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[CPUFREQ] Fix missing cpufreq_cpu_put() call in ->show
[linux-2.6/sactl.git] / drivers / video / tridentfb.c
blob919ce75db9e2ce1a0bcf6ce71d498eace0233c38
1 /*
2 * Frame buffer driver for Trident Blade and Image series
3 *
4 * Copyright 2001, 2002 - Jani Monoses <jani@iv.ro>
5 *
6 *
7 * CREDITS:(in order of appearance)
8 * skeletonfb.c by Geert Uytterhoeven and other fb code in drivers/video
9 * Special thanks ;) to Mattia Crivellini <tia@mclink.it>
10 * much inspired by the XFree86 4.x Trident driver sources
11 * by Alan Hourihane the FreeVGA project
12 * Francesco Salvestrini <salvestrini@users.sf.net> XP support,
13 * code, suggestions
14 * TODO:
15 * timing value tweaking so it looks good on every monitor in every mode
16 * TGUI acceleration
17 */
18
19 #include <linux/module.h>
20 #include <linux/fb.h>
21 #include <linux/init.h>
22 #include <linux/pci.h>
23
24 #include <linux/delay.h>
25 #include <video/trident.h>
26
27 #define VERSION "0.7.8-NEWAPI"
28
29 struct tridentfb_par {
30 int vclk; /* in MHz */
31 void __iomem *io_virt; /* iospace virtual memory address */
32 };
33
34 static unsigned char eng_oper; /* engine operation... */
35 static struct fb_ops tridentfb_ops;
36
37 static struct tridentfb_par default_par;
38
39 /* FIXME:kmalloc these 3 instead */
40 static struct fb_info fb_info;
41 static u32 pseudo_pal[16];
42
43 static struct fb_var_screeninfo default_var;
44
45 static struct fb_fix_screeninfo tridentfb_fix = {
46 .id = "Trident",
47 .type = FB_TYPE_PACKED_PIXELS,
48 .ypanstep = 1,
49 .visual = FB_VISUAL_PSEUDOCOLOR,
50 .accel = FB_ACCEL_NONE,
51 };
52
53 static int chip_id;
54
55 static int defaultaccel;
56 static int displaytype;
57
58 /* defaults which are normally overriden by user values */
59
60 /* video mode */
61 static char *mode = "640x480";
62 static int bpp = 8;
63
64 static int noaccel;
65
66 static int center;
67 static int stretch;
68
69 static int fp;
70 static int crt;
71
72 static int memsize;
73 static int memdiff;
74 static int nativex;
75
76 module_param(mode, charp, 0);
77 module_param(bpp, int, 0);
78 module_param(center, int, 0);
79 module_param(stretch, int, 0);
80 module_param(noaccel, int, 0);
81 module_param(memsize, int, 0);
82 module_param(memdiff, int, 0);
83 module_param(nativex, int, 0);
84 module_param(fp, int, 0);
85 module_param(crt, int, 0);
86
87 static int chip3D;
88 static int chipcyber;
89
90 static int is3Dchip(int id)
91 {
92 return ((id == BLADE3D) || (id == CYBERBLADEE4) ||
93 (id == CYBERBLADEi7) || (id == CYBERBLADEi7D) ||
94 (id == CYBER9397) || (id == CYBER9397DVD) ||
95 (id == CYBER9520) || (id == CYBER9525DVD) ||
96 (id == IMAGE975) || (id == IMAGE985) ||
97 (id == CYBERBLADEi1) || (id == CYBERBLADEi1D) ||
98 (id == CYBERBLADEAi1) || (id == CYBERBLADEAi1D) ||
99 (id == CYBERBLADEXPm8) || (id == CYBERBLADEXPm16) ||
100 (id == CYBERBLADEXPAi1));
101 }
102
103 static int iscyber(int id)
104 {
105 switch (id) {
106 case CYBER9388:
107 case CYBER9382:
108 case CYBER9385:
109 case CYBER9397:
110 case CYBER9397DVD:
111 case CYBER9520:
112 case CYBER9525DVD:
113 case CYBERBLADEE4:
114 case CYBERBLADEi7D:
115 case CYBERBLADEi1:
116 case CYBERBLADEi1D:
117 case CYBERBLADEAi1:
118 case CYBERBLADEAi1D:
119 case CYBERBLADEXPAi1:
120 return 1;
121
122 case CYBER9320:
123 case TGUI9660:
124 case IMAGE975:
125 case IMAGE985:
126 case BLADE3D:
127 case CYBERBLADEi7: /* VIA MPV4 integrated version */
128
129 default:
130 /* case CYBERBLDAEXPm8: Strange */
131 /* case CYBERBLDAEXPm16: Strange */
132 return 0;
133 }
134 }
135
136 #define CRT 0x3D0 /* CRTC registers offset for color display */
137
138 #ifndef TRIDENT_MMIO
139 #define TRIDENT_MMIO 1
140 #endif
141
142 #if TRIDENT_MMIO
143 #define t_outb(val, reg) writeb(val,((struct tridentfb_par *)(fb_info.par))->io_virt + reg)
144 #define t_inb(reg) readb(((struct tridentfb_par*)(fb_info.par))->io_virt + reg)
145 #else
146 #define t_outb(val, reg) outb(val, reg)
147 #define t_inb(reg) inb(reg)
148 #endif
149
150
151 static struct accel_switch {
152 void (*init_accel) (int, int);
153 void (*wait_engine) (void);
154 void (*fill_rect) (u32, u32, u32, u32, u32, u32);
155 void (*copy_rect) (u32, u32, u32, u32, u32, u32);
156 } *acc;
157
158 #define writemmr(r, v) writel(v, ((struct tridentfb_par *)fb_info.par)->io_virt + r)
159 #define readmmr(r) readl(((struct tridentfb_par *)fb_info.par)->io_virt + r)
160
161 /*
162 * Blade specific acceleration.
