Commit | Line | Data |
---|---|---|
34c41d0a FT |
1 | /* |
2 | * macfb.c: Generic framebuffer for Macs whose colourmaps/modes we | |
3 | * don't know how to set. | |
4 | * | |
5 | * (c) 1999 David Huggins-Daines <dhd@debian.org> | |
6 | * | |
7 | * Primarily based on vesafb.c, by Gerd Knorr | |
8 | * (c) 1998 Gerd Knorr <kraxel@cs.tu-berlin.de> | |
9 | * | |
10 | * Also uses information and code from: | |
11 | * | |
12 | * The original macfb.c from Linux/mac68k 2.0, by Alan Cox, Juergen | |
13 | * Mellinger, Mikael Forselius, Michael Schmitz, and others. | |
14 | * | |
15 | * valkyriefb.c, by Martin Costabel, Kevin Schoedel, Barry Nathan, Dan | |
16 | * Jacobowitz, Paul Mackerras, Fabio Riccardi, and Geert Uytterhoeven. | |
17 | * | |
18 | * The VideoToolbox "Bugs" web page at | |
19 | * http://rajsky.psych.nyu.edu/Tips/VideoBugs.html | |
20 | * | |
21 | * This code is free software. You may copy, modify, and distribute | |
22 | * it subject to the terms and conditions of the GNU General Public | |
23 | * License, version 2, or any later version, at your convenience. | |
24 | */ | |
1da177e4 LT |
25 | |
26 | #include <linux/module.h> | |
27 | #include <linux/kernel.h> | |
1da177e4 LT |
28 | #include <linux/errno.h> |
29 | #include <linux/string.h> | |
30 | #include <linux/mm.h> | |
1da177e4 LT |
31 | #include <linux/delay.h> |
32 | #include <linux/nubus.h> | |
33 | #include <linux/init.h> | |
34 | #include <linux/fb.h> | |
35 | ||
36 | #include <asm/setup.h> | |
37 | #include <asm/bootinfo.h> | |
1da177e4 LT |
38 | #include <asm/macintosh.h> |
39 | #include <asm/io.h> | |
1da177e4 LT |
40 | |
41 | /* Common DAC base address for the LC, RBV, Valkyrie, and IIvx */ | |
42 | #define DAC_BASE 0x50f24000 | |
43 | ||
44 | /* Some addresses for the DAFB */ | |
45 | #define DAFB_BASE 0xf9800200 | |
46 | ||
47 | /* Address for the built-in Civic framebuffer in Quadra AVs */ | |
34c41d0a | 48 | #define CIVIC_BASE 0x50f30800 |
1da177e4 LT |
49 | |
50 | /* GSC (Gray Scale Controller) base address */ | |
51 | #define GSC_BASE 0x50F20000 | |
52 | ||
53 | /* CSC (Color Screen Controller) base address */ | |
54 | #define CSC_BASE 0x50F20000 | |
55 | ||
34c41d0a FT |
56 | static int (*macfb_setpalette)(unsigned int regno, unsigned int red, |
57 | unsigned int green, unsigned int blue, | |
58 | struct fb_info *info); | |
1da177e4 | 59 | |
3839d01d | 60 | static struct { |
1da177e4 LT |
61 | unsigned char addr; |
62 | unsigned char lut; | |
3839d01d | 63 | } __iomem *v8_brazil_cmap_regs; |
1da177e4 | 64 | |
3839d01d | 65 | static struct { |
1da177e4 LT |
66 | unsigned char addr; |
67 | char pad1[3]; /* word aligned */ | |
68 | unsigned char lut; | |
69 | char pad2[3]; /* word aligned */ | |
70 | unsigned char cntl; /* a guess as to purpose */ | |
3839d01d | 71 | } __iomem *rbv_cmap_regs; |
1da177e4 | 72 | |
3839d01d | 73 | static struct { |
1da177e4 LT |
74 | unsigned long reset; |
75 | unsigned long pad1[3]; | |
76 | unsigned char pad2[3]; | |
