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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * macfb.c: Generic framebuffer for Macs whose colourmaps/modes we
4 * don't know how to set.
5 *
6 * (c) 1999 David Huggins-Daines <[email protected]>
7 *
8 * Primarily based on vesafb.c, by Gerd Knorr
9 * (c) 1998 Gerd Knorr <[email protected]>
10 *
11 * Also uses information and code from:
12 *
13 * The original macfb.c from Linux/mac68k 2.0, by Alan Cox, Juergen
14 * Mellinger, Mikael Forselius, Michael Schmitz, and others.
15 *
16 * valkyriefb.c, by Martin Costabel, Kevin Schoedel, Barry Nathan, Dan
17 * Jacobowitz, Paul Mackerras, Fabio Riccardi, and Geert Uytterhoeven.
18 *
19 * The VideoToolbox "Bugs" web page at
20 * http://rajsky.psych.nyu.edu/Tips/VideoBugs.html
21 */
22
23#include <linux/module.h>
24#include <linux/kernel.h>
25#include <linux/errno.h>
26#include <linux/string.h>
27#include <linux/mm.h>
28#include <linux/delay.h>
29#include <linux/nubus.h>
30#include <linux/init.h>
31#include <linux/fb.h>
32
33#include <asm/setup.h>
34#include <asm/macintosh.h>
35#include <asm/io.h>
36
37/* Common DAC base address for the LC, RBV, Valkyrie, and IIvx */
38#define DAC_BASE 0x50f24000
39
40/* Some addresses for the DAFB */
41#define DAFB_BASE 0xf9800200
42
43/* Address for the built-in Civic framebuffer in Quadra AVs */
44#define CIVIC_BASE 0x50f30800
45
46/* GSC (Gray Scale Controller) base address */
47#define GSC_BASE 0x50F20000
48
49/* CSC (Color Screen Controller) base address */
50#define CSC_BASE 0x50F20000
51
52static int (*macfb_setpalette)(unsigned int regno, unsigned int red,
53 unsigned int green, unsigned int blue,
54 struct fb_info *info);
55
56static struct {
57 unsigned char addr;
58 unsigned char lut;
59} __iomem *v8_brazil_cmap_regs;
60
61static struct {
62 unsigned char addr;
63 char pad1[3]; /* word aligned */
64 unsigned char lut;
65 char pad2[3]; /* word aligned */
66 unsigned char cntl; /* a guess as to purpose */
67} __iomem *rbv_cmap_regs;
68
69static struct {
70 unsigned long reset;
71 unsigned long pad1[3];
72 unsigned char pad2[3];
73 unsigned char lut;
74} __iomem *dafb_cmap_regs;
75
76static struct {
77 unsigned char addr; /* OFFSET: 0x00 */
78 unsigned char pad1[15];
79 unsigned char lut; /* OFFSET: 0x10 */
80 unsigned char pad2[15];
81 unsigned char status; /* OFFSET: 0x20 */
82 unsigned char pad3[7];
83 unsigned long vbl_addr; /* OFFSET: 0x28 */
84 unsigned int status2; /* OFFSET: 0x2C */
85} __iomem *civic_cmap_regs;
86
87static struct {
88 char pad1[0x40];
89 unsigned char clut_waddr; /* 0x40 */
90 char pad2;
91 unsigned char clut_data; /* 0x42 */
92 char pad3[0x3];
93 unsigned char clut_raddr; /* 0x46 */
94} __iomem *csc_cmap_regs;
95
96/* The registers in these structs are in NuBus slot space */
97struct mdc_cmap_regs {
98 char pad1[0x200200];
99 unsigned char addr;
100 char pad2[6];
101 unsigned char lut;
102};
103
104struct toby_cmap_regs {
105 char pad1[0x90018];
106 unsigned char lut; /* TFBClutWDataReg, offset 0x90018 */
107 char pad2[3];
108 unsigned char addr; /* TFBClutAddrReg, offset 0x9001C */
109};
110
111struct jet_cmap_regs {
112 char pad1[0xe0e000];
113 unsigned char addr;
114 unsigned char lut;
115};
116
117#define PIXEL_TO_MM(a) (((a)*10)/28) /* width in mm at 72 dpi */
118
119static struct fb_var_screeninfo macfb_defined = {
120 .activate = FB_ACTIVATE_NOW,
121 .right_margin = 32,
122 .upper_margin = 16,
123 .lower_margin = 4,
124 .vsync_len = 4,
125 .vmode = FB_VMODE_NONINTERLACED,
126};
127
128static struct fb_fix_screeninfo macfb_fix = {
129 .type = FB_TYPE_PACKED_PIXELS,
130 .accel = FB_ACCEL_NONE,
131};
132
133static void *slot_addr;
134static struct fb_info fb_info;
135static u32 pseudo_palette[16];
136static int vidtest;
137
138/*
139 * Unlike the Valkyrie, the DAFB cannot set individual colormap
140 * registers. Therefore, we do what the MacOS driver does (no
141 * kidding!) and simply set them one by one until we hit the one we
142 * want.
143 */
144static int dafb_setpalette(unsigned int regno, unsigned int red,
145 unsigned int green, unsigned int blue,
146 struct fb_info *info)
147{
148 static int lastreg = -2;
149 unsigned long flags;
150
151 local_irq_save(flags);
152
153 /*
154 * fbdev will set an entire colourmap, but X won't. Hopefully
155 * this should accommodate both of them
156 */
157 if (regno != lastreg + 1) {
158 int i;
159
160 /* Stab in the dark trying to reset the CLUT pointer */
161 nubus_writel(0, &dafb_cmap_regs->reset);
162 nop();
163
164 /* Loop until we get to the register we want */
165 for (i = 0; i < regno; i++) {
166 nubus_writeb(info->cmap.red[i] >> 8,
167 &dafb_cmap_regs->lut);
168 nop();
169 nubus_writeb(info->cmap.green[i] >> 8,
170 &dafb_cmap_regs->lut);
171 nop();
172 nubus_writeb(info->cmap.blue[i] >> 8,
173 &dafb_cmap_regs->lut);
174 nop();
175 }
176 }
177
178 nubus_writeb(red, &dafb_cmap_regs->lut);
179 nop();
180 nubus_writeb(green, &dafb_cmap_regs->lut);
181 nop();
182 nubus_writeb(blue, &dafb_cmap_regs->lut);
183
184 local_irq_restore(flags);
185 lastreg = regno;
186 return 0;
187}
188
189/* V8 and Brazil seem to use the same DAC. Sonora does as well. */
190static int v8_brazil_setpalette(unsigned int regno, unsigned int red,
191 unsigned int green, unsigned int blue,
192 struct fb_info *info)
193{
194 unsigned int bpp = info->var.bits_per_pixel;
195 unsigned long flags;
196
197 local_irq_save(flags);
198
199 /* On these chips, the CLUT register numbers are spread out
200 * across the register space. Thus:
201 * In 8bpp, all regnos are valid.
202 * In 4bpp, the regnos are 0x0f, 0x1f, 0x2f, etc, etc
203 * In 2bpp, the regnos are 0x3f, 0x7f, 0xbf, 0xff
204 */
205 regno = (regno << (8 - bpp)) | (0xFF >> bpp);
206 nubus_writeb(regno, &v8_brazil_cmap_regs->addr);
207 nop();
208
209 /* send one color channel at a time */
210 nubus_writeb(red, &v8_brazil_cmap_regs->lut);
211 nop();
212 nubus_writeb(green, &v8_brazil_cmap_regs->lut);
213 nop();
214 nubus_writeb(blue, &v8_brazil_cmap_regs->lut);
215
216 local_irq_restore(flags);
217 return 0;
218}
219
220/* RAM-Based Video */
221static int rbv_setpalette(unsigned int regno, unsigned int red,
222 unsigned int green, unsigned int blue,
223 struct fb_info *info)
224{
225 unsigned long flags;
226
227 local_irq_save(flags);
228
229 /* From the VideoToolbox driver. Seems to be saying that
230 * regno #254 and #255 are the important ones for 1-bit color,
231 * regno #252-255 are the important ones for 2-bit color, etc.
232 */
233 regno += 256 - (1 << info->var.bits_per_pixel);
234
235 /* reset clut? (VideoToolbox sez "not necessary") */
236 nubus_writeb(0xFF, &rbv_cmap_regs->cntl);
237 nop();
238
239 /* tell clut which address to use. */
240 nubus_writeb(regno, &rbv_cmap_regs->addr);
241 nop();
242
243 /* send one color channel at a time. */
244 nubus_writeb(red, &rbv_cmap_regs->lut);
245 nop();
246 nubus_writeb(green, &rbv_cmap_regs->lut);
247 nop();
248 nubus_writeb(blue, &rbv_cmap_regs->lut);
249
250 local_irq_restore(flags);
251 return 0;
252}
253
254/* Macintosh Display Card (8*24) */
255static int mdc_setpalette(unsigned int regno, unsigned int red,
256 unsigned int green, unsigned int blue,
257 struct fb_info *info)
258{
259 struct mdc_cmap_regs *cmap_regs = slot_addr;
260 unsigned long flags;
261
262 local_irq_save(flags);
263
264 /* the nop's are there to order writes. */
265 nubus_writeb(regno, &cmap_regs->addr);
266 nop();
267 nubus_writeb(red, &cmap_regs->lut);
268 nop();
269 nubus_writeb(green, &cmap_regs->lut);
270 nop();
271 nubus_writeb(blue, &cmap_regs->lut);
272
273 local_irq_restore(flags);
274 return 0;
275}
276
277/* Toby frame buffer */
278static int toby_setpalette(unsigned int regno, unsigned int red,
279 unsigned int green, unsigned int blue,
280 struct fb_info *info)
281{
282 struct toby_cmap_regs *cmap_regs = slot_addr;
283 unsigned int bpp = info->var.bits_per_pixel;
284 unsigned long flags;
285
286 red = ~red;
287 green = ~green;
288 blue = ~blue;
289 regno = (regno << (8 - bpp)) | (0xFF >> bpp);
290
291 local_irq_save(flags);
292
293 nubus_writeb(regno, &cmap_regs->addr);
294 nop();
295 nubus_writeb(red, &cmap_regs->lut);
296 nop();
297 nubus_writeb(green, &cmap_regs->lut);
298 nop();
299 nubus_writeb(blue, &cmap_regs->lut);
300
301 local_irq_restore(flags);
302 return 0;
303}
304
305/* Jet frame buffer */
306static int jet_setpalette(unsigned int regno, unsigned int red,
307 unsigned int green, unsigned int blue,
308 struct fb_info *info)
309{
310 struct jet_cmap_regs *cmap_regs = slot_addr;
311 unsigned long flags;
312
313 local_irq_save(flags);
314
315 nubus_writeb(regno, &cmap_regs->addr);
316 nop();
317 nubus_writeb(red, &cmap_regs->lut);
318 nop();
319 nubus_writeb(green, &cmap_regs->lut);
320 nop();
321 nubus_writeb(blue, &cmap_regs->lut);
322
323 local_irq_restore(flags);
324 return 0;
325}
326
327/*
328 * Civic framebuffer -- Quadra AV built-in video. A chip
329 * called Sebastian holds the actual color palettes, and
330 * apparently, there are two different banks of 512K RAM
331 * which can act as separate framebuffers for doing video
332 * input and viewing the screen at the same time! The 840AV
333 * Can add another 1MB RAM to give the two framebuffers
334 * 1MB RAM apiece.
