drivers/usb/misc/sisusbvga/sisusb_init.c

   1 /*
   2  * sisusb - usb kernel driver for SiS315(E) based USB2VGA dongles
   3  *
   4  * Display mode initializing code
   5  *
   6  * Copyright (C) 2001-2005 by Thomas Winischhofer, Vienna, Austria
   7  *
   8  * If distributed as part of the Linux kernel, this code is licensed under the
   9  * terms of the GPL v2.
  10  *
  11  * Otherwise, the following license terms apply:
  12  *
  13  * * Redistribution and use in source and binary forms, with or without
  14  * * modification, are permitted provided that the following conditions
  15  * * are met:
  16  * * 1) Redistributions of source code must retain the above copyright
  17  * *    notice, this list of conditions and the following disclaimer.
  18  * * 2) Redistributions in binary form must reproduce the above copyright
  19  * *    notice, this list of conditions and the following disclaimer in the
  20  * *    documentation and/or other materials provided with the distribution.
  21  * * 3) The name of the author may not be used to endorse or promote products
  22  * *    derived from this software without specific prior written permission.
  23  * *
  24  * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  25  * * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  26  * * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  27  * * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  28  * * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  29  * * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  30  * * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  31  * * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  32  * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  33  * * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  34  *
  35  * Author:      Thomas Winischhofer <thomas@winischhofer.net>
  36  *
  37  */
  38
  39 #include <linux/module.h>
  40 #include <linux/kernel.h>
  41 #include <linux/errno.h>
  42 #include <linux/poll.h>
  43 #include <linux/init.h>
  44 #include <linux/slab.h>
  45 #include <linux/spinlock.h>
  46 #include <linux/kref.h>
  47
  48 #include "sisusb.h"
  49
  50 #ifdef INCL_SISUSB_CON
  51
  52 #include "sisusb_init.h"
  53
  54 /*********************************************/
  55 /*         POINTER INITIALIZATION            */
  56 /*********************************************/
  57
  58 static void
  59 SiSUSB_InitPtr(struct SiS_Private *SiS_Pr)
  60 {
  61         SiS_Pr->SiS_ModeResInfo   = SiSUSB_ModeResInfo;
  62         SiS_Pr->SiS_StandTable    = SiSUSB_StandTable;
  63
  64         SiS_Pr->SiS_SModeIDTable  = SiSUSB_SModeIDTable;
  65         SiS_Pr->SiS_EModeIDTable  = SiSUSB_EModeIDTable;
  66         SiS_Pr->SiS_RefIndex      = SiSUSB_RefIndex;
  67         SiS_Pr->SiS_CRT1Table     = SiSUSB_CRT1Table;
  68
  69         SiS_Pr->SiS_VCLKData      = SiSUSB_VCLKData;
  70 }
  71
  72 /*********************************************/
  73 /*            HELPER: Get ModeID             */
  74 /*********************************************/
  75
  76 #if 0
  77 unsigned short
  78 SiSUSB_GetModeID(int HDisplay, int VDisplay, int Depth)
  79 {
  80         unsigned short ModeIndex = 0;
  81
  82         switch (HDisplay)
  83         {
  84                 case 320:
  85                         if (VDisplay == 200)
  86                                 ModeIndex = ModeIndex_320x200[Depth];
  87                         else if (VDisplay == 240)
  88                                 ModeIndex = ModeIndex_320x240[Depth];
  89                         break;
  90                 case 400:
  91                         if (VDisplay == 300)
  92                                 ModeIndex = ModeIndex_400x300[Depth];
  93                         break;
  94                 case 512:
  95                         if (VDisplay == 384)
  96                                 ModeIndex = ModeIndex_512x384[Depth];
  97                         break;
  98                 case 640:
  99                         if (VDisplay == 480)
 100                                 ModeIndex = ModeIndex_640x480[Depth];
 101                         else if (VDisplay == 400)
 102                                 ModeIndex = ModeIndex_640x400[Depth];
 103                         break;
 104                 case 720:
 105                         if (VDisplay == 480)
 106                                 ModeIndex = ModeIndex_720x480[Depth];
 107                         else if (VDisplay == 576)
 108                                 ModeIndex = ModeIndex_720x576[Depth];
 109                         break;
 110                 case 768:
 111                         if (VDisplay == 576)
 112                                 ModeIndex = ModeIndex_768x576[Depth];
 113                         break;
 114                 case 800:
 115                         if (VDisplay == 600)
 116                                 ModeIndex = ModeIndex_800x600[Depth];
 117                         else if (VDisplay == 480)
 118                                 ModeIndex = ModeIndex_800x480[Depth];
 119                         break;
 120                 case 848:
 121                         if (VDisplay == 480)
 122                                 ModeIndex = ModeIndex_848x480[Depth];
 123                         break;
 124                 case 856:
 125                         if (VDisplay == 480)
 126                                 ModeIndex = ModeIndex_856x480[Depth];
 127                         break;
 128                 case 960:
 129                         if (VDisplay == 540)
 130                                 ModeIndex = ModeIndex_960x540[Depth];
 131                         else if (VDisplay == 600)
 132                                 ModeIndex = ModeIndex_960x600[Depth];
 133                         break;
 134                 case 1024:
 135                         if (VDisplay == 576)
 136                                 ModeIndex = ModeIndex_1024x576[Depth];
 137                         else if (VDisplay == 768)
 138                                 ModeIndex = ModeIndex_1024x768[Depth];
 139                         break;
 140                 case 1152:
 141                         if (VDisplay == 864)
 142                                 ModeIndex = ModeIndex_1152x864[Depth];
 143                         break;
 144                 case 1280:
 145                         switch (VDisplay) {
 146                                 case 720:
 147                                         ModeIndex = ModeIndex_1280x720[Depth];
 148                                         break;
 149                                 case 768:
 150                                         ModeIndex = ModeIndex_1280x768[Depth];
 151                                         break;
 152                                 case 1024:
 153                                         ModeIndex = ModeIndex_1280x1024[Depth];
 154                                         break;
 155                         }
 156         }
 157
 158         return ModeIndex;
 159 }
 160 #endif  /*  0  */
 161
 162 /*********************************************/
 163 /*          HELPER: SetReg, GetReg           */
 164 /*********************************************/
 165
 166 static void
 167 SiS_SetReg(struct SiS_Private *SiS_Pr, unsigned long port,
 168                         unsigned short index, unsigned short data)
 169 {
 170         sisusb_setidxreg(SiS_Pr->sisusb, port, index, data);
 171 }
 172
 173 static void
 174 SiS_SetRegByte(struct SiS_Private *SiS_Pr, unsigned long port,
 175                                                 unsigned short data)
 176 {
 177         sisusb_setreg(SiS_Pr->sisusb, port, data);
 178 }
 179
 180 static unsigned char
 181 SiS_GetReg(struct SiS_Private *SiS_Pr, unsigned long port,
 182                                                 unsigned short index)
 183 {
 184         u8 data;
 185
 186         sisusb_getidxreg(SiS_Pr->sisusb, port, index, &data);
 187
 188         return data;
 189 }
 190
 191 static unsigned char
 192 SiS_GetRegByte(struct SiS_Private *SiS_Pr, unsigned long port)
 193 {
 194         u8 data;
 195
 196         sisusb_getreg(SiS_Pr->sisusb, port, &data);
 197
 198         return data;
 199 }
 200
 201 static void
 202 SiS_SetRegANDOR(struct SiS_Private *SiS_Pr, unsigned long port,
 203                         unsigned short index, unsigned short DataAND,
 204                                                 unsigned short DataOR)
 205 {
 206         sisusb_setidxregandor(SiS_Pr->sisusb, port, index, DataAND, DataOR);
 207 }
 208
 209 static void
 210 SiS_SetRegAND(struct SiS_Private *SiS_Pr, unsigned long port,
 211                         unsigned short index, unsigned short DataAND)
 212 {
 213         sisusb_setidxregand(SiS_Pr->sisusb, port, index, DataAND);
 214 }
 215
 216 static void
 217 SiS_SetRegOR(struct SiS_Private *SiS_Pr,unsigned long port,
 218                         unsigned short index, unsigned short DataOR)
 219 {
 220         sisusb_setidxregor(SiS_Pr->sisusb, port, index, DataOR);
 221 }
 222
 223 /*********************************************/
 224 /*      HELPER: DisplayOn, DisplayOff        */
 225 /*********************************************/
 226
 227 static void
 228 SiS_DisplayOn(struct SiS_Private *SiS_Pr)
 229 {
 230         SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x01, 0xDF);
 231 }
 232
 233 /*********************************************/
 234 /*        HELPER: Init Port Addresses        */
 235 /*********************************************/
 236
 237 static void
 238 SiSUSBRegInit(struct SiS_Private *SiS_Pr, unsigned long BaseAddr)
 239 {
 240         SiS_Pr->SiS_P3c4 = BaseAddr + 0x14;
 241         SiS_Pr->SiS_P3d4 = BaseAddr + 0x24;
 242         SiS_Pr->SiS_P3c0 = BaseAddr + 0x10;
 243         SiS_Pr->SiS_P3ce = BaseAddr + 0x1e;
 244         SiS_Pr->SiS_P3c2 = BaseAddr + 0x12;
 245         SiS_Pr->SiS_P3ca = BaseAddr + 0x1a;
 246         SiS_Pr->SiS_P3c6 = BaseAddr + 0x16;
 247         SiS_Pr->SiS_P3c7 = BaseAddr + 0x17;
 248         SiS_Pr->SiS_P3c8 = BaseAddr + 0x18;
 249         SiS_Pr->SiS_P3c9 = BaseAddr + 0x19;
 250         SiS_Pr->SiS_P3cb = BaseAddr + 0x1b;
 251         SiS_Pr->SiS_P3cc = BaseAddr + 0x1c;
 252         SiS_Pr->SiS_P3cd = BaseAddr + 0x1d;
 253         SiS_Pr->SiS_P3da = BaseAddr + 0x2a;
 254         SiS_Pr->SiS_Part1Port = BaseAddr + SIS_CRT2_PORT_04;
 255 }
 256
 257 /*********************************************/
 258 /*             HELPER: GetSysFlags           */
 259 /*********************************************/
 260
 261 static void
 262 SiS_GetSysFlags(struct SiS_Private *SiS_Pr)
 263 {
 264         SiS_Pr->SiS_MyCR63 = 0x63;
 265 }
 266
 267 /*********************************************/
 268 /*         HELPER: Init PCI & Engines        */
 269 /*********************************************/
 270
 271 static void
 272 SiSInitPCIetc(struct SiS_Private *SiS_Pr)
 273 {
 274         SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x20, 0xa1);
 275         /*  - Enable 2D (0x40)
 276          *  - Enable 3D (0x02)
 277          *  - Enable 3D vertex command fetch (0x10)
 278          *  - Enable 3D command parser (0x08)
 279          *  - Enable 3D G/L transformation engine (0x80)
 280          */
 281         SiS_SetRegOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x1E, 0xDA);
 282 }
 283
 284 /*********************************************/
 285 /*        HELPER: SET SEGMENT REGISTERS      */
 286 /*********************************************/
 287
 288 static void
 289 SiS_SetSegRegLower(struct SiS_Private *SiS_Pr, unsigned short value)
 290 {
 291         unsigned short temp;
 292
 293         value &= 0x00ff;
 294         temp = SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3cb) & 0xf0;
 295         temp |= (value >> 4);
 296         SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3cb, temp);
 297         temp = SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3cd) & 0xf0;
 298         temp |= (value & 0x0f);
 299         SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3cd, temp);
 300 }
 301
 302 static void
 303 SiS_SetSegRegUpper(struct SiS_Private *SiS_Pr, unsigned short value)
 304 {
 305         unsigned short temp;
 306
 307         value &= 0x00ff;
 308         temp = SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3cb) & 0x0f;
 309         temp |= (value & 0xf0);
 310         SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3cb, temp);
 311         temp = SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3cd) & 0x0f;
 312         temp |= (value << 4);
 313         SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3cd, temp);
 314 }
 315
 316 static void
 317 SiS_SetSegmentReg(struct SiS_Private *SiS_Pr, unsigned short value)
 318 {
 319         SiS_SetSegRegLower(SiS_Pr, value);
 320         SiS_SetSegRegUpper(SiS_Pr, value);
 321 }
 322
 323 static void
 324 SiS_ResetSegmentReg(struct SiS_Private *SiS_Pr)
 325 {
 326         SiS_SetSegmentReg(SiS_Pr, 0);
 327 }
 328
 329 static void
 330 SiS_SetSegmentRegOver(struct SiS_Private *SiS_Pr, unsigned short value)
 331 {
 332         unsigned short temp = value >> 8;
 333
 334         temp &= 0x07;
 335         temp |= (temp << 4);
 336         SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x1d, temp);
 337         SiS_SetSegmentReg(SiS_Pr, value);
 338 }
 339
 340 static void
 341 SiS_ResetSegmentRegOver(struct SiS_Private *SiS_Pr)
 342 {
 343         SiS_SetSegmentRegOver(SiS_Pr, 0);
 344 }
 345
 346 static void
 347 SiS_ResetSegmentRegisters(struct SiS_Private *SiS_Pr)
 348 {
 349         SiS_ResetSegmentReg(SiS_Pr);
 350         SiS_ResetSegmentRegOver(SiS_Pr);
 351 }
 352
 353 /*********************************************/
 354 /*           HELPER: SearchModeID            */
 355 /*********************************************/
 356
 357 static int
 358 SiS_SearchModeID(struct SiS_Private *SiS_Pr, unsigned short *ModeNo,
 359                                                 unsigned short *ModeIdIndex)
 360 {
 361         if ((*ModeNo) <= 0x13) {
 362
 363                 if ((*ModeNo) != 0x03)
 364                         return 0;
 365
 366                 (*ModeIdIndex) = 0;
 367
 368         } else {
 369
 370                 for(*ModeIdIndex = 0; ;(*ModeIdIndex)++) {
 371
 372                         if (SiS_Pr->SiS_EModeIDTable[*ModeIdIndex].Ext_ModeID == (*ModeNo))
 373                                 break;
 374
 375                         if (SiS_Pr->SiS_EModeIDTable[*ModeIdIndex].Ext_ModeID == 0xFF)
 376                                 return 0;
 377                 }
 378
 379         }
 380
 381         return 1;
 382 }
 383
 384 /*********************************************/
 385 /*            HELPER: ENABLE CRT1            */
 386 /*********************************************/
 387
 388 static void
 389 SiS_HandleCRT1(struct SiS_Private *SiS_Pr)
 390 {
 391         /* Enable CRT1 gating */
 392         SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3d4, SiS_Pr->SiS_MyCR63, 0xbf);
 393 }
 394
 395 /*********************************************/
 396 /*           HELPER: GetColorDepth           */
 397 /*********************************************/
 398
 399 static unsigned short
 400 SiS_GetColorDepth(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
 401                 unsigned short ModeIdIndex)
 402 {
 403         static const unsigned short ColorDepth[6] = { 1, 2, 4, 4, 6, 8};
 404         unsigned short modeflag;
 405         short index;
 406
 407         if (ModeNo <= 0x13) {
 408                 modeflag = SiS_Pr->SiS_SModeIDTable[ModeIdIndex].St_ModeFlag;
 409         } else {
 410                 modeflag = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_ModeFlag;
 411         }
 412
 413         index = (modeflag & ModeTypeMask) - ModeEGA;
 414         if (index < 0) index = 0;
 415         return ColorDepth[index];
 416 }
 417
 418 /*********************************************/
 419 /*             HELPER: GetOffset             */
 420 /*********************************************/
 421
 422 static unsigned short
 423 SiS_GetOffset(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
 424                 unsigned short ModeIdIndex, unsigned short rrti)
 425 {
 426         unsigned short xres, temp, colordepth, infoflag;
 427
 428         infoflag = SiS_Pr->SiS_RefIndex[rrti].Ext_InfoFlag;
 429         xres = SiS_Pr->SiS_RefIndex[rrti].XRes;
 430
 431         colordepth = SiS_GetColorDepth(SiS_Pr, ModeNo, ModeIdIndex);
 432
 433         temp = xres / 16;
 434
 435         if (infoflag & InterlaceMode)
 436                 temp <<= 1;
 437
 438         temp *= colordepth;
 439
 440         if (xres % 16)
 441                 temp += (colordepth >> 1);
 442
 443         return temp;
 444 }
 445
 446 /*********************************************/
 447 /*                   SEQ                     */
 448 /*********************************************/
 449
 450 static void
 451 SiS_SetSeqRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
 452 {
 453         unsigned char SRdata;
 454         int i;
 455
 456         SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x00, 0x03);
 457
 458         SRdata = SiS_Pr->SiS_StandTable[StandTableIndex].SR[0] | 0x20;
 459         SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x01, SRdata);
 460
 461         for(i = 2; i <= 4; i++) {
 462                 SRdata = SiS_Pr->SiS_StandTable[StandTableIndex].SR[i-1];
 463                 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, i, SRdata);
 464         }
 465 }
 466
 467 /*********************************************/
 468 /*                  MISC                     */
 469 /*********************************************/
 470
 471 static void
 472 SiS_SetMiscRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
 473 {
 474         unsigned char Miscdata = SiS_Pr->SiS_StandTable[StandTableIndex].MISC;
 475
 476         SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c2, Miscdata);
 477 }
 478
 479 /*********************************************/
 480 /*                  CRTC                     */
 481 /*********************************************/
 482
 483 static void
 484 SiS_SetCRTCRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
 485 {
 486         unsigned char CRTCdata;
 487         unsigned short i;
 488
 489         SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3d4, 0x11, 0x7f);
 490
 491         for(i = 0; i <= 0x18; i++) {
 492                 CRTCdata = SiS_Pr->SiS_StandTable[StandTableIndex].CRTC[i];
 493                 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, i, CRTCdata);
 494         }
 495 }
 496
 497 /*********************************************/
 498 /*                   ATT                     */
 499 /*********************************************/
 500
 501 static void
 502 SiS_SetATTRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
 503 {
 504         unsigned char ARdata;
 505         unsigned short i;
 506
 507         for(i = 0; i <= 0x13; i++) {
 508                 ARdata = SiS_Pr->SiS_StandTable[StandTableIndex].ATTR[i];
 509                 SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3da);
 510                 SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c0, i);
 511                 SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c0, ARdata);
 512         }
 513         SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3da);
 514         SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c0, 0x14);
 515         SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c0, 0x00);
 516
 517         SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3da);
 518         SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c0, 0x20);
 519         SiS_GetRegByte(SiS_Pr, SiS_Pr->SiS_P3da);
 520 }
 521
 522 /*********************************************/
 523 /*                   GRC                     */
 524 /*********************************************/
 525
 526 static void
 527 SiS_SetGRCRegs(struct SiS_Private *SiS_Pr, unsigned short StandTableIndex)
 528 {
 529         unsigned char GRdata;
 530         unsigned short i;
 531
 532         for(i = 0; i <= 0x08; i++) {
 533                 GRdata = SiS_Pr->SiS_StandTable[StandTableIndex].GRC[i];
 534                 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3ce, i, GRdata);
 535         }
 536
 537         if (SiS_Pr->SiS_ModeType > ModeVGA) {
 538                 /* 256 color disable */
 539                 SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3ce, 0x05, 0xBF);
 540         }
 541 }
 542
 543 /*********************************************/
 544 /*          CLEAR EXTENDED REGISTERS         */
 545 /*********************************************/
 546
 547 static void
 548 SiS_ClearExt1Regs(struct SiS_Private *SiS_Pr, unsigned short ModeNo)
 549 {
 550         int i;
 551
 552         for(i = 0x0A; i <= 0x0E; i++) {
 553                 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, i, 0x00);
 554         }
 555
 556         SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x37, 0xFE);
 557 }
 558
 559 /*********************************************/
 560 /*              Get rate index               */
 561 /*********************************************/
 562
 563 static unsigned short
 564 SiS_GetRatePtr(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
 565                                         unsigned short ModeIdIndex)
 566 {
 567         unsigned short rrti, i, index, temp;
 568
 569         if (ModeNo <= 0x13)
 570                 return 0xFFFF;
 571
 572         index = SiS_GetReg(SiS_Pr,SiS_Pr->SiS_P3d4, 0x33) & 0x0F;
 573         if (index > 0) index--;
 574
 575         rrti = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].REFindex;
 576         ModeNo = SiS_Pr->SiS_RefIndex[rrti].ModeID;
 577
 578         i = 0;
 579         do {
 580                 if (SiS_Pr->SiS_RefIndex[rrti + i].ModeID != ModeNo)
 581                         break;
 582
 583                 temp = SiS_Pr->SiS_RefIndex[rrti + i].Ext_InfoFlag & ModeTypeMask;
 584                 if (temp < SiS_Pr->SiS_ModeType)
 585                         break;
 586
 587                 i++;
 588                 index--;
 589         } while(index != 0xFFFF);
 590
 591         i--;
 592
 593         return (rrti + i);
 594 }
 595
 596 /*********************************************/
 597 /*                  SYNC                     */
 598 /*********************************************/
 599
 600 static void
 601 SiS_SetCRT1Sync(struct SiS_Private *SiS_Pr, unsigned short rrti)
 602 {
 603         unsigned short sync = SiS_Pr->SiS_RefIndex[rrti].Ext_InfoFlag >> 8;
 604         sync &= 0xC0;
 605         sync |= 0x2f;
 606         SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c2, sync);
 607 }
 608
 609 /*********************************************/
 610 /*                  CRTC/2                   */
 611 /*********************************************/
 612
 613 static void
 614 SiS_SetCRT1CRTC(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
 615                         unsigned short ModeIdIndex, unsigned short rrti)
 616 {
 617         unsigned char  index;
 618         unsigned short temp, i, j, modeflag;
 619
 620         SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3d4,0x11,0x7f);
 621
 622         modeflag = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_ModeFlag;
 623
 624         index = SiS_Pr->SiS_RefIndex[rrti].Ext_CRT1CRTC;
 625
 626         for(i = 0,j = 0; i <= 7; i++, j++) {
 627                 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, j,
 628                                 SiS_Pr->SiS_CRT1Table[index].CR[i]);
 629         }
 630         for(j = 0x10; i <= 10; i++, j++) {
 631                 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, j,
 632                                 SiS_Pr->SiS_CRT1Table[index].CR[i]);
 633         }
 634         for(j = 0x15; i <= 12; i++, j++) {
 635                 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, j,
 636                                 SiS_Pr->SiS_CRT1Table[index].CR[i]);
 637         }
 638         for(j = 0x0A; i <= 15; i++, j++) {
 639                 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, j,
 640                                 SiS_Pr->SiS_CRT1Table[index].CR[i]);
 641         }
 642
 643         temp = SiS_Pr->SiS_CRT1Table[index].CR[16] & 0xE0;
 644         SiS_SetReg(SiS_Pr,SiS_Pr->SiS_P3c4, 0x0E, temp);
 645
 646         temp = ((SiS_Pr->SiS_CRT1Table[index].CR[16]) & 0x01) << 5;
 647         if (modeflag & DoubleScanMode)  temp |= 0x80;
 648         SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3d4, 0x09, 0x5F, temp);
 649
 650         if (SiS_Pr->SiS_ModeType > ModeVGA)
 651                 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x14, 0x4F);
 652 }
 653
 654 /*********************************************/
 655 /*               OFFSET & PITCH              */
 656 /*********************************************/
 657 /*  (partly overruled by SetPitch() in XF86) */
 658 /*********************************************/
 659
 660 static void
 661 SiS_SetCRT1Offset(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
 662                         unsigned short ModeIdIndex, unsigned short rrti)
 663 {
 664         unsigned short du = SiS_GetOffset(SiS_Pr, ModeNo, ModeIdIndex, rrti);
 665         unsigned short infoflag =  SiS_Pr->SiS_RefIndex[rrti].Ext_InfoFlag;
 666         unsigned short temp;
 667
 668         temp = (du >> 8) & 0x0f;
 669         SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x0E, 0xF0, temp);
 670
 671         SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x13, (du & 0xFF));
 672
 673         if (infoflag & InterlaceMode) du >>= 1;
 674
 675         du <<= 5;
 676         temp = (du >> 8) & 0xff;
 677         if (du & 0xff) temp++;
 678         temp++;
 679         SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x10, temp);
 680 }
 681
 682 /*********************************************/
 683 /*                  VCLK                     */
 684 /*********************************************/
 685
 686 static void
 687 SiS_SetCRT1VCLK(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
 688                                                 unsigned short rrti)
 689 {
 690         unsigned short index = SiS_Pr->SiS_RefIndex[rrti].Ext_CRTVCLK;
 691         unsigned short clka = SiS_Pr->SiS_VCLKData[index].SR2B;
 692         unsigned short clkb = SiS_Pr->SiS_VCLKData[index].SR2C;
 693
 694         SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4,0x31,0xCF);
 695
 696         SiS_SetReg(SiS_Pr,SiS_Pr->SiS_P3c4,0x2B,clka);
 697         SiS_SetReg(SiS_Pr,SiS_Pr->SiS_P3c4,0x2C,clkb);
 698         SiS_SetReg(SiS_Pr,SiS_Pr->SiS_P3c4,0x2D,0x01);
 699 }
 700
 701 /*********************************************/
 702 /*                  FIFO                     */
 703 /*********************************************/
 704
 705 static void
 706 SiS_SetCRT1FIFO_310(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
 707                                                         unsigned short mi)
 708 {
 709         unsigned short modeflag = SiS_Pr->SiS_EModeIDTable[mi].Ext_ModeFlag;
 710
 711         /* disable auto-threshold */
 712         SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x3D, 0xFE);
 713
 714         SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x08, 0xAE);
 715         SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x09, 0xF0);
 716
 717         if (ModeNo <= 0x13)
 718                 return;
 719
 720         if ((!(modeflag & DoubleScanMode)) || (!(modeflag & HalfDCLK))) {
 721                 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x08, 0x34);
 722                 SiS_SetRegOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x3D, 0x01);
 723         }
 724 }
 725
 726 /*********************************************/
 727 /*              MODE REGISTERS               */
 728 /*********************************************/
 729
 730 static void
 731 SiS_SetVCLKState(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
 732                                                         unsigned short rrti)
 733 {
 734         unsigned short data = 0, VCLK = 0, index = 0;
 735
 736         if (ModeNo > 0x13) {
 737                 index = SiS_Pr->SiS_RefIndex[rrti].Ext_CRTVCLK;
 738                 VCLK = SiS_Pr->SiS_VCLKData[index].CLOCK;
 739         }
 740
 741         if (VCLK >= 166) data |= 0x0c;
 742         SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x32, 0xf3, data);
 743
 744         if (VCLK >= 166)
 745                 SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x1f, 0xe7);
 746
 747         /* DAC speed */
 748         data = 0x03;
 749         if (VCLK >= 260)
 750                 data = 0x00;
 751         else if (VCLK >= 160)
 752                 data = 0x01;
 753         else if (VCLK >= 135)
 754                 data = 0x02;
 755
 756         SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x07, 0xF8, data);
 757 }
 758
 759 static void
 760 SiS_SetCRT1ModeRegs(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
 761                         unsigned short ModeIdIndex, unsigned short rrti)
 762 {
 763         unsigned short data, infoflag = 0, modeflag;
 764
 765         if (ModeNo <= 0x13)
 766                 modeflag = SiS_Pr->SiS_SModeIDTable[ModeIdIndex].St_ModeFlag;
 767         else {
 768                 modeflag = SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_ModeFlag;
 769                 infoflag = SiS_Pr->SiS_RefIndex[rrti].Ext_InfoFlag;
 770         }
 771
 772         /* Disable DPMS */
 773         SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x1F, 0x3F);
 774
 775         data = 0;
 776         if (ModeNo > 0x13) {
 777                 if (SiS_Pr->SiS_ModeType > ModeEGA) {
 778                         data |= 0x02;
 779                         data |= ((SiS_Pr->SiS_ModeType - ModeVGA) << 2);
 780                 }
 781                 if (infoflag & InterlaceMode) data |= 0x20;
 782         }
 783         SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x06, 0xC0, data);
 784
 785         data = 0;
 786         if (infoflag & InterlaceMode) {
 787                 /* data = (Hsync / 8) - ((Htotal / 8) / 2) + 3 */
 788                 unsigned short hrs = (SiS_GetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x04) |
 789                         ((SiS_GetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x0b) & 0xc0) << 2)) - 3;
 790                 unsigned short hto = (SiS_GetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x00) |
 791                         ((SiS_GetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x0b) & 0x03) << 8)) + 5;
 792                 data = hrs - (hto >> 1) + 3;
 793         }
 794         SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x19, (data & 0xFF));
 795         SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3d4, 0x1a, 0xFC, (data >> 8));
 796
 797         if (modeflag & HalfDCLK)
 798                 SiS_SetRegOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x01, 0x08);
 799
 800         data = 0;
 801         if (modeflag & LineCompareOff)
 802                 data = 0x08;
 803         SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x0F, 0xB7, data);
 804
 805         if ((SiS_Pr->SiS_ModeType == ModeEGA) && (ModeNo > 0x13))
 806                 SiS_SetRegOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x0F, 0x40);
 807
 808         SiS_SetRegAND(SiS_Pr, SiS_Pr->SiS_P3c4, 0x31, 0xfb);
 809
 810         data = 0x60;
 811         if (SiS_Pr->SiS_ModeType != ModeText) {
 812                 data ^= 0x60;
 813                 if (SiS_Pr->SiS_ModeType != ModeEGA)
 814                         data ^= 0xA0;
 815         }
 816         SiS_SetRegANDOR(SiS_Pr, SiS_Pr->SiS_P3c4, 0x21, 0x1F, data);
 817
 818         SiS_SetVCLKState(SiS_Pr, ModeNo, rrti);
 819
 820         if (SiS_GetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x31) & 0x40)
 821                 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x52, 0x2c);
 822         else
 823                 SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x52, 0x6c);
 824 }
 825
 826 /*********************************************/
 827 /*                 LOAD DAC                  */
 828 /*********************************************/
 829
 830 static void
 831 SiS_WriteDAC(struct SiS_Private *SiS_Pr, unsigned long DACData,
 832                 unsigned short shiftflag, unsigned short dl, unsigned short ah,
 833                 unsigned short al, unsigned short dh)
 834 {
 835         unsigned short d1, d2, d3;
 836
 837         switch (dl) {
 838                 case  0:
 839                         d1 = dh; d2 = ah; d3 = al;
 840                         break;
 841                 case  1:
 842                         d1 = ah; d2 = al; d3 = dh;
 843                         break;
 844                 default:
 845                         d1 = al; d2 = dh; d3 = ah;
 846         }
 847         SiS_SetRegByte(SiS_Pr, DACData, (d1 << shiftflag));
 848         SiS_SetRegByte(SiS_Pr, DACData, (d2 << shiftflag));
 849         SiS_SetRegByte(SiS_Pr, DACData, (d3 << shiftflag));
 850 }
 851
 852 static void
 853 SiS_LoadDAC(struct SiS_Private *SiS_Pr, unsigned short ModeNo, unsigned short mi)
 854 {
 855         unsigned short data, data2, time, i, j, k, m, n, o;
 856         unsigned short si, di, bx, sf;
 857         unsigned long DACAddr, DACData;
 858         const unsigned char *table = NULL;
 859
 860         if (ModeNo < 0x13)
 861                 data = SiS_Pr->SiS_SModeIDTable[mi].St_ModeFlag;
 862         else
 863                 data = SiS_Pr->SiS_EModeIDTable[mi].Ext_ModeFlag;
 864
 865         data &= DACInfoFlag;
 866
 867         j = time = 64;
 868         if (data == 0x00)
 869                 table = SiS_MDA_DAC;
 870         else if (data == 0x08)
 871                 table = SiS_CGA_DAC;
 872         else if (data == 0x10)
 873                 table = SiS_EGA_DAC;
 874         else {
 875                 j = 16;
 876                 time = 256;
 877                 table = SiS_VGA_DAC;
 878         }
 879
 880         DACAddr = SiS_Pr->SiS_P3c8;
 881         DACData = SiS_Pr->SiS_P3c9;
 882         sf = 0;
 883         SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c6, 0xFF);
 884
 885         SiS_SetRegByte(SiS_Pr, DACAddr, 0x00);
 886
 887         for(i = 0; i < j; i++) {
 888                 data = table[i];
 889                 for(k = 0; k < 3; k++) {
 890                         data2 = 0;
 891                         if (data & 0x01) data2 += 0x2A;
 892                         if (data & 0x02) data2 += 0x15;
 893                         SiS_SetRegByte(SiS_Pr, DACData, (data2 << sf));
 894                         data >>= 2;
 895                 }
 896         }
 897
 898         if (time == 256) {
 899                 for(i = 16; i < 32; i++) {
 900                         data = table[i] << sf;
 901                         for(k = 0; k < 3; k++)
 902                                 SiS_SetRegByte(SiS_Pr, DACData, data);
 903                 }
 904                 si = 32;
 905                 for(m = 0; m < 9; m++) {
 906                         di = si;
 907                         bx = si + 4;
 908                         for(n = 0; n < 3; n++) {
 909                                 for(o = 0; o < 5; o++) {
 910                                         SiS_WriteDAC(SiS_Pr, DACData, sf, n,
 911                                                 table[di], table[bx], table[si]);
 912                                         si++;
 913                                 }
 914                                 si -= 2;
 915                                 for(o = 0; o < 3; o++) {
 916                                         SiS_WriteDAC(SiS_Pr, DACData, sf, n,
 917                                                 table[di], table[si], table[bx]);
 918                                         si--;
 919                                 }
 920                         }
 921                 si += 5;
 922                 }
 923         }
 924 }
 925
 926 /*********************************************/
 927 /*         SET CRT1 REGISTER GROUP           */
 928 /*********************************************/
 929
 930 static void
 931 SiS_SetCRT1Group(struct SiS_Private *SiS_Pr, unsigned short ModeNo,
 932                                         unsigned short ModeIdIndex)
 933 {
 934         unsigned short StandTableIndex, rrti;
 935
 936         SiS_Pr->SiS_CRT1Mode = ModeNo;
 937
 938         if (ModeNo <= 0x13)
 939                 StandTableIndex = 0;
 940         else
 941                 StandTableIndex = 1;
 942
 943         SiS_ResetSegmentRegisters(SiS_Pr);
 944         SiS_SetSeqRegs(SiS_Pr, StandTableIndex);
 945         SiS_SetMiscRegs(SiS_Pr, StandTableIndex);
 946         SiS_SetCRTCRegs(SiS_Pr, StandTableIndex);
 947         SiS_SetATTRegs(SiS_Pr, StandTableIndex);
 948         SiS_SetGRCRegs(SiS_Pr, StandTableIndex);
 949         SiS_ClearExt1Regs(SiS_Pr, ModeNo);
 950
 951         rrti = SiS_GetRatePtr(SiS_Pr, ModeNo, ModeIdIndex);
 952
 953         if (rrti != 0xFFFF) {
 954                 SiS_SetCRT1Sync(SiS_Pr, rrti);
 955                 SiS_SetCRT1CRTC(SiS_Pr, ModeNo, ModeIdIndex, rrti);
 956                 SiS_SetCRT1Offset(SiS_Pr, ModeNo, ModeIdIndex, rrti);
 957                 SiS_SetCRT1VCLK(SiS_Pr, ModeNo, rrti);
 958         }
 959
 960         SiS_SetCRT1FIFO_310(SiS_Pr, ModeNo, ModeIdIndex);
 961
 962         SiS_SetCRT1ModeRegs(SiS_Pr, ModeNo, ModeIdIndex, rrti);
 963
 964         SiS_LoadDAC(SiS_Pr, ModeNo, ModeIdIndex);
 965
 966         SiS_DisplayOn(SiS_Pr);
 967 }
 968
 969 /*********************************************/
 970 /*                 SiSSetMode()              */
 971 /*********************************************/
 972
 973 int
 974 SiSUSBSetMode(struct SiS_Private *SiS_Pr, unsigned short ModeNo)
 975 {
 976         unsigned short ModeIdIndex;
 977         unsigned long  BaseAddr = SiS_Pr->IOAddress;
 978
 979         SiSUSB_InitPtr(SiS_Pr);
 980         SiSUSBRegInit(SiS_Pr, BaseAddr);
 981         SiS_GetSysFlags(SiS_Pr);
 982
 983         if (!(SiS_SearchModeID(SiS_Pr, &ModeNo, &ModeIdIndex)))
 984                 return 0;
 985
 986         SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3c4, 0x05, 0x86);
 987
 988         SiSInitPCIetc(SiS_Pr);
 989
 990         ModeNo &= 0x7f;
 991
 992         SiS_Pr->SiS_ModeType =
 993                 SiS_Pr->SiS_EModeIDTable[ModeIdIndex].Ext_ModeFlag & ModeTypeMask;
 994
 995         SiS_Pr->SiS_SetFlag = LowModeTests;
 996
 997         /* Set mode on CRT1 */
 998         SiS_SetCRT1Group(SiS_Pr, ModeNo, ModeIdIndex);
 999
1000         SiS_HandleCRT1(SiS_Pr);
1001
1002         SiS_DisplayOn(SiS_Pr);
1003         SiS_SetRegByte(SiS_Pr, SiS_Pr->SiS_P3c6, 0xFF);
1004
1005         /* Store mode number */
1006         SiS_SetReg(SiS_Pr, SiS_Pr->SiS_P3d4, 0x34, ModeNo);
1007
1008         return 1;
1009 }
1010
1011 int
1012 SiSUSBSetVESAMode(struct SiS_Private *SiS_Pr, unsigned short VModeNo)
1013 {
1014         unsigned short ModeNo = 0;
1015         int i;
1016
1017         SiSUSB_InitPtr(SiS_Pr);
1018
1019         if (VModeNo == 0x03) {
1020
1021                 ModeNo = 0x03;
1022
1023         } else {
1024
1025                 i = 0;
1026                 do {
1027
1028                         if (SiS_Pr->SiS_EModeIDTable[i].Ext_VESAID == VModeNo) {
1029                                 ModeNo = SiS_Pr->SiS_EModeIDTable[i].Ext_ModeID;
1030                                 break;
1031                         }
1032
1033                 } while (SiS_Pr->SiS_EModeIDTable[i++].Ext_ModeID != 0xff);
1034
1035         }
1036
1037         if (!ModeNo)
1038                 return 0;
1039
1040         return SiSUSBSetMode(SiS_Pr, ModeNo);
1041 }
1042
1043 #endif /* INCL_SISUSB_CON */
1044
1045
1046
1047