| 1 | /* |
| 2 | * Copyright 2009 Red Hat, Inc. |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software") |
| 6 | * to deal in the software without restriction, including without limitation |
| 7 | * on the rights to use, copy, modify, merge, publish, distribute, sub |
| 8 | * license, and/or sell copies of the Software, and to permit persons to whom |
| 9 | * them Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTIBILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES, OR OTHER LIABILITY, WHETHER |
| 19 | * IN AN ACTION OF CONTRACT, TORT, OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 20 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 21 | * |
| 22 | * Authors: |
| 23 | * Adam Jackson <ajax@redhat.com> |
| 24 | */ |
| 25 | |
| 26 | #include "xorg-config.h" |
| 27 | #include "xf86.h" |
| 28 | #include "xf86Modes.h" |
| 29 | #include "xf86str.h" |
| 30 | #include "edid.h" |
| 31 | #include "xf86DDC.h" |
| 32 | |
| 33 | typedef void (*did_proc) (int scrnIndex, unsigned char *data, void *closure); |
| 34 | |
| 35 | #define DID_PRODUCT_ID 0x00 |
| 36 | #define DID_DISPLAY_PARAMETERS 0x01 |
| 37 | #define DID_COLOR_INFO 0x02 |
| 38 | #define DID_TIMING_1_DETAILED 0x03 |
| 39 | #define DID_TIMING_2_DETAILED 0x04 |
| 40 | #define DID_TIMING_3_SHORT 0x05 |
| 41 | #define DID_TIMING_4_DMT 0x06 |
| 42 | #define DID_TIMING_VESA 0x07 |
| 43 | #define DID_TIMING_CEA 0x08 |
| 44 | #define DID_TIMING_RANGE_LIMITS 0x09 |
| 45 | #define DID_PRODUCT_SERIAL 0x0A |
| 46 | #define DID_ASCII_STRING 0x0B |
| 47 | #define DID_DISPLAY_DEVICE 0x0C |
| 48 | #define DID_POWER_SEQUENCING 0x0D |
| 49 | #define DID_TRANSFER_INFO 0x0E |
| 50 | #define DID_DISPLAY_INTERFACE 0x0F |
| 51 | #define DID_STEREO 0x10 |
| 52 | #define DID_VENDOR 0x7F |
| 53 | |
| 54 | #define extract_le16(x, i) ((x[i+1] << 8) + (x[i])) |
| 55 | #define extract_le24(x, i) ((x[i+2] << 16) + (x[i+1] << 8) + (x[i])) |
| 56 | |
| 57 | static DisplayModePtr |
| 58 | modeCalloc(void) |
| 59 | { |
| 60 | return calloc(1, sizeof(DisplayModeRec)); |
| 61 | } |
| 62 | |
| 63 | /* |
| 64 | * How awesome is it to have two detailed timing formats, neither of which |
| 65 | * are compatible with the format in EDID? So awesome. |
| 66 | */ |
| 67 | |
| 68 | static void |
| 69 | didDetailedTiming1(int i, unsigned char *x, MonPtr mon) |
| 70 | { |
| 71 | DisplayModePtr m = modeCalloc(); |
| 72 | |
| 73 | if (!m) |
| 74 | return; |
| 75 | |
| 76 | m->Clock = extract_le24(x, 0); |
| 77 | |
| 78 | m->HDisplay = extract_le16(x, 4); |
| 79 | m->HSyncStart = m->HDisplay + (extract_le16(x, 8) & 0x7f); |