335 */
336static int civic_setpalette(unsigned int regno, unsigned int red,
337 unsigned int green, unsigned int blue,
338 struct fb_info *info)
339{
340 unsigned long flags;
341 int clut_status;
342
343 local_irq_save(flags);
344
345 /* Set the register address */
346 nubus_writeb(regno, &civic_cmap_regs->addr);
347 nop();
348
349 /*
350 * Grab a status word and do some checking;
351 * Then finally write the clut!
352 */
353 clut_status = nubus_readb(&civic_cmap_regs->status2);
354
355 if ((clut_status & 0x0008) == 0)
356 {
357#if 0
358 if ((clut_status & 0x000D) != 0)
359 {
360 nubus_writeb(0x00, &civic_cmap_regs->lut);
361 nop();
362 nubus_writeb(0x00, &civic_cmap_regs->lut);
363 nop();
364 }
365#endif
366
367 nubus_writeb(red, &civic_cmap_regs->lut);
368 nop();
369 nubus_writeb(green, &civic_cmap_regs->lut);
370 nop();
371 nubus_writeb(blue, &civic_cmap_regs->lut);
372 nop();
373 nubus_writeb(0x00, &civic_cmap_regs->lut);
374 }
375 else
376 {
377 unsigned char junk;
378
379 junk = nubus_readb(&civic_cmap_regs->lut);
380 nop();
381 junk = nubus_readb(&civic_cmap_regs->lut);
382 nop();
383 junk = nubus_readb(&civic_cmap_regs->lut);
384 nop();
385 junk = nubus_readb(&civic_cmap_regs->lut);
386 nop();
387
388 if ((clut_status & 0x000D) != 0)
389 {
390 nubus_writeb(0x00, &civic_cmap_regs->lut);
391 nop();
392 nubus_writeb(0x00, &civic_cmap_regs->lut);
393 nop();
394 }
395
396 nubus_writeb(red, &civic_cmap_regs->lut);
397 nop();
398 nubus_writeb(green, &civic_cmap_regs->lut);
399 nop();
400 nubus_writeb(blue, &civic_cmap_regs->lut);
401 nop();
402 nubus_writeb(junk, &civic_cmap_regs->lut);
403 }
404
405 local_irq_restore(flags);
406 return 0;
407}
408
409/*
410 * The CSC is the framebuffer on the PowerBook 190 series
411 * (and the 5300 too, but that's a PowerMac). This function
412 * brought to you in part by the ECSC driver for MkLinux.
413 */
414static int csc_setpalette(unsigned int regno, unsigned int red,
415 unsigned int green, unsigned int blue,
416 struct fb_info *info)
417{
418 unsigned long flags;
419
420 local_irq_save(flags);
421
422 udelay(1); /* mklinux on PB 5300 waits for 260 ns */
423 nubus_writeb(regno, &csc_cmap_regs->clut_waddr);
424 nubus_writeb(red, &csc_cmap_regs->clut_data);
425 nubus_writeb(green, &csc_cmap_regs->clut_data);
426 nubus_writeb(blue, &csc_cmap_regs->clut_data);
427
428 local_irq_restore(flags);
429 return 0;
430}
431
432static int macfb_setcolreg(unsigned regno, unsigned red, unsigned green,
433 unsigned blue, unsigned transp,
434 struct fb_info *fb_info)
435{
436 /*
437 * Set a single color register. The values supplied are
438 * already rounded down to the hardware's capabilities
439 * (according to the entries in the `var' structure).
440 * Return non-zero for invalid regno.
