1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Frame buffer driver for Trident TGUI, Blade and Image series
4 *
5 * Copyright 2001, 2002 - Jani Monoses <jani@iv.ro>
6 * Copyright 2009 Krzysztof Helt <krzysztof.h1@wp.pl>
7 *
8 * CREDITS:(in order of appearance)
9 * skeletonfb.c by Geert Uytterhoeven and other fb code in drivers/video
10 * Special thanks ;) to Mattia Crivellini <tia@mclink.it>
11 * much inspired by the XFree86 4.x Trident driver sources
12 * by Alan Hourihane the FreeVGA project
13 * Francesco Salvestrini <salvestrini@users.sf.net> XP support,
14 * code, suggestions
15 * TODO:
16 * timing value tweaking so it looks good on every monitor in every mode
17 */
18
19 #include <linux/aperture.h>
20 #include <linux/module.h>
21 #include <linux/fb.h>
22 #include <linux/init.h>
23 #include <linux/pci.h>
24 #include <linux/slab.h>
25
26 #include <linux/delay.h>
27 #include <video/vga.h>
28 #include <video/trident.h>
29
30 #include <linux/i2c.h>
31 #include <linux/i2c-algo-bit.h>
32
33 struct tridentfb_par {
34 void __iomem *io_virt; /* iospace virtual memory address */
35 u32 pseudo_pal[16];
36 int chip_id;
37 int flatpanel;
38 void (*init_accel) (struct tridentfb_par *, int, int);
39 void (*wait_engine) (struct tridentfb_par *);
40 void (*fill_rect)
41 (struct tridentfb_par *par, u32, u32, u32, u32, u32, u32);
42 void (*copy_rect)
43 (struct tridentfb_par *par, u32, u32, u32, u32, u32, u32);
44 void (*image_blit)
45 (struct tridentfb_par *par, const char*,
46 u32, u32, u32, u32, u32, u32);
47 unsigned char eng_oper; /* engine operation... */
48 bool ddc_registered;
49 struct i2c_adapter ddc_adapter;
50 struct i2c_algo_bit_data ddc_algo;
51 };
52
53 static struct fb_fix_screeninfo tridentfb_fix = {
54 .id = "Trident",
55 .type = FB_TYPE_PACKED_PIXELS,
56 .ypanstep = 1,
57 .visual = FB_VISUAL_PSEUDOCOLOR,
58 .accel = FB_ACCEL_NONE,
59 };
60
61 /* defaults which are normally overriden by user values */
62
63 /* video mode */
64 static char *mode_option;
65 static int bpp = 8;
66
67 static int noaccel;
68
69 static int center;
70 static int stretch;
71
72 static int fp;
73 static int crt;
74
75 static int memsize;
76 static int memdiff;
77 static int nativex;
78
79 module_param(mode_option, charp, 0);
80 MODULE_PARM_DESC(mode_option, "Initial video mode e.g. '648x480-8@60'");
81 module_param_named(mode, mode_option, charp, 0);
82 MODULE_PARM_DESC(mode, "Initial video mode e.g. '648x480-8@60' (deprecated)");
83 module_param(bpp, int, 0);
84 module_param(center, int, 0);
85 module_param(stretch, int, 0);
86 module_param(noaccel, int, 0);
87 module_param(memsize, int, 0);
88 module_param(memdiff, int, 0);
89 module_param(nativex, int, 0);
90 module_param(fp, int, 0);
91 MODULE_PARM_DESC(fp, "Define if flatpanel is connected");
92 module_param(crt, int, 0);
93 MODULE_PARM_DESC(crt, "Define if CRT is connected");
94
is_oldclock(int id)95 static inline int is_oldclock(int id)
96 {
97 return (id == TGUI9440) ||
98 (id == TGUI9660) ||
99 (id == CYBER9320);
100 }
101
is_oldprotect(int id)102 static inline int is_oldprotect(int id)
103 {
104 return is_oldclock(id) ||
105 (id == PROVIDIA9685) ||
106 (id == CYBER9382) ||
107 (id == CYBER9385);
108 }
109
is_blade(int id)110 static inline int is_blade(int id)
111 {
112 return (id == BLADE3D) ||
113 (id == CYBERBLADEE4) ||
114 (id == CYBERBLADEi7) ||
115 (id == CYBERBLADEi7D) ||
116 (id == CYBERBLADEi1) ||
117 (id == CYBERBLADEi1D) ||
118 (id == CYBERBLADEAi1) ||
119 (id == CYBERBLADEAi1D);
120 }
121
is_xp(int id)122 static inline int is_xp(int id)
123 {
124 return (id == CYBERBLADEXPAi1) ||
125 (id == CYBERBLADEXPm8) ||
126 (id == CYBERBLADEXPm16);
127 }
128
is3Dchip(int id)129 static inline int is3Dchip(int id)
130 {
131 return is_blade(id) || is_xp(id) ||
132 (id == CYBER9397) || (id == CYBER9397DVD) ||
133 (id == CYBER9520) || (id == CYBER9525DVD) ||
134 (id == IMAGE975) || (id == IMAGE985);
135 }
136
iscyber(int id)137 static inline int iscyber(int id)
138 {
139 switch (id) {
140 case CYBER9388:
141 case CYBER9382:
142 case CYBER9385:
143 case CYBER9397:
144 case CYBER9397DVD:
145 case CYBER9520:
146 case CYBER9525DVD:
147 case CYBERBLADEE4:
148 case CYBERBLADEi7D:
149 case CYBERBLADEi1:
150 case CYBERBLADEi1D:
151 case CYBERBLADEAi1:
152 case CYBERBLADEAi1D:
153 case CYBERBLADEXPAi1:
154 return 1;
155
156 case CYBER9320:
157 case CYBERBLADEi7: /* VIA MPV4 integrated version */
158 default:
159 /* case CYBERBLDAEXPm8: Strange */
160 /* case CYBERBLDAEXPm16: Strange */
161 return 0;
162 }
163 }
164
t_outb(struct tridentfb_par * p,u8 val,u16 reg)165 static inline void t_outb(struct tridentfb_par *p, u8 val, u16 reg)
166 {
167 fb_writeb(val, p->io_virt + reg);
168 }
169
t_inb(struct tridentfb_par * p,u16 reg)170 static inline u8 t_inb(struct tridentfb_par *p, u16 reg)
171 {
172 return fb_readb(p->io_virt + reg);
173 }
174
writemmr(struct tridentfb_par * par,u16 r,u32 v)175 static inline void writemmr(struct tridentfb_par *par, u16 r, u32 v)
176 {
177 fb_writel(v, par->io_virt + r);
178 }
179
readmmr(struct tridentfb_par * par,u16 r)180 static inline u32 readmmr(struct tridentfb_par *par, u16 r)
181 {
182 return fb_readl(par->io_virt + r);
183 }
184
185 #define DDC_SDA_TGUI BIT(0)
186 #define DDC_SCL_TGUI BIT(1)
187 #define DDC_SCL_DRIVE_TGUI BIT(2)
188 #define DDC_SDA_DRIVE_TGUI BIT(3)
189 #define DDC_MASK_TGUI (DDC_SCL_DRIVE_TGUI | DDC_SDA_DRIVE_TGUI)
190
tridentfb_ddc_setscl_tgui(void * data,int val)191 static void tridentfb_ddc_setscl_tgui(void *data, int val)
192 {
193 struct tridentfb_par *par = data;
194 u8 reg = vga_mm_rcrt(par->io_virt, I2C) & DDC_MASK_TGUI;
195
196 if (val)
197 reg &= ~DDC_SCL_DRIVE_TGUI; /* disable drive - don't drive hi */
198 else
199 reg |= DDC_SCL_DRIVE_TGUI; /* drive low */
200
201 vga_mm_wcrt(par->io_virt, I2C, reg);
202 }
203
tridentfb_ddc_setsda_tgui(void * data,int val)204 static void tridentfb_ddc_setsda_tgui(void *data, int val)
205 {
206 struct tridentfb_par *par = data;
207 u8 reg = vga_mm_rcrt(par->io_virt, I2C) & DDC_MASK_TGUI;
208
209 if (val)
210 reg &= ~DDC_SDA_DRIVE_TGUI; /* disable drive - don't drive hi */
211 else
212 reg |= DDC_SDA_DRIVE_TGUI; /* drive low */
213
214 vga_mm_wcrt(par->io_virt, I2C, reg);
215 }
216
tridentfb_ddc_getsda_tgui(void * data)217 static int tridentfb_ddc_getsda_tgui(void *data)
218 {
219 struct tridentfb_par *par = data;
220
221 return !!(vga_mm_rcrt(par->io_virt, I2C) & DDC_SDA_TGUI);
222 }
223
224 #define DDC_SDA_IN BIT(0)
225 #define DDC_SCL_OUT BIT(1)
226 #define DDC_SDA_OUT BIT(3)
227 #define DDC_SCL_IN BIT(6)
228 #define DDC_MASK (DDC_SCL_OUT | DDC_SDA_OUT)
229
