* We only do seperate sync currently */
    if (timing->sync != 0x03) {
         xf86DrvMsg(scrnIndex, X_INFO,
		    "%s: %dx%d Warning: We only handle seperate"
                    " sync.\n", __func__, timing->h_active, timing->v_active);
    }

    Mode = xnfalloc(sizeof(DisplayModeRec));
    memset(Mode, 0, sizeof(DisplayModeRec));

    Mode->type = M_T_DRIVER;
    if (preferred)
	Mode->type |= M_T_PREFERRED;

    if( ( quirks & DDC_QUIRK_135_CLOCK_TOO_HIGH ) &&
	timing->clock == 135000000 )
        Mode->Clock = 108880;
    else
        Mode->Clock = timing->clock / 1000.0;

    Mode->HDisplay = timing->h_active;
    Mode->HSyncStart = timing->h_active + timing->h_sync_off;
    Mode->HSyncEnd = Mode->HSyncStart + timing->h_sync_width;
    Mode->HTotal = timing->h_active + timing->h_blanking;

    Mode->VDisplay = timing->v_active;
    Mode->VSyncStart = timing->v_active + timing->v_sync_off;
    Mode->VSyncEnd = Mode->VSyncStart + timing->v_sync_width;
    Mode->VTotal = timing->v_active + timing->v_blanking;

    xf86SetModeDefaultName(Mode);

    /* We ignore h/v_size and h/v_border for now. */

    if (timing->interlaced)
        Mode->Flags |= V_INTERLACE;

321 322
    if (timing->misc & 0x02)
	Mode->Flags |= V_PVSYNC;
323
    else
324 325 326 327 328 329
	Mode->Flags |= V_NVSYNC;

    if (timing->misc & 0x01)
	Mode->Flags |= V_PHSYNC;
    else
	Mode->Flags |= V_NHSYNC;
330 331 332 333

    return Mode;
}

334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377
/*
 *
 */
static void
DDCGuessRangesFromModes(int scrnIndex, MonPtr Monitor, DisplayModePtr Modes)
{
    DisplayModePtr Mode = Modes;

    if (!Monitor || !Modes)
        return;

    /* set up the ranges for scanning through the modes */
    Monitor->nHsync = 1;
    Monitor->hsync[0].lo = 1024.0;
    Monitor->hsync[0].hi = 0.0;

    Monitor->nVrefresh = 1;
    Monitor->vrefresh[0].lo = 1024.0;
    Monitor->vrefresh[0].hi = 0.0;

    while (Mode) {
        if (!Mode->HSync)
            Mode->HSync = ((float) Mode->Clock ) / ((float) Mode->HTotal);

        if (!Mode->VRefresh)
            Mode->VRefresh = (1000.0 * ((float) Mode->Clock)) / 
                ((float) (Mode->HTotal * Mode->VTotal));

        if (Mode->HSync < Monitor->hsync[0].lo)
            Monitor->hsync[0].lo = Mode->HSync;

        if (Mode->HSync > Monitor->hsync[0].hi)
            Monitor->hsync[0].hi = Mode->HSync;

        if (Mode->VRefresh < Monitor->vrefresh[0].lo)
            Monitor->vrefresh[0].lo = Mode->VRefresh;

        if (Mode->VRefresh > Monitor->vrefresh[0].hi)
            Monitor->vrefresh[0].hi = Mode->VRefresh;

        Mode = Mode->next;
    }
}

378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469
static ddc_quirk_t
xf86DDCDetectQuirks(int scrnIndex, xf86MonPtr DDC, Bool verbose)
{
    ddc_quirk_t	quirks;
    int i;

    quirks = DDC_QUIRK_NONE;
    for (i = 0; ddc_quirks[i].detect; i++) {
	if (ddc_quirks[i].detect (scrnIndex, DDC)) {
	    if (verbose) {
		xf86DrvMsg (scrnIndex, X_INFO, "    EDID quirk: %s\n",
			    ddc_quirks[i].description);
	    }
	    quirks |= ddc_quirks[i].quirk;
	}
    }

