1 /* Authors: 2 Mark Watson 2000, 3 Rudolf Cornelissen 1/2003-12/2003 4 5 Thanx to Petr Vandrovec for writing matroxfb. 6 */ 7 8 #define MODULE_BIT 0x00100000 9 10 #include "mga_std.h" 11 12 typedef struct { 13 uint32 h_total; 14 uint32 h_display; 15 uint32 h_sync_length; 16 uint32 front_porch; 17 uint32 back_porch; 18 uint32 color_burst; 19 uint32 v_total; 20 float chroma_subcarrier; 21 } gx50_maven_timing; 22 23 //fixme: try to implement 'fast' and 'slow' settings for all modes, 24 // so buffer duplication or skipping won't be neccesary for realtime video. 25 //fixme: try to setup the CRTC2 in interlaced mode for the video modes on <= G400MAX cards. 26 27 /* find 'exact' valid video PLL setting */ 28 status_t g100_g400max_maventv_vid_pll_find( 29 display_mode target, unsigned int * ht_new, unsigned int * ht_last_line, 30 uint8 * m_result, uint8 * n_result, uint8 * p_result) 31 { 32 int m = 0, n = 0, p = 0, m_max; 33 float diff, diff_smallest = 999999999; 34 int best[5], h_total_mod; 35 float fields_sec, f_vco; 36 /* We need to be exact, so work with clockperiods per field instead of with frequency. 37 * Make sure however we truncate these clocks to be integers! 38 * (The NTSC field frequency would otherwise prevent the 'whole number of clocks per field' 39 * check done in this routine later on...) */ 40 uint32 vco_clks_field, max_pclks_field, req_pclks_field; 41 /* We need this variable to be a float, because we need to be able to verify if this 42 * represents a whole number of clocks per field later on! */ 43 float calc_pclks_field; 44 45 LOG(2,("MAVENTV: searching for EXACT videoclock match\n")); 46 47 /* determine the max. reference-frequency postscaler setting for the current card */ 48 //fixme: check G100 and G200 m_max if exist and possible... 49 switch(si->ps.card_type) 50 { 51 case G100: 52 LOG(2,("MAVENTV: G100 restrictions apply\n")); 53 m_max = 32; 54 break; 55 case G200: 56 LOG(2,("MAVENTV: G200 restrictions apply\n")); 57 m_max = 32; 58 break; 59 default: 60 LOG(2,("MAVENTV: G400/G400MAX restrictions apply\n")); 61 m_max = 32; 62 break; 63 } 64 65 /* set number of fields per second to generate */ 66 if ((target.flags & TV_BITS) == TV_PAL) 67 fields_sec = 50.0; 68 else 69 fields_sec = 59.94; 70 71 /* determine the max. pixelclock for the current videomode */ 72 switch (target.space) 73 { 74 case B_RGB16_LITTLE: 75 max_pclks_field = (si->ps.max_dac2_clock_16 * 1000000) / fields_sec; 76 break; 77 case B_RGB32_LITTLE: 78 max_pclks_field = (si->ps.max_dac2_clock_32 * 1000000) / fields_sec; 79 break; 80 default: 81 /* use fail-safe value */ 82 max_pclks_field = (si->ps.max_dac2_clock_32 * 1000000) / fields_sec; 83 break; 84 } 85 /* if some dualhead mode is active, an extra restriction might apply */ 86 if ((target.flags & DUALHEAD_BITS) && (target.space == B_RGB32_LITTLE)) 87 max_pclks_field = (si->ps.max_dac2_clock_32dh * 1000000) / fields_sec; 88 89 /* Checkout all possible Htotal settings within the current granularity step 90 * of CRTC2 to get a real close videoclock match! 91 * (The MAVEN apparantly has a granularity of 1 pixel, while CRTC2 has 8 pixels) */ 92 for (h_total_mod = 0; h_total_mod < 8; h_total_mod++) 93 { 94 LOG(2,("MAVENTV: trying h_total modification of +%d...\n", h_total_mod)); 95 96 /* Calculate videoclock to be a bit to high so we can compensate for an exact 97 * match via h_total_lastline.. */ 98 *ht_new = target.timing.h_total + h_total_mod + 2; 99 100 /* Make sure the requested pixelclock is within the PLL's operational limits */ 101 /* lower limit is min_video_vco divided by highest postscaler-factor */ 102 req_pclks_field = *ht_new * target.timing.v_total; 103 if (req_pclks_field < (((si->ps.min_video_vco * 1000000) / fields_sec) / 8.0)) 104 { 105 req_pclks_field = (((si->ps.min_video_vco * 1000000) / fields_sec) / 8.0); 106 LOG(4,("MAVENTV: WARNING, clamping at lowest possible videoclock\n")); 107 } 108 /* upper limit is given by pins in combination with current active mode */ 109 if (req_pclks_field > max_pclks_field) 110 { 111 req_pclks_field = max_pclks_field; 112 LOG(4,("MAVENTV: WARNING, clamping at highest possible videoclock\n")); 113 } 114 115 /* iterate through all valid PLL postscaler settings */ 116 for (p=0x01; p < 0x10; p = p<<1) 117 { 118 /* calc the needed number of VCO clocks per field for this postscaler setting */ 119 vco_clks_field = req_pclks_field * p; 120 121 /* check if this is within range of the VCO specs */ 122 if ((vco_clks_field >= ((si->ps.min_video_vco * 1000000) / fields_sec)) && 123 (vco_clks_field <= ((si->ps.max_video_vco * 1000000) / fields_sec))) 124 { 125 /* iterate trough all valid reference-frequency postscaler settings */ 126 for (m = 2; m <= m_max; m++) 127 { 128 /* calculate VCO postscaler setting for current setup.. */ 129 n = (int)(((vco_clks_field * m) / ((si->ps.f_ref * 1000000) / fields_sec)) + 0.5); 130 /* ..and check for validity */ 131 if ((n < 8) || (n > 128)) continue; 132 133 /* special TVmode stuff starts here (rest is in fact standard): */ 134 /* calculate number of videoclocks per field */ 135 calc_pclks_field = 136 (((uint32)((si->ps.f_ref * 1000000) / fields_sec)) * n) / ((float)(m * p)); 137 138 /* we need a whole number of clocks per field, otherwise it won't work correctly. 