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Linux 2.6.19.1
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / video / sun3fb.c
blobf80356dfa8e810e479a91ef485bb29bec78b7ff4
1 /*
2 * linux/drivers/video/sun3fb.c -- Frame buffer driver for Sun3
3 *
4 * (C) 1998 Thomas Bogendoerfer
5 *
6 * This driver is bases on sbusfb.c, which is
7 *
8 * Copyright (C) 1998 Jakub Jelinek
9 *
10 * This driver is partly based on the Open Firmware console driver
11 *
12 * Copyright (C) 1997 Geert Uytterhoeven
13 *
14 * and SPARC console subsystem
15 *
16 * Copyright (C) 1995 Peter Zaitcev (zaitcev@yahoo.com)
17 * Copyright (C) 1995-1997 David S. Miller (davem@caip.rutgers.edu)
18 * Copyright (C) 1995-1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
19 * Copyright (C) 1996 Dave Redman (djhr@tadpole.co.uk)
20 * Copyright (C) 1996-1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
21 * Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
22 *
23 * This file is subject to the terms and conditions of the GNU General Public
24 * License. See the file COPYING in the main directory of this archive for
25 * more details.
26 */
27
28 #include <linux/module.h>
29 #include <linux/kernel.h>
30 #include <linux/errno.h>
31 #include <linux/string.h>
32 #include <linux/mm.h>
33 #include <linux/slab.h>
34 #include <linux/vmalloc.h>
35 #include <linux/delay.h>
36 #include <linux/interrupt.h>
37 #include <linux/fb.h>
38 #include <linux/selection.h>
39 #include <linux/init.h>
40 #include <linux/console.h>
41 #include <linux/kd.h>
42 #include <linux/vt_kern.h>
43
44 #include <asm/uaccess.h>
45 #include <asm/pgtable.h> /* io_remap_page_range() */
46
47 #ifdef CONFIG_SUN3
48 #include <asm/oplib.h>
49 #include <asm/machines.h>
50 #include <asm/idprom.h>
51
52 #define CGFOUR_OBMEM_ADDR 0x1f300000
53 #define BWTWO_OBMEM_ADDR 0x1f000000
54 #define BWTWO_OBMEM50_ADDR 0x00100000
55
56 #endif
57 #ifdef CONFIG_SUN3X
58 #include <asm/sun3x.h>
59 #endif
60 #include <video/sbusfb.h>
61
62 #define DEFAULT_CURSOR_BLINK_RATE (2*HZ/5)
63
64 #define CURSOR_SHAPE 1
65 #define CURSOR_BLINK 2
66
67 #define mymemset(x,y) memset(x,0,y)
68
69 /*
70 * Interface used by the world
71 */
72
73 int sun3fb_init(void);
74 void sun3fb_setup(char *options);
75
76 static char fontname[40] __initdata = { 0 };
77 static int curblink __initdata = 1;
78
79 static int sun3fb_get_fix(struct fb_fix_screeninfo *fix, int con,
80 struct fb_info *info);
81 static int sun3fb_get_var(struct fb_var_screeninfo *var, int con,
82 struct fb_info *info);
83 static int sun3fb_set_var(struct fb_var_screeninfo *var, int con,
84 struct fb_info *info);
85 static int sun3fb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
86 struct fb_info *info);
87 static int sun3fb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
88 struct fb_info *info);
89 static int sun3fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
90 u_int transp, struct fb_info *info);
91 static int sun3fb_blank(int blank, struct fb_info *info);
92 static void sun3fb_cursor(struct display *p, int mode, int x, int y);
93 static void sun3fb_clear_margin(struct display *p, int s);
94
95 /*
96 * Interface to the low level console driver
97 */
98
99 static int sun3fbcon_switch(int con, struct fb_info *info);
100 static int sun3fbcon_updatevar(int con, struct fb_info *info);
101
102 /*
103 * Internal routines