163 */
164
165 #define point(x, y) ((y) << 16 | (x))
166 #define STA 0x2120
167 #define CMD 0x2144
168 #define ROP 0x2148
169 #define CLR 0x2160
170 #define SR1 0x2100
171 #define SR2 0x2104
172 #define DR1 0x2108
173 #define DR2 0x210C
174
175 #define ROP_S 0xCC
176
177 static void blade_init_accel(int pitch, int bpp)
178 {
179 int v1 = (pitch >> 3) << 20;
180 int tmp = 0, v2;
181 switch (bpp) {
182 case 8:
183 tmp = 0;
184 break;
185 case 15:
186 tmp = 5;
187 break;
188 case 16:
189 tmp = 1;
190 break;
191 case 24:
192 case 32:
193 tmp = 2;
194 break;
195 }
196 v2 = v1 | (tmp << 29);
197 writemmr(0x21C0, v2);
198 writemmr(0x21C4, v2);
199 writemmr(0x21B8, v2);
200 writemmr(0x21BC, v2);
201 writemmr(0x21D0, v1);
202 writemmr(0x21D4, v1);
203 writemmr(0x21C8, v1);
204 writemmr(0x21CC, v1);
205 writemmr(0x216C, 0);
206 }
207
208 static void blade_wait_engine(void)
209 {
210 while (readmmr(STA) & 0xFA800000) ;
211 }
212
213 static void blade_fill_rect(u32 x, u32 y, u32 w, u32 h, u32 c, u32 rop)
214 {
215 writemmr(CLR, c);
216 writemmr(ROP, rop ? 0x66 : ROP_S);
217 writemmr(CMD, 0x20000000 | 1 << 19 | 1 << 4 | 2 << 2);
218
219 writemmr(DR1, point(x, y));
220 writemmr(DR2, point(x + w - 1, y + h - 1));
221 }
222
223 static void blade_copy_rect(u32 x1, u32 y1, u32 x2, u32 y2, u32 w, u32 h)
224 {
225 u32 s1, s2, d1, d2;
226 int direction = 2;
227 s1 = point(x1, y1);
228 s2 = point(x1 + w - 1, y1 + h - 1);
229 d1 = point(x2, y2);
230 d2 = point(x2 + w - 1, y2 + h - 1);
231
232 if ((y1 > y2) || ((y1 == y2) && (x1 > x2)))
233 direction = 0;
234
235 writemmr(ROP, ROP_S);
236 writemmr(CMD, 0xE0000000 | 1 << 19 | 1 << 4 | 1 << 2 | direction);
237
238 writemmr(SR1, direction ? s2 : s1);
239 writemmr(SR2, direction ? s1 : s2);
240 writemmr(DR1, direction ? d2 : d1);
241 writemmr(DR2, direction ? d1 : d2);
242 }
243
244 static struct accel_switch accel_blade = {
245 blade_init_accel,
246 blade_wait_engine,
247 blade_fill_rect,
248 blade_copy_rect,
249 };
250
251 /*
252 * BladeXP specific acceleration functions
253 */
254
255 #define ROP_P 0xF0
256 #define masked_point(x, y) ((y & 0xffff)<<16|(x & 0xffff))
257
258 static void xp_init_accel(int pitch, int bpp)
259 {
260 int tmp = 0, v1;
261 unsigned char x = 0;
262
263 switch (bpp) {
264 case 8:
265 x = 0;
266 break;
267 case 16:
268 x = 1;
269 break;
270 case 24:
271 x = 3;
272 break;
273 case 32:
274 x = 2;
275 break;
276 }
277
278 switch (pitch << (bpp >> 3)) {
279 case 8192:
280 case 512:
281 x |= 0x00;
282 break;
283 case 1024:
284 x |= 0x04;
285 break;
286 case 2048:
287 x |= 0x08;
288 break;
289 case 4096:
290 x |= 0x0C;
291 break;
292 }
293
294 t_outb(x, 0x2125);
295
296 eng_oper = x | 0x40;
297
298 switch (bpp) {
299 case 8:
300 tmp = 18;
301 break;
302 case 15:
303 case 16:
304 tmp = 19;
305 break;
306 case 24:
307 case 32:
308 tmp = 20;
309 break;
310 }
311
312 v1 = pitch << tmp;
313
314 writemmr(0x2154, v1);
315 writemmr(0x2150, v1);
316 t_outb(3, 0x2126);
317 }
318
319 static void xp_wait_engine(void)
320 {
321 int busy;
322 int count, timeout;
323
324 count = 0;
325 timeout = 0;
326 for (;;) {
327 busy = t_inb(STA) & 0x80;
328 if (busy != 0x80)
329 return;
330 count++;
331 if (count == 10000000) {
332 /* Timeout */
333 count = 9990000;
334 timeout++;
335 if (timeout == 8) {
336 /* Reset engine */
337 t_outb(0x00, 0x2120);
338 return;
339 }
340 }
341 }
342 }
343
344 static void xp_fill_rect(u32 x, u32 y, u32 w, u32 h, u32 c, u32 rop)
345 {
346 writemmr(0x2127, ROP_P);
347 writemmr(0x2158, c);
348 writemmr(0x2128, 0x4000);
349 writemmr(0x2140, masked_point(h, w));
350 writemmr(0x2138, masked_point(y, x));
351 t_outb(0x01, 0x2124);
352 t_outb(eng_oper, 0x2125);
353 }
354
355 static void xp_copy_rect(u32 x1, u32 y1, u32 x2, u32 y2, u32 w, u32 h)
356 {
357 int direction;
358 u32 x1_tmp, x2_tmp, y1_tmp, y2_tmp;
359
360 direction = 0x0004;
361
362 if ((x1 < x2) && (y1 == y2)) {
363 direction |= 0x0200;
364 x1_tmp = x1 + w - 1;
365 x2_tmp = x2 + w - 1;
366 } else {
367 x1_tmp = x1;
368 x2_tmp = x2;
369 }
370
371 if (y1 < y2) {
372 direction |= 0x0100;
373 y1_tmp = y1 + h - 1;
374 y2_tmp = y2 + h - 1;
375 } else {
376 y1_tmp = y1;
377 y2_tmp = y2;
378 }
379
380 writemmr(0x2128, direction);
