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 <dhd@debian.org> |
7 | * |
8 | * Primarily based on vesafb.c, by Gerd Knorr |
9 | * (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de> |
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 | |
52 | static int (*macfb_setpalette)(unsigned int regno, unsigned int red, |
53 | unsigned int green, unsigned int blue, |
54 | struct fb_info *info); |
55 | |
56 | static struct { |
57 | unsigned char addr; |
58 | unsigned char lut; |
59 | } __iomem *v8_brazil_cmap_regs; |
60 | |
61 | static 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 | |
69 | static 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 | |
76 | static 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 | |
87 | static 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 */ |
97 | struct mdc_cmap_regs { |
98 | char pad1[0x200200]; |
99 | unsigned char addr; |
100 | char pad2[6]; |
101 | unsigned char lut; |
102 | }; |
103 | |
104 | struct 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 | |
111 | struct 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 | |
119 | static 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 | |
128 | static struct fb_fix_screeninfo macfb_fix = { |
129 | .type = FB_TYPE_PACKED_PIXELS, |
130 | .accel = FB_ACCEL_NONE, |
131 | }; |
132 | |
133 | static void *slot_addr; |
134 | static struct fb_info fb_info; |
135 | static u32 pseudo_palette[16]; |
136 | static 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 | */ |
144 | static 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. */ |
190 | static 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 */ |
221 | static 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) */ |
255 | static 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 */ |
278 | static 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 */ |
306 | static 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 | */ |
336 | static 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 | */ |
414 | static 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 | |
432 | static 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 | |
499 | static const struct fb_ops macfb_ops = { |
500 | .owner = THIS_MODULE, |
501 | FB_DEFAULT_IOMEM_OPS, |
502 | .fb_setcolreg = macfb_setcolreg, |
503 | }; |
504 | |
505 | static 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 | |
524 | static void __init iounmap_macfb(void) |
525 | { |
526 | if (dafb_cmap_regs) |
527 | iounmap(addr: dafb_cmap_regs); |
528 | if (v8_brazil_cmap_regs) |
529 | iounmap(addr: v8_brazil_cmap_regs); |
530 | if (rbv_cmap_regs) |
531 | iounmap(addr: rbv_cmap_regs); |
532 | if (civic_cmap_regs) |
533 | iounmap(addr: civic_cmap_regs); |
534 | if (csc_cmap_regs) |
535 | iounmap(addr: csc_cmap_regs); |
536 | } |
537 | |
538 | static 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(name: "macfb" , option: &option)) |
546 | return -ENODEV; |
547 | macfb_setup(options: 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(offset: mac_bi_data.videoaddr, |
572 | size: 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 | strcpy(p: macfb_fix.id, q: "Mac Disp. Card" ); |
672 | macfb_setpalette = mdc_setpalette; |
673 | break; |
674 | case NUBUS_DRHW_APPLE_TFB: |
675 | strcpy(p: macfb_fix.id, q: "Toby" ); |
676 | macfb_setpalette = toby_setpalette; |
677 | break; |
678 | case NUBUS_DRHW_APPLE_JET: |
679 | strcpy(p: macfb_fix.id, q: "Jet" ); |
680 | macfb_setpalette = jet_setpalette; |
681 | break; |
682 | default: |
683 | strcpy(p: macfb_fix.id, q: "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 | strcpy(p: macfb_fix.id, q: "DAFB" ); |
711 | macfb_setpalette = dafb_setpalette; |
712 | dafb_cmap_regs = ioremap(DAFB_BASE, size: 0x1000); |
713 | break; |
714 | |
715 | /* |
716 | * LC II uses the V8 framebuffer |
717 | */ |
718 | case MAC_MODEL_LCII: |
719 | strcpy(p: macfb_fix.id, q: "V8" ); |
720 | macfb_setpalette = v8_brazil_setpalette; |
721 | v8_brazil_cmap_regs = ioremap(DAC_BASE, size: 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 | strcpy(p: macfb_fix.id, q: "Brazil" ); |
733 | macfb_setpalette = v8_brazil_setpalette; |
734 | v8_brazil_cmap_regs = ioremap(DAC_BASE, size: 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 | strcpy(p: macfb_fix.id, q: "Sonora" ); |
749 | macfb_setpalette = v8_brazil_setpalette; |
750 | v8_brazil_cmap_regs = ioremap(DAC_BASE, size: 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 | strcpy(p: macfb_fix.id, q: "RBV" ); |
761 | macfb_setpalette = rbv_setpalette; |
762 | rbv_cmap_regs = ioremap(DAC_BASE, size: 0x1000); |
763 | break; |
764 | |
765 | /* |
766 | * AVs use the Civic framebuffer |
767 | */ |
768 | case MAC_MODEL_Q840: |
769 | case MAC_MODEL_C660: |
770 | strcpy(p: macfb_fix.id, q: "Civic" ); |
771 | macfb_setpalette = civic_setpalette; |
772 | civic_cmap_regs = ioremap(CIVIC_BASE, size: 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 | strcpy(p: macfb_fix.id, q: "LC" ); |
782 | if (vidtest) { |
783 | macfb_setpalette = v8_brazil_setpalette; |
784 | v8_brazil_cmap_regs = |
785 | ioremap(DAC_BASE, size: 0x1000); |
786 | } |
787 | break; |
788 | |
789 | /* |
790 | * We think this may be like the LC II |
791 | */ |
792 | case MAC_MODEL_CCL: |
793 | strcpy(p: macfb_fix.id, q: "Color Classic" ); |
794 | if (vidtest) { |
795 | macfb_setpalette = v8_brazil_setpalette; |
796 | v8_brazil_cmap_regs = |
797 | ioremap(DAC_BASE, size: 0x1000); |
798 | } |
799 | break; |
800 | |
801 | /* |
802 | * And we *do* mean "weirdos" |
803 | */ |
804 | case MAC_MODEL_TV: |
805 | strcpy(p: macfb_fix.id, q: "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 | strcpy(p: macfb_fix.id, q: "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 | strcpy(p: macfb_fix.id, q: "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 | strcpy(p: macfb_fix.id, q: "GSC" ); |
844 | break; |
845 | |
846 | /* |
847 | * Internal is TIM, External is ViSC |
848 | */ |
849 | case MAC_MODEL_PB165C: |
850 | case MAC_MODEL_PB180C: |
851 | strcpy(p: macfb_fix.id, q: "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 | strcpy(p: macfb_fix.id, q: "CSC" ); |
864 | macfb_setpalette = csc_setpalette; |
865 | csc_cmap_regs = ioremap(CSC_BASE, size: 0x1000); |
866 | break; |
867 | |
868 | default: |
869 | strcpy(p: macfb_fix.id, q: "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(cmap: &fb_info.cmap, len: video_cmap_len, transp: 0); |
879 | if (err) |
880 | goto fail_unmap; |
881 | |
882 | err = register_framebuffer(fb_info: &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 | |
890 | fail_dealloc: |
891 | fb_dealloc_cmap(cmap: &fb_info.cmap); |
892 | fail_unmap: |
893 | iounmap(addr: fb_info.screen_base); |
894 | iounmap_macfb(); |
895 | return err; |
896 | } |
897 | |
898 | module_init(macfb_init); |
899 | MODULE_LICENSE("GPL" ); |
900 | |