139 * (TVout will flicker, green fields will occur) */ 140 if (calc_pclks_field != (uint32)calc_pclks_field) continue; 141 142 /* check if we have the min. needed number of clocks per field for a sync lock */ 143 if (calc_pclks_field < ((*ht_new * (target.timing.v_total - 1)) + 2)) continue; 144 145 /* calc number of clocks we have for the last field line */ 146 *ht_last_line = calc_pclks_field - (*ht_new * (target.timing.v_total - 1)); 147 148 /* check if we haven't got too much clocks in the last field line for a sync lock */ 149 if (*ht_last_line > *ht_new) continue; 150 151 /* we have a match! */ 152 /* calculate the difference between a full line and the last line */ 153 diff = *ht_new - *ht_last_line; 154 155 /* if this last_line comes closer to a full line than earlier 'hits' then use it */ 156 if (diff < diff_smallest) 157 { 158 /* log results */ 159 if (diff_smallest == 999999999) 160 LOG(2,("MAVENTV: MATCH, ")); 161 else 162 LOG(2,("MAVENTV: better MATCH,")); 163 f_vco = (si->ps.f_ref / m) * n; 164 LOG(2,("found vid VCO freq %fMhz, pixclk %fMhz\n", f_vco, (f_vco / p))); 165 LOG(2,("MAVENTV: mnp(ex. filter) 0x%02x 0x%02x 0x%02x, h_total %d, ht_lastline %d\n", 166 (m - 1), (n - 1), (p - 1), (*ht_new - 2), (*ht_last_line - 2))); 167 168 /* remember this best match */ 169 diff_smallest = diff; 170 best[0] = m; 171 best[1] = n; 172 best[2] = p; 173 /* h_total to use for this setting: 174 * exclude the 'calculate clock a bit too high' trick */ 175 best[3] = *ht_new - 2; 176 /* ht_last_line to use for this setting: 177 * exclude the 'calculate clock a bit too high' trick */ 178 best[4] = *ht_last_line - 2; 179 } 180 } 181 } 182 } 183 } 184 LOG(2,("MAVENTV: search completed.\n")); 185 186 /* setup the scalers programming values for found optimum setting */ 187 m = best[0] - 1; 188 n = best[1] - 1; 189 p = best[2] - 1; 190 191 /* if no match was found set fixed PLL frequency so we have something valid at least */ 192 if (diff_smallest == 999999999) 193 { 194 LOG(4,("MAVENTV: WARNING, no MATCH found!\n")); 195 196 if (si->ps.f_ref == 27.000) 197 { 198 /* set 13.5Mhz */ 199 m = 0x03; 200 n = 0x07; 201 p = 0x03; 202 } 203 else 204 { 205 /* set 14.31818Mhz */ 206 m = 0x01; 207 n = 0x07; 208 p = 0x03; 209 } 210 best[3] = target.timing.h_total; 211 best[4] = target.timing.h_total; 212 } 213 214 /* calc the needed PLL loopbackfilter setting belonging to current VCO speed */ 215 f_vco = (si->ps.f_ref / (m + 1)) * (n + 1); 216 LOG(2,("MAVENTV: using vid VCO frequency %fMhz\n", f_vco)); 217 218 switch(si->ps.card_type) 219 { 220 case G100: 221 case G200: 222 for(;;) 223 { 224 if (f_vco >= 180) {p |= (0x03 << 3); break;}; 225 if (f_vco >= 140) {p |= (0x02 << 3); break;}; 226 if (f_vco >= 100) {p |= (0x01 << 3); break;}; 227 break; 228 } 229 break; 230 default: 231 for(;;) 232 { 233 if (f_vco >= 240) {p |= (0x03 << 3); break;}; 234 if (f_vco >= 170) {p |= (0x02 << 3); break;}; 235 if (f_vco >= 110) {p |= (0x01 << 3); break;}; 236 break; 237 } 238 break; 239 } 240 241 /* return results */ 242 *m_result = m; 243 *n_result = n; 244 *p_result = p; 245 *ht_new = best[3]; 246 *ht_last_line = best[4]; 247 248 /* display the found pixelclock values */ 249 LOG(2,("MAVENTV: vid PLL check: got %fMHz, mnp 0x%02x 0x%02x 0x%02x\n", 250 (f_vco / ((p & 0x07) + 1)), m, n, p)); 251 LOG(2,("MAVENTV: new h_total %d, ht_lastline %d\n", *ht_new, *ht_last_line)); 252 253 /* return status */ 254 if (diff_smallest == 999999999) return B_ERROR; 255 return B_OK; 256 } 257 258 /* Notes about timing: 259 * Note: 260 * all horizontal timing is measured in pixelclock periods; 261 * all? vertical timing is measured in field? lines. */ 262 263 /* Note: 264 * <= G400MAX cards have a fixed 27Mhz(?) clock for TV timing register values, 265 * while on G450/G550 these need to be calculated based on the video pixelclock. */ 266 267 268 /* Notes about signal strengths: 269 * Note: 270 * G400 and earlier cards have a fixed reference voltage of +2.6 Volt; 271 * G450 and G550 cards MAVEN DACs have a switchable ref voltage of +1.5/+2.0 Volt. 272 * 273 * This voltage is used to feed the videosignals: 274 * - Hsync pulse level; 275 * - Lowest active video output level; 276 * - Highest active video output level. 277 * These actual voltages are set via 10bit DACs. 278 * 279 * G450/G550: 280 * The color burst amplitude videosignal is fed by 80% of the above mentioned 281 * ref. voltage, and is set via an 8bit DAC. 282 * On G400 and earlier cards the ref. voltage is different, and also differs 283 * for PAL and NTSC mode. */ 284 285 /* Note: 286 * Increasing the distance between the highest and lowest active video output 287 * level increases contrast; decreasing it decreases contrast. */ 288 289 /* Note: 290 * Increasing both the highest and lowest active video output level with the 291 * same amount increases brightness; decreasing it decreases brightness. */ 292 293 /* Note: 294 * Increasing the Hsync pulse level increases the black level, so decreases 295 * brightness and contrast. */ 296 297 /* Preset maven PAL output (625lines, 50Hz mode) */ 298 static void gxx0_maventv_PAL_init(uint8* buffer) 299 { 300 uint16 value; 301 302 /* Chroma subcarrier divider */ 303 buffer[0x00] = 0x2A; 304 buffer[0x01] = 0x09; 305 buffer[0x02] = 0x8A; 306 buffer[0x03] = 0xCB; 307 308 buffer[0x04] = 0x00; 309 buffer[0x05] = 0x00; 310 buffer[0x06] = 0xF9; 311 buffer[0x07] = 0x00; 312 /* Hsync pulse length */ 313 buffer[0x08] = 0x7E; 314 /* color burst length */ 315 buffer[0x09] = 0x44; 316 /* back porch length */ 317 buffer[0x0a] = 0x9C; 318 319 /* color burst amplitude */ 320 if (si->ps.card_type <= G400MAX) 321 { 322 buffer[0x0b] = 0x3e; 323 } 324 else 325 { 326 buffer[0x0b] = 0x48; 327 } 328 329 buffer[0x0c] = 0x21; 330 buffer[0x0d] = 0x00; 331 332 if (si->ps.card_type <= G400MAX) 333 { 334 /* Lowest active video output level. 335 * Warning: make sure this stays above (or equals) the sync pulse level! */ 336 value = 0x0ea; 337 buffer[0x0e] = ((value >> 2) & 0xff); 338 buffer[0x0f] = (value & 0x03); 339 /* horizontal sync pulse level */ 340 buffer[0x10] = ((value >> 2) & 0xff); 341 buffer[0x11] = (value & 0x03); 342 } 343 else 344 { 345 /* Lowest active video output level. 