381 t_outb(ROP_S, 0x2127);
382 writemmr(0x213C, masked_point(y1_tmp, x1_tmp));
383 writemmr(0x2138, masked_point(y2_tmp, x2_tmp));
384 writemmr(0x2140, masked_point(h, w));
385 t_outb(0x01, 0x2124);
386 }
387
388 static struct accel_switch accel_xp = {
389 xp_init_accel,
390 xp_wait_engine,
391 xp_fill_rect,
392 xp_copy_rect,
393 };
394
395 /*
396 * Image specific acceleration functions
397 */
398 static void image_init_accel(int pitch, int bpp)
399 {
400 int tmp = 0;
401 switch (bpp) {
402 case 8:
403 tmp = 0;
404 break;
405 case 15:
406 tmp = 5;
407 break;
408 case 16:
409 tmp = 1;
410 break;
411 case 24:
412 case 32:
413 tmp = 2;
414 break;
415 }
416 writemmr(0x2120, 0xF0000000);
417 writemmr(0x2120, 0x40000000 | tmp);
418 writemmr(0x2120, 0x80000000);
419 writemmr(0x2144, 0x00000000);
420 writemmr(0x2148, 0x00000000);
421 writemmr(0x2150, 0x00000000);
422 writemmr(0x2154, 0x00000000);
423 writemmr(0x2120, 0x60000000 | (pitch << 16) | pitch);
424 writemmr(0x216C, 0x00000000);
425 writemmr(0x2170, 0x00000000);
426 writemmr(0x217C, 0x00000000);
427 writemmr(0x2120, 0x10000000);
428 writemmr(0x2130, (2047 << 16) | 2047);
429 }
430
431 static void image_wait_engine(void)
432 {
433 while (readmmr(0x2164) & 0xF0000000) ;
434 }
435
436 static void image_fill_rect(u32 x, u32 y, u32 w, u32 h, u32 c, u32 rop)
437 {
438 writemmr(0x2120, 0x80000000);
439 writemmr(0x2120, 0x90000000 | ROP_S);
440
441 writemmr(0x2144, c);
442
443 writemmr(DR1, point(x, y));
444 writemmr(DR2, point(x + w - 1, y + h - 1));
445
446 writemmr(0x2124, 0x80000000 | 3 << 22 | 1 << 10 | 1 << 9);
447 }
448
449 static void image_copy_rect(u32 x1, u32 y1, u32 x2, u32 y2, u32 w, u32 h)
450 {
451 u32 s1, s2, d1, d2;
452 int direction = 2;
453 s1 = point(x1, y1);
454 s2 = point(x1 + w - 1, y1 + h - 1);
455 d1 = point(x2, y2);
456 d2 = point(x2 + w - 1, y2 + h - 1);
457
458 if ((y1 > y2) || ((y1 == y2) && (x1 > x2)))
459 direction = 0;
460
461 writemmr(0x2120, 0x80000000);
462 writemmr(0x2120, 0x90000000 | ROP_S);
463
464 writemmr(SR1, direction ? s2 : s1);
465 writemmr(SR2, direction ? s1 : s2);
466 writemmr(DR1, direction ? d2 : d1);
467 writemmr(DR2, direction ? d1 : d2);
468 writemmr(0x2124, 0x80000000 | 1 << 22 | 1 << 10 | 1 << 7 | direction);
469 }
470
471 static struct accel_switch accel_image = {
472 image_init_accel,
473 image_wait_engine,
474 image_fill_rect,
475 image_copy_rect,
476 };
477
478 /*
479 * Accel functions called by the upper layers
480 */
481 #ifdef CONFIG_FB_TRIDENT_ACCEL
482 static void tridentfb_fillrect(struct fb_info *info,
483 const struct fb_fillrect *fr)
484 {
485 int bpp = info->var.bits_per_pixel;
486 int col = 0;
487
488 switch (bpp) {
489 default:
490 case 8:
491 col |= fr->color;
492 col |= col << 8;
493 col |= col << 16;
494 break;
495 case 16:
496 col = ((u32 *)(info->pseudo_palette))[fr->color];
497 break;
498 case 32:
499 col = ((u32 *)(info->pseudo_palette))[fr->color];
500 break;
501 }
502
503 acc->fill_rect(fr->dx, fr->dy, fr->width, fr->height, col, fr->rop);
504 acc->wait_engine();
505 }
506 static void tridentfb_copyarea(struct fb_info *info,
507 const struct fb_copyarea *ca)
508 {
509 acc->copy_rect(ca->sx, ca->sy, ca->dx, ca->dy, ca->width, ca->height);
510 acc->wait_engine();
511 }
512 #else /* !CONFIG_FB_TRIDENT_ACCEL */
513 #define tridentfb_fillrect cfb_fillrect
514 #define tridentfb_copyarea cfb_copyarea
515 #endif /* CONFIG_FB_TRIDENT_ACCEL */
516
517
518 /*
519 * Hardware access functions
520 */
521
522 static inline unsigned char read3X4(int reg)
523 {
524 struct tridentfb_par *par = (struct tridentfb_par *)fb_info.par;
525 writeb(reg, par->io_virt + CRT + 4);
526 return readb(par->io_virt + CRT + 5);
527 }
528
529 static inline void write3X4(int reg, unsigned char val)
530 {
531 struct tridentfb_par *par = (struct tridentfb_par *)fb_info.par;
532 writeb(reg, par->io_virt + CRT + 4);
533 writeb(val, par->io_virt + CRT + 5);
534 }
535
536 static inline unsigned char read3C4(int reg)
537 {
538 t_outb(reg, 0x3C4);
539 return t_inb(0x3C5);
540 }
541
542 static inline void write3C4(int reg, unsigned char val)
543 {
544 t_outb(reg, 0x3C4);
545 t_outb(val, 0x3C5);
546 }
547
548 static inline unsigned char read3CE(int reg)
549 {