    return quirks;
}

/**
 * Applies monitor-specific quirks to the decoded EDID information.
 *
 * Note that some quirks applying to the mode list are still implemented in
 * xf86DDCGetModes.
 */
void
xf86DDCApplyQuirks(int scrnIndex, xf86MonPtr DDC)
{
    ddc_quirk_t quirks = xf86DDCDetectQuirks (scrnIndex, DDC, FALSE);
    int i;

    for (i = 0; i < DET_TIMINGS; i++) {
	struct detailed_monitor_section *det_mon = &DDC->det_mon[i];

	if (det_mon->type != DT)
	    continue;

	if (quirks & DDC_QUIRK_DETAILED_H_IN_CM)
	    det_mon->section.d_timings.h_size *= 10;

	if (quirks & DDC_QUIRK_DETAILED_V_IN_CM)
	    det_mon->section.d_timings.v_size *= 10;

	if (quirks & DDC_QUIRK_DETAILED_USE_MAXIMUM_SIZE) {
	    det_mon->section.d_timings.h_size = 10 * DDC->features.hsize;
	    det_mon->section.d_timings.v_size = 10 * DDC->features.vsize;
	}
    }
}

/**
 * Walks the modes list, finding the mode with the largest area which is
 * closest to the target refresh rate, and marks it as the only preferred mode.
*/
static void
xf86DDCSetPreferredRefresh(int scrnIndex, DisplayModePtr modes,
			   float target_refresh)
{
	DisplayModePtr	mode, best = modes;

	for (mode = modes; mode; mode = mode->next)
	{
	    mode->type &= ~M_T_PREFERRED;

	    if (mode == best) continue;

	    if (mode->HDisplay * mode->VDisplay >
		best->HDisplay * best->VDisplay)
	    {
		best = mode;
		continue;
	    }
	    if (mode->HDisplay * mode->VDisplay ==
		best->HDisplay * best->VDisplay)
	    {
		double	mode_refresh = xf86ModeVRefresh (mode);
		double	best_refresh = xf86ModeVRefresh (best);
		double	mode_dist = fabs(mode_refresh - target_refresh);
		double	best_dist = fabs(best_refresh - target_refresh);

		if (mode_dist < best_dist)
		{
		    best = mode;
		    continue;
		}
	    }
	}
	if (best)
	    best->type |= M_T_PREFERRED;
}

470
_X_EXPORT DisplayModePtr
471 472 473 474 475 476 477 478
xf86DDCGetModes(int scrnIndex, xf86MonPtr DDC)
{
    int preferred, i;
    DisplayModePtr  Modes = NULL, Mode;
    ddc_quirk_t	    quirks;

    xf86DrvMsg (scrnIndex, X_INFO, "EDID vendor \"%s\", prod id %d\n",
		DDC->vendor.name, DDC->vendor.prod_id);
479 480 481

    quirks = xf86DDCDetectQuirks(scrnIndex, DDC, TRUE);

482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517
    preferred = PREFERRED_TIMING_MODE(DDC->features.msc);
    if (quirks & DDC_QUIRK_PREFER_LARGE_60)
	preferred = 0;

    for (i = 0; i < DET_TIMINGS; i++) {
	struct detailed_monitor_section *det_mon = &DDC->det_mon[i];

        switch (det_mon->type) {
        case DT:
            Mode = DDCModeFromDetailedTiming(scrnIndex,
                                             &det_mon->section.d_timings,
					     preferred,
					     quirks);
	    preferred = 0;
            Modes = xf86ModesAdd(Modes, Mode);
            break;
        case DS_STD_TIMINGS:
            Mode = DDCModesFromStandardTiming(scrnIndex,
					      det_mon->section.std_t,
					      quirks);
            Modes = xf86ModesAdd(Modes, Mode);
            break;
        default:
            break;
        }
    }

    /* Add established timings */
    Mode = DDCModesFromEstablished(scrnIndex, &DDC->timings1, quirks);
    Modes = xf86ModesAdd(Modes, Mode);

    /* Add standard timings */
    Mode = DDCModesFromStandardTiming(scrnIndex, DDC->timings2, quirks);
    Modes = xf86ModesAdd(Modes, Mode);

    if (quirks & DDC_QUIRK_PREFER_LARGE_60)
518 519 520 521 522
	xf86DDCSetPreferredRefresh(scrnIndex, Modes, 60);

    if (quirks & DDC_QUIRK_PREFER_LARGE_75)
	xf86DDCSetPreferredRefresh(scrnIndex, Modes, 75);

523 524
    return Modes;
}
525 526 527 528

/*
 * Fill out MonPtr with xf86MonPtr information.
 */
529
_X_EXPORT void
530 531 532 533
xf86DDCMonitorSet(int scrnIndex, MonPtr Monitor, xf86MonPtr DDC)
{
    DisplayModePtr Modes = NULL, Mode;
    int i, clock;
534
    Bool have_hsync = FALSE, have_vrefresh = FALSE, have_maxpixclock = FALSE;
535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553

    if (!Monitor || !DDC)
        return;

    Monitor->DDC = DDC;

    Monitor->widthmm = 10 * DDC->features.hsize;
    Monitor->heightmm = 10 * DDC->features.vsize;

    /* If this is a digital display, then we can use reduced blanking */
    if (DDC->features.input_type)
        Monitor->reducedblanking = TRUE;
    /* Allow the user to also enable this through config */

    Modes = xf86DDCGetModes(scrnIndex, DDC);

    /* Skip EDID ranges if they were specified in the config file */
    have_hsync = (Monitor->nHsync != 0);
    have_vrefresh = (Monitor->nVrefresh != 0);
554
    have_maxpixclock = (Monitor->maxPixClock != 0);
555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588

    /* Go through the detailed monitor sections */
    for (i = 0; i < DET_TIMINGS; i++) {
        switch (DDC->det_mon[i].type) {
        case DS_RANGES:
	    if (!have_hsync) {
		if (!Monitor->nHsync)
		    xf86DrvMsg(scrnIndex, X_INFO,
			    "Using EDID range info for horizontal sync\n");
		Monitor->hsync[Monitor->nHsync].lo =
		    DDC->det_mon[i].section.ranges.min_h;
		Monitor->hsync[Monitor->nHsync].hi =
		    DDC->det_mon[i].section.ranges.max_h;
		Monitor->nHsync++;
	    } else {
		xf86DrvMsg(scrnIndex, X_INFO,
			"Using hsync ranges from config file\n");
	    }

	    if (!have_vrefresh) {
		if (!Monitor->nVrefresh)
		    xf86DrvMsg(scrnIndex, X_INFO,
			    "Using EDID range info for vertical refresh\n");
		Monitor->vrefresh[Monitor->nVrefresh].lo =
		    DDC->det_mon[i].section.ranges.min_v;
		Monitor->vrefresh[Monitor->nVrefresh].hi =
		    DDC->det_mon[i].section.ranges.max_v;
		Monitor->nVrefresh++;
	    } else {
		xf86DrvMsg(scrnIndex, X_INFO,
			"Using vrefresh ranges from config file\n");
	    }

	    clock = DDC->det_mon[i].section.ranges.max_clock * 1000;
589
	    if (!have_maxpixclock && clock > Monitor->maxPixClock)
590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628
		Monitor->maxPixClock = clock;

            break;
        default:
            break;
        }
    }

    if (Modes) {
        /* Print Modes */
        xf86DrvMsg(scrnIndex, X_INFO, "Printing DDC gathered Modelines:\n");

        Mode = Modes;
        while (Mode) {
            xf86PrintModeline(scrnIndex, Mode);
            Mode = Mode->next;
        }

        /* Do we still need ranges to be filled in? */
        if (!Monitor->nHsync || !Monitor->nVrefresh)
            DDCGuessRangesFromModes(scrnIndex, Monitor, Modes);

        /* look for last Mode */
        Mode = Modes;

        while (Mode->next)
            Mode = Mode->next;

        /* add to MonPtr */
        if (Monitor->Modes) {
            Monitor->Last->next = Modes;
            Modes->prev = Monitor->Last;
            Monitor->Last = Mode;
        } else {
            Monitor->Modes = Modes;
            Monitor->Last = Mode;
        }
    }
}