104 */
105
106 static int sun3fb_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue,
107 u_int *transp, struct fb_info *info);
108
109 static struct fb_ops sun3fb_ops = {
110 .owner = THIS_MODULE,
111 .fb_get_fix = sun3fb_get_fix,
112 .fb_get_var = sun3fb_get_var,
113 .fb_set_var = sun3fb_set_var,
114 .fb_get_cmap = sun3fb_get_cmap,
115 .fb_set_cmap = sun3fb_set_cmap,
116 .fb_setcolreg = sun3fb_setcolreg,
117 .fb_blank = sun3fb_blank,
118 };
119
120 static void sun3fb_clear_margin(struct display *p, int s)
121 {
122 struct fb_info_sbusfb *fb = sbusfbinfod(p);
123
124 return;
125
126 if (fb->switch_from_graph)
127 (*fb->switch_from_graph)(fb);
128 if (fb->fill) {
129 unsigned short rects [16];
130
131 rects [0] = 0;
132 rects [1] = 0;
133 rects [2] = fb->var.xres_virtual;
134 rects [3] = fb->y_margin;
135 rects [4] = 0;
136 rects [5] = fb->y_margin;
137 rects [6] = fb->x_margin;
138 rects [7] = fb->var.yres_virtual;
139 rects [8] = fb->var.xres_virtual - fb->x_margin;
140 rects [9] = fb->y_margin;
141 rects [10] = fb->var.xres_virtual;
142 rects [11] = fb->var.yres_virtual;
143 rects [12] = fb->x_margin;
144 rects [13] = fb->var.yres_virtual - fb->y_margin;
145 rects [14] = fb->var.xres_virtual - fb->x_margin;
146 rects [15] = fb->var.yres_virtual;
147 (*fb->fill)(fb, p, s, 4, rects);
148 } else {
149 unsigned char *fb_base = fb->info.screen_base, *q;
150 int skip_bytes = fb->y_margin * fb->var.xres_virtual;
151 int scr_size = fb->var.xres_virtual * fb->var.yres_virtual;
152 int h, he, incr, size;
153
154 he = fb->var.yres;
155 if (fb->var.bits_per_pixel == 1) {
156 fb_base -= (skip_bytes + fb->x_margin) / 8;
157 skip_bytes /= 8;
158 scr_size /= 8;
159 mymemset (fb_base, skip_bytes - fb->x_margin / 8);
160 mymemset (fb_base + scr_size - skip_bytes + fb->x_margin / 8, skip_bytes - fb->x_margin / 8);
161 incr = fb->var.xres_virtual / 8;
162 size = fb->x_margin / 8 * 2;
163 for (q = fb_base + skip_bytes - fb->x_margin / 8, h = 0;
164 h <= he; q += incr, h++)
165 mymemset (q, size);
166 } else {
167 fb_base -= (skip_bytes + fb->x_margin);
168 memset (fb_base, attr_bgcol(p,s), skip_bytes - fb->x_margin);
169 memset (fb_base + scr_size - skip_bytes + fb->x_margin, attr_bgcol(p,s), skip_bytes - fb->x_margin);
170 incr = fb->var.xres_virtual;
171 size = fb->x_margin * 2;
172 for (q = fb_base + skip_bytes - fb->x_margin, h = 0;
173 h <= he; q += incr, h++)
174 memset (q, attr_bgcol(p,s), size);
175 }
176 }
177 }
178
179 static void sun3fb_disp_setup(struct display *p)
180 {
181 struct fb_info_sbusfb *fb = sbusfbinfod(p);
182
183 if (fb->setup)
184 fb->setup(p);
185 sun3fb_clear_margin(p, 0);
186 }
187
188 /*
189 * Get the Fixed Part of the Display
190 */
191
192 static int sun3fb_get_fix(struct fb_fix_screeninfo *fix, int con,
193 struct fb_info *info)
194 {
195 struct fb_info_sbusfb *fb = sbusfbinfo(info);
196
197 memcpy(fix, &fb->fix, sizeof(struct fb_fix_screeninfo));
198 return 0;
199 }
200
201 /*
202 * Get the User Defined Part of the Display
203 */
204
205 static int sun3fb_get_var(struct fb_var_screeninfo *var, int con,
206 struct fb_info *info)
207 {
208 struct fb_info_sbusfb *fb = sbusfbinfo(info);
209
210 memcpy(var, &fb->var, sizeof(struct fb_var_screeninfo));
211 return 0;
212 }
213
214 /*
215 * Set the User Defined Part of the Display
216 */
217