| 80 | m->HSyncEnd = m->HSyncStart + extract_le16(x, 10); |
| 81 | m->HTotal = m->HDisplay + extract_le16(x, 6); |
| 82 | m->Flags |= (x[9] & 0x80) ? V_PHSYNC : V_NHSYNC; |
| 83 | |
| 84 | m->VDisplay = extract_le16(x, 12); |
| 85 | m->VSyncStart = m->VDisplay + (extract_le16(x, 16) & 0x7f); |
| 86 | m->VSyncEnd = m->VSyncStart + extract_le16(x, 18); |
| 87 | m->VTotal = m->VDisplay + extract_le16(x, 14); |
| 88 | m->Flags |= (x[17] & 0x80) ? V_PVSYNC : V_NVSYNC; |
| 89 | |
| 90 | m->type = M_T_DRIVER; |
| 91 | if (x[3] & 0x80) |
| 92 | m->type |= M_T_PREFERRED; |
| 93 | |
| 94 | /* XXX double check handling of this */ |
| 95 | if (x[3] & 0x10) |
| 96 | m->Flags |= V_INTERLACE; |
| 97 | |
| 98 | mon->Modes = xf86ModesAdd(mon->Modes, m); |
| 99 | } |
| 100 | |
| 101 | /* XXX no sync bits. what to do? */ |
| 102 | static void |
| 103 | didDetailedTiming2(int i, unsigned char *x, MonPtr mon) |
| 104 | { |
| 105 | DisplayModePtr mode = modeCalloc(); |
| 106 | |
| 107 | if (!mode) |
| 108 | return; |
| 109 | |
| 110 | mode->Clock = extract_le24(x, 0); |
| 111 | |
| 112 | /* horiz sizes are in character cells, not pixels, hence * 8 */ |
| 113 | mode->HDisplay = ((extract_le16(x, 4) & 0x01ff) + 1) * 8; |
| 114 | mode->HSyncStart = mode->HDisplay + (((x[6] & 0xf0) >> 4) + 1) * 8; |
| 115 | mode->HSyncEnd = mode->HSyncStart + ((x[6] & 0x0f) + 1) * 8; |
| 116 | mode->HTotal = mode->HDisplay + ((x[5] >> 1) + 1) * 8; |
| 117 | |
| 118 | mode->VDisplay = extract_le16(x, 7) & 0x07ff; |
| 119 | mode->VSyncStart = mode->VDisplay + (x[10] >> 4) + 1; |
| 120 | mode->VSyncEnd = mode->VSyncStart + (x[10] & 0x0f) + 1; |
| 121 | mode->VTotal = mode->VDisplay + x[9]; |
| 122 | |
| 123 | mode->status = M_T_DRIVER; |
| 124 | if (x[3] & 0x80) |
| 125 | mode->status |= M_T_PREFERRED; |
| 126 | |
| 127 | /* XXX double check handling of this */ |
| 128 | if (x[3] & 0x10) |
| 129 | mode->Flags |= V_INTERLACE; |
| 130 | |
| 131 | mon->Modes = xf86ModesAdd(mon->Modes, mode); |
| 132 | } |
| 133 | |
| 134 | static void |
| 135 | didShortTiming(int i, unsigned char *x, MonPtr mon) |
| 136 | { |
| 137 | DisplayModePtr m; |
| 138 | int w, h, r; |
| 139 | |
| 140 | w = (x[1] + 1) * 8; |
| 141 | switch (x[0] & 0x0f) { |
| 142 | case 0: |
| 143 | h = w; |
| 144 | break; |
| 145 | case 1: |
| 146 | h = (w * 4) / 5; |
| 147 | break; |
| 148 | case 2: |
| 149 | h = (w * 3) / 4; |
| 150 | break; |
| 151 | case 3: |
| 152 | h = (w * 9) / 15; |
| 153 | break; |
| 154 | case 4: |
| 155 | h = (w * 9) / 16; |
| 156 | break; |
| 157 | case 5: |
| 158 | h = (w * 10) / 16; |
| 159 | break; |
| 160 | default: |
| 161 | return; |
| 162 | } |