550 t_outb(reg, 0x3CE);
551 return t_inb(0x3CF);
552 }
553
554 static inline void writeAttr(int reg, unsigned char val)
555 {
556 readb(((struct tridentfb_par *)fb_info.par)->io_virt + CRT + 0x0A); /* flip-flop to index */
557 t_outb(reg, 0x3C0);
558 t_outb(val, 0x3C0);
559 }
560
561 static inline void write3CE(int reg, unsigned char val)
562 {
563 t_outb(reg, 0x3CE);
564 t_outb(val, 0x3CF);
565 }
566
567 static void enable_mmio(void)
568 {
569 unsigned char tmp;
570
571 /* Goto New Mode */
572 outb(0x0B, 0x3C4);
573 inb(0x3C5);
574
575 /* Unprotect registers */
576 outb(NewMode1, 0x3C4);
577 tmp = inb(0x3C5);
578 outb(0x80, 0x3C5);
579
580 /* Enable MMIO */
581 outb(PCIReg, 0x3D4);
582 outb(inb(0x3D5) | 0x01, 0x3D5);
583
584 t_outb(NewMode1, 0x3C4);
585 t_outb(tmp, 0x3C5);
586 }
587
588 static void disable_mmio(void)
589 {
590 unsigned char tmp;
591
592 /* Goto New Mode */
593 t_outb(0x0B, 0x3C4);
594 t_inb(0x3C5);
595
596 /* Unprotect registers */
597 t_outb(NewMode1, 0x3C4);
598 tmp = t_inb(0x3C5);
599 t_outb(0x80, 0x3C5);
600
601 /* Disable MMIO */
602 t_outb(PCIReg, 0x3D4);
603 t_outb(t_inb(0x3D5) & ~0x01, 0x3D5);
604
605 outb(NewMode1, 0x3C4);
606 outb(tmp, 0x3C5);
607 }
608
609 #define crtc_unlock() write3X4(CRTVSyncEnd, read3X4(CRTVSyncEnd) & 0x7F)
610
611 /* Return flat panel's maximum x resolution */
612 static int __devinit get_nativex(void)
613 {
614 int x, y, tmp;
615
616 if (nativex)
617 return nativex;
618
619 tmp = (read3CE(VertStretch) >> 4) & 3;
620
621 switch (tmp) {
622 case 0:
623 x = 1280; y = 1024;
624 break;
625 case 2:
626 x = 1024; y = 768;
627 break;
628 case 3:
629 x = 800; y = 600;
630 break;
631 case 4:
632 x = 1400; y = 1050;
633 break;
634 case 1:
635 default:
636 x = 640; y = 480;
637 break;
638 }
639
640 output("%dx%d flat panel found\n", x, y);
641 return x;
642 }
643
644 /* Set pitch */
645 static void set_lwidth(int width)
646 {
647 write3X4(Offset, width & 0xFF);
648 write3X4(AddColReg,
649 (read3X4(AddColReg) & 0xCF) | ((width & 0x300) >> 4));
650 }
651
652 /* For resolutions smaller than FP resolution stretch */
653 static void screen_stretch(void)
654 {
655 if (chip_id != CYBERBLADEXPAi1)
656 write3CE(BiosReg, 0);
657 else
658 write3CE(BiosReg, 8);
659 write3CE(VertStretch, (read3CE(VertStretch) & 0x7C) | 1);
660 write3CE(HorStretch, (read3CE(HorStretch) & 0x7C) | 1);
661 }
662
663 /* For resolutions smaller than FP resolution center */
664 static void screen_center(void)
665 {
666 write3CE(VertStretch, (read3CE(VertStretch) & 0x7C) | 0x80);
667 write3CE(HorStretch, (read3CE(HorStretch) & 0x7C) | 0x80);
668 }
669
670 /* Address of first shown pixel in display memory */
671 static void set_screen_start(int base)
672 {
673 write3X4(StartAddrLow, base & 0xFF);
674 write3X4(StartAddrHigh, (base & 0xFF00) >> 8);
675 write3X4(CRTCModuleTest,
676 (read3X4(CRTCModuleTest) & 0xDF) | ((base & 0x10000) >> 11));
677 write3X4(CRTHiOrd,
678 (read3X4(CRTHiOrd) & 0xF8) | ((base & 0xE0000) >> 17));
679 }
680
681 /* Use 20.12 fixed-point for NTSC value and frequency calculation */
682 #define calc_freq(n, m, k) ( ((unsigned long)0xE517 * (n + 8) / ((m + 2) * (1 << k))) >> 12 )
683
684 /* Set dotclock frequency */
685 static void set_vclk(int freq)
686 {
687 int m, n, k;
688 int f, fi, d, di;
689 unsigned char lo = 0, hi = 0;
690
691 d = 20;
692 for (k = 2; k >= 0; k--)
693 for (m = 0; m < 63; m++)
694 for (n = 0; n < 128; n++) {
695 fi = calc_freq(n, m, k);
696 if ((di = abs(fi - freq)) < d) {
697 d = di;
698 f = fi;
699 lo = n;
700 hi = (k << 6) | m;
701 }
702 }
703 if (chip3D) {
704 write3C4(ClockHigh, hi);
705 write3C4(ClockLow, lo);
706 } else {
707 outb(lo, 0x43C8);
708 outb(hi, 0x43C9);
709 }
710 debug("VCLK = %X %X\n", hi, lo);
711 }
712
713 /* Set number of lines for flat panels*/
714 static void set_number_of_lines(int lines)
715 {
716 int tmp = read3CE(CyberEnhance) & 0x8F;
717 if (lines > 1024)
718 tmp |= 0x50;
719 else if (lines > 768)
720 tmp |= 0x30;
721 else if (lines > 600)
722 tmp |= 0x20;
723 else if (lines > 480)
724 tmp |= 0x10;
725 write3CE(CyberEnhance, tmp);
726 }
727
728 /*
729 * If we see that FP is active we assume we have one.
730 * Otherwise we have a CRT display.User can override.