77 | unsigned char lut; | |
3839d01d | 78 | } __iomem *dafb_cmap_regs; |
1da177e4 | 79 | |
3839d01d | 80 | static struct { |
1da177e4 LT |
81 | unsigned char addr; /* OFFSET: 0x00 */ |
82 | unsigned char pad1[15]; | |
83 | unsigned char lut; /* OFFSET: 0x10 */ | |
84 | unsigned char pad2[15]; | |
85 | unsigned char status; /* OFFSET: 0x20 */ | |
86 | unsigned char pad3[7]; | |
87 | unsigned long vbl_addr; /* OFFSET: 0x28 */ | |
88 | unsigned int status2; /* OFFSET: 0x2C */ | |
3839d01d | 89 | } __iomem *civic_cmap_regs; |
1da177e4 | 90 | |
3839d01d | 91 | static struct { |
34c41d0a FT |
92 | char pad1[0x40]; |
93 | unsigned char clut_waddr; /* 0x40 */ | |
94 | char pad2; | |
95 | unsigned char clut_data; /* 0x42 */ | |
96 | char pad3[0x3]; | |
97 | unsigned char clut_raddr; /* 0x46 */ | |
3839d01d | 98 | } __iomem *csc_cmap_regs; |
1da177e4 | 99 | |
34c41d0a | 100 | /* The registers in these structs are in NuBus slot space */ |
1da177e4 LT |
101 | struct mdc_cmap_regs { |
102 | char pad1[0x200200]; | |
103 | unsigned char addr; | |
104 | char pad2[6]; | |
105 | unsigned char lut; | |
106 | }; | |
107 | ||
108 | struct toby_cmap_regs { | |
109 | char pad1[0x90018]; | |
110 | unsigned char lut; /* TFBClutWDataReg, offset 0x90018 */ | |
111 | char pad2[3]; | |
112 | unsigned char addr; /* TFBClutAddrReg, offset 0x9001C */ | |
113 | }; | |
114 | ||
115 | struct jet_cmap_regs { | |
116 | char pad1[0xe0e000]; | |
117 | unsigned char addr; | |
118 | unsigned char lut; | |
119 | }; | |
120 | ||
34c41d0a | 121 | #define PIXEL_TO_MM(a) (((a)*10)/28) /* width in mm at 72 dpi */ |
1da177e4 | 122 | |
1da177e4 | 123 | static struct fb_var_screeninfo macfb_defined = { |
34c41d0a | 124 | .bits_per_pixel = 8, |
1da177e4 LT |
125 | .activate = FB_ACTIVATE_NOW, |
126 | .width = -1, | |
127 | .height = -1, | |
128 | .right_margin = 32, | |
129 | .upper_margin = 16, | |
130 | .lower_margin = 4, | |
131 | .vsync_len = 4, | |
132 | .vmode = FB_VMODE_NONINTERLACED, | |
133 | }; | |
134 | ||
135 | static struct fb_fix_screeninfo macfb_fix = { | |
1da177e4 LT |
136 | .type = FB_TYPE_PACKED_PIXELS, |
137 | .accel = FB_ACCEL_NONE, | |
138 | }; | |
139 | ||
99e11ab2 | 140 | static void *slot_addr; |
1da177e4 | 141 | static struct fb_info fb_info; |
24fc7223 | 142 | static u32 pseudo_palette[16]; |
34c41d0a FT |
143 | static int inverse; |
144 | static int vidtest; | |
145 | ||
146 | /* | |
147 | * Unlike the Valkyrie, the DAFB cannot set individual colormap | |
148 | * registers. Therefore, we do what the MacOS driver does (no | |
149 | * kidding!) and simply set them one by one until we hit the one we | |
150 | * want. | |
151 | */ | |
152 | static int dafb_setpalette(unsigned int regno, unsigned int red, | |
153 | unsigned int green, unsigned int blue, | |
154 | struct fb_info *info) | |
1da177e4 | 155 | { |
1da177e4 LT |
156 | static int lastreg = -1; |
157 | unsigned long flags; | |
1da177e4 LT |
158 | |
159 | local_irq_save(flags); | |
34c41d0a FT |