346 * Warning: make sure this stays above (or equals) the sync pulse level! */ 347 value = 0x130; 348 buffer[0x0e] = ((value >> 2) & 0xff); 349 buffer[0x0f] = (value & 0x03); 350 /* horizontal sync pulse level */ 351 buffer[0x10] = ((value >> 2) & 0xff); 352 buffer[0x11] = (value & 0x03); 353 } 354 355 buffer[0x12] = 0x1A; 356 buffer[0x13] = 0x2A; 357 358 /* functional unit */ 359 buffer[0x14] = 0x1C; 360 buffer[0x15] = 0x3D; 361 buffer[0x16] = 0x14; 362 363 /* vertical total */ //(=625) 364 /* b9-2 */ 365 buffer[0x17] = 0x9C; 366 /* b1-0 in b1-0 */ 367 buffer[0x18] = 0x01; 368 369 buffer[0x19] = 0x00; 370 buffer[0x1a] = 0xFE; 371 buffer[0x1b] = 0x7E; 372 buffer[0x1c] = 0x60; 373 buffer[0x1d] = 0x05; 374 375 /* Highest active video output level. 376 * Warning: make sure this stays above the lowest active video output level! */ 377 if (si->ps.card_type <= G400MAX) 378 { 379 value = 0x24f; 380 buffer[0x1e] = ((value >> 2) & 0xff); 381 buffer[0x1f] = (value & 0x03); 382 } 383 else 384 { 385 value = 0x300; 386 buffer[0x1e] = ((value >> 2) & 0xff); 387 buffer[0x1f] = (value & 0x03); 388 } 389 390 /* saturation (field?) #1 */ 391 if (si->ps.card_type <= G400MAX) 392 buffer[0x20] = 0x72; 393 else 394 buffer[0x20] = 0xA5; 395 396 buffer[0x21] = 0x07; 397 398 /* saturation (field?) #2 */ 399 if (si->ps.card_type <= G400MAX) 400 buffer[0x22] = 0x72; 401 else 402 buffer[0x22] = 0xA5; 403 404 buffer[0x23] = 0x00; 405 buffer[0x24] = 0x00; 406 /* hue? */ 407 buffer[0x25] = 0x00; 408 409 buffer[0x26] = 0x08; 410 buffer[0x27] = 0x04; 411 buffer[0x28] = 0x00; 412 buffer[0x29] = 0x1A; 413 414 /* functional unit */ 415 buffer[0x2a] = 0x55; 416 buffer[0x2b] = 0x01; 417 418 /* front porch length */ 419 buffer[0x2c] = 0x26; 420 421 /* functional unit */ 422 buffer[0x2d] = 0x07; 423 buffer[0x2e] = 0x7E; 424 425 /* functional unit */ 426 buffer[0x2f] = 0x02; 427 buffer[0x30] = 0x54; 428 429 /* horizontal visible */ 430 value = 0x580; 431 buffer[0x31] = ((value >> 3) & 0xff); 432 buffer[0x32] = (value & 0x07); 433 434 /* upper blanking (in field lines) */ 435 buffer[0x33] = 0x14; //=((v_total - v_sync_end)/2) -1 436 437 buffer[0x34] = 0x49; 438 buffer[0x35] = 0x00; 439 buffer[0x36] = 0x00; 440 buffer[0x37] = 0xA3; 441 buffer[0x38] = 0xC8; 442 buffer[0x39] = 0x22; 443 buffer[0x3a] = 0x02; 444 buffer[0x3b] = 0x22; 445 446 /* functional unit */ 447 buffer[0x3c] = 0x3F; 448 buffer[0x3d] = 0x03; 449 } 450 451 /* Preset maven NTSC output (525lines, 59.94Hz mode) */ 452 static void gxx0_maventv_NTSC_init(uint8* buffer) 453 { 454 uint16 value; 455 456 /* Chroma subcarrier frequency */ 457 buffer[0x00] = 0x21; 458 buffer[0x01] = 0xF0; 459 buffer[0x02] = 0x7C; 460 buffer[0x03] = 0x1F; 461 462 buffer[0x04] = 0x00; 463 buffer[0x05] = 0x00;//b1 = ON enables colorbar testimage 464 buffer[0x06] = 0xF9;//b0 = ON enables MAVEN TV output 465 buffer[0x07] = 0x00;//influences the colorburst signal amplitude somehow 466 467 /* Hsync pulse length */ 468 buffer[0x08] = 0x7E; 469 /* color burst length */ 470 buffer[0x09] = 0x43; 471 /* back porch length */ 472 buffer[0x0a] = 0x7E; 473 474 /* color burst amplitude */ 475 if (si->ps.card_type <= G400MAX) 476 { 477 buffer[0x0b] = 0x46; 478 } 479 else 480 { 481 buffer[0x0b] = 0x48; 482 } 483 484 buffer[0x0c] = 0x00; 485 buffer[0x0d] = 0x00; 486 487 if (si->ps.card_type <= G400MAX) 488 { 489 /* Lowest active video output level. 490 * Warning: make sure this stays above (or equals) the sync pulse level! */ 491 value = 0x0ea; 492 buffer[0x0e] = ((value >> 2) & 0xff); 493 buffer[0x0f] = (value & 0x03); 494 /* horizontal sync pulse level */ 495 buffer[0x10] = ((value >> 2) & 0xff); 496 buffer[0x11] = (value & 0x03); 497 } 498 else 499 { 500 /* Lowest active video output level. 501 * Warning: make sure this stays above (or equals) the sync pulse level! */ 502 value = 0x130; 503 buffer[0x0e] = ((value >> 2) & 0xff); 504 buffer[0x0f] = (value & 0x03); 505 /* horizontal sync pulse level */ 506 buffer[0x10] = ((value >> 2) & 0xff); 507 buffer[0x11] = (value & 0x03); 508 } 509 510 buffer[0x12] = 0x17; 511 buffer[0x13] = 0x21; 512 513 /* functional unit */ 514 buffer[0x14] = 0x1B; 515 buffer[0x15] = 0x1B; 516 buffer[0x16] = 0x24; 517 518 /* vertical total */ 519 /* b9-2 */ 520 buffer[0x17] = 0x83; 521 /* b1-0 in b1-0 */ 522 buffer[0x18] = 0x01; 523 524 buffer[0x19] = 0x00;//mv register? 525 buffer[0x1a] = 0x0F; 526 buffer[0x1b] = 0x0F; 527 buffer[0x1c] = 0x60; 528 buffer[0x1d] = 0x05; 529 530 /* Highest active video output level. 531 * Warning: make sure this stays above the lowest active video output level! */ 532 if (si->ps.card_type <= G400MAX) 533 { 534 value = 0x24f; 535 buffer[0x1e] = ((value >> 2) & 0xff); 536 buffer[0x1f] = (value & 0x03); 537 } 538 else 539 { 540 value = 0x300; 541 buffer[0x1e] = ((value >> 2) & 0xff); 542 buffer[0x1f] = (value & 0x03); 543 } 544 545 /* color saturation #1 (Y-B ?) */ 546 if (si->ps.card_type <= G400MAX) 547 buffer[0x20] = 0x5F; 548 else 549 buffer[0x20] = 0x9C; 550 551 buffer[0x21] = 0x04; 552 553 /* color saturation #2 (Y-R ?) */ 554 if (si->ps.card_type <= G400MAX) 555 buffer[0x22] = 0x5F; 556 else 557 buffer[0x22] = 0x9C; 558 559 buffer[0x23] = 0x01; 560 buffer[0x24] = 0x02; 561 562 /* hue: preset at 0 degrees */ 563 buffer[0x25] = 0x00; 564 565 buffer[0x26] = 0x0A; 566 buffer[0x27] = 0x05;//sync stuff 567 buffer[0x28] = 0x00; 568 buffer[0x29] = 0x10;//field line-length stuff 569 570 /* functional unit */ 571 buffer[0x2a] = 0xFF; 572 buffer[0x2b] = 0x03; 573 574 /* front porch length */ 575 buffer[0x2c] = 0x24; 576 577 /* functional unit */ 578 buffer[0x2d] = 0x0F; 579 buffer[0x2e] = 0x78; 580 581 /* functional unit */ 582 buffer[0x2f] = 0x00; 583 buffer[0x30] = 0x00; 584 585 /* horizontal visible */ 586 /* b10-3 */ 587 buffer[0x31] = 0xB2; 588 /* b2-0 in b2-0 */ 589 buffer[0x32] = 0x04; 590 591 /* upper blanking (in field lines) */ 592 buffer[0x33] = 0x14; 593 594 buffer[0x34] = 0x02;//colorphase or so stuff. 