tridentfb_ddc_setscl(void * data,int val)230 static void tridentfb_ddc_setscl(void *data, int val)
231 {
232 struct tridentfb_par *par = data;
233 unsigned char reg;
234
235 reg = vga_mm_rcrt(par->io_virt, I2C) & DDC_MASK;
236 if (val)
237 reg |= DDC_SCL_OUT;
238 else
239 reg &= ~DDC_SCL_OUT;
240 vga_mm_wcrt(par->io_virt, I2C, reg);
241 }
242
tridentfb_ddc_setsda(void * data,int val)243 static void tridentfb_ddc_setsda(void *data, int val)
244 {
245 struct tridentfb_par *par = data;
246 unsigned char reg;
247
248 reg = vga_mm_rcrt(par->io_virt, I2C) & DDC_MASK;
249 if (!val)
250 reg |= DDC_SDA_OUT;
251 else
252 reg &= ~DDC_SDA_OUT;
253 vga_mm_wcrt(par->io_virt, I2C, reg);
254 }
255
tridentfb_ddc_getscl(void * data)256 static int tridentfb_ddc_getscl(void *data)
257 {
258 struct tridentfb_par *par = data;
259
260 return !!(vga_mm_rcrt(par->io_virt, I2C) & DDC_SCL_IN);
261 }
262
tridentfb_ddc_getsda(void * data)263 static int tridentfb_ddc_getsda(void *data)
264 {
265 struct tridentfb_par *par = data;
266
267 return !!(vga_mm_rcrt(par->io_virt, I2C) & DDC_SDA_IN);
268 }
269
tridentfb_setup_ddc_bus(struct fb_info * info)270 static int tridentfb_setup_ddc_bus(struct fb_info *info)
271 {
272 struct tridentfb_par *par = info->par;
273
274 strscpy(par->ddc_adapter.name, info->fix.id,
275 sizeof(par->ddc_adapter.name));
276 par->ddc_adapter.owner = THIS_MODULE;
277 par->ddc_adapter.class = I2C_CLASS_DDC;
278 par->ddc_adapter.algo_data = &par->ddc_algo;
279 par->ddc_adapter.dev.parent = info->device;
280 if (is_oldclock(par->chip_id)) { /* not sure if this check is OK */
281 par->ddc_algo.setsda = tridentfb_ddc_setsda_tgui;
282 par->ddc_algo.setscl = tridentfb_ddc_setscl_tgui;
283 par->ddc_algo.getsda = tridentfb_ddc_getsda_tgui;
284 /* no getscl */
285 } else {
286 par->ddc_algo.setsda = tridentfb_ddc_setsda;
287 par->ddc_algo.setscl = tridentfb_ddc_setscl;
288 par->ddc_algo.getsda = tridentfb_ddc_getsda;
289 par->ddc_algo.getscl = tridentfb_ddc_getscl;
290 }
291 par->ddc_algo.udelay = 10;
292 par->ddc_algo.timeout = 20;
293 par->ddc_algo.data = par;
294
295 i2c_set_adapdata(&par->ddc_adapter, par);
296
297 return i2c_bit_add_bus(&par->ddc_adapter);
298 }
299
300 /*
301 * Blade specific acceleration.
302 */
303
304 #define point(x, y) ((y) << 16 | (x))
305
blade_init_accel(struct tridentfb_par * par,int pitch,int bpp)306 static void blade_init_accel(struct tridentfb_par *par, int pitch, int bpp)
307 {
308 int v1 = (pitch >> 3) << 20;
309 int tmp = bpp == 24 ? 2 : (bpp >> 4);
310 int v2 = v1 | (tmp << 29);
311
312 writemmr(par, 0x21C0, v2);
313 writemmr(par, 0x21C4, v2);
314 writemmr(par, 0x21B8, v2);
315 writemmr(par, 0x21BC, v2);
316 writemmr(par, 0x21D0, v1);
317 writemmr(par, 0x21D4, v1);
318 writemmr(par, 0x21C8, v1);
319 writemmr(par, 0x21CC, v1);
320 writemmr(par, 0x216C, 0);
321 }
322
blade_wait_engine(struct tridentfb_par * par)323 static void blade_wait_engine(struct tridentfb_par *par)
324 {
325 while (readmmr(par, STATUS) & 0xFA800000)
326 cpu_relax();
327 }
328
blade_fill_rect(struct tridentfb_par * par,u32 x,u32 y,u32 w,u32 h,u32 c,u32 rop)329 static void blade_fill_rect(struct tridentfb_par *par,
330 u32 x, u32 y, u32 w, u32 h, u32 c, u32 rop)
331 {
332 writemmr(par, COLOR, c);
333 writemmr(par, ROP, rop ? ROP_X : ROP_S);
334 writemmr(par, CMD, 0x20000000 | 1 << 19 | 1 << 4 | 2 << 2);
335
336 writemmr(par, DST1, point(x, y));
337 writemmr(par, DST2, point(x + w - 1, y + h - 1));
338 }
339
blade_image_blit(struct tridentfb_par * par,const char * data,u32 x,u32 y,u32 w,u32 h,u32 c,u32 b)340 static void blade_image_blit(struct tridentfb_par *par, const char *data,
341 u32 x, u32 y, u32 w, u32 h, u32 c, u32 b)
342 {
343 unsigned size = ((w + 31) >> 5) * h;
344
345 writemmr(par, COLOR, c);
346 writemmr(par, BGCOLOR, b);
347 writemmr(par, CMD, 0xa0000000 | 3 << 19);
348
349 writemmr(par, DST1, point(x, y));
350 writemmr(par, DST2, point(x + w - 1, y + h - 1));
351
352 iowrite32_rep(par->io_virt + 0x10000, data, size);
353 }
354
blade_copy_rect(struct tridentfb_par * par,u32 x1,u32 y1,u32 x2,u32 y2,u32 w,u32 h)355 static void blade_copy_rect(struct tridentfb_par *par,
356 u32 x1, u32 y1, u32 x2, u32 y2, u32 w, u32 h)
357 {
358 int direction = 2;
359 u32 s1 = point(x1, y1);
360 u32 s2 = point(x1 + w - 1, y1 + h - 1);
361 u32 d1 = point(x2, y2);
362 u32 d2 = point(x2 + w - 1, y2 + h - 1);
363
364 if ((y1 > y2) || ((y1 == y2) && (x1 > x2)))
365 direction = 0;
366
367 writemmr(par, ROP, ROP_S);
368 writemmr(par, CMD, 0xE0000000 | 1 << 19 | 1 << 4 | 1 << 2 | direction);
369
370 writemmr(par, SRC1, direction ? s2 : s1);
371 writemmr(par, SRC2, direction ? s1 : s2);
372 writemmr(par, DST1, direction ? d2 : d1);
373 writemmr(par, DST2, direction ? d1 : d2);
374 }
375
376 /*
377 * BladeXP specific acceleration functions
378 */
379
xp_init_accel(struct tridentfb_par * par,int pitch,int bpp)380 static void xp_init_accel(struct tridentfb_par *par, int pitch, int bpp)
381 {
382 unsigned char x = bpp == 24 ? 3 : (bpp >> 4);
383 int v1 = pitch << (bpp == 24 ? 20 : (18 + x));
384
385 switch (pitch << (bpp >> 3)) {
386 case 8192:
387 case 512:
388 x |= 0x00;
389 break;
390 case 1024:
391 x |= 0x04;
392 break;
393 case 2048:
394 x |= 0x08;
395 break;
396 case 4096:
397 x |= 0x0C;
398 break;
399 }
400
401 t_outb(par, x, 0x2125);
402
403 par->eng_oper = x | 0x40;
404
405 writemmr(par, 0x2154, v1);
406 writemmr(par, 0x2150, v1);
407 t_outb(par, 3, 0x2126);
408 }
409
xp_wait_engine(struct tridentfb_par * par)410 static void xp_wait_engine(struct tridentfb_par *par)
411 {
412 int count = 0;
413 int timeout = 0;
414
415 while (t_inb(par, STATUS) & 0x80) {
416 count++;
417 if (count == 10000000) {
418 /* Timeout */
419 count = 9990000;
420 timeout++;
421 if (timeout == 8) {
422 /* Reset engine */
423 t_outb(par, 0x00, STATUS);
424 return;
425 }
426 }
427 cpu_relax();
428 }
429 }
430
xp_fill_rect(struct tridentfb_par * par,u32 x,u32 y,u32 w,u32 h,u32 c,u32 rop)431 static void xp_fill_rect(struct tridentfb_par *par,
432 u32 x, u32 y, u32 w, u32 h, u32 c, u32 rop)
433 {
434 writemmr(par, 0x2127, ROP_P);
435 writemmr(par, 0x2158, c);
436 writemmr(par, DRAWFL, 0x4000);
437 writemmr(par, OLDDIM, point(h, w));
438 writemmr(par, OLDDST, point(y, x));
439 t_outb(par, 0x01, OLDCMD);
440 t_outb(par, par->eng_oper, 0x2125);
441 }
442
xp_copy_rect(struct tridentfb_par * par,u32 x1,u32 y1,u32 x2,u32 y2,u32 w,u32 h)443 static void xp_copy_rect(struct tridentfb_par *par,
444 u32 x1, u32 y1, u32 x2, u32 y2, u32 w, u32 h)
445 {
446 u32 x1_tmp, x2_tmp, y1_tmp, y2_tmp;
447 int direction = 0x0004;
448
449 if ((x1 < x2) && (y1 == y2)) {
450 direction |= 0x0200;