160 | |
161 | /* | |
162 | * fbdev will set an entire colourmap, but X won't. Hopefully | |
163 | * this should accommodate both of them | |
164 | */ | |
165 | if (regno != lastreg + 1) { | |
1da177e4 | 166 | int i; |
34c41d0a | 167 | |
1da177e4 LT |
168 | /* Stab in the dark trying to reset the CLUT pointer */ |
169 | nubus_writel(0, &dafb_cmap_regs->reset); | |
170 | nop(); | |
34c41d0a | 171 | |
1da177e4 LT |
172 | /* Loop until we get to the register we want */ |
173 | for (i = 0; i < regno; i++) { | |
34c41d0a FT |
174 | nubus_writeb(info->cmap.red[i] >> 8, |
175 | &dafb_cmap_regs->lut); | |
1da177e4 | 176 | nop(); |
34c41d0a FT |
177 | nubus_writeb(info->cmap.green[i] >> 8, |
178 | &dafb_cmap_regs->lut); | |
1da177e4 | 179 | nop(); |
34c41d0a FT |
180 | nubus_writeb(info->cmap.blue[i] >> 8, |
181 | &dafb_cmap_regs->lut); | |
1da177e4 LT |
182 | nop(); |
183 | } | |
184 | } | |
34c41d0a | 185 | |
1da177e4 LT |
186 | nubus_writeb(red, &dafb_cmap_regs->lut); |
187 | nop(); | |
188 | nubus_writeb(green, &dafb_cmap_regs->lut); | |
189 | nop(); | |
190 | nubus_writeb(blue, &dafb_cmap_regs->lut); | |
34c41d0a | 191 | |
1da177e4 LT |
192 | local_irq_restore(flags); |
193 | lastreg = regno; | |
194 | return 0; | |
195 | } | |
196 | ||
197 | /* V8 and Brazil seem to use the same DAC. Sonora does as well. */ | |
34c41d0a FT |
198 | static int v8_brazil_setpalette(unsigned int regno, unsigned int red, |
199 | unsigned int green, unsigned int blue, | |
200 | struct fb_info *info) | |
1da177e4 LT |
201 | { |
202 | unsigned int bpp = info->var.bits_per_pixel; | |
1da177e4 LT |
203 | unsigned long flags; |
204 | ||
34c41d0a FT |
205 | if (bpp > 8) |
206 | return 1; /* failsafe */ | |
1da177e4 LT |
207 | |
208 | local_irq_save(flags); | |
209 | ||
210 | /* On these chips, the CLUT register numbers are spread out | |
34c41d0a FT |
211 | * across the register space. Thus: |
212 | * In 8bpp, all regnos are valid. | |
213 | * In 4bpp, the regnos are 0x0f, 0x1f, 0x2f, etc, etc | |
214 | * In 2bpp, the regnos are 0x3f, 0x7f, 0xbf, 0xff | |
215 | */ | |
99e11ab2 FT |
216 | regno = (regno << (8 - bpp)) | (0xFF >> bpp); |
217 | nubus_writeb(regno, &v8_brazil_cmap_regs->addr); | |
34c41d0a | 218 | nop(); |
1da177e4 LT |
219 | |
220 | /* send one color channel at a time */ | |
99e11ab2 | 221 | nubus_writeb(red, &v8_brazil_cmap_regs->lut); |
34c41d0a | 222 | nop(); |
99e11ab2 | 223 | nubus_writeb(green, &v8_brazil_cmap_regs->lut); |
34c41d0a | 224 | nop(); |
99e11ab2 | 225 | nubus_writeb(blue, &v8_brazil_cmap_regs->lut); |
1da177e4 | 226 | |
34c41d0a | 227 | local_irq_restore(flags); |
1da177e4 LT |
228 | return 0; |
229 | } | |
230 | ||
34c41d0a FT |
231 | /* RAM-Based Video */ |
232 | static int rbv_setpalette(unsigned int regno, unsigned int red, | |
233 | unsigned int green, unsigned int blue, | |
234 | struct fb_info *info) | |
1da177e4 | 235 | { |
1da177e4 LT |
236 | unsigned long flags; |
237 | ||
34c41d0a FT |
238 | if (info->var.bits_per_pixel > 8) |