441 */
442
443 if (regno >= fb_info->cmap.len)
444 return 1;
445
446 if (fb_info->var.bits_per_pixel <= 8) {
447 switch (fb_info->var.bits_per_pixel) {
448 case 1:
449 /* We shouldn't get here */
450 break;
451 case 2:
452 case 4:
453 case 8:
454 if (macfb_setpalette)
455 macfb_setpalette(regno, red >> 8, green >> 8,
456 blue >> 8, fb_info);
457 else
458 return 1;
459 break;
460 }
461 } else if (regno < 16) {
462 switch (fb_info->var.bits_per_pixel) {
463 case 16:
464 if (fb_info->var.red.offset == 10) {
465 /* 1:5:5:5 */
466 ((u32*) (fb_info->pseudo_palette))[regno] =
467 ((red & 0xf800) >> 1) |
468 ((green & 0xf800) >> 6) |
469 ((blue & 0xf800) >> 11) |
470 ((transp != 0) << 15);
471 } else {
472 /* 0:5:6:5 */
473 ((u32*) (fb_info->pseudo_palette))[regno] =
474 ((red & 0xf800) >> 0) |
475 ((green & 0xfc00) >> 5) |
476 ((blue & 0xf800) >> 11);
477 }
478 break;
479 /*
480 * 24-bit colour almost doesn't exist on 68k Macs --
481 * https://support.apple.com/kb/TA28634 (Old Article: 10992)
482 */
483 case 24:
484 case 32:
485 red >>= 8;
486 green >>= 8;
487 blue >>= 8;
488 ((u32 *)(fb_info->pseudo_palette))[regno] =
489 (red << fb_info->var.red.offset) |
490 (green << fb_info->var.green.offset) |
491 (blue << fb_info->var.blue.offset);
492 break;
493 }
494 }
495
496 return 0;
497}
498
499static const struct fb_ops macfb_ops = {
500 .owner = THIS_MODULE,
501 FB_DEFAULT_IOMEM_OPS,
502 .fb_setcolreg = macfb_setcolreg,
503};
504
505static void __init macfb_setup(char *options)
506{
507 char *this_opt;
508
509 if (!options || !*options)
510 return;
511
512 while ((this_opt = strsep(&options, ",")) != NULL) {
513 if (!*this_opt)
514 continue;
515
516 if (!strcmp(this_opt, "inverse"))
517 fb_invert_cmaps();
518 else
519 if (!strcmp(this_opt, "vidtest"))
520 vidtest = 1; /* enable experimental CLUT code */
521 }
522}
523
524static void __init iounmap_macfb(void)
525{
526 if (dafb_cmap_regs)
527 iounmap(dafb_cmap_regs);
528 if (v8_brazil_cmap_regs)
529 iounmap(v8_brazil_cmap_regs);
530 if (rbv_cmap_regs)
531 iounmap(rbv_cmap_regs);
532 if (civic_cmap_regs)
533 iounmap(civic_cmap_regs);
534 if (csc_cmap_regs)
535 iounmap(csc_cmap_regs);
536}
537
538static int __init macfb_init(void)
539{
540 int video_cmap_len, video_is_nubus = 0;
541 struct nubus_rsrc *ndev = NULL;
542 char *option = NULL;
543 int err;
544
545 if (fb_get_options("macfb", &option))
546 return -ENODEV;
547 macfb_setup(option);
548
549 if (!MACH_IS_MAC)
550 return -ENODEV;
551
552 if (mac_bi_data.id == MAC_MODEL_Q630 ||
553 mac_bi_data.id == MAC_MODEL_P588)
554 return -ENODEV; /* See valkyriefb.c */
555
556 macfb_defined.xres = mac_bi_data.dimensions & 0xFFFF;
557 macfb_defined.yres = mac_bi_data.dimensions >> 16;
558 macfb_defined.bits_per_pixel = mac_bi_data.videodepth;
559
560 macfb_fix.line_length = mac_bi_data.videorow;
561 macfb_fix.smem_len = macfb_fix.line_length * macfb_defined.yres;
562 /* Note: physical address (since 2.1.127) */
563 macfb_fix.smem_start = mac_bi_data.videoaddr;
564
565 /*
566 * This is actually redundant with the initial mappings.