595 buffer[0x35] = 0x00; 596 buffer[0x36] = 0x00; 597 buffer[0x37] = 0xA3; 598 buffer[0x38] = 0xC8; 599 buffer[0x39] = 0x15; 600 buffer[0x3a] = 0x05; 601 buffer[0x3b] = 0x3B; 602 603 /* functional unit */ 604 buffer[0x3c] = 0x3C; 605 buffer[0x3d] = 0x00; 606 } 607 608 static void gx50_maventv_PAL_timing(gx50_maven_timing *m_timing) 609 { 610 /* values are given in picoseconds */ 611 m_timing->h_total = 64000000; 612 /* the sum of the signal duration below should match h_total! */ 613 m_timing->h_display = 52148148; 614 m_timing->h_sync_length = 4666667; 615 m_timing->front_porch = 1407407; 616 m_timing->back_porch = 5777778; 617 /* colorburst is 'superimposed' on the above timing */ 618 m_timing->color_burst = 2518518; 619 /* number of lines per frame */ 620 m_timing->v_total = 625; 621 /* color carrier frequency in Mhz */ 622 m_timing->chroma_subcarrier = 4.43361875; 623 } 624 625 static void gx50_maventv_NTSC_timing(gx50_maven_timing *m_timing) 626 { 627 /* values are given in picoseconds */ 628 m_timing->h_total = 63555556; 629 /* the sum of the signal duration below should match h_total! */ 630 m_timing->h_display = 52888889; 631 m_timing->h_sync_length = 4666667; 632 m_timing->front_porch = 1333333; 633 m_timing->back_porch = 4666667; 634 /* colorburst is 'superimposed' on the above timing */ 635 m_timing->color_burst = 2418418; 636 /* number of lines per frame */ 637 m_timing->v_total = 525; 638 /* color carrier frequency in Mhz */ 639 m_timing->chroma_subcarrier = 3.579545454; 640 } 641 642 int maventv_init(display_mode target) 643 { 644 uint8 val; 645 uint8 m_result, n_result, p_result; 646 unsigned int ht_new, ht_last_line; 647 float calc_pclk; 648 /* use a display_mode copy because we might tune it for TVout compatibility */ 649 display_mode tv_target = target; 650 /* used as buffer for TVout signal to generate */ 651 uint8 maventv_regs[64]; 652 /* used in G450/G550 to calculate TVout signal timing dependant on pixelclock; 653 * <= G400MAX use fixed settings because base-clock here is the fixed crystal 654 * frequency. */ 655 //fixme: if <=G400 cards with MAVEN and crystal of 14.31818Mhz exist, modify!?! 656 gx50_maven_timing m_timing; 657 658 /* preset new TVout mode */ 659 if ((tv_target.flags & TV_BITS) == TV_PAL) 660 { 661 LOG(4, ("MAVENTV: PAL TVout\n")); 662 gxx0_maventv_PAL_init(maventv_regs); 663 gx50_maventv_PAL_timing(&m_timing); 664 } 665 else 666 { 667 LOG(4, ("MAVENTV: NTSC TVout\n")); 668 gxx0_maventv_NTSC_init(maventv_regs); 669 gx50_maventv_NTSC_timing(&m_timing); 670 } 671 672 /* enter mode-program mode */ 673 if (si->ps.card_type <= G400MAX) MAVW(PGM, 0x01); 674 else 675 { 676 DXIW(TVO_IDX, MGAMAV_PGM); 677 DXIW(TVO_DATA, 0x01); 678 } 679 680 /* tune new TVout mode */ 681 if (si->ps.card_type <= G400MAX) 682 { 683 /* setup TV-mode 'copy' of CRTC2, setup PLL, inputs, outputs and sync-locks */ 684 MAVW(MONSET, 0x00); 685 MAVW(MONEN, 0xA2); 686 687 /* xmiscctrl */ 688 //unknown regs: 689 MAVWW(WREG_0X8E_L, 0x1EFF); 690 MAVW(BREG_0XC6, 0x01); 691 692 MAVW(LOCK, 0x01); 693 MAVW(OUTMODE, 0x08); 694 695 /* set high contrast/brightness range for TVout */ 696 /* Note: 697 * b4-5 have contrast/brightness function during TVout, while these bits 698 * are used to set sync polarity in a serial fashion during monitor modes. 699 * Setting both these bits here will 'increase' the sync polarity offset 700 * by one! */ 701 MAVW(LUMA, 0x78); 702 /* We just made a sync polarity programming step for monitor modes, so: 703 * note the offset from 'reset position' we will have now */ 704 si->maven_syncpol_offset += 1; 705 if (si->maven_syncpol_offset > 3) si->maven_syncpol_offset = 0; 706 707 //unknown regs: 708 MAVW(STABLE, 0x02); 709 MAVW(MONEN, 0xB3); 710 711 /* modify mode to center and size correctly on TV */ 712 { 713 int diff; 714 float uscan_fact; 715 bool tweak = false; /* needed for NTSC VCD mode */ 716 717 if (!(tv_target.flags & TV_VIDEO)) /* Desktop modes */ 718 { 719 LOG(4,("MAVENTV: setting underscanning ('downscaled') desktop mode\n")); 720 721 /* adapt mode to underscan correctly */ 722 if ((tv_target.timing.h_display < 704) && ((tv_target.flags & TV_BITS) == TV_PAL)) 723 { 724 /* can't be higher because of scaling limitations in MAVEN! */ 725 uscan_fact = 0.77; 726 } 727 else 728 { 729 /* optimal setting for desktop modes.. */ 730 uscan_fact = 0.80; 731 } 732 /* horizontal */ 733 tv_target.timing.h_total = (tv_target.timing.h_display / uscan_fact); 734 /* adhere to CRTC constraints */ 735 tv_target.timing.h_total &= ~0x0007; 736 /* vertical */ 737 tv_target.timing.v_total = (tv_target.timing.v_display / uscan_fact); 738 739 /* now do vertical centering */ 740 if ((tv_target.flags & TV_BITS) == TV_PAL) 741 { 742 diff = tv_target.timing.v_total - tv_target.timing.v_display; 743 tv_target.timing.v_sync_start = tv_target.timing.v_display + ((diff * 7) / 20); 744 /* sync all the way 'to the end' to prevent vertical overscanning 745 * rubbish on top of screen due to MAVEN hardware design fault */ 746 tv_target.timing.v_sync_end = tv_target.timing.v_total; 747 } 748 else 749 { 750 diff = tv_target.timing.v_total - tv_target.timing.v_display; 751 tv_target.timing.v_sync_start = tv_target.timing.v_display + ((diff * 5) / 20); 752 /* sync all the way 'to the end' to prevent vertical overscanning 753 * rubbish on top of screen due to MAVEN hardware design fault */ 754 tv_target.timing.v_sync_end = tv_target.timing.v_total; 755 } 756 } 757 else /* Video modes */ 758 { 759 uint16 mode = 760 (((tv_target.flags & TV_BITS) << (14 - 9)) | tv_target.timing.h_display); 761 762 LOG(4,("MAVENTV: setting overscanning ('unscaled') video mode\n")); 763 764 /* adapt standard modes to be displayed 1:1 */ 765 switch (mode) 766 { 767 case ((TV_NTSC << (14 - 9)) | 640): /* NTSC VCD mode */ 768 /* horizontal: adhere to CRTC granularity (8) */ 769 /* Note: h_total = 704 has no PLL match! */ 770 tv_target.timing.h_total = 696; 771 /* because this 'low' horizontal resolution cannot be scaled up 772 * for overscanning use (MAVEN restriction) we need to do some 773 * tweaking to get a mode we can work with that still has the 774 * correct aspect ratio. 