239 | return 1; /* failsafe */ | |
1da177e4 LT |
240 | |
241 | local_irq_save(flags); | |
34c41d0a | 242 | |
1da177e4 LT |
243 | /* From the VideoToolbox driver. Seems to be saying that |
244 | * regno #254 and #255 are the important ones for 1-bit color, | |
245 | * regno #252-255 are the important ones for 2-bit color, etc. | |
246 | */ | |
99e11ab2 | 247 | regno += 256 - (1 << info->var.bits_per_pixel); |
1da177e4 LT |
248 | |
249 | /* reset clut? (VideoToolbox sez "not necessary") */ | |
34c41d0a FT |
250 | nubus_writeb(0xFF, &rbv_cmap_regs->cntl); |
251 | nop(); | |
252 | ||
1da177e4 | 253 | /* tell clut which address to use. */ |
99e11ab2 | 254 | nubus_writeb(regno, &rbv_cmap_regs->addr); |
34c41d0a FT |
255 | nop(); |
256 | ||
1da177e4 | 257 | /* send one color channel at a time. */ |
99e11ab2 | 258 | nubus_writeb(red, &rbv_cmap_regs->lut); |
34c41d0a | 259 | nop(); |
99e11ab2 | 260 | nubus_writeb(green, &rbv_cmap_regs->lut); |
34c41d0a | 261 | nop(); |
99e11ab2 | 262 | nubus_writeb(blue, &rbv_cmap_regs->lut); |
34c41d0a FT |
263 | |
264 | local_irq_restore(flags); | |
1da177e4 LT |
265 | return 0; |
266 | } | |
267 | ||
34c41d0a | 268 | /* Macintosh Display Card (8*24) */ |
1da177e4 LT |
269 | static int mdc_setpalette(unsigned int regno, unsigned int red, |
270 | unsigned int green, unsigned int blue, | |
271 | struct fb_info *info) | |
272 | { | |
99e11ab2 | 273 | struct mdc_cmap_regs *cmap_regs = slot_addr; |
1da177e4 LT |
274 | unsigned long flags; |
275 | ||
276 | local_irq_save(flags); | |
34c41d0a | 277 | |
1da177e4 | 278 | /* the nop's are there to order writes. */ |
99e11ab2 | 279 | nubus_writeb(regno, &cmap_regs->addr); |
34c41d0a | 280 | nop(); |
99e11ab2 | 281 | nubus_writeb(red, &cmap_regs->lut); |
34c41d0a | 282 | nop(); |
99e11ab2 | 283 | nubus_writeb(green, &cmap_regs->lut); |
34c41d0a | 284 | nop(); |
99e11ab2 | 285 | nubus_writeb(blue, &cmap_regs->lut); |
1da177e4 LT |
286 | |
287 | local_irq_restore(flags); | |
288 | return 0; | |
289 | } | |
290 | ||
291 | /* Toby frame buffer */ | |
292 | static int toby_setpalette(unsigned int regno, unsigned int red, | |
293 | unsigned int green, unsigned int blue, | |
34c41d0a | 294 | struct fb_info *info) |
1da177e4 | 295 | { |
99e11ab2 | 296 | struct toby_cmap_regs *cmap_regs = slot_addr; |
1da177e4 | 297 | unsigned int bpp = info->var.bits_per_pixel; |
1da177e4 LT |
298 | unsigned long flags; |
299 | ||
99e11ab2 FT |
300 | red = ~red; |
301 | green = ~green; | |
302 | blue = ~blue; | |
303 | regno = (regno << (8 - bpp)) | (0xFF >> bpp); | |
304 | ||
1da177e4 | 305 | local_irq_save(flags); |
34c41d0a | 306 | |
99e11ab2 | 307 | nubus_writeb(regno, &cmap_regs->addr); |
34c41d0a | 308 | nop(); |
99e11ab2 | 309 | nubus_writeb(red, &cmap_regs->lut); |
34c41d0a | 310 | nop(); |
99e11ab2 | 311 | nubus_writeb(green, &cmap_regs->lut); |
34c41d0a | 312 | nop(); |
99e11ab2 | 313 | nubus_writeb(blue, &cmap_regs->lut); |
1da177e4 LT |
314 | |
