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[PATCH] mempool: add kmalloc allocator
[linux-2.6/mini2440.git] / drivers / video / tridentfb.c
blob9ac2d3171187855286c7869e1ea33f5f0c7cebe2
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 by Alan Hourihane
11 * the FreeVGA project
12 * Francesco Salvestrini <salvestrini@users.sf.net> XP support,code,suggestions
13 * TODO:
14 * timing value tweaking so it looks good on every monitor in every mode
15 * TGUI acceleration
16 */
17
18 #include <linux/config.h>
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
44 static struct fb_var_screeninfo default_var;
45
46 static struct fb_fix_screeninfo tridentfb_fix = {
47 .id = "Trident",
48 .type = FB_TYPE_PACKED_PIXELS,
49 .ypanstep = 1,
50 .visual = FB_VISUAL_PSEUDOCOLOR,
51 .accel = FB_ACCEL_NONE,
52 };
53
54 static int chip_id;
55
56 static int defaultaccel;
57 static int displaytype;
58
59
60 /* defaults which are normally overriden by user values */
61
62 /* video mode */
63 static char * mode = "640x480";
64 static int bpp = 8;
65
66 static int noaccel;
67
68 static int center;
69 static int stretch;
70
71 static int fp;
72 static int crt;
73
74 static int memsize;
75 static int memdiff;
76 static int nativex;
77
78
79 module_param(mode, charp, 0);
80 module_param(bpp, int, 0);
81 module_param(center, int, 0);
82 module_param(stretch, int, 0);
83 module_param(noaccel, int, 0);
84 module_param(memsize, int, 0);
85 module_param(memdiff, int, 0);
86 module_param(nativex, int, 0);
87 module_param(fp, int, 0);
88 module_param(crt, int, 0);
89
90
91 static int chip3D;
92 static int chipcyber;
93
94 static int is3Dchip(int id)
95 {
96 return ((id == BLADE3D) || (id == CYBERBLADEE4) ||
97 (id == CYBERBLADEi7) || (id == CYBERBLADEi7D) ||
98 (id == CYBER9397) || (id == CYBER9397DVD) ||
99 (id == CYBER9520) || (id == CYBER9525DVD) ||
100 (id == IMAGE975) || (id == IMAGE985) ||
101 (id == CYBERBLADEi1) || (id == CYBERBLADEi1D) ||
102 (id == CYBERBLADEAi1) || (id == CYBERBLADEAi1D) ||
103 (id == CYBERBLADEXPm8) || (id == CYBERBLADEXPm16) ||
104 (id == CYBERBLADEXPAi1));
105 }
106
107 static int iscyber(int id)
108 {
109 switch (id) {
110 case CYBER9388:
111 case CYBER9382:
112 case CYBER9385:
113 case CYBER9397:
114 case CYBER9397DVD:
115 case CYBER9520:
116 case CYBER9525DVD:
117 case CYBERBLADEE4:
118 case CYBERBLADEi7D:
119 case CYBERBLADEi1:
120 case CYBERBLADEi1D:
121 case CYBERBLADEAi1:
122 case CYBERBLADEAi1D:
123 case CYBERBLADEXPAi1:
124 return 1;
125
126 case CYBER9320:
127 case TGUI9660:
128 case IMAGE975:
129 case IMAGE985:
130 case BLADE3D:
131 case CYBERBLADEi7: /* VIA MPV4 integrated version */
132
133 default:
134 /* case CYBERBLDAEXPm8: Strange */
135 /* case CYBERBLDAEXPm16: Strange */
136 return 0;
137 }
138 }
139
140 #define CRT 0x3D0 //CRTC registers offset for color display
141
142 #ifndef TRIDENT_MMIO
143 #define TRIDENT_MMIO 1
144 #endif
145
146 #if TRIDENT_MMIO
147 #define t_outb(val,reg) writeb(val,((struct tridentfb_par *)(fb_info.par))->io_virt + reg)
148 #define t_inb(reg) readb(((struct tridentfb_par*)(fb_info.par))->io_virt + reg)
149 #else
150 #define t_outb(val,reg) outb(val,reg)
151 #define t_inb(reg) inb(reg)
152 #endif
153
154
155 static struct accel_switch {
156 void (*init_accel)(int,int);
157 void (*wait_engine)(void);
158 void (*fill_rect)(__u32,__u32,__u32,__u32,__u32,__u32);
159 void (*copy_rect)(__u32,__u32,__u32,__u32,__u32,__u32);
160 } *acc;
161
162 #define writemmr(r,v) writel(v, ((struct tridentfb_par *)fb_info.par)->io_virt + r)
163 #define readmmr(r) readl(((struct tridentfb_par *)fb_info.par)->io_virt + r)
164
165
166
167 /*
168 * Blade specific acceleration.
169 */
170
171 #define point(x,y) ((y)<<16|(x))
172 #define STA 0x2120
173 #define CMD 0x2144
174 #define ROP 0x2148
175 #define CLR 0x2160
176 #define SR1 0x2100
177 #define SR2 0x2104
178 #define DR1 0x2108
179 #define DR2 0x210C
180
181 #define ROP_S 0xCC
182
183 static void blade_init_accel(int pitch,int bpp)
184 {
185 int v1 = (pitch>>3)<<20;
186 int tmp = 0,v2;
187 switch (bpp) {
188 case 8:tmp = 0;break;
189 case 15:tmp = 5;break;
190 case 16:tmp = 1;break;
191 case 24:
192 case 32:tmp = 2;break;
193 }
194 v2 = v1 | (tmp<<29);
195 writemmr(0x21C0,v2);
196 writemmr(0x21C4,v2);
197 writemmr(0x21B8,v2);
198 writemmr(0x21BC,v2);
199 writemmr(0x21D0,v1);
200 writemmr(0x21D4,v1);
201 writemmr(0x21C8,v1);
202 writemmr(0x21CC,v1);
203 writemmr(0x216C,0);
204 }
205
206 static void blade_wait_engine(void)
207 {
208 while(readmmr(STA) & 0xFA800000);
209 }
210
211 static void blade_fill_rect(__u32 x,__u32 y,__u32 w,__u32 h,__u32 c,__u32 rop)
212 {
213 writemmr(CLR,c);
214 writemmr(ROP,rop ? 0x66:ROP_S);
215 writemmr(CMD,0x20000000|1<<19|1<<4|2<<2);
216
217 writemmr(DR1,point(x,y));
218 writemmr(DR2,point(x+w-1,y+h-1));
219 }
220
221 static void blade_copy_rect(__u32 x1,__u32 y1,__u32 x2,__u32 y2,__u32 w,__u32 h)
222 {
223 __u32 s1,s2,d1,d2;
224 int direction = 2;
225 s1 = point(x1,y1);
226 s2 = point(x1+w-1,y1+h-1);
227 d1 = point(x2,y2);
228 d2 = point(x2+w-1,y2+h-1);
229
230 if ((y1 > y2) || ((y1 == y2) && (x1 > x2)))
231 direction = 0;
232
233
234 writemmr(ROP,ROP_S);
235 writemmr(CMD,0xE0000000|1<<19|1<<4|1<<2|direction);
236
237 writemmr(SR1,direction?s2:s1);
238 writemmr(SR2,direction?s1:s2);
239 writemmr(DR1,direction?d2:d1);
240 writemmr(DR2,direction?d1:d2);
241 }
242
243 static struct accel_switch accel_blade = {
244 blade_init_accel,
245 blade_wait_engine,
246 blade_fill_rect,
247 blade_copy_rect,
248 };
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: x = 0; break;
265 case 16: x = 1; break;
266 case 24: x = 3; break;
267 case 32: x = 2; break;
268 }
269
270 switch (pitch << (bpp >> 3)) {
271 case 8192:
272 case 512: x |= 0x00; break;
273 case 1024: x |= 0x04; break;
274 case 2048: x |= 0x08; break;
275 case 4096: x |= 0x0C; break;
276 }
277
278 t_outb(x,0x2125);
279
280 eng_oper = x | 0x40;
281
282 switch (bpp) {
283 case 8: tmp = 18; break;
284 case 15:
285 case 16: tmp = 19; break;
286 case 24:
287 case 32: tmp = 20; break;
288 }
289
290 v1 = pitch << tmp;
291
292 writemmr(0x2154,v1);
293 writemmr(0x2150,v1);
294 t_outb(3,0x2126);
295 }
296
297 static void xp_wait_engine(void)
298 {
299 int busy;
300 int count, timeout;
301
302 count = 0;
303 timeout = 0;
304 for (;;) {
305 busy = t_inb(STA) & 0x80;
306 if (busy != 0x80)
307 return;
308 count++;
309 if (count == 10000000) {
310 /* Timeout */
311 count = 9990000;
312 timeout++;
313 if (timeout == 8) {
314 /* Reset engine */
315 t_outb(0x00, 0x2120);
316 return;
317 }
318 }
319 }
320 }
321
322 static void xp_fill_rect(__u32 x,__u32 y,__u32 w,__u32 h,__u32 c,__u32 rop)
323 {
324 writemmr(0x2127,ROP_P);
325 writemmr(0x2158,c);
326 writemmr(0x2128,0x4000);
327 writemmr(0x2140,masked_point(h,w));
328 writemmr(0x2138,masked_point(y,x));
329 t_outb(0x01,0x2124);
330 t_outb(eng_oper,0x2125);
331 }
332
333 static void xp_copy_rect(__u32 x1,__u32 y1,__u32 x2,__u32 y2,__u32 w,__u32 h)
334 {
335 int direction;
336 __u32 x1_tmp, x2_tmp, y1_tmp, y2_tmp;
337
338 direction = 0x0004;
339
340 if ((x1 < x2) && (y1 == y2)) {
341 direction |= 0x0200;
342 x1_tmp = x1 + w - 1;
343 x2_tmp = x2 + w - 1;
344 } else {
345 x1_tmp = x1;
346 x2_tmp = x2;
347 }
348
349 if (y1 < y2) {
350 direction |= 0x0100;
351 y1_tmp = y1 + h - 1;
352 y2_tmp = y2 + h - 1;
353 } else {
354 y1_tmp = y1;
355 y2_tmp = y2;
356 }
357
358 writemmr(0x2128,direction);
359 t_outb(ROP_S,0x2127);
360 writemmr(0x213C,masked_point(y1_tmp,x1_tmp));
361 writemmr(0x2138,masked_point(y2_tmp,x2_tmp));
362 writemmr(0x2140,masked_point(h,w));
363 t_outb(0x01,0x2124);
364 }
365
366 static struct accel_switch accel_xp = {
367 xp_init_accel,
368 xp_wait_engine,
369 xp_fill_rect,
370 xp_copy_rect,
371 };
372
373
374 /*
375 * Image specific acceleration functions
376 */
377 static void image_init_accel(int pitch,int bpp)
378 {
379 int tmp = 0;
380 switch (bpp) {
381 case 8:tmp = 0;break;
382 case 15:tmp = 5;break;
383 case 16:tmp = 1;break;
384 case 24:
385 case 32:tmp = 2;break;
386 }
387 writemmr(0x2120, 0xF0000000);
388 writemmr(0x2120, 0x40000000|tmp);
389 writemmr(0x2120, 0x80000000);
390 writemmr(0x2144, 0x00000000);
391 writemmr(0x2148, 0x00000000);
392 writemmr(0x2150, 0x00000000);
393 writemmr(0x2154, 0x00000000);
394 writemmr(0x2120, 0x60000000|(pitch<<16) |pitch);
395 writemmr(0x216C, 0x00000000);
396 writemmr(0x2170, 0x00000000);
397 writemmr(0x217C, 0x00000000);
398 writemmr(0x2120, 0x10000000);
399 writemmr(0x2130, (2047 << 16) | 2047);
400 }
401
402 static void image_wait_engine(void)
403 {
404 while(readmmr(0x2164) & 0xF0000000);
405 }
406
407 static void image_fill_rect(__u32 x, __u32 y, __u32 w, __u32 h, __u32 c, __u32 rop)
408 {
409 writemmr(0x2120,0x80000000);
410 writemmr(0x2120,0x90000000|ROP_S);
411
412 writemmr(0x2144,c);
413
414 writemmr(DR1,point(x,y));
415 writemmr(DR2,point(x+w-1,y+h-1));
416
417 writemmr(0x2124,0x80000000|3<<22|1<<10|1<<9);
418 }
419
420 static void image_copy_rect(__u32 x1,__u32 y1,__u32 x2,__u32 y2,__u32 w,__u32 h)
421 {
422 __u32 s1,s2,d1,d2;
423 int direction = 2;
424 s1 = point(x1,y1);
425 s2 = point(x1+w-1,y1+h-1);
426 d1 = point(x2,y2);
427 d2 = point(x2+w-1,y2+h-1);
428
429 if ((y1 > y2) || ((y1 == y2) && (x1 >x2)))
430 direction = 0;
431
432 writemmr(0x2120,0x80000000);
433 writemmr(0x2120,0x90000000|ROP_S);
434
435 writemmr(SR1,direction?s2:s1);
436 writemmr(SR2,direction?s1:s2);
437 writemmr(DR1,direction?d2:d1);
438 writemmr(DR2,direction?d1:d2);
439 writemmr(0x2124,0x80000000|1<<22|1<<10|1<<7|direction);
440 }
441
442
443 static struct accel_switch accel_image = {
444 image_init_accel,
445 image_wait_engine,
446 image_fill_rect,
447 image_copy_rect,
448 };
449
450 /*
451 * Accel functions called by the upper layers
452 */
453 #ifdef CONFIG_FB_TRIDENT_ACCEL
454 static void tridentfb_fillrect(struct fb_info * info, const struct fb_fillrect *fr)
455 {
456 int bpp = info->var.bits_per_pixel;
457 int col = 0;
458
459 switch (bpp) {
460 default:
461 case 8: col |= fr->color;
462 col |= col << 8;
463 col |= col << 16;
464 break;
465 case 16: col = ((u32 *)(info->pseudo_palette))[fr->color];
466
467 break;
468 case 32: col = ((u32 *)(info->pseudo_palette))[fr->color];
469 break;
470 }
471
472 acc->fill_rect(fr->dx, fr->dy, fr->width, fr->height, col, fr->rop);
473 acc->wait_engine();
474 }
475 static void tridentfb_copyarea(struct fb_info *info, const struct fb_copyarea *ca)
476 {
477 acc->copy_rect(ca->sx,ca->sy,ca->dx,ca->dy,ca->width,ca->height);
478 acc->wait_engine();
479 }
480 #else /* !CONFIG_FB_TRIDENT_ACCEL */
481 #define tridentfb_fillrect cfb_fillrect
482 #define tridentfb_copyarea cfb_copyarea
483 #endif /* CONFIG_FB_TRIDENT_ACCEL */
484
485
486 /*
487 * Hardware access functions
488 */
489
490 static inline unsigned char read3X4(int reg)
491 {
492 struct tridentfb_par * par = (struct tridentfb_par *)fb_info.par;
493 writeb(reg, par->io_virt + CRT + 4);
494 return readb( par->io_virt + CRT + 5);
495 }
496
497 static inline void write3X4(int reg, unsigned char val)
498 {
499 struct tridentfb_par * par = (struct tridentfb_par *)fb_info.par;
500 writeb(reg, par->io_virt + CRT + 4);
501 writeb(val, par->io_virt + CRT + 5);
502 }
503
504 static inline unsigned char read3C4(int reg)
505 {
506 t_outb(reg, 0x3C4);
507 return t_inb(0x3C5);
508 }
509
510 static inline void write3C4(int reg, unsigned char val)
511 {
512 t_outb(reg, 0x3C4);
513 t_outb(val, 0x3C5);
514 }
515
516 static inline unsigned char read3CE(int reg)
517 {
518 t_outb(reg, 0x3CE);
519 return t_inb(0x3CF);
520 }
521
522 static inline void writeAttr(int reg, unsigned char val)
523 {
524 readb(((struct tridentfb_par *)fb_info.par)->io_virt + CRT + 0x0A); //flip-flop to index
525 t_outb(reg, 0x3C0);
526 t_outb(val, 0x3C0);
527 }
528
529 static inline void write3CE(int reg, unsigned char val)
530 {
531 t_outb(reg, 0x3CE);
532 t_outb(val, 0x3CF);
533 }
534
535 static inline void enable_mmio(void)
536 {
537 /* Goto New Mode */
538 outb(0x0B, 0x3C4);
539 inb(0x3C5);
540
541 /* Unprotect registers */
542 outb(NewMode1, 0x3C4);
543 outb(0x80, 0x3C5);
544
545 /* Enable MMIO */
546 outb(PCIReg, 0x3D4);
547 outb(inb(0x3D5) | 0x01, 0x3D5);
548 }
549
550
551 #define crtc_unlock() write3X4(CRTVSyncEnd, read3X4(CRTVSyncEnd) & 0x7F)
552
553 /* Return flat panel's maximum x resolution */
554 static int __init get_nativex(void)
555 {
556 int x,y,tmp;
557
558 if (nativex)
559 return nativex;
560
561 tmp = (read3CE(VertStretch) >> 4) & 3;
562
563 switch (tmp) {
564 case 0: x = 1280; y = 1024; break;
565 case 2: x = 1024; y = 768; break;
566 case 3: x = 800; y = 600; break;
567 case 4: x = 1400; y = 1050; break;
568 case 1:
569 default:x = 640; y = 480; break;
570 }
571
572 output("%dx%d flat panel found\n", x, y);
573 return x;
574 }
575
576 /* Set pitch */
577 static void set_lwidth(int width)
578 {
579 write3X4(Offset, width & 0xFF);
580 write3X4(AddColReg, (read3X4(AddColReg) & 0xCF) | ((width & 0x300) >>4));
581 }
582
583 /* For resolutions smaller than FP resolution stretch */
584 static void screen_stretch(void)
585 {
586 if (chip_id != CYBERBLADEXPAi1)
587 write3CE(BiosReg,0);
588 else
589 write3CE(BiosReg,8);
590 write3CE(VertStretch,(read3CE(VertStretch) & 0x7C) | 1);
591 write3CE(HorStretch,(read3CE(HorStretch) & 0x7C) | 1);
592 }
593
594 /* For resolutions smaller than FP resolution center */
595 static void screen_center(void)
596 {
597 write3CE(VertStretch,(read3CE(VertStretch) & 0x7C) | 0x80);
598 write3CE(HorStretch,(read3CE(HorStretch) & 0x7C) | 0x80);
599 }
600
601 /* Address of first shown pixel in display memory */
602 static void set_screen_start(int base)
603 {
604 write3X4(StartAddrLow, base & 0xFF);
605 write3X4(StartAddrHigh, (base & 0xFF00) >> 8);
606 write3X4(CRTCModuleTest, (read3X4(CRTCModuleTest) & 0xDF) | ((base & 0x10000) >> 11));
607 write3X4(CRTHiOrd, (read3X4(CRTHiOrd) & 0xF8) | ((base & 0xE0000) >> 17));
608 }
609
610 /* Use 20.12 fixed-point for NTSC value and frequency calculation */
611 #define calc_freq(n,m,k) ( ((unsigned long)0xE517 * (n+8) / ((m+2)*(1<<k))) >> 12 )
612
613 /* Set dotclock frequency */
614 static void set_vclk(int freq)
615 {
616 int m,n,k;
617 int f,fi,d,di;
618 unsigned char lo=0,hi=0;
619
620 d = 20;
621 for(k = 2;k>=0;k--)
622 for(m = 0;m<63;m++)
623 for(n = 0;n<128;n++) {
624 fi = calc_freq(n,m,k);
625 if ((di = abs(fi - freq)) < d) {
626 d = di;
627 f = fi;
628 lo = n;
629 hi = (k<<6) | m;
630 }
631 }
632 if (chip3D) {
633 write3C4(ClockHigh,hi);
634 write3C4(ClockLow,lo);
635 } else {
636 outb(lo,0x43C8);
637 outb(hi,0x43C9);
638 }
639 debug("VCLK = %X %X\n",hi,lo);
640 }
641
642 /* Set number of lines for flat panels*/
643 static void set_number_of_lines(int lines)
644 {
645 int tmp = read3CE(CyberEnhance) & 0x8F;
646 if (lines > 1024)
647 tmp |= 0x50;
648 else if (lines > 768)
649 tmp |= 0x30;
650 else if (lines > 600)
651 tmp |= 0x20;
652 else if (lines > 480)
653 tmp |= 0x10;
654 write3CE(CyberEnhance, tmp);
655 }
656
657 /*
658 * If we see that FP is active we assume we have one.
659 * Otherwise we have a CRT display.User can override.
660 */
661 static unsigned int __init get_displaytype(void)
662 {
663 if (fp)
664 return DISPLAY_FP;
665 if (crt || !chipcyber)
666 return DISPLAY_CRT;
667 return (read3CE(FPConfig) & 0x10)?DISPLAY_FP:DISPLAY_CRT;
668 }
669
670 /* Try detecting the video memory size */
671 static unsigned int __init get_memsize(void)
672 {
673 unsigned char tmp, tmp2;
674 unsigned int k;
675
676 /* If memory size provided by user */
677 if (memsize)
678 k = memsize * Kb;
679 else
680 switch (chip_id) {
681 case CYBER9525DVD: k = 2560 * Kb; break;
682 default:
683 tmp = read3X4(SPR) & 0x0F;
684 switch (tmp) {
685
686 case 0x01: k = 512; break;
687 case 0x02: k = 6 * Mb; break; /* XP */
688 case 0x03: k = 1 * Mb; break;
689 case 0x04: k = 8 * Mb; break;
690 case 0x06: k = 10 * Mb; break; /* XP */
691 case 0x07: k = 2 * Mb; break;
692 case 0x08: k = 12 * Mb; break; /* XP */
693 case 0x0A: k = 14 * Mb; break; /* XP */
694 case 0x0C: k = 16 * Mb; break; /* XP */
695 case 0x0E: /* XP */
696
697 tmp2 = read3C4(0xC1);
698 switch (tmp2) {
699 case 0x00: k = 20 * Mb; break;
700 case 0x01: k = 24 * Mb; break;
701 case 0x10: k = 28 * Mb; break;
702 case 0x11: k = 32 * Mb; break;
703 default: k = 1 * Mb; break;
704 }
705 break;
706
707 case 0x0F: k = 4 * Mb; break;
708 default: k = 1 * Mb;
709 }
710 }
711
712 k -= memdiff * Kb;
713 output("framebuffer size = %d Kb\n", k/Kb);
714 return k;
715 }
716
717 /* See if we can handle the video mode described in var */
718 static int tridentfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
719 {
720 int bpp = var->bits_per_pixel;
721 debug("enter\n");
722
723 /* check color depth */
724 if (bpp == 24 )
725 bpp = var->bits_per_pixel = 32;
726 /* check whether resolution fits on panel and in memory*/
727 if (flatpanel && nativex && var->xres > nativex)
728 return -EINVAL;
729 if (var->xres * var->yres_virtual * bpp/8 > info->fix.smem_len)
730 return -EINVAL;
731
732 switch (bpp) {
733 case 8:
734 var->red.offset = 0;
735 var->green.offset = 0;
736 var->blue.offset = 0;
737 var->red.length = 6;
738 var->green.length = 6;
739 var->blue.length = 6;
740 break;
741 case 16:
742 var->red.offset = 11;
743 var->green.offset = 5;
744 var->blue.offset = 0;
745 var->red.length = 5;
746 var->green.length = 6;
747 var->blue.length = 5;
748 break;
749 case 32:
750 var->red.offset = 16;
751 var->green.offset = 8;
752 var->blue.offset = 0;
753 var->red.length = 8;
754 var->green.length = 8;
755 var->blue.length = 8;
756 break;
757 default:
758 return -EINVAL;
759 }
760 debug("exit\n");
761
762 return 0;
763
764 }
765 /* Pan the display */
766 static int tridentfb_pan_display(struct fb_var_screeninfo *var,
767 struct fb_info *info)
768 {
769 unsigned int offset;
770
771 debug("enter\n");
772 offset = (var->xoffset + (var->yoffset * var->xres))
773 * var->bits_per_pixel/32;
774 info->var.xoffset = var->xoffset;
775 info->var.yoffset = var->yoffset;
776 set_screen_start(offset);
777 debug("exit\n");
778 return 0;
779 }
780
781 #define shadowmode_on() write3CE(CyberControl,read3CE(CyberControl) | 0x81)
782 #define shadowmode_off() write3CE(CyberControl,read3CE(CyberControl) & 0x7E)
783
784 /* Set the hardware to the requested video mode */
785 static int tridentfb_set_par(struct fb_info *info)
786 {
787 struct tridentfb_par * par = (struct tridentfb_par *)(info->par);
788 u32 htotal,hdispend,hsyncstart,hsyncend,hblankstart,hblankend,
789 vtotal,vdispend,vsyncstart,vsyncend,vblankstart,vblankend;
790 struct fb_var_screeninfo *var = &info->var;
791 int bpp = var->bits_per_pixel;
792 unsigned char tmp;
793 debug("enter\n");
794 htotal = (var->xres + var->left_margin + var->right_margin + var->hsync_len)/8 - 10;
795 hdispend = var->xres/8 - 1;
796 hsyncstart = (var->xres + var->right_margin)/8;
797 hsyncend = var->hsync_len/8;
798 hblankstart = hdispend + 1;
799 hblankend = htotal + 5;
800
801 vtotal = var->yres + var->upper_margin + var->lower_margin + var->vsync_len - 2;
802 vdispend = var->yres - 1;
803 vsyncstart = var->yres + var->lower_margin;
804 vsyncend = var->vsync_len;
805 vblankstart = var->yres;
806 vblankend = vtotal + 2;
807
808 enable_mmio();
809 crtc_unlock();
810 write3CE(CyberControl,8);
811
812 if (flatpanel && var->xres < nativex) {
813 /*
814 * on flat panels with native size larger
815 * than requested resolution decide whether
816 * we stretch or center
817 */
818 t_outb(0xEB,0x3C2);
819
820 shadowmode_on();
821
822 if (center)
823 screen_center();
824 else if (stretch)
825 screen_stretch();
826
827 } else {
828 t_outb(0x2B,0x3C2);
829 write3CE(CyberControl,8);
830 }
831
832 /* vertical timing values */
833 write3X4(CRTVTotal, vtotal & 0xFF);
834 write3X4(CRTVDispEnd, vdispend & 0xFF);
835 write3X4(CRTVSyncStart, vsyncstart & 0xFF);
836 write3X4(CRTVSyncEnd, (vsyncend & 0x0F));
837 write3X4(CRTVBlankStart, vblankstart & 0xFF);
838 write3X4(CRTVBlankEnd, 0/*p->vblankend & 0xFF*/);
839
840 /* horizontal timing values */
841 write3X4(CRTHTotal, htotal & 0xFF);
842 write3X4(CRTHDispEnd, hdispend & 0xFF);
843 write3X4(CRTHSyncStart, hsyncstart & 0xFF);
844 write3X4(CRTHSyncEnd, (hsyncend & 0x1F) | ((hblankend & 0x20)<<2));
845 write3X4(CRTHBlankStart, hblankstart & 0xFF);
846 write3X4(CRTHBlankEnd, 0/*(p->hblankend & 0x1F)*/);
847
848 /* higher bits of vertical timing values */
849 tmp = 0x10;
850 if (vtotal & 0x100) tmp |= 0x01;
851 if (vdispend & 0x100) tmp |= 0x02;
852 if (vsyncstart & 0x100) tmp |= 0x04;
853 if (vblankstart & 0x100) tmp |= 0x08;
854
855 if (vtotal & 0x200) tmp |= 0x20;
856 if (vdispend & 0x200) tmp |= 0x40;
857 if (vsyncstart & 0x200) tmp |= 0x80;
858 write3X4(CRTOverflow, tmp);
859
860 tmp = read3X4(CRTHiOrd) | 0x08; //line compare bit 10
861 if (vtotal & 0x400) tmp |= 0x80;
862 if (vblankstart & 0x400) tmp |= 0x40;
863 if (vsyncstart & 0x400) tmp |= 0x20;
864 if (vdispend & 0x400) tmp |= 0x10;
865 write3X4(CRTHiOrd, tmp);
866
867 tmp = 0;
868 if (htotal & 0x800) tmp |= 0x800 >> 11;
869 if (hblankstart & 0x800) tmp |= 0x800 >> 7;
870 write3X4(HorizOverflow, tmp);
871
872 tmp = 0x40;
873 if (vblankstart & 0x200) tmp |= 0x20;
874 //FIXME if (info->var.vmode & FB_VMODE_DOUBLE) tmp |= 0x80; //double scan for 200 line modes
875 write3X4(CRTMaxScanLine, tmp);
876
877 write3X4(CRTLineCompare,0xFF);
878 write3X4(CRTPRowScan,0);
879 write3X4(CRTModeControl,0xC3);
880
881 write3X4(LinearAddReg,0x20); //enable linear addressing
882
883 tmp = (info->var.vmode & FB_VMODE_INTERLACED) ? 0x84:0x80;
884 write3X4(CRTCModuleTest,tmp); //enable access extended memory
885
886 write3X4(GraphEngReg, 0x80); //enable GE for text acceleration
887
888 #ifdef CONFIG_FB_TRIDENT_ACCEL
889 acc->init_accel(info->var.xres,bpp);
890 #endif
891
892 switch (bpp) {
893 case 8: tmp = 0x00; break;
894 case 16: tmp = 0x05; break;
895 case 24: tmp = 0x29; break;
896 case 32: tmp = 0x09;
897 }
898
899 write3X4(PixelBusReg, tmp);
900
901 tmp = 0x10;
902 if (chipcyber)
903 tmp |= 0x20;
904 write3X4(DRAMControl, tmp); //both IO,linear enable
905
906 write3X4(InterfaceSel, read3X4(InterfaceSel) | 0x40);
907 write3X4(Performance,0x92);
908 write3X4(PCIReg,0x07); //MMIO & PCI read and write burst enable
909
910 /* convert from picoseconds to MHz */
911 par->vclk = 1000000/info->var.pixclock;
912 if (bpp == 32)
913 par->vclk *=2;
914 set_vclk(par->vclk);
915
916 write3C4(0,3);
917 write3C4(1,1); //set char clock 8 dots wide
918 write3C4(2,0x0F); //enable 4 maps because needed in chain4 mode
919 write3C4(3,0);
920 write3C4(4,0x0E); //memory mode enable bitmaps ??
921
922 write3CE(MiscExtFunc,(bpp==32)?0x1A:0x12); //divide clock by 2 if 32bpp
923 //chain4 mode display and CPU path
924 write3CE(0x5,0x40); //no CGA compat,allow 256 col
925 write3CE(0x6,0x05); //graphics mode
926 write3CE(0x7,0x0F); //planes?
927
928 if (chip_id == CYBERBLADEXPAi1) {
929 /* This fixes snow-effect in 32 bpp */
930 write3X4(CRTHSyncStart,0x84);
931 }
932
933 writeAttr(0x10,0x41); //graphics mode and support 256 color modes
934 writeAttr(0x12,0x0F); //planes
935 writeAttr(0x13,0); //horizontal pel panning
936
937 //colors
938 for(tmp = 0;tmp < 0x10;tmp++)
939 writeAttr(tmp,tmp);
940 readb(par->io_virt + CRT + 0x0A); //flip-flop to index
941 t_outb(0x20, 0x3C0); //enable attr
942
943 switch (bpp) {
944 case 8: tmp = 0;break; //256 colors
945 case 15: tmp = 0x10;break;
946 case 16: tmp = 0x30;break; //hicolor
947 case 24: //truecolor
948 case 32: tmp = 0xD0;break;
949 }
950
951 t_inb(0x3C8);
952 t_inb(0x3C6);
953 t_inb(0x3C6);
954 t_inb(0x3C6);
955 t_inb(0x3C6);
956 t_outb(tmp,0x3C6);
957 t_inb(0x3C8);
958
959 if (flatpanel)
960 set_number_of_lines(info->var.yres);
961 set_lwidth(info->var.xres * bpp/(4*16));
962 info->fix.visual = (bpp == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
963 info->fix.line_length = info->var.xres * (bpp >> 3);
964 info->cmap.len = (bpp == 8) ? 256: 16;
965 debug("exit\n");
966 return 0;
967 }
968
969 /* Set one color register */
970 static int tridentfb_setcolreg(unsigned regno, unsigned red, unsigned green,
971 unsigned blue, unsigned transp,
972 struct fb_info *info)
973 {
974 int bpp = info->var.bits_per_pixel;
975
976 if (regno >= info->cmap.len)
977 return 1;
978
979
980 if (bpp==8) {
981 t_outb(0xFF,0x3C6);
982 t_outb(regno,0x3C8);
983
984 t_outb(red>>10,0x3C9);
985 t_outb(green>>10,0x3C9);
986 t_outb(blue>>10,0x3C9);
987
988 } else if (bpp == 16) { /* RGB 565 */
989 u32 col;
990
991 col = (red & 0xF800) | ((green & 0xFC00) >> 5) |
992 ((blue & 0xF800) >> 11);
993 col |= col << 16;
994 ((u32 *)(info->pseudo_palette))[regno] = col;
995 } else if (bpp == 32) /* ARGB 8888 */
996 ((u32*)info->pseudo_palette)[regno] =
997 ((transp & 0xFF00) <<16) |
998 ((red & 0xFF00) << 8) |
999 ((green & 0xFF00)) |
1000 ((blue & 0xFF00)>>8);
1001
1002 // debug("exit\n");
1003 return 0;
1004 }
1005
1006 /* Try blanking the screen.For flat panels it does nothing */
1007 static int tridentfb_blank(int blank_mode, struct fb_info *info)
1008 {
1009 unsigned char PMCont,DPMSCont;
1010
1011 debug("enter\n");
1012 if (flatpanel)
1013 return 0;
1014 t_outb(0x04,0x83C8); /* Read DPMS Control */
1015 PMCont = t_inb(0x83C6) & 0xFC;
1016 DPMSCont = read3CE(PowerStatus) & 0xFC;
1017 switch (blank_mode)
1018 {
1019 case FB_BLANK_UNBLANK:
1020 /* Screen: On, HSync: On, VSync: On */
1021 case FB_BLANK_NORMAL:
1022 /* Screen: Off, HSync: On, VSync: On */
1023 PMCont |= 0x03;
1024 DPMSCont |= 0x00;
1025 break;
1026 case FB_BLANK_HSYNC_SUSPEND:
1027 /* Screen: Off, HSync: Off, VSync: On */
1028 PMCont |= 0x02;
1029 DPMSCont |= 0x01;
1030 break;
1031 case FB_BLANK_VSYNC_SUSPEND:
1032 /* Screen: Off, HSync: On, VSync: Off */
1033 PMCont |= 0x02;
1034 DPMSCont |= 0x02;
1035 break;
1036 case FB_BLANK_POWERDOWN:
1037 /* Screen: Off, HSync: Off, VSync: Off */
1038 PMCont |= 0x00;
1039 DPMSCont |= 0x03;
1040 break;
1041 }
1042
1043 write3CE(PowerStatus,DPMSCont);
1044 t_outb(4,0x83C8);
1045 t_outb(PMCont,0x83C6);
1046
1047 debug("exit\n");
1048
1049 /* let fbcon do a softblank for us */
1050 return (blank_mode == FB_BLANK_NORMAL) ? 1 : 0;
1051 }
1052
1053 static int __devinit trident_pci_probe(struct pci_dev * dev, const struct pci_device_id * id)
1054 {
1055 int err;
1056 unsigned char revision;
1057
1058 err = pci_enable_device(dev);
1059 if (err)
1060 return err;
1061
1062 chip_id = id->device;
1063
1064 if(chip_id == CYBERBLADEi1)
1065 output("*** Please do use cyblafb, Cyberblade/i1 support "
1066 "will soon be removed from tridentfb!\n");
1067
1068
1069 /* If PCI id is 0x9660 then further detect chip type */
1070
1071 if (chip_id == TGUI9660) {
1072 outb(RevisionID,0x3C4);
1073 revision = inb(0x3C5);
1074
1075 switch (revision) {
1076 case 0x22:
1077 case 0x23: chip_id = CYBER9397;break;
1078 case 0x2A: chip_id = CYBER9397DVD;break;
1079 case 0x30:
1080 case 0x33:
1081 case 0x34:
1082 case 0x35:
1083 case 0x38:
1084 case 0x3A:
1085 case 0xB3: chip_id = CYBER9385;break;
1086 case 0x40 ... 0x43: chip_id = CYBER9382;break;
1087 case 0x4A: chip_id = CYBER9388;break;
1088 default:break;
1089 }
1090 }
1091
1092 chip3D = is3Dchip(chip_id);
1093 chipcyber = iscyber(chip_id);
1094
1095 if (is_xp(chip_id)) {
1096 acc = &accel_xp;
1097 } else
1098 if (is_blade(chip_id)) {
1099 acc = &accel_blade;
1100 } else {
1101 acc = &accel_image;
1102 }
1103
1104 /* acceleration is on by default for 3D chips */
1105 defaultaccel = chip3D && !noaccel;
1106
1107 fb_info.par = &default_par;
1108
1109 /* setup MMIO region */
1110 tridentfb_fix.mmio_start = pci_resource_start(dev,1);
1111 tridentfb_fix.mmio_len = chip3D ? 0x20000:0x10000;
1112
1113 if (!request_mem_region(tridentfb_fix.mmio_start, tridentfb_fix.mmio_len, "tridentfb")) {
1114 debug("request_region failed!\n");
1115 return -1;
1116 }
1117
1118 default_par.io_virt = ioremap_nocache(tridentfb_fix.mmio_start, tridentfb_fix.mmio_len);
1119
1120 if (!default_par.io_virt) {
1121 release_region(tridentfb_fix.mmio_start, tridentfb_fix.mmio_len);
1122 debug("ioremap failed\n");
1123 return -1;
1124 }
1125
1126 enable_mmio();
1127
1128 /* setup framebuffer memory */
1129 tridentfb_fix.smem_start = pci_resource_start(dev,0);
1130 tridentfb_fix.smem_len = get_memsize();
1131
1132 if (!request_mem_region(tridentfb_fix.smem_start, tridentfb_fix.smem_len, "tridentfb")) {
1133 debug("request_mem_region failed!\n");
1134 return -1;
1135 }
1136
1137 fb_info.screen_base = ioremap_nocache(tridentfb_fix.smem_start,
1138 tridentfb_fix.smem_len);
1139
1140 if (!fb_info.screen_base) {
1141 release_mem_region(tridentfb_fix.smem_start, tridentfb_fix.smem_len);
1142 debug("ioremap failed\n");
1143 return -1;
1144 }
1145
1146 output("%s board found\n", pci_name(dev));
1147 #if 0
1148 output("Trident board found : mem = %X,io = %X, mem_v = %X, io_v = %X\n",
1149 tridentfb_fix.smem_start, tridentfb_fix.mmio_start, fb_info.screen_base, default_par.io_virt);
1150 #endif
1151 displaytype = get_displaytype();
1152
1153 if(flatpanel)
1154 nativex = get_nativex();
1155
1156 fb_info.fix = tridentfb_fix;
1157 fb_info.fbops = &tridentfb_ops;
1158
1159
1160 fb_info.flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1161 #ifdef CONFIG_FB_TRIDENT_ACCEL
1162 fb_info.flags |= FBINFO_HWACCEL_COPYAREA | FBINFO_HWACCEL_FILLRECT;
1163 #endif
1164 fb_info.pseudo_palette = pseudo_pal;
1165
1166 if (!fb_find_mode(&default_var,&fb_info,mode,NULL,0,NULL,bpp))
1167 return -EINVAL;
1168 fb_alloc_cmap(&fb_info.cmap,256,0);
1169 if (defaultaccel && acc)
1170 default_var.accel_flags |= FB_ACCELF_TEXT;
1171 else
1172 default_var.accel_flags &= ~FB_ACCELF_TEXT;
1173 default_var.activate |= FB_ACTIVATE_NOW;
1174 fb_info.var = default_var;
1175 fb_info.device = &dev->dev;
1176 if (register_framebuffer(&fb_info) < 0) {
1177 printk(KERN_ERR "tridentfb: could not register Trident framebuffer\n");
1178 return -EINVAL;
1179 }
1180 output("fb%d: %s frame buffer device %dx%d-%dbpp\n",
1181 fb_info.node, fb_info.fix.id,default_var.xres,
1182 default_var.yres,default_var.bits_per_pixel);
1183 return 0;
1184 }
1185
1186 static void __devexit trident_pci_remove(struct pci_dev * dev)
1187 {
1188 struct tridentfb_par *par = (struct tridentfb_par*)fb_info.par;
1189 unregister_framebuffer(&fb_info);
1190 iounmap(par->io_virt);
1191 iounmap(fb_info.screen_base);
1192 release_mem_region(tridentfb_fix.smem_start, tridentfb_fix.smem_len);
1193 release_region(tridentfb_fix.mmio_start, tridentfb_fix.mmio_len);
1194 }
1195
1196 /* List of boards that we are trying to support */
1197 static struct pci_device_id trident_devices[] = {
1198 {PCI_VENDOR_ID_TRIDENT, BLADE3D, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
1199 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEi7, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
1200 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEi7D, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
1201 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEi1, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
1202 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEi1D, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
1203 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEAi1, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
1204 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEAi1D, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
1205 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEE4, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
1206 {PCI_VENDOR_ID_TRIDENT, TGUI9660, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
1207 {PCI_VENDOR_ID_TRIDENT, IMAGE975, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
1208 {PCI_VENDOR_ID_TRIDENT, IMAGE985, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
1209 {PCI_VENDOR_ID_TRIDENT, CYBER9320, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
1210 {PCI_VENDOR_ID_TRIDENT, CYBER9388, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
1211 {PCI_VENDOR_ID_TRIDENT, CYBER9520, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
1212 {PCI_VENDOR_ID_TRIDENT, CYBER9525DVD, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
1213 {PCI_VENDOR_ID_TRIDENT, CYBER9397, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
1214 {PCI_VENDOR_ID_TRIDENT, CYBER9397DVD, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
1215 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEXPAi1, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
1216 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEXPm8, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
1217 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEXPm16, PCI_ANY_ID,PCI_ANY_ID,0,0,0},
1218 {0,}
1219 };
1220
1221 MODULE_DEVICE_TABLE(pci,trident_devices);
1222
1223 static struct pci_driver tridentfb_pci_driver = {
1224 .name = "tridentfb",
1225 .id_table = trident_devices,
1226 .probe = trident_pci_probe,
1227 .remove = __devexit_p(trident_pci_remove)
1228 };
1229
1230 /*
1231 * Parse user specified options (`video=trident:')
1232 * example:
1233 * video=trident:800x600,bpp=16,noaccel
1234 */
1235 #ifndef MODULE
1236 static int tridentfb_setup(char *options)
1237 {
1238 char * opt;
1239 if (!options || !*options)
1240 return 0;
1241 while((opt = strsep(&options,",")) != NULL ) {
1242 if (!*opt) continue;
1243 if (!strncmp(opt,"noaccel",7))
1244 noaccel = 1;
1245 else if (!strncmp(opt,"fp",2))
1246 displaytype = DISPLAY_FP;
1247 else if (!strncmp(opt,"crt",3))
1248 displaytype = DISPLAY_CRT;
1249 else if (!strncmp(opt,"bpp=",4))
1250 bpp = simple_strtoul(opt+4,NULL,0);
1251 else if (!strncmp(opt,"center",6))
1252 center = 1;
1253 else if (!strncmp(opt,"stretch",7))
1254 stretch = 1;
1255 else if (!strncmp(opt,"memsize=",8))
1256 memsize = simple_strtoul(opt+8,NULL,0);
1257 else if (!strncmp(opt,"memdiff=",8))
1258 memdiff = simple_strtoul(opt+8,NULL,0);
1259 else if (!strncmp(opt,"nativex=",8))
1260 nativex = simple_strtoul(opt+8,NULL,0);
1261 else
1262 mode = opt;
1263 }
1264 return 0;
1265 }
1266 #endif
1267
1268 static int __init tridentfb_init(void)
1269 {
1270 #ifndef MODULE
1271 char *option = NULL;
1272
1273 if (fb_get_options("tridentfb", &option))
1274 return -ENODEV;
1275 tridentfb_setup(option);
1276 #endif
1277 output("Trident framebuffer %s initializing\n", VERSION);
1278 return pci_register_driver(&tridentfb_pci_driver);
1279 }
1280
1281 static void __exit tridentfb_exit(void)
1282 {
1283 pci_unregister_driver(&tridentfb_pci_driver);
1284 }
1285
1286 static struct fb_ops tridentfb_ops = {
1287 .owner = THIS_MODULE,
1288 .fb_setcolreg = tridentfb_setcolreg,
1289 .fb_pan_display = tridentfb_pan_display,
1290 .fb_blank = tridentfb_blank,
1291 .fb_check_var = tridentfb_check_var,
1292 .fb_set_par = tridentfb_set_par,
1293 .fb_fillrect = tridentfb_fillrect,
1294 .fb_copyarea= tridentfb_copyarea,
1295 .fb_imageblit = cfb_imageblit,
1296 };
1297
1298 module_init(tridentfb_init);
1299 module_exit(tridentfb_exit);
1300
1301 MODULE_AUTHOR("Jani Monoses <jani@iv.ro>");
1302 MODULE_DESCRIPTION("Framebuffer driver for Trident cards");
1303 MODULE_LICENSE("GPL");
1304
Support for the Chinese Samsung S3C2440 based development boards