775 * This mode has just a little bit horizontal overscanning. */ 776 tweak = true; 777 break; 778 case ((TV_NTSC << (14 - 9)) | 720): /* NTSC DVD mode */ 779 /* horizontal: adhere to CRTC granularity (8) */ 780 tv_target.timing.h_total = 784; 781 break; 782 case ((TV_PAL << (14 - 9)) | 768): /* PAL VCD mode */ 783 /* horizontal: adhere to CRTC granularity (8) */ 784 tv_target.timing.h_total = 832; 785 break; 786 case ((TV_PAL << (14 - 9)) | 720): /* PAL DVD mode */ 787 /* horizontal: adhere to CRTC granularity (8) */ 788 tv_target.timing.h_total = 784; 789 break; 790 default: 791 /* non-standard mode: just hope for he best. */ 792 break; 793 } 794 795 /* now do vertical centering and clipping */ 796 if ((tv_target.flags & TV_BITS) == TV_PAL) 797 { 798 /* defined by the PAL standard */ 799 tv_target.timing.v_total = m_timing.v_total; 800 /* we need to center the image on TV vertically. 801 * note that 576 is the maximum supported resolution for the PAL standard, 802 * this is already overscanning by approx 8-10% */ 803 diff = 576 - tv_target.timing.v_display; 804 /* if we cannot display the current vertical resolution fully, clip it */ 805 if (diff < 0) 806 { 807 tv_target.timing.v_display = 576; 808 diff = 0; 809 } 810 /* now center the image on TV */ 811 tv_target.timing.v_sync_start = tv_target.timing.v_display + (diff / 2); 812 /* sync all the way 'to the end' to prevent vertical overscanning 813 * rubbish on top of screen due to MAVEN hardware design fault */ 814 /* note: probably invisible in these Video modes */ 815 tv_target.timing.v_sync_end = tv_target.timing.v_total; 816 } 817 else 818 { 819 /* defined by the NTSC standard */ 820 tv_target.timing.v_total = m_timing.v_total; 821 /* NTSC VCD mode needs to be scaled down vertically to get correct 822 * aspect ratio... */ 823 if (tweak) tv_target.timing.v_total += 32; 824 /* we need to center the image on TV vertically. 825 * note that 480 is the maximum supported resolution for the NTSC standard, 826 * this is already overscanning by approx 8-10% */ 827 diff = 480 - tv_target.timing.v_display; 828 /* if we cannot display the current vertical resolution fully, clip it */ 829 if (diff < 0) 830 { 831 tv_target.timing.v_display = 480; 832 diff = 0; 833 } 834 /* now center the image on TV */ 835 tv_target.timing.v_sync_start = tv_target.timing.v_display + (diff / 2); 836 /* ...NTSC VCD mode needs to be moved up to center the tweaked mode 837 * correcty... */ 838 if (tweak) tv_target.timing.v_sync_start += 9; 839 /* sync all the way 'to the end' to prevent vertical overscanning 840 * rubbish on top of screen due to MAVEN hardware design fault */ 841 /* note: might be visible in the NTSC VCD Video mode */ 842 tv_target.timing.v_sync_end = tv_target.timing.v_total; 843 } 844 } 845 846 /* finally do horizontal centering */ 847 if ((tv_target.flags & TV_BITS) == TV_PAL) 848 { 849 diff = tv_target.timing.h_total - tv_target.timing.h_display; 850 tv_target.timing.h_sync_start = tv_target.timing.h_display - 0 + (diff / 2); 851 /* keep adhering to CRTC constraints */ 852 tv_target.timing.h_sync_start &= ~0x0007; 853 tv_target.timing.h_sync_end = tv_target.timing.h_sync_start + 16; 854 } 855 else 856 { 857 diff = tv_target.timing.h_total - tv_target.timing.h_display; 858 tv_target.timing.h_sync_start = tv_target.timing.h_display - 16 + (diff / 2); 859 /* ...and finally the NTSC VCD mode needs to be moved to the right to 860 * center the tweaked mode correctly. */ 861 if (tweak) tv_target.timing.h_sync_start -= 16; 862 /* keep adhering to CRTC constraints */ 863 tv_target.timing.h_sync_start &= ~0x0007; 864 tv_target.timing.h_sync_end = tv_target.timing.h_sync_start + 16; 865 } 866 } 867 868 /* tune crtc delay */ 869 if ((tv_target.timing.h_display >= 1000) && (((tv_target.flags & TV_BITS) != TV_PAL))) 870 { 871 si->crtc_delay += 1; 872 } 873 else 874 { 875 si->crtc_delay -= 3; 876 } 877 878 /* setup video PLL */ 879 g100_g400max_maventv_vid_pll_find( 880 tv_target, &ht_new, &ht_last_line, &m_result, &n_result, &p_result); 881 MAVW(PIXPLLM, m_result); 882 MAVW(PIXPLLN, n_result); 883 MAVW(PIXPLLP, (p_result | 0x80)); 884 885 MAVW(MONSET, 0x20); 886 887 MAVW(TEST, 0x10); 888 889 /* htotal - 2 */ 890 MAVWW(HTOTALL, ht_new); 891 892 /* last line in field can have different length */ 893 /* hlen - 2 */ 894 MAVWW(LASTLINEL, ht_last_line); 895 896 /* horizontal vidrst pos: 0 <= vidrst pos <= htotal - 2 */ 897 MAVWW(HVIDRSTL, (ht_last_line - si->crtc_delay - 898 (tv_target.timing.h_sync_end - tv_target.timing.h_sync_start))); 899 //ORG (does the same but with limit checks but these limits should never occur!): 900 // slen = tv_target.timing.h_sync_end - tv_target.timing.h_sync_start; 901 // hcrt = tv_target.timing.h_total - slen - si->crtc_delay; 902 // if (ht_last_line < tv_target.timing.h_total) hcrt += ht_last_line; 903 // if (hcrt > tv_target.timing.h_total) hcrt -= tv_target.timing.h_total; 904 // if (hcrt + 2 > tv_target.timing.h_total) hcrt = 0; /* or issue warning? */ 905 // MAVWW(HVIDRSTL, hcrt); 906 907 /* who knows */ 908 MAVWW(HSYNCSTRL, 0x0004);//must be 4!! 909 910 /* hblanking end: 100% */ 911 MAVWW(HSYNCLENL, (tv_target.timing.h_total - tv_target.timing.h_sync_end)); 912 913 /* vertical line count - 1 */ 914 MAVWW(VTOTALL, (tv_target.timing.v_total - 1)); 915 916 /* vertical vidrst pos */ 917 MAVWW(VVIDRSTL, (tv_target.timing.v_total - 2)); 918 919 /* something end... [A6]+1..[A8] */ 920 MAVWW(VSYNCSTRL, 0x0001); 921 922 /* vblanking end: stop vblanking */ 923 MAVWW(VSYNCLENL, (tv_target.timing.v_sync_end - tv_target.timing.v_sync_start - 1)); 924 //org: no visible diff: 925 //MAVWW(VSYNCLENL, (tv_target.timing.v_total - tv_target.timing.v_sync_start - 1)); 926 927 /* something start... 