315 | local_irq_restore(flags); | |
316 | return 0; | |
317 | } | |
318 | ||
319 | /* Jet frame buffer */ | |
320 | static int jet_setpalette(unsigned int regno, unsigned int red, | |
321 | unsigned int green, unsigned int blue, | |
322 | struct fb_info *info) | |
323 | { | |
99e11ab2 | 324 | struct jet_cmap_regs *cmap_regs = slot_addr; |
1da177e4 LT |
325 | unsigned long flags; |
326 | ||
327 | local_irq_save(flags); | |
34c41d0a FT |
328 | |
329 | nubus_writeb(regno, &cmap_regs->addr); | |
330 | nop(); | |
99e11ab2 | 331 | nubus_writeb(red, &cmap_regs->lut); |
34c41d0a | 332 | nop(); |
99e11ab2 | 333 | nubus_writeb(green, &cmap_regs->lut); |
34c41d0a | 334 | nop(); |
99e11ab2 | 335 | nubus_writeb(blue, &cmap_regs->lut); |
1da177e4 LT |
336 | |
337 | local_irq_restore(flags); | |
338 | return 0; | |
339 | } | |
340 | ||
341 | /* | |
342 | * Civic framebuffer -- Quadra AV built-in video. A chip | |
343 | * called Sebastian holds the actual color palettes, and | |
34c41d0a | 344 | * apparently, there are two different banks of 512K RAM |
1da177e4 LT |
345 | * which can act as separate framebuffers for doing video |
346 | * input and viewing the screen at the same time! The 840AV | |
34c41d0a | 347 | * Can add another 1MB RAM to give the two framebuffers |
1da177e4 | 348 | * 1MB RAM apiece. |
1da177e4 | 349 | */ |
34c41d0a FT |
350 | static int civic_setpalette(unsigned int regno, unsigned int red, |
351 | unsigned int green, unsigned int blue, | |
352 | struct fb_info *info) | |
1da177e4 | 353 | { |
1da177e4 LT |
354 | unsigned long flags; |
355 | int clut_status; | |
356 | ||
34c41d0a FT |
357 | if (info->var.bits_per_pixel > 8) |
358 | return 1; /* failsafe */ | |
1da177e4 | 359 | |
1da177e4 | 360 | local_irq_save(flags); |
1da177e4 | 361 | |
34c41d0a FT |
362 | /* Set the register address */ |
363 | nubus_writeb(regno, &civic_cmap_regs->addr); | |
364 | nop(); | |
1da177e4 LT |
365 | |
366 | /* | |
367 | * Grab a status word and do some checking; | |
368 | * Then finally write the clut! | |
369 | */ | |
370 | clut_status = nubus_readb(&civic_cmap_regs->status2); | |
371 | ||
372 | if ((clut_status & 0x0008) == 0) | |
373 | { | |
374 | #if 0 | |
375 | if ((clut_status & 0x000D) != 0) | |
376 | { | |
34c41d0a FT |
377 | nubus_writeb(0x00, &civic_cmap_regs->lut); |
378 | nop(); | |
379 | nubus_writeb(0x00, &civic_cmap_regs->lut); | |
380 | nop(); | |
1da177e4 LT |
381 | } |
382 | #endif | |
383 | ||
34c41d0a FT |
384 | nubus_writeb(red, &civic_cmap_regs->lut); |
385 | nop(); | |
386 | nubus_writeb(green, &civic_cmap_regs->lut); | |
387 | nop(); | |
388 | nubus_writeb(blue, &civic_cmap_regs->lut); | |
389 | nop(); | |
390 | nubus_writeb(0x00, &civic_cmap_regs->lut); | |
1da177e4 LT |
391 | } |
392 | else | |
393 | { | |
394 | unsigned char junk; | |
395 | ||
34c41d0a FT |
396 | junk = nubus_readb(&civic_cmap_regs->lut); |
397 | nop(); | |
398 | junk = nubus_readb(&civic_cmap_regs->lut); | |
399 | nop(); | |
400 | junk = nubus_readb(&civic_cmap_regs->lut); | |
401 | nop(); | |
402 | junk = nubus_readb(&civic_cmap_regs->lut); | |
403 | nop(); | |
1da177e4 LT |
404 | |
405 | if ((clut_status & 0x000D) != 0) | |
406 | { | |
34c41d0a FT |
407 | nubus_writeb(0x00, &civic_cmap_regs->lut); |
408 | nop(); | |
409 | nubus_writeb(0x00, &civic_cmap_regs->lut); | |
410 | nop(); | |
1da177e4 LT |
411 | } |
412 | ||
34c41d0a FT |
413 | nubus_writeb(red, &civic_cmap_regs->lut); |
414 | nop(); | |
415 | nubus_writeb(green, &civic_cmap_regs->lut); | |
416 | nop(); | |
417 | nubus_writeb(blue, &civic_cmap_regs->lut); | |
418 | nop(); | |
419 | nubus_writeb(junk, &civic_cmap_regs->lut); | |
1da177e4 LT |
420 | } |
421 | ||
422 | local_irq_restore(flags); | |
1da177e4 LT |
423 | return 0; |
424 | } | |
425 | ||
426 | /* | |
427 | * The CSC is the framebuffer on the PowerBook 190 series | |
428 | * (and the 5300 too, but that's a PowerMac). This function | |
429 | * brought to you in part by the ECSC driver for MkLinux. | |
430 | */ | |
34c41d0a FT |
431 | static int csc_setpalette(unsigned int regno, unsigned int red, |
432 | unsigned int green, unsigned int blue, | |
433 | struct fb_info *info) | |
1da177e4 | 434 | { |
99e11ab2 FT |
435 | unsigned long flags; |
436 | ||
437 | local_irq_save(flags); | |
438 | ||
439 | udelay(1); /* mklinux on PB 5300 waits for 260 ns */ | |
3839d01d | 440 | nubus_writeb(regno, &csc_cmap_regs->clut_waddr); |
99e11ab2 | 441 | nubus_writeb(red, &csc_cmap_regs->clut_data); |
3839d01d | 442 | nubus_writeb(green, &csc_cmap_regs->clut_data); |
99e11ab2 FT |
443 | nubus_writeb(blue, &csc_cmap_regs->clut_data); |
444 | ||
445 | local_irq_restore(flags); | |
1da177e4 LT |
446 | return 0; |
447 | } | |
448 | ||
449 | static int macfb_setcolreg(unsigned regno, unsigned red, unsigned green, | |
450 | unsigned blue, unsigned transp, | |
451 | struct fb_info *fb_info) | |
452 | { | |
453 | /* | |
34c41d0a FT |
454 | * Set a single color register. The values supplied are |
455 | * already rounded down to the hardware's capabilities | |
456 | * (according to the entries in the `var' structure). | |
457 | * Return non-zero for invalid regno. | |
1da177e4 LT |
458 | */ |
459 | ||
460 | if (regno >= fb_info->cmap.len) | |
461 | return 1; | |
462 | ||
24fc7223 AD |
463 | if (fb_info->var.bits_per_pixel <= 8) { |
464 | switch (fb_info->var.bits_per_pixel) { | |
465 | case 1: | |
466 | /* We shouldn't get here */ | |
467 | break; | |
468 | case 2: | |
469 | case 4: | |
470 | case 8: | |
471 | if (macfb_setpalette) | |
99e11ab2 FT |
472 | macfb_setpalette(regno, red >> 8, green >> 8, |
473 | blue >> 8, fb_info); | |
24fc7223 AD |
474 | else |
475 | return 1; | |
476 | break; | |
477 | } | |
478 | } else if (regno < 16) { | |
479 | switch (fb_info->var.bits_per_pixel) { | |
480 | case 16: | |
481 | if (fb_info->var.red.offset == 10) { | |
482 | /* 1:5:5:5 */ | |
483 | ((u32*) (fb_info->pseudo_palette))[regno] = | |
1da177e4 LT |
484 | ((red & 0xf800) >> 1) | |