218 static int sun3fb_set_var(struct fb_var_screeninfo *var, int con,
219 struct fb_info *info)
220 {
221 struct fb_info_sbusfb *fb = sbusfbinfo(info);
222
223 if (var->xres > fb->var.xres || var->yres > fb->var.yres ||
224 var->xres_virtual > fb->var.xres_virtual ||
225 var->yres_virtual > fb->var.yres_virtual ||
226 var->bits_per_pixel != fb->var.bits_per_pixel ||
227 var->nonstd ||
228 (var->vmode & FB_VMODE_MASK) != FB_VMODE_NONINTERLACED)
229 return -EINVAL;
230 memcpy(var, &fb->var, sizeof(struct fb_var_screeninfo));
231 return 0;
232 }
233
234 /*
235 * Hardware cursor
236 */
237
238 static unsigned char hw_cursor_cmap[2] = { 0, 0xff };
239
240 static void
241 sun3fb_cursor_timer_handler(unsigned long dev_addr)
242 {
243 struct fb_info_sbusfb *fb = (struct fb_info_sbusfb *)dev_addr;
244
245 if (!fb->setcursor) return;
246
247 if (fb->cursor.mode & CURSOR_BLINK) {
248 fb->cursor.enable ^= 1;
249 fb->setcursor(fb);
250 }
251
252 fb->cursor.timer.expires = jiffies + fb->cursor.blink_rate;
253 add_timer(&fb->cursor.timer);
254 }
255
256 static void sun3fb_cursor(struct display *p, int mode, int x, int y)
257 {
258 struct fb_info_sbusfb *fb = sbusfbinfod(p);
259
260 switch (mode) {
261 case CM_ERASE:
262 fb->cursor.mode &= ~CURSOR_BLINK;
263 fb->cursor.enable = 0;
264 (*fb->setcursor)(fb);
265 break;
266
267 case CM_MOVE:
268 case CM_DRAW:
269 if (fb->cursor.mode & CURSOR_SHAPE) {
270 fb->cursor.size.fbx = fontwidth(p);
271 fb->cursor.size.fby = fontheight(p);
272 fb->cursor.chot.fbx = 0;
273 fb->cursor.chot.fby = 0;
274 fb->cursor.enable = 1;
275 memset (fb->cursor.bits, 0, sizeof (fb->cursor.bits));
276 fb->cursor.bits[0][fontheight(p) - 2] = (0xffffffff << (32 - fontwidth(p)));
277 fb->cursor.bits[1][fontheight(p) - 2] = (0xffffffff << (32 - fontwidth(p)));
278 fb->cursor.bits[0][fontheight(p) - 1] = (0xffffffff << (32 - fontwidth(p)));
279 fb->cursor.bits[1][fontheight(p) - 1] = (0xffffffff << (32 - fontwidth(p)));
280 (*fb->setcursormap) (fb, hw_cursor_cmap, hw_cursor_cmap, hw_cursor_cmap);
281 (*fb->setcurshape) (fb);
282 }
283 fb->cursor.mode = CURSOR_BLINK;
284 if (fontwidthlog(p))
285 fb->cursor.cpos.fbx = (x << fontwidthlog(p)) + fb->x_margin;
286 else
287 fb->cursor.cpos.fbx = (x * fontwidth(p)) + fb->x_margin;
288 if (fontheightlog(p))
289 fb->cursor.cpos.fby = (y << fontheightlog(p)) + fb->y_margin;
290 else
291 fb->cursor.cpos.fby = (y * fontheight(p)) + fb->y_margin;
292 (*fb->setcursor)(fb);
293 break;
294 }
295 }
296
297 /*
298 * Get the Colormap
299 */
300
301 static int sun3fb_get_cmap(struct fb_cmap *cmap, int kspc, int con,
302 struct fb_info *info)
303 {
304 if (con == info->currcon) /* current console? */
305 return fb_get_cmap(cmap, kspc, sun3fb_getcolreg, info);
306 else if (fb_display[con].cmap.len) /* non default colormap? */
307 fb_copy_cmap(&fb_display[con].cmap, cmap, kspc ? 0 : 2);
308 else
309 fb_copy_cmap(fb_default_cmap(1<<fb_display[con].var.bits_per_pixel), cmap, kspc ? 0 : 2);
310 return 0;
311 }
312
313 /*
314 * Set the Colormap
315 */
316
317 static int sun3fb_set_cmap(struct fb_cmap *cmap, int kspc, int con,
318 struct fb_info *info)
319 {
320 int err;
321
322 if (!fb_display[con].cmap.len) { /* no colormap allocated? */
323 if ((err = fb_alloc_cmap(&fb_display[con].cmap, 1<<fb_display[con].var.bits_per_pixel, 0)))
324 return err;
325 }
326 if (con == info->currcon) { /* current console? */