| 163 | r = (x[2] & 0x7f) + 1; |
| 164 | |
| 165 | m = xf86CVTMode(w, h, r, ! !(x[0] & 0x10), ! !(x[2] & 0x80)); |
| 166 | |
| 167 | m->type = M_T_DRIVER; |
| 168 | if (x[0] & 0x80) |
| 169 | m->type |= M_T_PREFERRED; |
| 170 | |
| 171 | mon->Modes = xf86ModesAdd(mon->Modes, m); |
| 172 | } |
| 173 | |
| 174 | static void |
| 175 | didDMTTiming(int i, unsigned char *x, void *closure) |
| 176 | { |
| 177 | MonPtr mon = closure; |
| 178 | |
| 179 | mon->Modes = xf86ModesAdd(mon->Modes, xf86DuplicateMode(DMTModes + *x)); |
| 180 | } |
| 181 | |
| 182 | #define RB 1 |
| 183 | #define INT 2 |
| 184 | static const struct did_dmt { |
| 185 | short w, h, r, f; |
| 186 | } did_dmt[] = { |
| 187 | /* byte 3 */ |
| 188 | {640, 350, 85, 0}, |
| 189 | {640, 400, 85, 0}, |
| 190 | {720, 400, 85, 0}, |
| 191 | {640, 480, 60, 0}, |
| 192 | {640, 480, 72, 0}, |
| 193 | {640, 480, 75, 0}, |
| 194 | {640, 480, 85, 0}, |
| 195 | {800, 600, 56, 0}, |
| 196 | /* byte 4 */ |
| 197 | {800, 600, 60, 0}, |
| 198 | {800, 600, 72, 0}, |
| 199 | {800, 600, 75, 0}, |
| 200 | {800, 600, 85, 0}, |
| 201 | {800, 600, 120, RB}, |
| 202 | {848, 480, 60, 0}, |
| 203 | {1024, 768, 43, INT}, |
| 204 | {1024, 768, 60, 0}, |
| 205 | /* byte 5 */ |
| 206 | {1024, 768, 70, 0}, |
| 207 | {1024, 768, 75, 0}, |
| 208 | {1024, 768, 85, 0}, |
| 209 | {1024, 768, 120, RB}, |
| 210 | {1152, 864, 75, 0}, |
| 211 | {1280, 768, 60, RB}, |
| 212 | {1280, 768, 60, 0}, |
| 213 | {1280, 768, 75, 0}, |
| 214 | /* byte 6 */ |
| 215 | {1280, 768, 85, 0}, |
| 216 | {1280, 768, 120, RB}, |
| 217 | {1280, 800, 60, RB}, |
| 218 | {1280, 800, 60, 0}, |
| 219 | {1280, 800, 75, 0}, |
| 220 | {1280, 800, 85, 0}, |
| 221 | {1280, 800, 120, RB}, |
| 222 | {1280, 960, 60, 0}, |
| 223 | /* byte 7 */ |
| 224 | {1280, 960, 85, 0}, |
| 225 | {1280, 960, 120, RB}, |
| 226 | {1280, 1024, 60, 0}, |
| 227 | {1280, 1024, 75, 0}, |
| 228 | {1280, 1024, 85, 0}, |
| 229 | {1280, 1024, 120, RB}, |
| 230 | {1360, 768, 60, 0}, |
| 231 | {1360, 768, 120, RB}, |
| 232 | /* byte 8 */ |
| 233 | {1400, 1050, 60, RB}, |
| 234 | {1400, 1050, 60, 0}, |
| 235 | {1400, 1050, 75, 0}, |
| 236 | {1400, 1050, 85, 0}, |
| 237 | {1400, 1050, 120, RB}, |
| 238 | {1440, 900, 60, RB}, |
| 239 | {1440, 900, 60, 0}, |
| 240 | {1440, 900, 75, 0}, |
| 241 | /* byte 9 */ |
| 242 | {1440, 900, 85, 0}, |
| 243 | {1440, 900, 120, RB}, |
| 244 | {1600, 1200, 60, 0}, |
| 245 | {1600, 1200, 65, 0}, |
| 246 | {1600, 1200, 70, 0}, |
| 247 | {1600, 1200, 75, 0}, |
| 248 | {1600, 1200, 85, 0}, |
| 249 | {1600, 1200, 120, RB}, |
| 250 | /* byte a */ |
| 251 | {1680, 1050, 60, RB}, |
| 252 | {1680, 1050, 60, 0}, |