731 */
732 static unsigned int __devinit get_displaytype(void)
733 {
734 if (fp)
735 return DISPLAY_FP;
736 if (crt || !chipcyber)
737 return DISPLAY_CRT;
738 return (read3CE(FPConfig) & 0x10) ? DISPLAY_FP : DISPLAY_CRT;
739 }
740
741 /* Try detecting the video memory size */
742 static unsigned int __devinit get_memsize(void)
743 {
744 unsigned char tmp, tmp2;
745 unsigned int k;
746
747 /* If memory size provided by user */
748 if (memsize)
749 k = memsize * Kb;
750 else
751 switch (chip_id) {
752 case CYBER9525DVD:
753 k = 2560 * Kb;
754 break;
755 default:
756 tmp = read3X4(SPR) & 0x0F;
757 switch (tmp) {
758
759 case 0x01:
760 k = 512;
761 break;
762 case 0x02:
763 k = 6 * Mb; /* XP */
764 break;
765 case 0x03:
766 k = 1 * Mb;
767 break;
768 case 0x04:
769 k = 8 * Mb;
770 break;
771 case 0x06:
772 k = 10 * Mb; /* XP */
773 break;
774 case 0x07:
775 k = 2 * Mb;
776 break;
777 case 0x08:
778 k = 12 * Mb; /* XP */
779 break;
780 case 0x0A:
781 k = 14 * Mb; /* XP */
782 break;
783 case 0x0C:
784 k = 16 * Mb; /* XP */
785 break;
786 case 0x0E: /* XP */
787
788 tmp2 = read3C4(0xC1);
789 switch (tmp2) {
790 case 0x00:
791 k = 20 * Mb;
792 break;
793 case 0x01:
794 k = 24 * Mb;
795 break;
796 case 0x10:
797 k = 28 * Mb;
798 break;
799 case 0x11:
800 k = 32 * Mb;
801 break;
802 default:
803 k = 1 * Mb;
804 break;
805 }
806 break;
807
808 case 0x0F:
809 k = 4 * Mb;
810 break;
811 default:
812 k = 1 * Mb;
813 break;
814 }
815 }
816
817 k -= memdiff * Kb;
818 output("framebuffer size = %d Kb\n", k / Kb);
819 return k;
820 }
821
822 /* See if we can handle the video mode described in var */
823 static int tridentfb_check_var(struct fb_var_screeninfo *var,
824 struct fb_info *info)
825 {
826 int bpp = var->bits_per_pixel;
827 debug("enter\n");
828
829 /* check color depth */
830 if (bpp == 24)
831 bpp = var->bits_per_pixel = 32;
832 /* check whether resolution fits on panel and in memory */
833 if (flatpanel && nativex && var->xres > nativex)
834 return -EINVAL;
835 if (var->xres * var->yres_virtual * bpp / 8 > info->fix.smem_len)
836 return -EINVAL;
837
838 switch (bpp) {
839 case 8:
840 var->red.offset = 0;
841 var->green.offset = 0;
842 var->blue.offset = 0;
843 var->red.length = 6;
844 var->green.length = 6;
845 var->blue.length = 6;
846 break;
847 case 16:
848 var->red.offset = 11;
849 var->green.offset = 5;
850 var->blue.offset = 0;
851 var->red.length = 5;
852 var->green.length = 6;
853 var->blue.length = 5;
854 break;
855 case 32:
856 var->red.offset = 16;
857 var->green.offset = 8;
858 var->blue.offset = 0;
859 var->red.length = 8;
860 var->green.length = 8;
861 var->blue.length = 8;
862 break;
863 default:
864 return -EINVAL;
865 }
866 debug("exit\n");
867
868 return 0;
869
870 }
871
872 /* Pan the display */
873 static int tridentfb_pan_display(struct fb_var_screeninfo *var,
874 struct fb_info *info)
875 {
876 unsigned int offset;
877
878 debug("enter\n");
879 offset = (var->xoffset + (var->yoffset * var->xres))
880 * var->bits_per_pixel / 32;
881 info->var.xoffset = var->xoffset;
882 info->var.yoffset = var->yoffset;
883 set_screen_start(offset);
884 debug("exit\n");
885 return 0;
886 }
887
888 #define shadowmode_on() write3CE(CyberControl, read3CE(CyberControl) | 0x81)
889 #define shadowmode_off() write3CE(CyberControl, read3CE(CyberControl) & 0x7E)
890
891 /* Set the hardware to the requested video mode */
892 static int tridentfb_set_par(struct fb_info *info)
893 {
894 struct tridentfb_par *par = (struct tridentfb_par *)(info->par);
895 u32 htotal, hdispend, hsyncstart, hsyncend, hblankstart, hblankend;
896 u32 vtotal, vdispend, vsyncstart, vsyncend, vblankstart, vblankend;
897 struct fb_var_screeninfo *var = &info->var;
898 int bpp = var->bits_per_pixel;
899 unsigned char tmp;
900 debug("enter\n");
901 hdispend = var->xres / 8 - 1;
902 hsyncstart = (var->xres + var->right_margin) / 8;
903 hsyncend = var->hsync_len / 8;
904 htotal =
905 (var->xres + var->left_margin + var->right_margin +
906 var->hsync_len) / 8 - 10;
907 hblankstart = hdispend + 1;
908 hblankend = htotal + 5;
909
910 vdispend = var->yres - 1;
911 vsyncstart = var->yres + var->lower_margin;
912 vsyncend = var->vsync_len;
913 vtotal = var->upper_margin + vsyncstart + vsyncend - 2;
914 vblankstart = var->yres;
915 vblankend = vtotal + 2;
916
917 enable_mmio();
918 crtc_unlock();
919 write3CE(CyberControl, 8);
920
921 if (flatpanel && var->xres < nativex) {
922 /*
923 * on flat panels with native size larger
924 * than requested resolution decide whether
925 * we stretch or center
926 */
927 t_outb(0xEB, 0x3C2);
928
929 shadowmode_on();
930
931 if (center)
932 screen_center();
933 else if (stretch)
934 screen_stretch();
935
936 } else {
937 t_outb(0x2B, 0x3C2);
938 write3CE(CyberControl, 8);
939 }
940
941 /* vertical timing values */
942 write3X4(CRTVTotal, vtotal & 0xFF);
943 write3X4(CRTVDispEnd, vdispend & 0xFF);
944 write3X4(CRTVSyncStart, vsyncstart & 0xFF);
945 write3X4(CRTVSyncEnd, (vsyncend & 0x0F));
946 write3X4(CRTVBlankStart, vblankstart & 0xFF);
947 write3X4(CRTVBlankEnd, 0 /* p->vblankend & 0xFF */ );
948
949 /* horizontal timing values */
950 write3X4(CRTHTotal, htotal & 0xFF);
951 write3X4(CRTHDispEnd, hdispend & 0xFF);