327 err = fb_set_cmap(cmap, kspc, info);
328 if (!err) {
329 struct fb_info_sbusfb *fb = sbusfbinfo(info);
330
331 if (fb->loadcmap)
332 (*fb->loadcmap)(fb, &fb_display[con], cmap->start, cmap->len);
333 }
334 return err;
335 } else
336 fb_copy_cmap(cmap, &fb_display[con].cmap, kspc ? 0 : 1);
337 return 0;
338 }
339
340 /*
341 * Setup: parse used options
342 */
343
344 void __init sun3fb_setup(char *options)
345 {
346 char *p;
347
348 for (p = options;;) {
349 if (!strncmp(p, "font=", 5)) {
350 int i;
351
352 for (i = 0; i < sizeof(fontname) - 1; i++)
353 if (p[i+5] == ' ' || !p[i+5])
354 break;
355 memcpy(fontname, p+5, i);
356 fontname[i] = 0;
357 } else if (!strncmp(p, "noblink", 7))
358 curblink = 0;
359 while (*p && *p != ' ' && *p != ',') p++;
360 if (*p != ',') break;
361 p++;
362 }
363
364 return;
365 }
366
367 static int sun3fbcon_switch(int con, struct fb_info *info)
368 {
369 int x_margin, y_margin;
370 struct fb_info_sbusfb *fb = sbusfbinfo(info);
371 int lastconsole;
372
373 /* Do we have to save the colormap? */
374 if (fb_display[info->currcon].cmap.len)
375 fb_get_cmap(&fb_display[info->currcon].cmap, 1, sun3fb_getcolreg, info);
376
377 if (info->display_fg) {
378 lastconsole = info->display_fg->vc_num;
379 if (lastconsole != con &&
380 (fontwidth(&fb_display[lastconsole]) != fontwidth(&fb_display[con]) ||
381 fontheight(&fb_display[lastconsole]) != fontheight(&fb_display[con])))
382 fb->cursor.mode |= CURSOR_SHAPE;
383 }
384 x_margin = (fb_display[con].var.xres_virtual - fb_display[con].var.xres) / 2;
385 y_margin = (fb_display[con].var.yres_virtual - fb_display[con].var.yres) / 2;
386 if (fb->margins)
387 fb->margins(fb, &fb_display[con], x_margin, y_margin);
388 if (fb->graphmode || fb->x_margin != x_margin || fb->y_margin != y_margin) {
389 fb->x_margin = x_margin; fb->y_margin = y_margin;
390 sun3fb_clear_margin(&fb_display[con], 0);
391 }
392 info->currcon = con;
393 /* Install new colormap */
394 do_install_cmap(con, info);
395 return 0;
396 }
397
398 /*
399 * Update the `var' structure (called by fbcon.c)
400 */
401
402 static int sun3fbcon_updatevar(int con, struct fb_info *info)
403 {
404 /* Nothing */
405 return 0;
406 }
407
408 /*
409 * Blank the display.
410 */
411
412 static int sun3fb_blank(int blank, struct fb_info *info)
413 {
414 struct fb_info_sbusfb *fb = sbusfbinfo(info);
415
416 if (blank && fb->blank)
417 return fb->blank(fb);
418 else if (!blank && fb->unblank)
419 return fb->unblank(fb);
420 return 0;
421 }
422
423 /*
424 * Read a single color register and split it into
425 * colors/transparent. Return != 0 for invalid regno.
426 */
427
428 static int sun3fb_getcolreg(u_int regno, u_int *red, u_int *green, u_int *blue,
429 u_int *transp, struct fb_info *info)
430 {
431 struct fb_info_sbusfb *fb = sbusfbinfo(info);
432
433 if (!fb->color_map || regno > 255)
434 return 1;
435 *red = (fb->color_map CM(regno, 0)<<8) | fb->color_map CM(regno, 0);
436 *green = (fb->color_map CM(regno, 1)<<8) | fb->color_map CM(regno, 1);
437 *blue = (fb->color_map CM(regno, 2)<<8) | fb->color_map CM(regno, 2);
438 *transp = 0;
439 return 0;
440 }
441
442
443 /*
444 * Set a single color register. The values supplied are already
445 * rounded down to the hardware's capabilities (according to the
446 * entries in the var structure). Return != 0 for invalid regno.