0..[A4]-1 */ 928 MAVWW(VDISPLAYL, 0x0000); 929 //std setmode (no visible difference) 930 //MAVWW(VDISPLAYL, (tv_target.timing.v_total - 1)); 931 932 /* ... */ 933 MAVWW(WREG_0X98_L, 0x0000); 934 935 /* moves picture up/down and so on... */ 936 MAVWW(VSOMETHINGL, 0x0001); /* Fix this... 0..VTotal */ 937 938 { 939 uint32 h_display_tv; 940 uint8 h_scale_tv; 941 942 unsigned int ib_min_length; 943 unsigned int ib_length; 944 int index; 945 946 /* calc hor scale-back factor from input to output picture (in 1.7 format) 947 * the MAVEN has 736 pixels fixed total outputline length for TVout */ 948 h_scale_tv = (736 << 7) / tv_target.timing.h_total;//should be PLL corrected 949 LOG(4,("MAVENTV: horizontal scale-back factor is: %f\n", (h_scale_tv / 128.0))); 950 951 /* limit values to MAVEN capabilities (scale-back factor is 0.5-1.0) */ 952 if (h_scale_tv > 0x80) 953 { 954 h_scale_tv = 0x80; 955 LOG(4,("MAVENTV: limiting horizontal scale-back factor to: %f\n", (h_scale_tv / 128.0))); 956 } 957 if (h_scale_tv < 0x40) 958 { 959 h_scale_tv = 0x40; 960 LOG(4,("MAVENTV: limiting horizontal scale-back factor to: %f\n", (h_scale_tv / 128.0))); 961 } 962 /* make sure we get no round-off error artifacts on screen */ 963 h_scale_tv--; 964 965 /* calc difference in (wanted output picture width (excl. hsync_length)) and 966 * (fixed total output line length (=768)), 967 * based on input picture and scaling factor */ 968 /* (MAVEN trick (part 1) to get output picture width to fit into just 8 bits) */ 969 h_display_tv = ((768 - 1) << 7) - 970 (((tv_target.timing.h_total - tv_target.timing.h_sync_end) /* is left margin */ 971 + tv_target.timing.h_display - 8) 972 * h_scale_tv); 973 /* convert result from 25.7 to 32.0 format */ 974 h_display_tv = h_display_tv >> 7; 975 LOG(4,("MAVENTV: displaying output on %d picture pixels\n", 976 ((768 - 1) - h_display_tv))); 977 978 /* half result: MAVEN trick (part 2) 979 * (258 - 768 pixels, only even number per line is possible) */ 980 h_display_tv = h_display_tv >> 1; 981 /* limit value to register contraints */ 982 if (h_display_tv > 0xFF) h_display_tv = 0xFF; 983 MAVW(HSCALETV, h_scale_tv); 984 MAVW(HDISPLAYTV, h_display_tv); 985 986 987 /* calculate line inputbuffer length */ 988 /* It must be between (including): 989 * ((input picture left margin) + (input picture hor. resolution) + 4) 990 * AND 991 * (input picture total line length) (PLL corrected) */ 992 993 /* calculate minimal line input buffer length */ 994 ib_min_length = ((tv_target.timing.h_total - tv_target.timing.h_sync_end) + 995 tv_target.timing.h_display + 4); 996 997 /* calculate optimal line input buffer length (so top of picture is OK too) */ 998 /* The following formula applies: 999 * optimal buffer length = ((((0x78 * i) - R) / hor. scaling factor) + Q) 1000 * 1001 * where (in 4.8 format!) 1002 * R Qmin Qmax 1003 * 0x0E0 0x5AE 0x5BF 1004 * 0x100 0x5CF 0x5FF 1005 * 0x180 0x653 0x67F 1006 * 0x200 0x6F8 0x6FF 1007 */ 1008 index = 1; 1009 do 1010 { 1011 ib_length = ((((((0x7800 << 7) * index) - (0x100 << 7)) / h_scale_tv) + 0x05E7) >> 8); 1012 index++; 1013 } while (ib_length < ib_min_length); 1014 LOG(4,("MAVENTV: optimal line inputbuffer length: %d\n", ib_length)); 1015 1016 if (ib_length >= ht_new + 2) 1017 { 1018 ib_length = ib_min_length; 1019 LOG(4,("MAVENTV: limiting line inputbuffer length, setting minimal usable: %d\n", ib_length)); 1020 } 1021 MAVWW(HDISPLAYL, ib_length); 1022 } 1023 1024 { 1025 uint16 t_scale_tv; 1026 uint32 v_display_tv; 1027 1028 /* calc total scale-back factor from input to output picture */ 1029 { 1030 uint32 out_clocks; 1031 uint32 in_clocks; 1032 1033 //takes care of green stripes: 1034 /* calc output clocks per frame */ 1035 out_clocks = m_timing.v_total * (ht_new + 2); 1036 1037 /* calc input clocks per frame */ 1038 in_clocks = (tv_target.timing.v_total - 1) * (ht_new + 2) + ht_last_line + 2; 1039 1040 /* calc total scale-back factor from input to output picture in 1.15 format */ 1041 t_scale_tv = ((((uint64)out_clocks) << 15) / in_clocks); 1042 LOG(4,("MAVENTV: total scale-back factor is: %f\n", (t_scale_tv / 32768.0))); 1043 1044 /* min. scale-back factor is 1.0 for 1:1 output */ 1045 if (t_scale_tv > 0x8000) 1046 { 1047 t_scale_tv = 0x8000; 1048 LOG(4,("MAVENTV: limiting total scale-back factor to: %f\n", (t_scale_tv / 32768.0))); 1049 } 1050 } 1051 1052 /*calc output picture height based on input picture and scaling factor */ 1053 //warning: v_display was 'one' lower originally! 1054 v_display_tv = 1055 ((tv_target.timing.v_sync_end - tv_target.timing.v_sync_start) /* is sync length */ 1056 + (tv_target.timing.v_total - tv_target.timing.v_sync_end) /* is upper margin */ 1057 + tv_target.timing.v_display) 1058 * t_scale_tv; 1059 /* convert result from 17.15 to 32.0 format */ 1060 v_display_tv = (v_display_tv >> 15); 1061 LOG(4,("MAVENTV: displaying output on %d picture frame-lines\n", v_display_tv)); 1062 1063 /* half result, and compensate for internal register offset 1064 * (MAVEN trick to get it to fit into just 8 bits). 1065 * (allowed output frame height is 292 - 802 lines, only even numbers) */ 1066 v_display_tv = (v_display_tv >> 1) - 146; 1067 /* limit value to register contraints */ 1068 if (v_display_tv > 0xFF) v_display_tv = 0xFF; 1069 /* make sure we get no round-off error artifacts on screen */ 1070 t_scale_tv--; 1071 1072 MAVWW(TSCALETVL, t_scale_tv); 1073 MAVW(VDISPLAYTV, v_display_tv); 1074 } 1075 1076 MAVW(TEST, 0x00); 1077 1078 /* gamma correction registers */ 1079 MAVW(GAMMA1, 0x00); 1080 MAVW(GAMMA2, 0x00); 1081 MAVW(GAMMA3, 0x00); 1082 MAVW(GAMMA4, 0x1F); 1083 MAVW(GAMMA5, 0x10); 1084 MAVW(GAMMA6, 0x10); 1085 MAVW(GAMMA7, 0x10); 1086 MAVW(GAMMA8, 0x64); /* 100 */ 1087 MAVW(GAMMA9, 0xC8); /* 200 */ 1088 1089 /* set flickerfilter */ 1090 if (!