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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 */