451 x1_tmp = x1 + w - 1;
452 x2_tmp = x2 + w - 1;
453 } else {
454 x1_tmp = x1;
455 x2_tmp = x2;
456 }
457
458 if (y1 < y2) {
459 direction |= 0x0100;
460 y1_tmp = y1 + h - 1;
461 y2_tmp = y2 + h - 1;
462 } else {
463 y1_tmp = y1;
464 y2_tmp = y2;
465 }
466
467 writemmr(par, DRAWFL, direction);
468 t_outb(par, ROP_S, 0x2127);
469 writemmr(par, OLDSRC, point(y1_tmp, x1_tmp));
470 writemmr(par, OLDDST, point(y2_tmp, x2_tmp));
471 writemmr(par, OLDDIM, point(h, w));
472 t_outb(par, 0x01, OLDCMD);
473 }
474
475 /*
476 * Image specific acceleration functions
477 */
image_init_accel(struct tridentfb_par * par,int pitch,int bpp)478 static void image_init_accel(struct tridentfb_par *par, int pitch, int bpp)
479 {
480 int tmp = bpp == 24 ? 2: (bpp >> 4);
481
482 writemmr(par, 0x2120, 0xF0000000);
483 writemmr(par, 0x2120, 0x40000000 | tmp);
484 writemmr(par, 0x2120, 0x80000000);
485 writemmr(par, 0x2144, 0x00000000);
486 writemmr(par, 0x2148, 0x00000000);
487 writemmr(par, 0x2150, 0x00000000);
488 writemmr(par, 0x2154, 0x00000000);
489 writemmr(par, 0x2120, 0x60000000 | (pitch << 16) | pitch);
490 writemmr(par, 0x216C, 0x00000000);
491 writemmr(par, 0x2170, 0x00000000);
492 writemmr(par, 0x217C, 0x00000000);
493 writemmr(par, 0x2120, 0x10000000);
494 writemmr(par, 0x2130, (2047 << 16) | 2047);
495 }
496
image_wait_engine(struct tridentfb_par * par)497 static void image_wait_engine(struct tridentfb_par *par)
498 {
499 while (readmmr(par, 0x2164) & 0xF0000000)
500 cpu_relax();
501 }
502
image_fill_rect(struct tridentfb_par * par,u32 x,u32 y,u32 w,u32 h,u32 c,u32 rop)503 static void image_fill_rect(struct tridentfb_par *par,
504 u32 x, u32 y, u32 w, u32 h, u32 c, u32 rop)
505 {
506 writemmr(par, 0x2120, 0x80000000);
507 writemmr(par, 0x2120, 0x90000000 | ROP_S);
508
509 writemmr(par, 0x2144, c);
510
511 writemmr(par, DST1, point(x, y));
512 writemmr(par, DST2, point(x + w - 1, y + h - 1));
513
514 writemmr(par, 0x2124, 0x80000000 | 3 << 22 | 1 << 10 | 1 << 9);
515 }
516
image_copy_rect(struct tridentfb_par * par,u32 x1,u32 y1,u32 x2,u32 y2,u32 w,u32 h)517 static void image_copy_rect(struct tridentfb_par *par,
518 u32 x1, u32 y1, u32 x2, u32 y2, u32 w, u32 h)
519 {
520 int direction = 0x4;
521 u32 s1 = point(x1, y1);
522 u32 s2 = point(x1 + w - 1, y1 + h - 1);
523 u32 d1 = point(x2, y2);
524 u32 d2 = point(x2 + w - 1, y2 + h - 1);
525
526 if ((y1 > y2) || ((y1 == y2) && (x1 > x2)))
527 direction = 0;
528
529 writemmr(par, 0x2120, 0x80000000);
530 writemmr(par, 0x2120, 0x90000000 | ROP_S);
531
532 writemmr(par, SRC1, direction ? s2 : s1);
533 writemmr(par, SRC2, direction ? s1 : s2);
534 writemmr(par, DST1, direction ? d2 : d1);
535 writemmr(par, DST2, direction ? d1 : d2);
536 writemmr(par, 0x2124,
537 0x80000000 | 1 << 22 | 1 << 10 | 1 << 7 | direction);
538 }
539
540 /*
541 * TGUI 9440/96XX acceleration
542 */
543
tgui_init_accel(struct tridentfb_par * par,int pitch,int bpp)544 static void tgui_init_accel(struct tridentfb_par *par, int pitch, int bpp)
545 {
546 unsigned char x = bpp == 24 ? 3 : (bpp >> 4);
547
548 /* disable clipping */
549 writemmr(par, 0x2148, 0);
550 writemmr(par, 0x214C, point(4095, 2047));
551
552 switch ((pitch * bpp) / 8) {
553 case 8192:
554 case 512:
555 x |= 0x00;
556 break;
557 case 1024:
558 x |= 0x04;
559 break;
560 case 2048:
561 x |= 0x08;
562 break;
563 case 4096:
564 x |= 0x0C;
565 break;
566 }
567
568 fb_writew(x, par->io_virt + 0x2122);
569 }
570
tgui_fill_rect(struct tridentfb_par * par,u32 x,u32 y,u32 w,u32 h,u32 c,u32 rop)571 static void tgui_fill_rect(struct tridentfb_par *par,
572 u32 x, u32 y, u32 w, u32 h, u32 c, u32 rop)
573 {
574 t_outb(par, ROP_P, 0x2127);
575 writemmr(par, OLDCLR, c);
576 writemmr(par, DRAWFL, 0x4020);
577 writemmr(par, OLDDIM, point(w - 1, h - 1));
578 writemmr(par, OLDDST, point(x, y));
579 t_outb(par, 1, OLDCMD);
580 }
581
tgui_copy_rect(struct tridentfb_par * par,u32 x1,u32 y1,u32 x2,u32 y2,u32 w,u32 h)582 static void tgui_copy_rect(struct tridentfb_par *par,
583 u32 x1, u32 y1, u32 x2, u32 y2, u32 w, u32 h)
584 {
585 int flags = 0;
586 u16 x1_tmp, x2_tmp, y1_tmp, y2_tmp;
587
588 if ((x1 < x2) && (y1 == y2)) {
589 flags |= 0x0200;
590 x1_tmp = x1 + w - 1;
591 x2_tmp = x2 + w - 1;
592 } else {
593 x1_tmp = x1;
594 x2_tmp = x2;
595 }
596
597 if (y1 < y2) {
598 flags |= 0x0100;
599 y1_tmp = y1 + h - 1;
600 y2_tmp = y2 + h - 1;
601 } else {
602 y1_tmp = y1;
603 y2_tmp = y2;
604 }
605
606 writemmr(par, DRAWFL, 0x4 | flags);
607 t_outb(par, ROP_S, 0x2127);
608 writemmr(par, OLDSRC, point(x1_tmp, y1_tmp));
609 writemmr(par, OLDDST, point(x2_tmp, y2_tmp));
610 writemmr(par, OLDDIM, point(w - 1, h - 1));
611 t_outb(par, 1, OLDCMD);
612 }
613
614 /*
615 * Accel functions called by the upper layers
616 */
tridentfb_fillrect(struct fb_info * info,const struct fb_fillrect * fr)617 static void tridentfb_fillrect(struct fb_info *info,
618 const struct fb_fillrect *fr)
619 {
620 struct tridentfb_par *par = info->par;
621 int col;
622
623 if (info->flags & FBINFO_HWACCEL_DISABLED) {
624 cfb_fillrect(info, fr);
625 return;
626 }
627 if (info->var.bits_per_pixel == 8) {
628 col = fr->color;
629 col |= col << 8;
630 col |= col << 16;
631 } else
632 col = ((u32 *)(info->pseudo_palette))[fr->color];
633
634 par->wait_engine(par);
635 par->fill_rect(par, fr->dx, fr->dy, fr->width,
636 fr->height, col, fr->rop);
637 }
638
tridentfb_imageblit(struct fb_info * info,const struct fb_image * img)639 static void tridentfb_imageblit(struct fb_info *info,
640 const struct fb_image *img)
641 {
642 struct tridentfb_par *par = info->par;
643 int col, bgcol;
644
645 if ((info->flags & FBINFO_HWACCEL_DISABLED) || img->depth != 1) {
646 cfb_imageblit(info, img);
647 return;
648 }
649 if (info->var.bits_per_pixel == 8) {
650 col = img->fg_color;
651 col |= col << 8;
652 col |= col << 16;
653 bgcol = img->bg_color;
654 bgcol |= bgcol << 8;
655 bgcol |= bgcol << 16;
656 } else {
657 col = ((u32 *)(info->pseudo_palette))[img->fg_color];
658 bgcol = ((u32 *)(info->pseudo_palette))[img->bg_color];
659 }
660
661 par->wait_engine(par);
662 if (par->image_blit)
663 par->image_blit(par, img->data, img->dx, img->dy,
664 img->width, img->height, col, bgcol);
665 else
666 cfb_imageblit(info, img);
667 }
668
tridentfb_copyarea(struct fb_info * info,const struct fb_copyarea * ca)669 static void tridentfb_copyarea(struct fb_info *info,
670 const struct fb_copyarea *ca)
671 {
672 struct tridentfb_par *par = info->par;
673
674 if (info->flags & FBINFO_HWACCEL_DISABLED) {
675 cfb_copyarea(info, ca);
676 return;
677 }
678 par->wait_engine(par);
679 par->copy_rect(par, ca->sx, ca->sy, ca->dx, ca->dy,
680 ca->width, ca->height);
681 }
682
tridentfb_sync(struct fb_info * info)683 static int tridentfb_sync(struct fb_info *info)
684 {
685 struct tridentfb_par *par = info->par;
686
687 if (!(info->flags & FBINFO_HWACCEL_DISABLED))
688 par->wait_engine(par);
689 return 0;
690 }
691
692 /*
693 * Hardware access functions
694 */
695
read3X4(struct tridentfb_par * par,int reg)696 static inline unsigned char read3X4(struct tridentfb_par *par, int reg)
697 {
698 return vga_mm_rcrt(par->io_virt, reg);
699 }
700
write3X4(struct tridentfb_par * par,int reg,unsigned char val)701 static inline void write3X4(struct tridentfb_par *par, int reg,
702 unsigned char val)
703 {
704 vga_mm_wcrt(par->io_virt, reg, val);
705 }
706
read3CE(struct tridentfb_par * par,unsigned char reg)707 static inline unsigned char read3CE(struct tridentfb_par *par,
708 unsigned char reg)
709 {
710 return vga_mm_rgfx(par->io_virt, reg);
711 }
712
writeAttr(struct tridentfb_par * par,int reg,unsigned char val)713 static inline void writeAttr(struct tridentfb_par *par, int reg,
714 unsigned char val)
715 {
716 fb_readb(par->io_virt + VGA_IS1_RC); /* flip-flop to index */
717 vga_mm_wattr(par->io_virt, reg, val);
718 }
719
write3CE(struct tridentfb_par * par,int reg,unsigned char val)720 static inline void write3CE(struct tridentfb_par *par, int reg,
721 unsigned char val)
722 {
723 vga_mm_wgfx(par->io_virt, reg, val);
724 }
725
enable_mmio(struct tridentfb_par * par)726 static void enable_mmio(struct tridentfb_par *par)
727 {
728 /* Goto New Mode */
729 vga_io_rseq(0x0B);
730
731 /* Unprotect registers */
732 vga_io_wseq(NewMode1, 0x80);
733 if (!is_oldprotect(par->chip_id))
734 vga_io_wseq(Protection, 0x92);
735
736 /* Enable MMIO */
737 outb(PCIReg, 0x3D4);
738 outb(inb(0x3D5) | 0x01, 0x3D5);
739 }
740
disable_mmio(struct tridentfb_par * par)741 static void disable_mmio(struct tridentfb_par *par)
742 {
743 /* Goto New Mode */
744 vga_mm_rseq(par->io_virt, 0x0B);
745
746 /* Unprotect registers */
747 vga_mm_wseq(par->io_virt, NewMode1, 0x80);
748 if (!is_oldprotect(par->chip_id))
749 vga_mm_wseq(par->io_virt, Protection, 0x92);
750
751 /* Disable MMIO */
752 t_outb(par, PCIReg, 0x3D4);
753 t_outb(par, t_inb(par, 0x3D5) & ~0x01, 0x3D5);
754 }
755
crtc_unlock(struct tridentfb_par * par)756 static inline void crtc_unlock(struct tridentfb_par *par)
757 {
758 write3X4(par, VGA_CRTC_V_SYNC_END,
759 read3X4(par, VGA_CRTC_V_SYNC_END) & 0x7F);
760 }
761
762 /* Return flat panel's maximum x resolution */
get_nativex(struct tridentfb_par * par)763 static int get_nativex(struct tridentfb_par *par)
764 {
765 int x, y, tmp;
766
767 if (nativex)
768 return nativex;
769
770 tmp = (read3CE(par, VertStretch) >> 4) & 3;
771
772 switch (tmp) {
773 case 0:
774 x = 1280; y = 1024;
775 break;
776 case 2:
777 x = 1024; y = 768;
778 break;
779 case 3:
780 x = 800; y = 600;
781 break;
782 case 1:
783 default:
784 x = 640; y = 480;
785 break;
786 }
787
788 output("%dx%d flat panel found\n", x, y);
789 return x;
790 }
791
792 /* Set pitch */
set_lwidth(struct tridentfb_par * par,int width)793 static inline void set_lwidth(struct tridentfb_par *par, int width)
794 {
795 write3X4(par, VGA_CRTC_OFFSET, width & 0xFF);
796 /* chips older than TGUI9660 have only 1 width bit in AddColReg */
797 /* touching the other one breaks I2C/DDC */
798 if (par->chip_id == TGUI9440 || par->chip_id == CYBER9320)
799 write3X4(par, AddColReg,
800 (read3X4(par, AddColReg) & 0xEF) | ((width & 0x100) >> 4));
801 else
802 write3X4(par, AddColReg,
803 (read3X4(par, AddColReg) & 0xCF) | ((width & 0x300) >> 4));
804 }
805
806 /* For resolutions smaller than FP resolution stretch */
screen_stretch(struct tridentfb_par * par)807 static void screen_stretch(struct tridentfb_par *par)
808 {
809 if (par->chip_id != CYBERBLADEXPAi1)
810 write3CE(par, BiosReg, 0);
811 else
812 write3CE(par, BiosReg, 8);
813 write3CE(par, VertStretch, (read3CE(par, VertStretch) & 0x7C) | 1);
814 write3CE(par, HorStretch, (read3CE(par, HorStretch) & 0x7C) | 1);
815 }
816
817 /* For resolutions smaller than FP resolution center */
screen_center(struct tridentfb_par * par)818 static inline void screen_center(struct tridentfb_par *par)
819 {
820 write3CE(par, VertStretch, (read3CE(par, VertStretch) & 0x7C) | 0x80);
821 write3CE(par, HorStretch, (read3CE(par, HorStretch) & 0x7C) | 0x80);
822 }
823
824 /* Address of first shown pixel in display memory */
set_screen_start(struct tridentfb_par * par,int base)825 static void set_screen_start(struct tridentfb_par *par, int base)
826 {
827 u8 tmp;
828 write3X4(par, VGA_CRTC_START_LO, base & 0xFF);
829 write3X4(par, VGA_CRTC_START_HI, (base & 0xFF00) >> 8);
830 tmp = read3X4(par, CRTCModuleTest) & 0xDF;
831 write3X4(par, CRTCModuleTest, tmp | ((base & 0x10000) >> 11));
832 tmp = read3X4(par, CRTHiOrd) & 0xF8;
833 write3X4(par, CRTHiOrd, tmp | ((base & 0xE0000) >> 17));
834 }
835
836 /* Set dotclock frequency */
set_vclk(struct tridentfb_par * par,unsigned long freq)837 static void set_vclk(struct tridentfb_par *par, unsigned long freq)
838 {
839 int m, n, k;
840 unsigned long fi, d, di;
841 unsigned char best_m = 0, best_n = 0, best_k = 0;
842 unsigned char hi, lo;
843 unsigned char shift = !is_oldclock(par->chip_id) ? 2 : 1;
844
845 d = 20000;
846 for (k = shift; k >= 0; k--)
847 for (m = 1; m < 32; m++) {
848 n = ((m + 2) << shift) - 8;
849 for (n = (n < 0 ? 0 : n); n < 122; n++) {
850 fi = ((14318l * (n + 8)) / (m + 2)) >> k;
851 di = abs(fi - freq);
852 if (di < d || (di == d && k == best_k)) {
853 d = di;
854 best_n = n;
855 best_m = m;
856 best_k = k;
857 }
858 if (fi > freq)
859 break;
860 }
861 }
862
863 if (is_oldclock(par->chip_id)) {
864 lo = best_n | (best_m << 7);
865 hi = (best_m >> 1) | (best_k << 4);
866 } else {
867 lo = best_n;
868 hi = best_m | (best_k << 6);
869 }
870
871 if (is3Dchip(par->chip_id)) {
872 vga_mm_wseq(par->io_virt, ClockHigh, hi);
873 vga_mm_wseq(par->io_virt, ClockLow, lo);
874 } else {
875 t_outb(par, lo, 0x43C8);
876 t_outb(par, hi, 0x43C9);
877 }
878 debug("VCLK = %X %X\n", hi, lo);
879 }
880
881 /* Set number of lines for flat panels*/
set_number_of_lines(struct tridentfb_par * par,int lines)882 static void set_number_of_lines(struct tridentfb_par *par, int lines)
883 {
884 int tmp = read3CE(par, CyberEnhance) & 0x8F;
885 if (lines > 1024)
886 tmp |= 0x50;
887 else if (lines > 768)
888 tmp |= 0x30;
889 else if (lines > 600)
890 tmp |= 0x20;
891 else if (lines > 480)
892 tmp |= 0x10;
893 write3CE(par, CyberEnhance, tmp);
894 }
895
896 /*
897 * If we see that FP is active we assume we have one.
898 * Otherwise we have a CRT display. User can override.
899 */
is_flatpanel(struct tridentfb_par * par)900 static int is_flatpanel(struct tridentfb_par *par)
901 {
902 if (fp)
903 return 1;
904 if (crt || !iscyber(par->chip_id))
905 return 0;
906 return (read3CE(par, FPConfig) & 0x10) ? 1 : 0;
907 }
908
909 /* Try detecting the video memory size */
get_memsize(struct tridentfb_par * par)910 static unsigned int get_memsize(struct tridentfb_par *par)
911 {
912 unsigned char tmp, tmp2;
913 unsigned int k;
914
915 /* If memory size provided by user */
916 if (memsize)
917 k = memsize * Kb;
918 else
919 switch (par->chip_id) {
920 case CYBER9525DVD:
921 k = 2560 * Kb;
922 break;
923 default:
924 tmp = read3X4(par, SPR) & 0x0F;
925 switch (tmp) {
926
927 case 0x01:
928 k = 512 * Kb;
929 break;
930 case 0x02:
931 k = 6 * Mb; /* XP */
932 break;
933 case 0x03:
934 k = 1 * Mb;
935 break;
936 case 0x04:
937 k = 8 * Mb;
938 break;
939 case 0x06:
940 k = 10 * Mb; /* XP */
941 break;
942 case 0x07:
943 k = 2 * Mb;
944 break;
945 case 0x08:
946 k = 12 * Mb; /* XP */
947 break;
948 case 0x0A:
949 k = 14 * Mb; /* XP */
950 break;
951 case 0x0C:
952 k = 16 * Mb; /* XP */
953 break;
954 case 0x0E: /* XP */
955
956 tmp2 = vga_mm_rseq(par->io_virt, 0xC1);
957 switch (tmp2) {
958 case 0x00:
959 k = 20 * Mb;
960 break;
961 case 0x01:
962 k = 24 * Mb;
963 break;
964 case 0x10:
965 k = 28 * Mb;
966 break;
967 case 0x11:
968 k = 32 * Mb;
969 break;
970 default:
971 k = 1 * Mb;
972 break;
973 }
974 break;
975
976 case 0x0F:
977 k = 4 * Mb;
978 break;
979 default:
980 k = 1 * Mb;
981 break;
982 }
983 }
984
985 k -= memdiff * Kb;
986 output("framebuffer size = %d Kb\n", k / Kb);
987 return k;
988 }
989
990 /* See if we can handle the video mode described in var */
tridentfb_check_var(struct fb_var_screeninfo * var,struct fb_info * info)991 static int tridentfb_check_var(struct fb_var_screeninfo *var,
992 struct fb_info *info)
993 {
994 struct tridentfb_par *par = info->par;
995 int bpp = var->bits_per_pixel;
996 int line_length;
997 int ramdac = 230000; /* 230MHz for most 3D chips */
998 debug("enter\n");
999
1000 if (!var->pixclock)
1001 return -EINVAL;
1002
1003 /* check color depth */
1004 if (bpp == 24)
1005 bpp = var->bits_per_pixel = 32;
1006 if (bpp != 8 && bpp != 16 && bpp != 32)
1007 return -EINVAL;
1008 if (par->chip_id == TGUI9440 && bpp == 32)
1009 return -EINVAL;
1010 /* check whether resolution fits on panel and in memory */
1011 if (par->flatpanel && nativex && var->xres > nativex)
1012 return -EINVAL;
1013 /* various resolution checks */
1014 var->xres = (var->xres + 7) & ~0x7;
1015 if (var->xres > var->xres_virtual)
1016 var->xres_virtual = var->xres;
1017 if (var->yres > var->yres_virtual)
1018 var->yres_virtual = var->yres;
1019 if (var->xres_virtual > 4095 || var->yres > 2048)
1020 return -EINVAL;
1021 /* prevent from position overflow for acceleration */
1022 if (var->yres_virtual > 0xffff)
1023 return -EINVAL;
1024 line_length = var->xres_virtual * bpp / 8;
1025
1026 if (!is3Dchip(par->chip_id) &&
1027 !(info->flags & FBINFO_HWACCEL_DISABLED)) {
1028 /* acceleration requires line length to be power of 2 */
1029 if (line_length <= 512)
1030 var->xres_virtual = 512 * 8 / bpp;
1031 else if (line_length <= 1024)
1032 var->xres_virtual = 1024 * 8 / bpp;
1033 else if (line_length <= 2048)
1034 var->xres_virtual = 2048 * 8 / bpp;
1035 else if (line_length <= 4096)
1036 var->xres_virtual = 4096 * 8 / bpp;
1037 else if (line_length <= 8192)
1038 var->xres_virtual = 8192 * 8 / bpp;
1039 else
1040 return -EINVAL;
1041
1042 line_length = var->xres_virtual * bpp / 8;
1043 }
1044
1045 /* datasheet specifies how to set panning only up to 4 MB */
1046 if (line_length * (var->yres_virtual - var->yres) > (4 << 20))
1047 var->yres_virtual = ((4 << 20) / line_length) + var->yres;
1048
1049 if (line_length * var->yres_virtual > info->fix.smem_len)
1050 return -EINVAL;
1051
1052 switch (bpp) {
1053 case 8:
1054 var->red.offset = 0;
1055 var->red.length = 8;
1056 var->green = var->red;
1057 var->blue = var->red;
1058 break;
1059 case 16:
1060 var->red.offset = 11;
1061 var->green.offset = 5;
1062 var->blue.offset = 0;
1063 var->red.length = 5;
1064 var->green.length = 6;
1065 var->blue.length = 5;
1066 break;
1067 case 32:
1068 var->red.offset = 16;
1069 var->green.offset = 8;
1070 var->blue.offset = 0;
1071 var->red.length = 8;
1072 var->green.length = 8;
1073 var->blue.length = 8;
1074 break;
1075 default:
1076 return -EINVAL;
1077 }
1078
1079 if (is_xp(par->chip_id))
1080 ramdac = 350000;
1081
1082 switch (par->chip_id) {
1083 case TGUI9440:
1084 ramdac = (bpp >= 16) ? 45000 : 90000;
1085 break;
1086 case CYBER9320:
1087 case TGUI9660:
1088 ramdac = 135000;
1089 break;
1090 case PROVIDIA9685:
1091 case CYBER9388:
1092 case CYBER9382:
1093 case CYBER9385:
1094 ramdac = 170000;
1095 break;
1096 }
1097
1098 /* The clock is doubled for 32 bpp */
1099 if (bpp == 32)
1100 ramdac /= 2;
1101
1102 if (PICOS2KHZ(var->pixclock) > ramdac)
1103 return -EINVAL;
1104
1105 debug("exit\n");
1106
1107 return 0;
1108
1109 }
1110
1111 /* Pan the display */
tridentfb_pan_display(struct fb_var_screeninfo * var,struct fb_info * info)1112 static int tridentfb_pan_display(struct fb_var_screeninfo *var,
1113 struct fb_info *info)
1114 {
1115 struct tridentfb_par *par = info->par;
1116 unsigned int offset;
1117
1118 debug("enter\n");
1119 offset = (var->xoffset + (var->yoffset * info->var.xres_virtual))
1120 * info->var.bits_per_pixel / 32;
1121 set_screen_start(par, offset);
1122 debug("exit\n");
1123 return 0;
1124 }
1125
shadowmode_on(struct tridentfb_par * par)1126 static inline void shadowmode_on(struct tridentfb_par *par)
1127 {
1128 write3CE(par, CyberControl, read3CE(par, CyberControl) | 0x81);
1129 }
1130
1131 /* Set the hardware to the requested video mode */
tridentfb_set_par(struct fb_info * info)1132 static int tridentfb_set_par(struct fb_info *info)
1133 {
1134 struct tridentfb_par *par = info->par;
1135 u32 htotal, hdispend, hsyncstart, hsyncend, hblankstart, hblankend;
1136 u32 vtotal, vdispend, vsyncstart, vsyncend, vblankstart, vblankend;
1137 struct fb_var_screeninfo *var = &info->var;
1138 int bpp = var->bits_per_pixel;
1139 unsigned char tmp;
1140 unsigned long vclk;
1141
1142 debug("enter\n");
1143 hdispend = var->xres / 8 - 1;
1144 hsyncstart = (var->xres + var->right_margin) / 8;
1145 hsyncend = (var->xres + var->right_margin + var->hsync_len) / 8;
1146 htotal = (var->xres + var->left_margin + var->right_margin +
1147 var->hsync_len) / 8 - 5;
1148 hblankstart = hdispend + 1;
1149 hblankend = htotal + 3;
1150
1151 vdispend = var->yres - 1;
1152 vsyncstart = var->yres + var->lower_margin;
1153 vsyncend = vsyncstart + var->vsync_len;
1154 vtotal = var->upper_margin + vsyncend - 2;
1155 vblankstart = vdispend + 1;
1156 vblankend = vtotal;
1157
1158 if (info->var.vmode & FB_VMODE_INTERLACED) {
1159 vtotal /= 2;
1160 vdispend /= 2;
1161 vsyncstart /= 2;
1162 vsyncend /= 2;
1163 vblankstart /= 2;
1164 vblankend /= 2;
1165 }
1166
1167 enable_mmio(par);
1168 crtc_unlock(par);
1169 write3CE(par, CyberControl, 8);
1170 tmp = 0xEB;
1171 if (var->sync & FB_SYNC_HOR_HIGH_ACT)
1172 tmp &= ~0x40;
1173 if (var->sync & FB_SYNC_VERT_HIGH_ACT)
1174 tmp &= ~0x80;
1175
1176 if (par->flatpanel && var->xres < nativex) {
1177 /*
1178 * on flat panels with native size larger
1179 * than requested resolution decide whether
1180 * we stretch or center
1181 */
1182 t_outb(par, tmp | 0xC0, VGA_MIS_W);
1183
1184 shadowmode_on(par);
1185
1186 if (center)
1187 screen_center(par);
1188 else if (stretch)
1189 screen_stretch(par);
1190
1191 } else {
1192 t_outb(par, tmp, VGA_MIS_W);
1193 write3CE(par, CyberControl, 8);
1194 }
1195
1196 /* vertical timing values */
1197 write3X4(par, VGA_CRTC_V_TOTAL, vtotal & 0xFF);
1198 write3X4(par, VGA_CRTC_V_DISP_END, vdispend & 0xFF);
1199 write3X4(par, VGA_CRTC_V_SYNC_START, vsyncstart & 0xFF);
1200 write3X4(par, VGA_CRTC_V_SYNC_END, (vsyncend & 0x0F));
1201 write3X4(par, VGA_CRTC_V_BLANK_START, vblankstart & 0xFF);
1202 write3X4(par, VGA_CRTC_V_BLANK_END, vblankend & 0xFF);
1203
1204 /* horizontal timing values */
1205 write3X4(par, VGA_CRTC_H_TOTAL, htotal & 0xFF);
1206 write3X4(par, VGA_CRTC_H_DISP, hdispend & 0xFF);
1207 write3X4(par, VGA_CRTC_H_SYNC_START, hsyncstart & 0xFF);
1208 write3X4(par, VGA_CRTC_H_SYNC_END,
1209 (hsyncend & 0x1F) | ((hblankend & 0x20) << 2));
1210 write3X4(par, VGA_CRTC_H_BLANK_START, hblankstart & 0xFF);
1211 write3X4(par, VGA_CRTC_H_BLANK_END, hblankend & 0x1F);
1212
1213 /* higher bits of vertical timing values */
1214 tmp = 0x10;
1215 if (vtotal & 0x100) tmp |= 0x01;
1216 if (vdispend & 0x100) tmp |= 0x02;
1217 if (vsyncstart & 0x100) tmp |= 0x04;
1218 if (vblankstart & 0x100) tmp |= 0x08;
1219
1220 if (vtotal & 0x200) tmp |= 0x20;
1221 if (vdispend & 0x200) tmp |= 0x40;
1222 if (vsyncstart & 0x200) tmp |= 0x80;
1223 write3X4(par, VGA_CRTC_OVERFLOW, tmp);
1224
1225 tmp = read3X4(par, CRTHiOrd) & 0x07;
1226 tmp |= 0x08; /* line compare bit 10 */
1227 if (vtotal & 0x400) tmp |= 0x80;
1228 if (vblankstart & 0x400) tmp |= 0x40;
1229 if (vsyncstart & 0x400) tmp |= 0x20;
1230 if (vdispend & 0x400) tmp |= 0x10;
1231 write3X4(par, CRTHiOrd, tmp);
1232
1233 tmp = (htotal >> 8) & 0x01;
1234 tmp |= (hdispend >> 7) & 0x02;
1235 tmp |= (hsyncstart >> 5) & 0x08;
1236 tmp |= (hblankstart >> 4) & 0x10;
1237 write3X4(par, HorizOverflow, tmp);
1238
1239 tmp = 0x40;
1240 if (vblankstart & 0x200) tmp |= 0x20;
1241 //FIXME if (info->var.vmode & FB_VMODE_DOUBLE) tmp |= 0x80; /* double scan for 200 line modes */
1242 write3X4(par, VGA_CRTC_MAX_SCAN, tmp);
1243
1244 write3X4(par, VGA_CRTC_LINE_COMPARE, 0xFF);
1245 write3X4(par, VGA_CRTC_PRESET_ROW, 0);
1246 write3X4(par, VGA_CRTC_MODE, 0xC3);
1247
1248 write3X4(par, LinearAddReg, 0x20); /* enable linear addressing */
1249
1250 tmp = (info->var.vmode & FB_VMODE_INTERLACED) ? 0x84 : 0x80;
1251 /* enable access extended memory */
1252 write3X4(par, CRTCModuleTest, tmp);
1253 tmp = read3CE(par, MiscIntContReg) & ~0x4;
1254 if (info->var.vmode & FB_VMODE_INTERLACED)
1255 tmp |= 0x4;
1256 write3CE(par, MiscIntContReg, tmp);
1257
1258 /* enable GE for text acceleration */
1259 write3X4(par, GraphEngReg, 0x80);
1260
1261 switch (bpp) {
1262 case 8:
1263 tmp = 0x00;
1264 break;
1265 case 16:
1266 tmp = 0x05;
1267 break;
1268 case 24:
1269 tmp = 0x29;
1270 break;
1271 case 32:
1272 tmp = 0x09;
1273 break;
1274 }
1275
1276 write3X4(par, PixelBusReg, tmp);
1277
1278 tmp = read3X4(par, DRAMControl);
1279 if (!is_oldprotect(par->chip_id))
1280 tmp |= 0x10;
1281 if (iscyber(par->chip_id))
1282 tmp |= 0x20;
1283 write3X4(par, DRAMControl, tmp); /* both IO, linear enable */
1284
1285 write3X4(par, InterfaceSel, read3X4(par, InterfaceSel) | 0x40);
1286 if (!is_xp(par->chip_id))
1287 write3X4(par, Performance, read3X4(par, Performance) | 0x10);
1288 /* MMIO & PCI read and write burst enable */
1289 if (par->chip_id != TGUI9440 && par->chip_id != IMAGE975)
1290 write3X4(par, PCIReg, read3X4(par, PCIReg) | 0x06);
1291
1292 vga_mm_wseq(par->io_virt, 0, 3);
1293 vga_mm_wseq(par->io_virt, 1, 1); /* set char clock 8 dots wide */
1294 /* enable 4 maps because needed in chain4 mode */
1295 vga_mm_wseq(par->io_virt, 2, 0x0F);
1296 vga_mm_wseq(par->io_virt, 3, 0);
1297 vga_mm_wseq(par->io_virt, 4, 0x0E); /* memory mode enable bitmaps ?? */
1298
1299 /* convert from picoseconds to kHz */
1300 vclk = PICOS2KHZ(info->var.pixclock);
1301
1302 /* divide clock by 2 if 32bpp chain4 mode display and CPU path */
1303 tmp = read3CE(par, MiscExtFunc) & 0xF0;
1304 if (bpp == 32 || (par->chip_id == TGUI9440 && bpp == 16)) {
1305 tmp |= 8;
1306 vclk *= 2;
1307 }
1308 set_vclk(par, vclk);
1309 write3CE(par, MiscExtFunc, tmp | 0x12);
1310 write3CE(par, 0x5, 0x40); /* no CGA compat, allow 256 col */
1311 write3CE(par, 0x6, 0x05); /* graphics mode */
1312 write3CE(par, 0x7, 0x0F); /* planes? */
1313
1314 /* graphics mode and support 256 color modes */
1315 writeAttr(par, 0x10, 0x41);
1316 writeAttr(par, 0x12, 0x0F); /* planes */
1317 writeAttr(par, 0x13, 0); /* horizontal pel panning */
1318
1319 /* colors */
1320 for (tmp = 0; tmp < 0x10; tmp++)
1321 writeAttr(par, tmp, tmp);
1322 fb_readb(par->io_virt + VGA_IS1_RC); /* flip-flop to index */
1323 t_outb(par, 0x20, VGA_ATT_W); /* enable attr */
1324
1325 switch (bpp) {
1326 case 8:
1327 tmp = 0;
1328 break;
1329 case 16:
1330 tmp = 0x30;
1331 break;
1332 case 24:
1333 case 32:
1334 tmp = 0xD0;
1335 break;
1336 }
1337
1338 t_inb(par, VGA_PEL_IW);
1339 t_inb(par, VGA_PEL_MSK);
1340 t_inb(par, VGA_PEL_MSK);
1341 t_inb(par, VGA_PEL_MSK);
1342 t_inb(par, VGA_PEL_MSK);
1343 t_outb(par, tmp, VGA_PEL_MSK);
1344 t_inb(par, VGA_PEL_IW);
1345
1346 if (par->flatpanel)
1347 set_number_of_lines(par, info->var.yres);
1348 info->fix.line_length = info->var.xres_virtual * bpp / 8;
1349 set_lwidth(par, info->fix.line_length / 8);
1350
1351 if (!(info->flags & FBINFO_HWACCEL_DISABLED))
1352 par->init_accel(par, info->var.xres_virtual, bpp);
1353
1354 info->fix.visual = (bpp == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
1355 info->cmap.len = (bpp == 8) ? 256 : 16;
1356 debug("exit\n");
1357 return 0;
1358 }
1359
1360 /* Set one color register */
tridentfb_setcolreg(unsigned regno,unsigned red,unsigned green,unsigned blue,unsigned transp,struct fb_info * info)1361 static int tridentfb_setcolreg(unsigned regno, unsigned red, unsigned green,
1362 unsigned blue, unsigned transp,
1363 struct fb_info *info)
1364 {
1365 int bpp = info->var.bits_per_pixel;
1366 struct tridentfb_par *par = info->par;
1367
1368 if (regno >= info->cmap.len)
1369 return 1;
1370
1371 if (bpp == 8) {
1372 t_outb(par, 0xFF, VGA_PEL_MSK);
1373 t_outb(par, regno, VGA_PEL_IW);
1374
1375 t_outb(par, red >> 10, VGA_PEL_D);
1376 t_outb(par, green >> 10, VGA_PEL_D);
1377 t_outb(par, blue >> 10, VGA_PEL_D);
1378
1379 } else if (regno < 16) {
1380 if (bpp == 16) { /* RGB 565 */
1381 u32 col;
1382
1383 col = (red & 0xF800) | ((green & 0xFC00) >> 5) |
1384 ((blue & 0xF800) >> 11);
1385 col |= col << 16;
1386 ((u32 *)(info->pseudo_palette))[regno] = col;
1387 } else if (bpp == 32) /* ARGB 8888 */
1388 ((u32 *)info->pseudo_palette)[regno] =
1389 ((transp & 0xFF00) << 16) |
1390 ((red & 0xFF00) << 8) |
1391 ((green & 0xFF00)) |
1392 ((blue & 0xFF00) >> 8);
1393 }
1394
1395 return 0;
1396 }
1397
1398 /* Try blanking the screen. For flat panels it does nothing */
tridentfb_blank(int blank_mode,struct fb_info * info)1399 static int tridentfb_blank(int blank_mode, struct fb_info *info)
1400 {
1401 unsigned char PMCont, DPMSCont;
1402 struct tridentfb_par *par = info->par;
1403
1404 debug("enter\n");
1405 if (par->flatpanel)
1406 return 0;
1407 t_outb(par, 0x04, 0x83C8); /* Read DPMS Control */
1408 PMCont = t_inb(par, 0x83C6) & 0xFC;
1409 DPMSCont = read3CE(par, PowerStatus) & 0xFC;
1410 switch (blank_mode) {
1411 case FB_BLANK_UNBLANK:
1412 /* Screen: On, HSync: On, VSync: On */
1413 case FB_BLANK_NORMAL:
1414 /* Screen: Off, HSync: On, VSync: On */
1415 PMCont |= 0x03;
1416 DPMSCont |= 0x00;
1417 break;
1418 case FB_BLANK_HSYNC_SUSPEND:
1419 /* Screen: Off, HSync: Off, VSync: On */
1420 PMCont |= 0x02;
1421 DPMSCont |= 0x01;
1422 break;
1423 case FB_BLANK_VSYNC_SUSPEND:
1424 /* Screen: Off, HSync: On, VSync: Off */
1425 PMCont |= 0x02;
1426 DPMSCont |= 0x02;
1427 break;
1428 case FB_BLANK_POWERDOWN:
1429 /* Screen: Off, HSync: Off, VSync: Off */
1430 PMCont |= 0x00;
1431 DPMSCont |= 0x03;
1432 break;
1433 }
1434
1435 write3CE(par, PowerStatus, DPMSCont);
1436 t_outb(par, 4, 0x83C8);
1437 t_outb(par, PMCont, 0x83C6);
1438
1439 debug("exit\n");
1440
1441 /* let fbcon do a softblank for us */
1442 return (blank_mode == FB_BLANK_NORMAL) ? 1 : 0;
1443 }
1444
1445 static const struct fb_ops tridentfb_ops = {
1446 .owner = THIS_MODULE,
1447 .fb_setcolreg = tridentfb_setcolreg,
1448 .fb_pan_display = tridentfb_pan_display,
1449 .fb_blank = tridentfb_blank,
1450 .fb_check_var = tridentfb_check_var,
1451 .fb_set_par = tridentfb_set_par,
1452 .fb_fillrect = tridentfb_fillrect,
1453 .fb_copyarea = tridentfb_copyarea,
1454 .fb_imageblit = tridentfb_imageblit,
1455 .fb_sync = tridentfb_sync,
1456 };
1457
trident_pci_probe(struct pci_dev * dev,const struct pci_device_id * id)1458 static int trident_pci_probe(struct pci_dev *dev,
1459 const struct pci_device_id *id)
1460 {
1461 int err;
1462 unsigned char revision;
1463 struct fb_info *info;
1464 struct tridentfb_par *default_par;
1465 int chip3D;
1466 int chip_id;
1467 bool found = false;
1468
1469 err = aperture_remove_conflicting_pci_devices(dev, "tridentfb");
1470 if (err)
1471 return err;
1472
1473 err = pcim_enable_device(dev);
1474 if (err)
1475 return err;
1476
1477 info = framebuffer_alloc(sizeof(struct tridentfb_par), &dev->dev);
1478 if (!info)
1479 return -ENOMEM;
1480 default_par = info->par;
1481
1482 chip_id = id->device;
1483
1484 /* If PCI id is 0x9660 then further detect chip type */
1485
1486 if (chip_id == TGUI9660) {
1487 revision = vga_io_rseq(RevisionID);
1488
1489 switch (revision) {
1490 case 0x21:
1491 chip_id = PROVIDIA9685;
1492 break;
1493 case 0x22:
1494 case 0x23:
1495 chip_id = CYBER9397;
1496 break;
1497 case 0x2A:
1498 chip_id = CYBER9397DVD;
1499 break;
1500 case 0x30:
1501 case 0x33:
1502 case 0x34:
1503 case 0x35:
1504 case 0x38:
1505 case 0x3A:
1506 case 0xB3:
1507 chip_id = CYBER9385;
1508 break;
1509 case 0x40 ... 0x43:
1510 chip_id = CYBER9382;
1511 break;
1512 case 0x4A:
1513 chip_id = CYBER9388;
1514 break;
1515 default:
1516 break;
1517 }
1518 }
1519
1520 chip3D = is3Dchip(chip_id);
1521
1522 if (is_xp(chip_id)) {
1523 default_par->init_accel = xp_init_accel;
1524 default_par->wait_engine = xp_wait_engine;
1525 default_par->fill_rect = xp_fill_rect;
1526 default_par->copy_rect = xp_copy_rect;
1527 tridentfb_fix.accel = FB_ACCEL_TRIDENT_BLADEXP;
1528 } else if (is_blade(chip_id)) {
1529 default_par->init_accel = blade_init_accel;
1530 default_par->wait_engine = blade_wait_engine;
1531 default_par->fill_rect = blade_fill_rect;
1532 default_par->copy_rect = blade_copy_rect;
1533 default_par->image_blit = blade_image_blit;
1534 tridentfb_fix.accel = FB_ACCEL_TRIDENT_BLADE3D;
1535 } else if (chip3D) { /* 3DImage family left */
1536 default_par->init_accel = image_init_accel;
1537 default_par->wait_engine = image_wait_engine;
1538 default_par->fill_rect = image_fill_rect;
1539 default_par->copy_rect = image_copy_rect;
1540 tridentfb_fix.accel = FB_ACCEL_TRIDENT_3DIMAGE;
1541 } else { /* TGUI 9440/96XX family */
1542 default_par->init_accel = tgui_init_accel;
1543 default_par->wait_engine = xp_wait_engine;
1544 default_par->fill_rect = tgui_fill_rect;
1545 default_par->copy_rect = tgui_copy_rect;
1546 tridentfb_fix.accel = FB_ACCEL_TRIDENT_TGUI;
1547 }
1548
1549 default_par->chip_id = chip_id;
1550
1551 /* setup MMIO region */
1552 tridentfb_fix.mmio_start = pci_resource_start(dev, 1);
1553 tridentfb_fix.mmio_len = pci_resource_len(dev, 1);
1554
1555 if (!request_mem_region(tridentfb_fix.mmio_start,
1556 tridentfb_fix.mmio_len, "tridentfb")) {
1557 debug("request_region failed!\n");
1558 framebuffer_release(info);
1559 return -1;
1560 }
1561
1562 default_par->io_virt = ioremap(tridentfb_fix.mmio_start,
1563 tridentfb_fix.mmio_len);
1564
1565 if (!default_par->io_virt) {
1566 debug("ioremap failed\n");
1567 err = -1;
1568 goto out_unmap1;
1569 }
1570
1571 enable_mmio(default_par);
1572
1573 /* setup framebuffer memory */
1574 tridentfb_fix.smem_start = pci_resource_start(dev, 0);
1575 tridentfb_fix.smem_len = get_memsize(default_par);
1576
1577 if (!request_mem_region(tridentfb_fix.smem_start,
1578 tridentfb_fix.smem_len, "tridentfb")) {
1579 debug("request_mem_region failed!\n");
1580 disable_mmio(info->par);
1581 err = -1;
1582 goto out_unmap1;
1583 }
1584
1585 info->screen_base = ioremap(tridentfb_fix.smem_start,
1586 tridentfb_fix.smem_len);
1587
1588 if (!info->screen_base) {
1589 debug("ioremap failed\n");
1590 err = -1;
1591 goto out_unmap2;
1592 }
1593
1594 default_par->flatpanel = is_flatpanel(default_par);
1595
1596 if (default_par->flatpanel)
1597 nativex = get_nativex(default_par);
1598
1599 info->fix = tridentfb_fix;
1600 info->fbops = &tridentfb_ops;
1601 info->pseudo_palette = default_par->pseudo_pal;
1602
1603 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
1604 if (!noaccel && default_par->init_accel) {
1605 info->flags &= ~FBINFO_HWACCEL_DISABLED;
1606 info->flags |= FBINFO_HWACCEL_COPYAREA;
1607 info->flags |= FBINFO_HWACCEL_FILLRECT;
1608 } else
1609 info->flags |= FBINFO_HWACCEL_DISABLED;
1610
1611 if (is_blade(chip_id) && chip_id != BLADE3D)
1612 info->flags |= FBINFO_READS_FAST;
1613
1614 info->pixmap.addr = kmalloc(4096, GFP_KERNEL);
1615 if (!info->pixmap.addr) {
1616 err = -ENOMEM;
1617 goto out_unmap2;
1618 }
1619
1620 info->pixmap.size = 4096;
1621 info->pixmap.buf_align = 4;
1622 info->pixmap.scan_align = 1;
1623 info->pixmap.access_align = 32;
1624 info->pixmap.flags = FB_PIXMAP_SYSTEM;
1625 info->var.bits_per_pixel = 8;
1626
1627 if (default_par->image_blit) {
1628 info->flags |= FBINFO_HWACCEL_IMAGEBLIT;
1629 info->pixmap.scan_align = 4;
1630 }
1631
1632 if (noaccel) {
1633 printk(KERN_DEBUG "disabling acceleration\n");
1634 info->flags |= FBINFO_HWACCEL_DISABLED;
1635 info->pixmap.scan_align = 1;
1636 }
1637
1638 if (tridentfb_setup_ddc_bus(info) == 0) {
1639 u8 *edid = fb_ddc_read(&default_par->ddc_adapter);
1640
1641 default_par->ddc_registered = true;
1642 if (edid) {
1643 fb_edid_to_monspecs(edid, &info->monspecs);
1644 kfree(edid);
1645 if (!info->monspecs.modedb)
1646 dev_err(info->device, "error getting mode database\n");
1647 else {
1648 const struct fb_videomode *m;
1649
1650 fb_videomode_to_modelist(info->monspecs.modedb,
1651 info->monspecs.modedb_len,
1652 &info->modelist);
1653 m = fb_find_best_display(&info->monspecs,
1654 &info->modelist);
1655 if (m) {
1656 fb_videomode_to_var(&info->var, m);
1657 /* fill all other info->var's fields */
1658 if (tridentfb_check_var(&info->var,
1659 info) == 0)
1660 found = true;
1661 }
1662 }
1663 }
1664 }
1665
1666 if (!mode_option && !found)
1667 mode_option = "640x480-8@60";
1668
1669 /* Prepare startup mode */
1670 if (mode_option) {
1671 err = fb_find_mode(&info->var, info, mode_option,
1672 info->monspecs.modedb,
1673 info->monspecs.modedb_len,
1674 NULL, info->var.bits_per_pixel);
1675 if (!err || err == 4) {
1676 err = -EINVAL;
1677 dev_err(info->device, "mode %s not found\n",
1678 mode_option);
1679 fb_destroy_modedb(info->monspecs.modedb);
1680 info->monspecs.modedb = NULL;
1681 goto out_unmap2;
1682 }
1683 }
1684
1685 fb_destroy_modedb(info->monspecs.modedb);
1686 info->monspecs.modedb = NULL;
1687
1688 err = fb_alloc_cmap(&info->cmap, 256, 0);
1689 if (err < 0)
1690 goto out_unmap2;
1691
1692 info->var.activate |= FB_ACTIVATE_NOW;
1693 info->device = &dev->dev;
1694 if (register_framebuffer(info) < 0) {
1695 printk(KERN_ERR "tridentfb: could not register framebuffer\n");
1696 fb_dealloc_cmap(&info->cmap);
1697 err = -EINVAL;
1698 goto out_unmap2;
1699 }
1700 output("fb%d: %s frame buffer device %dx%d-%dbpp\n",
1701 info->node, info->fix.id, info->var.xres,
1702 info->var.yres, info->var.bits_per_pixel);
1703
1704 pci_set_drvdata(dev, info);
1705 return 0;
1706
1707 out_unmap2:
1708 if (default_par->ddc_registered)
1709 i2c_del_adapter(&default_par->ddc_adapter);
1710 kfree(info->pixmap.addr);
1711 if (info->screen_base)
1712 iounmap(info->screen_base);
1713 disable_mmio(info->par);
1714 out_unmap1:
1715 if (default_par->io_virt)
1716 iounmap(default_par->io_virt);
1717 framebuffer_release(info);
1718 return err;
1719 }
1720
trident_pci_remove(struct pci_dev * dev)1721 static void trident_pci_remove(struct pci_dev *dev)
1722 {
1723 struct fb_info *info = pci_get_drvdata(dev);
1724 struct tridentfb_par *par = info->par;
1725
1726 unregister_framebuffer(info);
1727 if (par->ddc_registered)
1728 i2c_del_adapter(&par->ddc_adapter);
1729 iounmap(par->io_virt);
1730 iounmap(info->screen_base);
1731 kfree(info->pixmap.addr);
1732 fb_dealloc_cmap(&info->cmap);
1733 framebuffer_release(info);
1734 }
1735
1736 /* List of boards that we are trying to support */
1737 static const struct pci_device_id trident_devices[] = {
1738 {PCI_VENDOR_ID_TRIDENT, BLADE3D, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1739 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEi7, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1740 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEi7D, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1741 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEi1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1742 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEi1D, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1743 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEAi1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1744 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEAi1D, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1745 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEE4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1746 {PCI_VENDOR_ID_TRIDENT, TGUI9440, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1747 {PCI_VENDOR_ID_TRIDENT, TGUI9660, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1748 {PCI_VENDOR_ID_TRIDENT, IMAGE975, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1749 {PCI_VENDOR_ID_TRIDENT, IMAGE985, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1750 {PCI_VENDOR_ID_TRIDENT, CYBER9320, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1751 {PCI_VENDOR_ID_TRIDENT, CYBER9388, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1752 {PCI_VENDOR_ID_TRIDENT, CYBER9520, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1753 {PCI_VENDOR_ID_TRIDENT, CYBER9525DVD, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1754 {PCI_VENDOR_ID_TRIDENT, CYBER9397, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1755 {PCI_VENDOR_ID_TRIDENT, CYBER9397DVD, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1756 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEXPAi1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1757 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEXPm8, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1758 {PCI_VENDOR_ID_TRIDENT, CYBERBLADEXPm16, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1759 {0,}
1760 };
1761
1762 MODULE_DEVICE_TABLE(pci, trident_devices);
1763
1764 static struct pci_driver tridentfb_pci_driver = {
1765 .name = "tridentfb",
1766 .id_table = trident_devices,
1767 .probe = trident_pci_probe,
1768 .remove = trident_pci_remove,
1769 };
1770
1771 /*
1772 * Parse user specified options (`video=trident:')
1773 * example:
1774 * video=trident:800x600,bpp=16,noaccel
1775 */
1776 #ifndef MODULE
tridentfb_setup(char * options)1777 static int __init tridentfb_setup(char *options)
1778 {
1779 char *opt;
1780 if (!options || !*options)
1781 return 0;
1782 while ((opt = strsep(&options, ",")) != NULL) {
1783 if (!*opt)
1784 continue;
1785 if (!strncmp(opt, "noaccel", 7))
1786 noaccel = 1;
1787 else if (!strncmp(opt, "fp", 2))
1788 fp = 1;
1789 else if (!strncmp(opt, "crt", 3))
1790 fp = 0;
1791 else if (!strncmp(opt, "bpp=", 4))
1792 bpp = simple_strtoul(opt + 4, NULL, 0);
1793 else if (!strncmp(opt, "center", 6))
1794 center = 1;
1795 else if (!strncmp(opt, "stretch", 7))
1796 stretch = 1;
1797 else if (!strncmp(opt, "memsize=", 8))
1798 memsize = simple_strtoul(opt + 8, NULL, 0);
1799 else if (!strncmp(opt, "memdiff=", 8))
1800 memdiff = simple_strtoul(opt + 8, NULL, 0);
1801 else if (!strncmp(opt, "nativex=", 8))
1802 nativex = simple_strtoul(opt + 8, NULL, 0);
1803 else
1804 mode_option = opt;
1805 }
1806 return 0;
1807 }
1808 #endif
1809
tridentfb_init(void)1810 static int __init tridentfb_init(void)
1811 {
1812 #ifndef MODULE
1813 char *option = NULL;
1814
1815 if (fb_get_options("tridentfb", &option))
1816 return -ENODEV;
1817 tridentfb_setup(option);
1818 #endif
1819 return pci_register_driver(&tridentfb_pci_driver);
1820 }
1821
tridentfb_exit(void)1822 static void __exit tridentfb_exit(void)
1823 {
1824 pci_unregister_driver(&tridentfb_pci_driver);
1825 }
1826
1827 module_init(tridentfb_init);
1828 module_exit(tridentfb_exit);
1829
1830 MODULE_AUTHOR("Jani Monoses <jani@iv.ro>");
1831 MODULE_DESCRIPTION("Framebuffer driver for Trident cards");
1832 MODULE_LICENSE("GPL");
1833 MODULE_ALIAS("cyblafb");
1834
1835