485 | ((green & 0xf800) >> 6) | | |
486 | ((blue & 0xf800) >> 11) | | |
487 | ((transp != 0) << 15); | |
24fc7223 AD |
488 | } else { |
489 | /* 0:5:6:5 */ | |
490 | ((u32*) (fb_info->pseudo_palette))[regno] = | |
34c41d0a | 491 | ((red & 0xf800) >> 0) | |
1da177e4 LT |
492 | ((green & 0xfc00) >> 5) | |
493 | ((blue & 0xf800) >> 11); | |
24fc7223 AD |
494 | } |
495 | break; | |
34c41d0a FT |
496 | /* |
497 | * 24-bit colour almost doesn't exist on 68k Macs -- | |
498 | * http://support.apple.com/kb/TA28634 (Old Article: 10992) | |
499 | */ | |
24fc7223 | 500 | case 24: |
24fc7223 AD |
501 | case 32: |
502 | red >>= 8; | |
503 | green >>= 8; | |
504 | blue >>= 8; | |
505 | ((u32 *)(fb_info->pseudo_palette))[regno] = | |
34c41d0a | 506 | (red << fb_info->var.red.offset) | |
24fc7223 AD |
507 | (green << fb_info->var.green.offset) | |
508 | (blue << fb_info->var.blue.offset); | |
509 | break; | |
1da177e4 | 510 | } |
24fc7223 AD |
511 | } |
512 | ||
513 | return 0; | |
1da177e4 LT |
514 | } |
515 | ||
516 | static struct fb_ops macfb_ops = { | |
517 | .owner = THIS_MODULE, | |
518 | .fb_setcolreg = macfb_setcolreg, | |
519 | .fb_fillrect = cfb_fillrect, | |
520 | .fb_copyarea = cfb_copyarea, | |
521 | .fb_imageblit = cfb_imageblit, | |
1da177e4 LT |
522 | }; |
523 | ||
511e7483 | 524 | static void __init macfb_setup(char *options) |
1da177e4 LT |
525 | { |
526 | char *this_opt; | |
34c41d0a | 527 | |
1da177e4 LT |
528 | if (!options || !*options) |
529 | return; | |
34c41d0a | 530 | |
1da177e4 | 531 | while ((this_opt = strsep(&options, ",")) != NULL) { |
34c41d0a FT |
532 | if (!*this_opt) |
533 | continue; | |
534 | ||
535 | if (!strcmp(this_opt, "inverse")) | |
536 | inverse = 1; | |
537 | else | |
538 | if (!strcmp(this_opt, "vidtest")) | |
539 | vidtest = 1; /* enable experimental CLUT code */ | |
1da177e4 LT |
540 | } |
541 | } | |
542 | ||
164a765b AL |
543 | static void __init iounmap_macfb(void) |
544 | { | |
164a765b AL |
545 | if (dafb_cmap_regs) |
546 | iounmap(dafb_cmap_regs); | |
547 | if (v8_brazil_cmap_regs) | |
548 | iounmap(v8_brazil_cmap_regs); | |
549 | if (rbv_cmap_regs) | |
550 | iounmap(rbv_cmap_regs); | |
551 | if (civic_cmap_regs) | |
552 | iounmap(civic_cmap_regs); | |
553 | if (csc_cmap_regs) | |
554 | iounmap(csc_cmap_regs); | |
555 | } | |
556 | ||
ed1705af | 557 | static int __init macfb_init(void) |
1da177e4 LT |
558 | { |
559 | int video_cmap_len, video_is_nubus = 0; | |
560 | struct nubus_dev* ndev = NULL; | |
561 | char *option = NULL; | |
ed1705af | 562 | int err; |
1da177e4 LT |
563 | |
564 | if (fb_get_options("macfb", &option)) | |
565 | return -ENODEV; | |
566 | macfb_setup(option); | |
567 | ||
568 | if (!MACH_IS_MAC) | |
ed1705af | 569 | return -ENODEV; |
1da177e4 | 570 | |
11e8faca FT |
571 | if (mac_bi_data.id == MAC_MODEL_Q630 || |
572 | mac_bi_data.id == MAC_MODEL_P588) | |
573 | return -ENODEV; /* See valkyriefb.c */ | |
574 | ||
1da177e4 LT |
575 | macfb_defined.xres = mac_bi_data.dimensions & 0xFFFF; |