| 253 | {1680, 1050, 75, 0}, |
| 254 | {1680, 1050, 85, 0}, |
| 255 | {1680, 1050, 120, RB}, |
| 256 | {1792, 1344, 60, 0}, |
| 257 | {1792, 1344, 75, 0}, |
| 258 | {1792, 1344, 120, RB}, |
| 259 | /* byte b */ |
| 260 | {1856, 1392, 60, 0}, |
| 261 | {1856, 1392, 75, 0}, |
| 262 | {1856, 1392, 120, RB}, |
| 263 | {1920, 1200, 60, RB}, |
| 264 | {1920, 1200, 60, 0}, |
| 265 | {1920, 1200, 75, 0}, |
| 266 | {1920, 1200, 85, 0}, |
| 267 | {1920, 1200, 120, RB}, |
| 268 | /* byte c */ |
| 269 | {1920, 1440, 60, 0}, |
| 270 | {1920, 1440, 75, 0}, |
| 271 | {1920, 1440, 120, RB}, |
| 272 | {2560, 1600, 60, RB}, |
| 273 | {2560, 1600, 60, 0}, |
| 274 | {2560, 1600, 75, 0}, |
| 275 | {2560, 1600, 85, 0}, |
| 276 | {2560, 1600, 120, RB}, |
| 277 | }; |
| 278 | |
| 279 | static void |
| 280 | didVesaTiming(int scrn, unsigned char *x, MonPtr mon) |
| 281 | { |
| 282 | int i, j; |
| 283 | |
| 284 | x += 3; |
| 285 | |
| 286 | for (i = 0; i < 10; i++) |
| 287 | for (j = 0; j < 8; j++) |
| 288 | if (x[i] & (1 << j)) { |
| 289 | const struct did_dmt *d = &(did_dmt[i * 8 + j]); |
| 290 | |
| 291 | if (d->f == INT) |
| 292 | continue; |
| 293 | mon->Modes = xf86ModesAdd(mon->Modes, |
| 294 | FindDMTMode(d->w, d->h, d->r, |
| 295 | d->f == RB)); |
| 296 | } |
| 297 | |
| 298 | } |
| 299 | |
| 300 | static void |
| 301 | handleDisplayIDBlock(int scrnIndex, unsigned char *x, void *closure) |
| 302 | { |
| 303 | MonPtr mon = closure; |
| 304 | |
| 305 | switch (x[0]) { |
| 306 | case DID_DISPLAY_PARAMETERS: |
| 307 | /* w/h are in decimillimeters */ |
| 308 | mon->widthmm = (extract_le16(x, 3) + 5) / 10; |
| 309 | mon->heightmm = (extract_le16(x, 5) + 5) / 10; |
| 310 | /* XXX pixel count, feature flags, gamma, aspect, color depth */ |
| 311 | break; |
| 312 | |
| 313 | case DID_TIMING_RANGE_LIMITS: |
| 314 | { |
| 315 | int n; |
| 316 | |
| 317 | mon->maxPixClock = max(mon->maxPixClock, extract_le24(x, 6) * 10); |
| 318 | |
| 319 | n = mon->nHsync++; |
| 320 | if (n < MAX_HSYNC) { |
| 321 | mon->hsync[n].lo = x[9]; |
| 322 | mon->hsync[n].hi = x[10]; |
| 323 | } |
| 324 | else { |
| 325 | n = MAX_HSYNC; |
| 326 | } |
| 327 | n = mon->nVrefresh++; |
| 328 | if (n < MAX_VREFRESH) { |
| 329 | mon->vrefresh[n].lo = x[13]; |
| 330 | mon->vrefresh[n].hi = x[14]; |
| 331 | } |
| 332 | else { |
| 333 | n = MAX_VREFRESH; |
| 334 | } |
| 335 | break; |
| 336 | } |
| 337 | |
| 338 | case DID_TIMING_1_DETAILED: |
| 339 | { |
| 340 | int i; |
| 341 | |
| 342 | for (i = 0; i < x[2]; i += 20) |
| 343 | didDetailedTiming1(scrnIndex, x + i + 3, mon); |
| 344 | break; |
| 345 | } |
| 346 | |
| 347 | case DID_TIMING_2_DETAILED: |