952 write3X4(CRTHSyncStart, hsyncstart & 0xFF);
953 write3X4(CRTHSyncEnd, (hsyncend & 0x1F) | ((hblankend & 0x20) << 2));
954 write3X4(CRTHBlankStart, hblankstart & 0xFF);
955 write3X4(CRTHBlankEnd, 0 /* (p->hblankend & 0x1F) */ );
956
957 /* higher bits of vertical timing values */
958 tmp = 0x10;
959 if (vtotal & 0x100) tmp |= 0x01;
960 if (vdispend & 0x100) tmp |= 0x02;
961 if (vsyncstart & 0x100) tmp |= 0x04;
962 if (vblankstart & 0x100) tmp |= 0x08;
963
964 if (vtotal & 0x200) tmp |= 0x20;
965 if (vdispend & 0x200) tmp |= 0x40;
966 if (vsyncstart & 0x200) tmp |= 0x80;
967 write3X4(CRTOverflow, tmp);
968
969 tmp = read3X4(CRTHiOrd) | 0x08; /* line compare bit 10 */
970 if (vtotal & 0x400) tmp |= 0x80;
971 if (vblankstart & 0x400) tmp |= 0x40;
972 if (vsyncstart & 0x400) tmp |= 0x20;
973 if (vdispend & 0x400) tmp |= 0x10;
974 write3X4(CRTHiOrd, tmp);
975
976 tmp = 0;
977 if (htotal & 0x800) tmp |= 0x800 >> 11;
978 if (hblankstart & 0x800) tmp |= 0x800 >> 7;
979 write3X4(HorizOverflow, tmp);
980
981 tmp = 0x40;
982 if (vblankstart & 0x200) tmp |= 0x20;
983 //FIXME if (info->var.vmode & FB_VMODE_DOUBLE) tmp |= 0x80; /* double scan for 200 line modes */
984 write3X4(CRTMaxScanLine, tmp);
985
986 write3X4(CRTLineCompare, 0xFF);
987 write3X4(CRTPRowScan, 0);
988 write3X4(CRTModeControl, 0xC3);
989
990 write3X4(LinearAddReg, 0x20); /* enable linear addressing */
991
992 tmp = (info->var.vmode & FB_VMODE_INTERLACED) ? 0x84 : 0x80;
993 write3X4(CRTCModuleTest, tmp); /* enable access extended memory */
994
995 write3X4(GraphEngReg, 0x80); /* enable GE for text acceleration */
996
997 #ifdef CONFIG_FB_TRIDENT_ACCEL
998 acc->init_accel(info->var.xres, bpp);
999 #endif
1000
1001 switch (bpp) {
1002 case 8:
1003 tmp = 0x00;
1004 break;
1005 case 16:
1006 tmp = 0x05;
1007 break;
1008 case 24:
1009 tmp = 0x29;
1010 break;
1011 case 32:
1012 tmp = 0x09;
1013 break;
1014 }
1015
1016 write3X4(PixelBusReg, tmp);
1017
1018 tmp = 0x10;
1019 if (chipcyber)
1020 tmp |= 0x20;
1021 write3X4(DRAMControl, tmp); /* both IO, linear enable */
1022
1023 write3X4(InterfaceSel, read3X4(InterfaceSel) | 0x40);
1024 write3X4(Performance, 0x92);
1025 write3X4(PCIReg, 0x07); /* MMIO & PCI read and write burst enable */
1026
1027 /* convert from picoseconds to MHz */
1028 par->vclk = 1000000 / info->var.pixclock;
1029 if (bpp == 32)
1030 par->vclk *= 2;
1031 set_vclk(par->vclk);
1032
1033 write3C4(0, 3);
1034 write3C4(1, 1); /* set char clock 8 dots wide */
1035 write3C4(2, 0x0F); /* enable 4 maps because needed in chain4 mode */
1036 write3C4(3, 0);
1037 write3C4(4, 0x0E); /* memory mode enable bitmaps ?? */
1038
1039 write3CE(MiscExtFunc, (bpp == 32) ? 0x1A : 0x12); /* divide clock by 2 if 32bpp */
1040 /* chain4 mode display and CPU path */
1041 write3CE(0x5, 0x40); /* no CGA compat, allow 256 col */
1042 write3CE(0x6, 0x05); /* graphics mode */
1043 write3CE(0x7, 0x0F); /* planes? */
1044
1045 if (chip_id == CYBERBLADEXPAi1) {
1046 /* This fixes snow-effect in 32 bpp */
1047 write3X4(CRTHSyncStart, 0x84);
1048 }
1049
1050 writeAttr(0x10, 0x41); /* graphics mode and support 256 color modes */
1051 writeAttr(0x12, 0x0F); /* planes */
1052 writeAttr(0x13, 0); /* horizontal pel panning */
1053
1054 /* colors */
1055 for (tmp = 0; tmp < 0x10; tmp++)
1056 writeAttr(tmp, tmp);
1057 readb(par->io_virt + CRT + 0x0A); /* flip-flop to index */
1058 t_outb(0x20, 0x3C0); /* enable attr */
1059
1060 switch (bpp) {
1061 case 8:
1062 tmp = 0;
1063 break;
1064 case 15:
1065 tmp = 0x10;
1066 break;
1067 case 16:
1068 tmp = 0x30;
1069 break;
1070 case 24:
1071 case 32:
1072 tmp = 0xD0;
1073 break;
1074 }
1075
1076 t_inb(0x3C8);
1077 t_inb(0x3C6);
1078 t_inb(0x3C6);
1079 t_inb(0x3C6);
1080 t_inb(0x3C6);
1081 t_outb(tmp, 0x3C6);
1082 t_inb(0x3C8);
1083
1084 if (flatpanel)
1085 set_number_of_lines(info->var.yres);
1086 set_lwidth(info->var.xres * bpp / (4 * 16));
1087 info->fix.visual = (bpp == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
1088 info->fix.line_length = info->var.xres * (bpp >> 3);
1089 info->cmap.len = (bpp == 8) ? 256 : 16;
1090 debug("exit\n");
1091 return 0;
1092 }
1093
1094 /* Set one color register */
1095 static int tridentfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1096 unsigned blue, unsigned transp,
1097 struct fb_info *info)
1098 {
1099 int bpp = info->var.bits_per_pixel;
1100
1101 if (regno >= info->cmap.len)
1102 return 1;
1103
1104 if (bpp == 8) {
1105 t_outb(0xFF, 0x3C6);
1106 t_outb(regno, 0x3C8);
1107
1108 t_outb(red >> 10, 0x3C9);
1109 t_outb(green >> 10, 0x3C9);
1110 t_outb(blue >> 10, 0x3C9);
1111
1112 } else if (regno < 16) {
1113 if (bpp == 16) { /* RGB 565 */
1114 u32 col;
1115
1116 col = (red & 0xF800) | ((green & 0xFC00) >> 5) |
1117 ((blue & 0xF800) >> 11);
1118 col |= col << 16;
1119 ((u32 *)(info->pseudo_palette))[regno] = col;
1120 } else if (bpp == 32) /* ARGB 8888 */
1121 ((u32*)info->pseudo_palette)[regno] =
1122 ((transp & 0xFF00) << 16) |
1123 ((red & 0xFF00) << 8) |
1124 ((green & 0xFF00)) |
1125 ((blue & 0xFF00) >> 8);
1126 }
1127
1128 /* debug("exit\n"); */
1129 return 0;
1130 }
1131
1132 /* Try blanking the screen.For flat panels it does nothing */
1133 static int tridentfb_blank(int blank_mode, struct fb_info *info)
1134 {
1135 unsigned char PMCont, DPMSCont;
1136
1137 debug("enter\n");
1138 if (flatpanel)
1139 return 0;
1140 t_outb(0x04, 0x83C8); /* Read DPMS Control */
1141 PMCont = t_inb(0x83C6) & 0xFC;
1142 DPMSCont = read3CE(PowerStatus) & 0xFC;
1143 switch (blank_mode) {
1144 case FB_BLANK_UNBLANK:
1145 /* Screen: On, HSync: On, VSync: On */
1146 case FB_BLANK_NORMAL:
1147 /* Screen: Off, HSync: On, VSync: On */
1148 PMCont |= 0x03;
1149 DPMSCont |= 0x00;
1150 break;
1151 case FB_BLANK_HSYNC_SUSPEND:
1152 /* Screen: Off, HSync: Off, VSync: On */
1153 PMCont |= 0x02;
1154 DPMSCont |= 0x01;
1155 break;
1156 case FB_BLANK_VSYNC_SUSPEND:
1157 /* Screen: Off, HSync: On, VSync: Off */
1158 PMCont |= 0x02;
1159 DPMSCont |= 0x02;
1160 break;
1161 case FB_BLANK_POWERDOWN:
1162 /* Screen: Off, HSync: Off, VSync: Off */
1163 PMCont |= 0x00;
1164 DPMSCont |= 0x03;
1165 break;
1166 }
1167
1168 write3CE(PowerStatus, DPMSCont);
1169 t_outb(4, 0x83C8);
1170 t_outb(PMCont, 0x83C6);
1171
1172 debug("exit\n");
1173
1174 /* let fbcon do a softblank for us */
1175 return (blank_mode == FB_BLANK_NORMAL) ? 1 : 0;
1176 }
1177
1178 static struct fb_ops tridentfb_ops = {
1179 .owner = THIS_MODULE,
1180 .fb_setcolreg = tridentfb_setcolreg,
1181 .fb_pan_display = tridentfb_pan_display,
1182 .fb_blank = tridentfb_blank,
1183 .fb_check_var = tridentfb_check_var,
1184 .fb_set_par = tridentfb_set_par,
1185 .fb_fillrect = tridentfb_fillrect,
1186 .fb_copyarea = tridentfb_copyarea,
1187 .fb_imageblit = cfb_imageblit,
1188 };
1189
1190 static int __devinit trident_pci_probe(struct pci_dev * dev,
1191 const struct pci_device_id * id)
1192 {
1193 int err;
1194 unsigned char revision;
1195
1196 err = pci_enable_device(dev);
1197 if (err)
1198 return err;
1199
1200 chip_id = id->device;
1201
1202 if (chip_id == CYBERBLADEi1)
1203 output("*** Please do use cyblafb, Cyberblade/i1 support "
1204 "will soon be removed from tridentfb!\n");
1205
1206
1207 /* If PCI id is 0x9660 then further detect chip type */
1208
1209 if (chip_id == TGUI9660) {
1210 outb(RevisionID, 0x3C4);
1211 revision = inb(0x3C5);
1212
1213 switch (revision) {
1214 case 0x22:
1215 case 0x23:
1216 chip_id = CYBER9397;
1217 break;
1218 case 0x2A:
1219 chip_id = CYBER9397DVD;
1220 break;
1221 case 0x30:
1222 case 0x33:
1223 case 0x34:
1224 case 0x35:
1225 case 0x38:
1226 case 0x3A:
1227 case 0xB3:
1228 chip_id = CYBER9385;
1229 break;
1230 case 0x40 ... 0x43:
1231 chip_id = CYBER9382;
1232 break;
1233 case 0x4A:
1234 chip_id = CYBER9388;
1235 break;
1236 default:
1237 break;
1238 }
1239 }
1240
1241 chip3D = is3Dchip(chip_id);
1242 chipcyber = iscyber(chip_id);
1243
1244 if (is_xp(chip_id)) {
1245 acc = &accel_xp;
1246 } else if (is_blade(chip_id)) {
1247 acc = &accel_blade;
1248 } else {
1249 acc = &accel_image;
1250 }
1251
1252 /* acceleration is on by default for 3D chips */
1253 defaultaccel = chip3D && !noaccel;
1254
1255 fb_info.par = &default_par;
1256
1257 /* setup MMIO region */
1258 tridentfb_fix.mmio_start = pci_resource_start(dev, 1);
1259 tridentfb_fix.mmio_len = chip3D ? 0x20000 : 0x10000;
1260
1261 if (!request_mem_region(tridentfb_fix.mmio_start, tridentfb_fix.mmio_len, "tridentfb")) {
1262 debug("request_region failed!\n");
1263 return -1;
1264 }
1265
1266 default_par.io_virt = ioremap_nocache(tridentfb_fix.mmio_start, tridentfb_fix.mmio_len);
1267
1268 if (!default_par.io_virt) {
1269 debug("ioremap failed\n");
1270 err = -1;
1271 goto out_unmap1;
1272 }
1273
1274 enable_mmio();
1275
1276 /* setup framebuffer memory */
1277 tridentfb_fix.smem_start = pci_resource_start(dev, 0);
1278 tridentfb_fix.smem_len = get_memsize();
1279
1280 if (!request_mem_region(tridentfb_fix.smem_start, tridentfb_fix.smem_len, "tridentfb")) {
1281 debug("request_mem_region failed!\n");
1282 disable_mmio();
1283 err = -1;
1284 goto out_unmap1;
1285 }
1286
1287 fb_info.screen_base = ioremap_nocache(tridentfb_fix.smem_start,
1288 tridentfb_fix.smem_len);
1289
1290 if (!fb_info.screen_base) {
1291 debug("ioremap failed\n");
1292 err = -1;
1293 goto out_unmap2;
1294 }
1295
1296 output("%s board found\n", pci_name(dev));
1297 displaytype = get_displaytype();
1298
1299 if (flatpanel)
1300 nativex = get_nativex();
1301
1302 fb_info.fix = tridentfb_fix;
1303 fb_info.fbops = &tridentfb_ops;
1304
1305
1306 fb_info.flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1307 #ifdef CONFIG_FB_TRIDENT_ACCEL
1308 fb_info.flags |= FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT;
1309 #endif
1310 fb_info.pseudo_palette = pseudo_pal;
1311
1312 if (!fb_find_mode(&default_var, &fb_info, mode, NULL, 0, NULL, bpp)) {
1313 err = -EINVAL;
1314 goto out_unmap2;
1315 }
1316 err = fb_alloc_cmap(&fb_info.cmap, 256, 0);
1317 if (err < 0)
1318 goto out_unmap2;
1319
1320 if (defaultaccel && acc)
1321 default_var.accel_flags |= FB_ACCELF_TEXT;
1322 else
1323 default_var.accel_flags &= ~FB_ACCELF_TEXT;
1324 default_var.activate |= FB_ACTIVATE_NOW;
1325 fb_info.var = default_var;
1326 fb_info.device = &dev->dev;
1327 if (register_framebuffer(&fb_info) < 0) {
1328 printk(KERN_ERR "tridentfb: could not register Trident framebuffer\n");
1329 fb_dealloc_cmap(&fb_info.cmap);
1330 err = -EINVAL;
1331 goto out_unmap2;
1332 }
1333 output("fb%d: %s frame buffer device %dx%d-%dbpp\n",
1334 fb_info.node, fb_info.fix.id, default_var.xres,
1335 default_var.yres, default_var.bits_per_pixel);
1336 return 0;
1337
1338 out_unmap2:
1339 if (fb_info.screen_base)
1340 iounmap(fb_info.screen_base);
1341 release_mem_region(tridentfb_fix.smem_start, tridentfb_fix.smem_len);
1342 disable_mmio();
1343 out_unmap1:
1344 if (default_par.io_virt)
1345 iounmap(default_par.io_virt);
1346 release_mem_region(tridentfb_fix.mmio_start, tridentfb_fix.mmio_len);
1347 return err;
1348 }
1349
1350 static void __devexit trident_pci_remove(struct pci_dev *dev)
1351 {
1352 struct tridentfb_par *par = (struct tridentfb_par*)fb_info.par;
1353 unregister_framebuffer(&fb_info);
1354 iounmap(par->io_virt);
1355 iounmap(fb_info.screen_base);
1356 release_mem_region(tridentfb_fix.smem_start, tridentfb_fix.smem_len);
1357 release_mem_region(tridentfb_fix.mmio_start, tridentfb_fix.mmio_len);
1358 }
1359
1360 /* List of boards that we are trying to support */
1361 static struct pci_device_id trident_devices[] = {
1362 {PCI_VENDOR_ID_TRIDENT, BLADE3D, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1363 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEi7, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1364 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEi7D, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1365 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEi1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1366 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEi1D, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1367 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEAi1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1368 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEAi1D, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1369 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEE4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1370 {PCI_VENDOR_ID_TRIDENT, TGUI9660, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1371 {PCI_VENDOR_ID_TRIDENT, IMAGE975, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1372 {PCI_VENDOR_ID_TRIDENT, IMAGE985, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1373 {PCI_VENDOR_ID_TRIDENT, CYBER9320, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1374 {PCI_VENDOR_ID_TRIDENT, CYBER9388, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1375 {PCI_VENDOR_ID_TRIDENT, CYBER9520, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1376 {PCI_VENDOR_ID_TRIDENT, CYBER9525DVD, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1377 {PCI_VENDOR_ID_TRIDENT, CYBER9397, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1378 {PCI_VENDOR_ID_TRIDENT, CYBER9397DVD, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1379 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEXPAi1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1380 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEXPm8, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1381 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEXPm16, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1382 {0,}
1383 };
1384
1385 MODULE_DEVICE_TABLE(pci, trident_devices);
1386
1387 static struct pci_driver tridentfb_pci_driver = {
1388 .name = "tridentfb",
1389 .id_table = trident_devices,
1390 .probe = trident_pci_probe,
1391 .remove = __devexit_p(trident_pci_remove)
1392 };
1393
1394 /*
1395 * Parse user specified options (`video=trident:')
1396 * example:
1397 * video=trident:800x600,bpp=16,noaccel
1398 */
1399 #ifndef MODULE
1400 static int tridentfb_setup(char *options)
1401 {
1402 char *opt;
1403 if (!options || !*options)
1404 return 0;
1405 while ((opt = strsep(&options, ",")) != NULL) {
1406 if (!*opt)
1407 continue;
1408 if (!strncmp(opt, "noaccel", 7))
1409 noaccel = 1;
1410 else if (!strncmp(opt, "fp", 2))
1411 displaytype = DISPLAY_FP;
1412 else if (!strncmp(opt, "crt", 3))
1413 displaytype = DISPLAY_CRT;
1414 else if (!strncmp(opt, "bpp=", 4))
1415 bpp = simple_strtoul(opt + 4, NULL, 0);
1416 else if (!strncmp(opt, "center", 6))
1417 center = 1;
1418 else if (!strncmp(opt, "stretch", 7))
1419 stretch = 1;
1420 else if (!strncmp(opt, "memsize=", 8))
1421 memsize = simple_strtoul(opt + 8, NULL, 0);
1422 else if (!strncmp(opt, "memdiff=", 8))
1423 memdiff = simple_strtoul(opt + 8, NULL, 0);
1424 else if (!strncmp(opt, "nativex=", 8))
1425 nativex = simple_strtoul(opt + 8, NULL, 0);
1426 else
1427 mode = opt;
1428 }
1429 return 0;
1430 }
1431 #endif
1432
1433 static int __init tridentfb_init(void)
1434 {
1435 #ifndef MODULE
1436 char *option = NULL;
1437
1438 if (fb_get_options("tridentfb", &option))
1439 return -ENODEV;
1440 tridentfb_setup(option);
1441 #endif
1442 output("Trident framebuffer %s initializing\n", VERSION);
1443 return pci_register_driver(&tridentfb_pci_driver);
1444 }
1445
1446 static void __exit tridentfb_exit(void)
1447 {
1448 pci_unregister_driver(&tridentfb_pci_driver);
1449 }
1450
1451 module_init(tridentfb_init);
1452 module_exit(tridentfb_exit);
1453
1454 MODULE_AUTHOR("Jani Monoses <jani@iv.ro>");
1455 MODULE_DESCRIPTION("Framebuffer driver for Trident cards");
1456 MODULE_LICENSE("GPL");
1457
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