447 */
448
449 static int sun3fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
450 u_int transp, struct fb_info *info)
451 {
452 struct fb_info_sbusfb *fb = sbusfbinfo(info);
453
454 if (!fb->color_map || regno > 255)
455 return 1;
456 red >>= 8;
457 green >>= 8;
458 blue >>= 8;
459 fb->color_map CM(regno, 0) = red;
460 fb->color_map CM(regno, 1) = green;
461 fb->color_map CM(regno, 2) = blue;
462 return 0;
463 }
464
465 static int sun3fb_set_font(struct display *p, int width, int height)
466 {
467 int w = p->var.xres_virtual, h = p->var.yres_virtual;
468 int depth = p->var.bits_per_pixel;
469 struct fb_info_sbusfb *fb = sbusfbinfod(p);
470 int x_margin, y_margin;
471
472 if (depth > 8) depth = 8;
473 x_margin = (w % width) / 2;
474 y_margin = (h % height) / 2;
475
476 p->var.xres = w - 2*x_margin;
477 p->var.yres = h - 2*y_margin;
478
479 fb->cursor.mode |= CURSOR_SHAPE;
480
481 if (fb->margins)
482 fb->margins(fb, p, x_margin, y_margin);
483 if (fb->x_margin != x_margin || fb->y_margin != y_margin) {
484 fb->x_margin = x_margin; fb->y_margin = y_margin;
485 sun3fb_clear_margin(p, 0);
486 }
487
488 return 1;
489 }
490
491 void sun3fb_palette(int enter)
492 {
493 int i;
494 struct display *p;
495
496 for (i = 0; i < MAX_NR_CONSOLES; i++) {
497 p = &fb_display[i];
498 if (p->dispsw && p->dispsw->setup == sun3fb_disp_setup &&
499 p->fb_info->display_fg &&
500 p->fb_info->display_fg->vc_num == i) {
501 struct fb_info_sbusfb *fb = sbusfbinfod(p);
502
503 if (fb->restore_palette) {
504 if (enter)
505 fb->restore_palette(fb);
506 else if (vc_cons[i].d->vc_mode != KD_GRAPHICS)
507 vc_cons[i].d->vc_sw->con_set_palette(vc_cons[i].d, color_table);
508 }
509 }
510 }
511 }
512
513 /*
514 * Initialisation
515 */
516 static int __init sun3fb_init_fb(int fbtype, unsigned long addr)
517 {
518 static struct sbus_dev sdb;
519 struct fb_fix_screeninfo *fix;
520 struct fb_var_screeninfo *var;
521 struct display *disp;
522 struct fb_info_sbusfb *fb;
523 struct fbtype *type;
524 int linebytes, w, h, depth;
525 char *p = NULL;
526
527 fb = kmalloc(sizeof(struct fb_info_sbusfb), GFP_ATOMIC);
528 if (!fb)
529 return -ENOMEM;
530
531 memset(fb, 0, sizeof(struct fb_info_sbusfb));
532 fix = &fb->fix;
533 var = &fb->var;
534 disp = &fb->disp;
535 type = &fb->type;
536
537 sdb.reg_addrs[0].phys_addr = addr;
538 fb->sbdp = &sdb;
539
540 type->fb_type = fbtype;
541
542 type->fb_height = h = 900;
543 type->fb_width = w = 1152;
544 sizechange:
545 type->fb_depth = depth = (fbtype == FBTYPE_SUN2BW) ? 1 : 8;
546 linebytes = w * depth / 8;
547 type->fb_size = PAGE_ALIGN((linebytes) * h);
548 /*
549 fb->x_margin = (w & 7) / 2;
550 fb->y_margin = (h & 15) / 2;
551 */
552 fb->x_margin = fb->y_margin = 0;
553
554 var->xres_virtual = w;
555 var->yres_virtual = h;
556 var->xres = w - 2*fb->x_margin;
557 var->yres = h - 2*fb->y_margin;
558
559 var->bits_per_pixel = depth;
560 var->height = var->width = -1;
561 var->pixclock = 10000;
562 var->vmode = FB_VMODE_NONINTERLACED;
563 var->red.length = var->green.length = var->blue.length = 8;
564
565 fix->line_length = linebytes;
566 fix->smem_len = type->fb_size;
567 fix->type = FB_TYPE_PACKED_PIXELS;
568 fix->visual = FB_VISUAL_PSEUDOCOLOR;
569
570 fb->info.fbops = &sun3fb_ops;
571 fb->info.disp = disp;
572 fb->info.currcon = -1;