(tv_target.flags & TV_VIDEO)) 1091 { 1092 /* Desktop modes (those are scaled): filter on to prevent artifacts */ 1093 MAVW(FFILTER, 0xa2); 1094 LOG(4,("MAVENTV: enabling flicker filter\n")); 1095 } 1096 else 1097 { 1098 /* Video modes (those are unscaled): filter off to increase sharpness */ 1099 //fixme? OFF is dependant on MAVEN version(?): MGA_TVO_B = $40, else $00. 1100 MAVW(FFILTER, 0x00); 1101 LOG(4,("MAVENTV: disabling flicker filter\n")); 1102 } 1103 1104 /* 0x10 or anything ored with it */ 1105 //fixme? linux uses 0x14... 1106 MAVW(TEST, (MAVR(TEST) & 0x10)); 1107 1108 /* output: SVideo/Composite */ 1109 MAVW(OUTMODE, 0x08); 1110 } 1111 else /* card_type is >= G450 */ 1112 { 1113 //fixme: setup an intermediate buffer if vertical res is different than settings below! 1114 //fixme: setup 2D or 3D engine to do screen_to_screen_scaled_filtered_blit between the buffers 1115 // during vertical retrace! 1116 if ((tv_target.flags & TV_BITS) == TV_PAL) 1117 { 1118 int diff; 1119 1120 /* defined by the PAL standard */ 1121 tv_target.timing.v_total = m_timing.v_total; 1122 /* we need to center the image on TV vertically. 1123 * note that 576 is the maximum supported resolution for the PAL standard, 1124 * this is already overscanning by approx 8-10% */ 1125 diff = 576 - tv_target.timing.v_display; 1126 /* if we cannot display the current vertical resolution fully, clip it */ 1127 if (diff < 0) 1128 { 1129 tv_target.timing.v_display = 576; 1130 diff = 0; 1131 } 1132 /* now center the image on TV by centering the vertical sync pulse */ 1133 tv_target.timing.v_sync_start = tv_target.timing.v_display + 1 + (diff / 2); 1134 tv_target.timing.v_sync_end = tv_target.timing.v_sync_start + 1; 1135 } 1136 else 1137 { 1138 int diff; 1139 1140 /* defined by the NTSC standard */ 1141 tv_target.timing.v_total = m_timing.v_total; 1142 /* we need to center the image on TV vertically. 1143 * note that 480 is the maximum supported resolution for the NTSC standard, 1144 * this is already overscanning by approx 8-10% */ 1145 diff = 480 - tv_target.timing.v_display; 1146 /* if we cannot display the current vertical resolution fully, clip it */ 1147 if (diff < 0) 1148 { 1149 tv_target.timing.v_display = 480; 1150 diff = 0; 1151 } 1152 /* now center the image on TV by centering the vertical sync pulse */ 1153 tv_target.timing.v_sync_start = tv_target.timing.v_display + 1 + (diff / 2); 1154 tv_target.timing.v_sync_end = tv_target.timing.v_sync_start + 1; 1155 } 1156 1157 /* setup video PLL for G450/G550: 1158 * this can be done in the normal way because the MAVEN works in slave mode! 1159 * NOTE: must be done before programming CRTC2, or interlaced startup may fail. */ 1160 1161 //fixme: make sure videoPLL is powered up: XPWRCTRL b1=1 1162 { 1163 uint16 front_porch, back_porch, h_sync_length, burst_length, h_total, h_display; 1164 uint32 chromasc; 1165 uint64 pix_period; 1166 uint16 h_total_wanted, leftover; 1167 1168 /* calculate tv_h_display in 'half pixelclocks' and adhere to MAVEN restrictions. 1169 * ('half pixelclocks' exist because the MAVEN uses them...) */ 1170 h_display = (((tv_target.timing.h_display << 1) + 3) & ~0x03); 1171 if (h_display > 2044) h_display = 2044; 1172 /* copy result to MAVEN TV mode */ 1173 maventv_regs[0x31] = (h_display >> 3); 1174 maventv_regs[0x32] = (h_display & 0x07); 1175 1176 /* calculate needed video pixelclock in kHz. 1177 * NOTE: 1178 * The clock calculated is based on MAVEN output, so each pixelclock period 1179 * is in fact a 'half pixelclock' period compared to monitor mode use. */ 1180 tv_target.timing.pixel_clock = 1181 ((((uint64)h_display) * 1000000000) / m_timing.h_display); 1182 1183 /* tune display_mode adhering to CRTC2 restrictions */ 1184 /* (truncate h_display to 'whole pixelclocks') */ 1185 tv_target.timing.h_display = ((h_display >> 1) & ~0x07); 1186 tv_target.timing.h_sync_start = tv_target.timing.h_display + 8; 1187 1188 g450_g550_maven_vid_pll_find(tv_target, &calc_pclk, &m_result, &n_result, &p_result, 1); 1189 /* adjust mode to actually used pixelclock */ 1190 tv_target.timing.pixel_clock = (calc_pclk * 1000); 1191 1192 /* program videoPLL */ 1193 DXIW(VIDPLLM, m_result); 1194 DXIW(VIDPLLN, n_result); 1195 DXIW(VIDPLLP, p_result); 1196 1197 /* calculate videoclock 'half' period duration in picoseconds */ 1198 pix_period = (1000000000 / ((float)tv_target.timing.pixel_clock)) + 0.5; 1199 LOG(4,("MAVENTV: TV videoclock period is %d picoseconds\n", pix_period)); 1200 1201 /* calculate number of 'half' clocks per line according to pixelclock set */ 1202 /* fixme: try to setup the modes in such a way that 1203 * (h_total_clk % 16) == 0 because of the CRTC2 restrictions: 1204 * we want to loose the truncating h_total trick below if possible! */ 1205 /* Note: 1206 * This is here so we can see the wanted and calc'd timing difference. */ 1207 h_total_wanted = ((m_timing.h_total / ((float)pix_period)) + 0.5); 1208 LOG(4,("MAVENTV: TV h_total should be %d units\n", h_total_wanted)); 1209 1210 /* calculate chroma subcarrier value to setup: 1211 * do this as exact as possible because this signal is very sensitive.. */ 1212 chromasc = 1213 ((((uint64)0x100000000) * (m_timing.chroma_subcarrier / calc_pclk)) + 0.5); 1214 /* copy result to MAVEN TV mode */ 1215 maventv_regs[0] = ((chromasc >> 24) & 0xff); 1216 maventv_regs[1] = ((chromasc >> 16) & 0xff); 1217 maventv_regs[2] = ((chromasc >> 8) & 0xff); 1218 maventv_regs[3] = ((chromasc >> 0) & 0xff); 1219 LOG(4,("MAVENTV: TV chroma subcarrier divider set is $%08x\n", chromasc)); 1220 1221 /* calculate front porch in 'half pixelclocks' */ 1222 /* we always round up because of the h_total truncating 'trick' below, 1223 * which works in combination with the existing difference between 1224 * h_total_clk and h_total */ 1225 //fixme: prevent this if possible! 1226 front_porch = ((m_timing.front_porch / ((float)pix_period)) + 1); 1227 /* value must be even */ 1228 front_porch &= ~0x01; 1229 1230 /* calculate back porch in 'half pixelclocks' */ 1231 /* we always round up because of the h_total truncating 'trick' below, 1232 * which works in combination with the existing difference between 1233 * h_total_clk and h_total */ 1234 //fixme: prevent this if possible! 1235 back_porch = ((m_timing.back_porch / ((float)pix_period)) + 1); 1236 /* value must be even */ 1237 back_porch &= ~0x01; 1238 1239 /* calculate h_sync length in 'half pixelclocks' */ 1240 /* we always round up because of the h_total truncating 'trick' below, 1241 * which works in combination with the existing difference between 1242 * h_total_clk and h_total */ 1243 //fixme: prevent this if possible! 1244 h_sync_length = ((m_timing.h_sync_length / ((float)pix_period)) + 1); 1245 /* value must be even */ 1246 h_sync_length &= ~0x01; 1247 1248 /* calculate h_total in 'half pixelclocks' */ 1249 h_total = h_display + front_porch + back_porch + h_sync_length; 1250 1251 LOG(4,("MAVENTV: TV front_porch is %d clocks\n", front_porch)); 1252 LOG(4,("MAVENTV: TV back_porch is %d clocks\n", back_porch)); 1253 LOG(4,("MAVENTV: TV h_sync_length is %d clocks\n", h_sync_length)); 1254 LOG(4,("MAVENTV: TV h_display is %d clocks \n", h_display)); 1255 LOG(4,("MAVENTV: TV h_total is %d clocks\n", h_total)); 1256 1257 /* calculate color_burst length in 'half pixelclocks' */ 1258 burst_length = (((m_timing.color_burst /*- 1*/) / ((float)pix_period)) + 0.5); 1259 LOG(4,("MAVENTV: TV color_burst is %d clocks.\n", burst_length)); 1260 1261 /* copy result to MAVEN TV mode */ 1262 maventv_regs[0x09] = burst_length; 1263 1264 /* Calculate line length 'rest' that remains after truncating 1265 * h_total to adhere to the CRTC2 timing restrictions. */ 1266 leftover = h_total & 0x0F; 1267 /* if some 'rest' exists, we need to compensate for it... */ 1268 /* Note: 1269 * It's much better to prevent this from happening because this 1270 * 'trick' will decay TVout timing! (timing is nolonger official) */ 1271 if (leftover) 1272 { 1273 /* truncate line length to adhere to CRTC2 restrictions */ 1274 front_porch -= leftover; 1275 h_total -= leftover; 1276 1277 /* now set line length to closest CRTC2 valid match */ 1278 if (leftover < 3) 1279 { 1280 /* 1 <= old rest <= 2: 1281 * Truncated line length is closest match. */ 1282 LOG(4,("MAVENTV: CRTC2 h_total leftover discarded (< 3)\n")); 1283 } 1284 else 1285 { 1286 if (leftover < 10) 1287 { 1288 /* 3 <= old rest <= 9: 1289 * We use the NTSC killer circuitry to get closest match. 1290 * (The 'g400_crtc2_set_timing' routine will enable it 1291 * because of the illegal h_total timing we create here.) */ 1292 front_porch += 4; 1293 h_total += 4; 1294 LOG(4,("MAVENTV: CRTC2 h_total leftover corrected via killer (> 2, < 10)\n")); 1295 } 1296 else 1297 { 1298 /* 10 <= old rest <= 15: 1299 * Set closest valid CRTC2 match. */ 1300 front_porch += 16; 1301 h_total += 16; 1302 LOG(4,("MAVENTV: CRTC2 h_total leftover corrected via increase (> 9, < 16)\n")); 1303 } 1304 } 1305 } 1306 1307 /* (linux) fixme: maybe MAVEN has requirement 800 < h_total < 1184 */ 1308 maventv_regs[0x2C] = front_porch; 1309 maventv_regs[0x0A] = back_porch; 1310 maventv_regs[0x08] = h_sync_length; 1311 1312 /* change h_total to represent 'whole pixelclocks' */ 1313 h_total = h_total >> 1; 1314 1315 /* tune display_mode adhering to CRTC2 restrictions */ 1316 tv_target.timing.h_sync_end = (h_total & ~0x07) - 8; 1317 /* h_total is checked before being programmed! (NTSC killer circuitry) */ 1318 tv_target.timing.h_total = h_total; 1319 } 1320 1321 /* output Y/C and CVBS signals (| $40 needed for SCART) */ 1322 DXIW(TVO_IDX, 0x80); 1323 DXIW(TVO_DATA, 0x03); 1324 1325 /* select input colorspace */ 1326 //fixme?: has no effect on output picture on monitor or TV... 1327 //DXIW(TVO_IDX, 0x81); 1328 //DXIW(TVO_DATA, 0x00); 1329 1330 /* calculate vertical sync point */ 1331 { 1332 int upper; 1333 1334 /* set 625 lines for PAL or 525 lines for NTSC */ 1335 maventv_regs[0x17] = m_timing.v_total / 4; 1336 maventv_regs[0x18] = m_timing.v_total & 3; 1337 1338 /* calculate upper blanking range in field lines */ 1339 upper = (m_timing.v_total - tv_target.timing.v_sync_end) >> 1; 1340 1341 /* blank TVout above the line number calculated */ 1342 maventv_regs[0x33] = upper - 1; 1343 1344 /* set calculated vertical sync point */ 1345 DXIW(TVO_IDX, 0x82); 1346 DXIW(TVO_DATA, (upper & 0xff)); 1347 DXIW(TVO_IDX, 0x83); 1348 DXIW(TVO_DATA, ((upper >> 8) & 0xff)); 1349 LOG(4,("MAVENTV: TV upper blanking range set is %d\n", upper)); 1350 } 1351 1352 /* set fized horizontal sync point */ 1353 DXIW(TVO_IDX, 0x84); 1354 DXIW(TVO_DATA, 0x01); 1355 DXIW(TVO_IDX, 0x85); 1356 DXIW(TVO_DATA, 0x00); 1357 1358 /* connect DAC1 to CON1, CRTC2/'DAC2' to CON2 (TVout mode) */ 1359 DXIW(OUTPUTCONN,0x0d); 1360 } 1361 1362 /* program new TVout mode */ 1363 for (val = 0x00; val <= 0x3D; val++) 1364 { 1365 if (si->ps.card_type <= G400MAX) 1366 { 1367 i2c_maven_write(val, maventv_regs[val]); 1368 } 1369 else 1370 { 1371 DXIW(TVO_IDX, val); 1372 DXIW(TVO_DATA, maventv_regs[val]); 1373 } 1374 } 1375 1376 /* leave mode-program mode */ 1377 if (si->ps.card_type <= G400MAX) MAVW(PGM, 0x00); 1378 else 1379 { 1380 DXIW(TVO_IDX, MGAMAV_PGM); 1381 DXIW(TVO_DATA, 0x00); 1382 1383 /* Select 2.0 Volt MAVEN DAC ref. so we have enough contrast/brightness range */ 1384 DXIW(GENIOCTRL, DXIR(GENIOCTRL) | 0x40); 1385 DXIW(GENIODATA, 0x00); 1386 } 1387 1388 /* setup CRTC2 timing */ 1389 g400_crtc2_set_timing(tv_target); 1390 1391 /* start whole thing if needed */ 1392 if (si->ps.card_type <= G400MAX) MAVW(RESYNC, 0x20); 1393 1394 return 0; 1395 } 1396