567 * However, there are some non-obvious aspects to the way
568 * those mappings are set up, so this is in fact the safest
569 * way to ensure that this driver will work on every possible Mac
570 */
571 fb_info.screen_base = ioremap(mac_bi_data.videoaddr,
572 macfb_fix.smem_len);
573 if (!fb_info.screen_base)
574 return -ENODEV;
575
576 pr_info("macfb: framebuffer at 0x%08lx, mapped to 0x%p, size %dk\n",
577 macfb_fix.smem_start, fb_info.screen_base,
578 macfb_fix.smem_len / 1024);
579 pr_info("macfb: mode is %dx%dx%d, linelength=%d\n",
580 macfb_defined.xres, macfb_defined.yres,
581 macfb_defined.bits_per_pixel, macfb_fix.line_length);
582
583 /* Fill in the available video resolution */
584 macfb_defined.xres_virtual = macfb_defined.xres;
585 macfb_defined.yres_virtual = macfb_defined.yres;
586 macfb_defined.height = PIXEL_TO_MM(macfb_defined.yres);
587 macfb_defined.width = PIXEL_TO_MM(macfb_defined.xres);
588
589 /* Some dummy values for timing to make fbset happy */
590 macfb_defined.pixclock = 10000000 / macfb_defined.xres *
591 1000 / macfb_defined.yres;
592 macfb_defined.left_margin = (macfb_defined.xres / 8) & 0xf8;
593 macfb_defined.hsync_len = (macfb_defined.xres / 8) & 0xf8;
594
595 switch (macfb_defined.bits_per_pixel) {
596 case 1:
597 macfb_defined.red.length = macfb_defined.bits_per_pixel;
598 macfb_defined.green.length = macfb_defined.bits_per_pixel;
599 macfb_defined.blue.length = macfb_defined.bits_per_pixel;
600 video_cmap_len = 2;
601 macfb_fix.visual = FB_VISUAL_MONO01;
602 break;
603 case 2:
604 case 4:
605 case 8:
606 macfb_defined.red.length = macfb_defined.bits_per_pixel;
607 macfb_defined.green.length = macfb_defined.bits_per_pixel;
608 macfb_defined.blue.length = macfb_defined.bits_per_pixel;
609 video_cmap_len = 1 << macfb_defined.bits_per_pixel;
610 macfb_fix.visual = FB_VISUAL_PSEUDOCOLOR;
611 break;
612 case 16:
613 macfb_defined.transp.offset = 15;
614 macfb_defined.transp.length = 1;
615 macfb_defined.red.offset = 10;
616 macfb_defined.red.length = 5;
617 macfb_defined.green.offset = 5;
618 macfb_defined.green.length = 5;
619 macfb_defined.blue.offset = 0;
620 macfb_defined.blue.length = 5;
621 video_cmap_len = 16;
622 /*
623 * Should actually be FB_VISUAL_DIRECTCOLOR, but this
624 * works too
625 */
626 macfb_fix.visual = FB_VISUAL_TRUECOLOR;
627 break;
628 case 24:
629 case 32:
630 macfb_defined.red.offset = 16;
631 macfb_defined.red.length = 8;
632 macfb_defined.green.offset = 8;
633 macfb_defined.green.length = 8;
634 macfb_defined.blue.offset = 0;
635 macfb_defined.blue.length = 8;
636 video_cmap_len = 16;
637 macfb_fix.visual = FB_VISUAL_TRUECOLOR;
638 break;
639 default:
640 pr_err("macfb: unknown or unsupported bit depth: %d\n",
641 macfb_defined.bits_per_pixel);
642 err = -EINVAL;
643 goto fail_unmap;
644 }
645
646 /*
647 * We take a wild guess that if the video physical address is
648 * in nubus slot space, that the nubus card is driving video.
649 * Penguin really ought to tell us whether we are using internal
650 * video or not.
651 * Hopefully we only find one of them. Otherwise our NuBus
652 * code is really broken :-)
653 */
654
655 for_each_func_rsrc(ndev) {
656 unsigned long base = ndev->board->slot_addr;
657
658 if (mac_bi_data.videoaddr < base ||
659 mac_bi_data.videoaddr - base > 0xFFFFFF)
660 continue;
661
662 if (ndev->category != NUBUS_CAT_DISPLAY ||
663 ndev->type != NUBUS_TYPE_VIDEO)
664 continue;
665
666 video_is_nubus = 1;
667 slot_addr = (unsigned char *)base;
668
669 switch(ndev->dr_hw) {
670 case NUBUS_DRHW_APPLE_MDC:
671 strscpy(macfb_fix.id, "Mac Disp. Card");
672 macfb_setpalette = mdc_setpalette;
673 break;
674 case NUBUS_DRHW_APPLE_TFB:
675 strscpy(macfb_fix.id, "Toby");
676 macfb_setpalette = toby_setpalette;
677 break;
678 case NUBUS_DRHW_APPLE_JET:
679 strscpy(macfb_fix.id, "Jet");
680 macfb_setpalette = jet_setpalette;
681 break;
682 default:
683 strscpy(macfb_fix.id, "Generic NuBus");
684 break;
685 }
686 }
687
688 /* If it's not a NuBus card, it must be internal video */
689 if (!video_is_nubus)
690 switch (mac_bi_data.id) {
691 /*
692 * DAFB Quadras
693 * Note: these first four have the v7 DAFB, which is
694 * known to be rather unlike the ones used in the
695 * other models
696 */
697 case MAC_MODEL_P475:
698 case MAC_MODEL_P475F:
699 case MAC_MODEL_P575:
700 case MAC_MODEL_Q605:
701
702 case MAC_MODEL_Q800:
703 case MAC_MODEL_Q650:
704 case MAC_MODEL_Q610:
705 case MAC_MODEL_C650:
706 case MAC_MODEL_C610:
707 case MAC_MODEL_Q700:
708 case MAC_MODEL_Q900:
709 case MAC_MODEL_Q950:
710 strscpy(macfb_fix.id, "DAFB");
711 macfb_setpalette = dafb_setpalette;
712 dafb_cmap_regs = ioremap(DAFB_BASE, 0x1000);
713 break;
714
715 /*
716 * LC II uses the V8 framebuffer
717 */
718 case MAC_MODEL_LCII:
719 strscpy(macfb_fix.id, "V8");
720 macfb_setpalette = v8_brazil_setpalette;
721 v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000);
722 break;
723
724 /*
725 * IIvi, IIvx use the "Brazil" framebuffer (which is
726 * very much like the V8, it seems, and probably uses
727 * the same DAC)
728 */
729 case MAC_MODEL_IIVI:
730 case MAC_MODEL_IIVX:
731 case MAC_MODEL_P600:
732 strscpy(macfb_fix.id, "Brazil");
733 macfb_setpalette = v8_brazil_setpalette;
734 v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000);
735 break;
736
737 /*
738 * LC III (and friends) use the Sonora framebuffer
739 * Incidentally this is also used in the non-AV models
740 * of the x100 PowerMacs
741 * These do in fact seem to use the same DAC interface
742 * as the LC II.
743 */
744 case MAC_MODEL_LCIII:
745 case MAC_MODEL_P520:
746 case MAC_MODEL_P550:
747 case MAC_MODEL_P460:
748 strscpy(macfb_fix.id, "Sonora");
749 macfb_setpalette = v8_brazil_setpalette;
750 v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000);
751 break;
752
753 /*
754 * IIci and IIsi use the infamous RBV chip
755 * (the IIsi is just a rebadged and crippled
756 * IIci in a different case, BTW)
757 */
758 case MAC_MODEL_IICI:
759 case MAC_MODEL_IISI:
760 strscpy(macfb_fix.id, "RBV");
761 macfb_setpalette = rbv_setpalette;
762 rbv_cmap_regs = ioremap(DAC_BASE, 0x1000);
763 break;
764
765 /*
766 * AVs use the Civic framebuffer
767 */
768 case MAC_MODEL_Q840:
769 case MAC_MODEL_C660:
770 strscpy(macfb_fix.id, "Civic");
771 macfb_setpalette = civic_setpalette;
772 civic_cmap_regs = ioremap(CIVIC_BASE, 0x1000);
773 break;
774
775
776 /*
777 * Assorted weirdos
778 * We think this may be like the LC II
779 */
780 case MAC_MODEL_LC:
781 strscpy(macfb_fix.id, "LC");
782 if (vidtest) {
783 macfb_setpalette = v8_brazil_setpalette;
784 v8_brazil_cmap_regs =
785 ioremap(DAC_BASE, 0x1000);
786 }
787 break;
788
789 /*
790 * We think this may be like the LC II
791 */
792 case MAC_MODEL_CCL:
793 strscpy(macfb_fix.id, "Color Classic");
794 if (vidtest) {
795 macfb_setpalette = v8_brazil_setpalette;
796 v8_brazil_cmap_regs =
797 ioremap(DAC_BASE, 0x1000);
798 }
799 break;
800
801 /*
802 * And we *do* mean "weirdos"
803 */
804 case MAC_MODEL_TV:
805 strscpy(macfb_fix.id, "Mac TV");
806 break;
807
808 /*
809 * These don't have colour, so no need to worry
810 */
811 case MAC_MODEL_SE30:
812 case MAC_MODEL_CLII:
813 strscpy(macfb_fix.id, "Monochrome");
814 break;
815
816 /*
817 * Powerbooks are particularly difficult. Many of
818 * them have separate framebuffers for external and
819 * internal video, which is admittedly pretty cool,
820 * but will be a bit of a headache to support here.
821 * Also, many of them are grayscale, and we don't
822 * really support that.
823 */
824
825 /*
826 * Slot 0 ROM says TIM. No external video. B&W.
827 */
828 case MAC_MODEL_PB140:
829 case MAC_MODEL_PB145:
830 case MAC_MODEL_PB170:
831 strscpy(macfb_fix.id, "DDC");
832 break;
833
834 /*
835 * Internal is GSC, External (if present) is ViSC
836 */
837 case MAC_MODEL_PB150: /* no external video */
838 case MAC_MODEL_PB160:
839 case MAC_MODEL_PB165:
840 case MAC_MODEL_PB180:
841 case MAC_MODEL_PB210:
842 case MAC_MODEL_PB230:
843 strscpy(macfb_fix.id, "GSC");
844 break;
845
846 /*
847 * Internal is TIM, External is ViSC
848 */
849 case MAC_MODEL_PB165C:
850 case MAC_MODEL_PB180C:
851 strscpy(macfb_fix.id, "TIM");
852 break;
853
854 /*
855 * Internal is CSC, External is Keystone+Ariel.
856 */
857 case MAC_MODEL_PB190: /* external video is optional */
858 case MAC_MODEL_PB520:
859 case MAC_MODEL_PB250:
860 case MAC_MODEL_PB270C:
861 case MAC_MODEL_PB280:
862 case MAC_MODEL_PB280C:
863 strscpy(macfb_fix.id, "CSC");
864 macfb_setpalette = csc_setpalette;
865 csc_cmap_regs = ioremap(CSC_BASE, 0x1000);
866 break;
867
868 default:
869 strscpy(macfb_fix.id, "Unknown");
870 break;
871 }
872
873 fb_info.fbops = &macfb_ops;
874 fb_info.var = macfb_defined;
875 fb_info.fix = macfb_fix;
876 fb_info.pseudo_palette = pseudo_palette;
877
878 err = fb_alloc_cmap(&fb_info.cmap, video_cmap_len, 0);
879 if (err)
880 goto fail_unmap;
881
882 err = register_framebuffer(&fb_info);
883 if (err)
884 goto fail_dealloc;
885
886 fb_info(&fb_info, "%s frame buffer device\n", fb_info.fix.id);
887
888 return 0;
889
890fail_dealloc:
891 fb_dealloc_cmap(&fb_info.cmap);
892fail_unmap:
893 iounmap(fb_info.screen_base);
894 iounmap_macfb();
895 return err;
896}
897
898module_init(macfb_init);
899MODULE_LICENSE("GPL");