573 strcpy(fb->info.fontname, fontname);
574 fb->info.changevar = NULL;
575 fb->info.switch_con = &sun3fbcon_switch;
576 fb->info.updatevar = &sun3fbcon_updatevar;
577 fb->info.flags = FBINFO_FLAG_DEFAULT;
578
579 fb->cursor.hwsize.fbx = 32;
580 fb->cursor.hwsize.fby = 32;
581
582 if (depth > 1 && !fb->color_map) {
583 if((fb->color_map = kmalloc(256 * 3, GFP_ATOMIC))==NULL)
584 return -ENOMEM;
585 }
586
587 switch(fbtype) {
588 #ifdef CONFIG_FB_CGSIX
589 case FBTYPE_SUNFAST_COLOR:
590 p = cgsixfb_init(fb); break;
591 #endif
592 #ifdef CONFIG_FB_BWTWO
593 case FBTYPE_SUN2BW:
594 p = bwtwofb_init(fb); break;
595 #endif
596 #ifdef CONFIG_FB_CGTHREE
597 case FBTYPE_SUN4COLOR:
598 case FBTYPE_SUN3COLOR:
599 type->fb_size = 0x100000;
600 p = cgthreefb_init(fb); break;
601 #endif
602 }
603 fix->smem_start = (unsigned long)fb->info.screen_base; // FIXME
604
605 if (!p) {
606 kfree(fb);
607 return -ENODEV;
608 }
609
610 if (p == SBUSFBINIT_SIZECHANGE)
611 goto sizechange;
612
613 disp->dispsw = &fb->dispsw;
614 if (fb->setcursor) {
615 fb->dispsw.cursor = sun3fb_cursor;
616 if (curblink) {
617 fb->cursor.blink_rate = DEFAULT_CURSOR_BLINK_RATE;
618 init_timer(&fb->cursor.timer);
619 fb->cursor.timer.expires = jiffies + fb->cursor.blink_rate;
620 fb->cursor.timer.data = (unsigned long)fb;
621 fb->cursor.timer.function = sun3fb_cursor_timer_handler;
622 add_timer(&fb->cursor.timer);
623 }
624 }
625 fb->cursor.mode = CURSOR_SHAPE;
626 fb->dispsw.set_font = sun3fb_set_font;
627 fb->setup = fb->dispsw.setup;
628 fb->dispsw.setup = sun3fb_disp_setup;
629 fb->dispsw.clear_margins = NULL;
630
631 disp->var = *var;
632 disp->visual = fix->visual;
633 disp->type = fix->type;
634 disp->type_aux = fix->type_aux;
635 disp->line_length = fix->line_length;
636
637 if (fb->blank)
638 disp->can_soft_blank = 1;
639
640 sun3fb_set_var(var, -1, &fb->info);
641
642 if (register_framebuffer(&fb->info) < 0) {
643 kfree(fb);
644 return -EINVAL;
645 }
646 printk("fb%d: %s\n", fb->info.node, p);
647
648 return 0;
649 }
650
651
652 int __init sun3fb_init(void)
653 {
654 extern int con_is_present(void);
655 unsigned long addr;
656 char p4id;
657
658 if (!con_is_present()) return -ENODEV;
659 #ifdef CONFIG_SUN3
660 switch(*(romvec->pv_fbtype))
661 {
662 case FBTYPE_SUN2BW:
663 addr = 0xfe20000;
664 return sun3fb_init_fb(FBTYPE_SUN2BW, addr);
665 case FBTYPE_SUN3COLOR:
666 case FBTYPE_SUN4COLOR:
667 if(idprom->id_machtype != (SM_SUN3|SM_3_60)) {
668 printk("sun3fb: cgthree/four only supported on 3/60\n");
669 return -ENODEV;
670 }
671
672 addr = CGFOUR_OBMEM_ADDR;
673 return sun3fb_init_fb(*(romvec->pv_fbtype), addr);
674 default:
675 printk("sun3fb: unsupported framebuffer\n");
676 return -ENODEV;
677 }
678 #else
679 addr = SUN3X_VIDEO_BASE;
680 p4id = *(char *)SUN3X_VIDEO_P4ID;
681
682 p4id = (p4id == 0x45) ? p4id : (p4id & 0xf0);
683 switch (p4id) {
684 case 0x00:
685 return sun3fb_init_fb(FBTYPE_SUN2BW, addr);
686 #if 0 /* not yet */
687 case 0x40:
688 return sun3fb_init_fb(FBTYPE_SUN4COLOR, addr);
689 break;
690 case 0x45:
691 return sun3fb_init_fb(FBTYPE_SUN8COLOR, addr);
692 break;
693 #endif
694 case 0x60:
695 return sun3fb_init_fb(FBTYPE_SUNFAST_COLOR, addr);
696 }
697 #endif
698
699 return -ENODEV;
700 }
701
702 MODULE_LICENSE("GPL");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree