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