| 348 | { |
| 349 | int i; |
| 350 | |
| 351 | for (i = 0; i < x[2]; i += 11) |
| 352 | didDetailedTiming2(scrnIndex, x + i + 3, mon); |
| 353 | break; |
| 354 | } |
| 355 | |
| 356 | case DID_TIMING_3_SHORT: |
| 357 | { |
| 358 | int i; |
| 359 | |
| 360 | for (i = 0; i < x[2]; i += 3) |
| 361 | didShortTiming(scrnIndex, x + i + 3, mon); |
| 362 | break; |
| 363 | } |
| 364 | |
| 365 | case DID_TIMING_4_DMT: |
| 366 | { |
| 367 | int i; |
| 368 | |
| 369 | for (i = 0; i < x[2]; i++) |
| 370 | didDMTTiming(scrnIndex, x + i + 3, mon); |
| 371 | break; |
| 372 | } |
| 373 | |
| 374 | case DID_TIMING_VESA: |
| 375 | didVesaTiming(scrnIndex, x, mon); |
| 376 | break; |
| 377 | |
| 378 | /* XXX pixel format, ar, orientation, subpixel, dot pitch, bit depth */ |
| 379 | case DID_DISPLAY_DEVICE: |
| 380 | |
| 381 | /* XXX interface, links, color encoding, ss, drm */ |
| 382 | case DID_DISPLAY_INTERFACE: |
| 383 | |
| 384 | /* XXX stereo */ |
| 385 | case DID_STEREO: |
| 386 | |
| 387 | /* nothing interesting in these */ |
| 388 | case DID_COLOR_INFO: |
| 389 | case DID_PRODUCT_SERIAL: |
| 390 | case DID_ASCII_STRING: |
| 391 | case DID_POWER_SEQUENCING: |
| 392 | case DID_TRANSFER_INFO: |
| 393 | case DID_VENDOR: |
| 394 | break; |
| 395 | |
| 396 | /* warn about anything else */ |
| 397 | default: |
| 398 | xf86DrvMsg(scrnIndex, X_WARNING, |
| 399 | "Unknown DisplayID block type %hx\n", x[0]); |
| 400 | break; |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | static void |
| 405 | forEachDisplayIDBlock(int scrnIndex, unsigned char *did, did_proc proc, |
| 406 | void *closure) |
| 407 | { |
| 408 | int num_extensions = did[3]; |
| 409 | int section_size = did[1]; |
| 410 | unsigned char *block; |
| 411 | |
| 412 | do { |
| 413 | if ((did[0] & 0xf0) != 0x10) /* not 1.x, abort */ |
| 414 | return; |
| 415 | /* XXX also, checksum */ |
| 416 | |
| 417 | block = did + 4; |
| 418 | |
| 419 | while (section_size > 0) { |
| 420 | int block_size = (block[2] + 2); |
| 421 | |
| 422 | proc(scrnIndex, block, closure); |
| 423 | |
| 424 | section_size -= block_size; |
| 425 | block += block_size; |
| 426 | } |
| 427 | |
| 428 | did += (did[1] + 5); |
| 429 | } while (num_extensions--); |
| 430 | } |
| 431 | |
| 432 | /* |
| 433 | * Fill out MonPtr with xf86MonPtr information. |
| 434 | */ |
| 435 | void |
| 436 | xf86DisplayIDMonitorSet(int scrnIndex, MonPtr mon, xf86MonPtr DDC) |
| 437 | { |
| 438 | if (!mon || !DDC) |
| 439 | return; |
| 440 | |
| 441 | mon->DDC = DDC; |
| 442 | |
| 443 | forEachDisplayIDBlock(scrnIndex, DDC->rawData, handleDisplayIDBlock, mon); |
| 444 | } |