576 | macfb_defined.yres = mac_bi_data.dimensions >> 16; | |
577 | macfb_defined.bits_per_pixel = mac_bi_data.videodepth; | |
34c41d0a | 578 | |
1da177e4 | 579 | macfb_fix.line_length = mac_bi_data.videorow; |
34c41d0a | 580 | macfb_fix.smem_len = macfb_fix.line_length * macfb_defined.yres; |
1da177e4 | 581 | /* Note: physical address (since 2.1.127) */ |
34c41d0a FT |
582 | macfb_fix.smem_start = mac_bi_data.videoaddr; |
583 | ||
584 | /* | |
585 | * This is actually redundant with the initial mappings. | |
586 | * However, there are some non-obvious aspects to the way | |
587 | * those mappings are set up, so this is in fact the safest | |
588 | * way to ensure that this driver will work on every possible Mac | |
589 | */ | |
99e11ab2 FT |
590 | fb_info.screen_base = ioremap(mac_bi_data.videoaddr, |
591 | macfb_fix.smem_len); | |
592 | if (!fb_info.screen_base) | |
593 | return -ENODEV; | |
594 | ||
d9070fc4 FT |
595 | pr_info("macfb: framebuffer at 0x%08lx, mapped to 0x%p, size %dk\n", |
596 | macfb_fix.smem_start, fb_info.screen_base, | |
597 | macfb_fix.smem_len / 1024); | |
598 | pr_info("macfb: mode is %dx%dx%d, linelength=%d\n", | |
599 | macfb_defined.xres, macfb_defined.yres, | |
600 | macfb_defined.bits_per_pixel, macfb_fix.line_length); | |
34c41d0a | 601 | |
99e11ab2 | 602 | /* Fill in the available video resolution */ |
34c41d0a FT |
603 | macfb_defined.xres_virtual = macfb_defined.xres; |
604 | macfb_defined.yres_virtual = macfb_defined.yres; | |
605 | macfb_defined.height = PIXEL_TO_MM(macfb_defined.yres); | |
606 | macfb_defined.width = PIXEL_TO_MM(macfb_defined.xres); | |
1da177e4 | 607 | |
99e11ab2 | 608 | /* Some dummy values for timing to make fbset happy */ |
34c41d0a FT |
609 | macfb_defined.pixclock = 10000000 / macfb_defined.xres * |
610 | 1000 / macfb_defined.yres; | |
1da177e4 LT |
611 | macfb_defined.left_margin = (macfb_defined.xres / 8) & 0xf8; |
612 | macfb_defined.hsync_len = (macfb_defined.xres / 8) & 0xf8; | |
613 | ||
614 | switch (macfb_defined.bits_per_pixel) { | |
615 | case 1: | |
1da177e4 LT |
616 | macfb_defined.red.length = macfb_defined.bits_per_pixel; |
617 | macfb_defined.green.length = macfb_defined.bits_per_pixel; | |
618 | macfb_defined.blue.length = macfb_defined.bits_per_pixel; | |
d9070fc4 | 619 | video_cmap_len = 2; |
1da177e4 LT |
620 | macfb_fix.visual = FB_VISUAL_MONO01; |
621 | break; | |
622 | case 2: | |
623 | case 4: | |
624 | case 8: | |
625 | macfb_defined.red.length = macfb_defined.bits_per_pixel; | |
626 | macfb_defined.green.length = macfb_defined.bits_per_pixel; | |
627 | macfb_defined.blue.length = macfb_defined.bits_per_pixel; | |
628 | video_cmap_len = 1 << macfb_defined.bits_per_pixel; | |
629 | macfb_fix.visual = FB_VISUAL_PSEUDOCOLOR; | |
630 | break; | |
631 | case 16: | |
632 | macfb_defined.transp.offset = 15; | |
633 | macfb_defined.transp.length = 1; | |
634 | macfb_defined.red.offset = 10; | |
635 | macfb_defined.red.length = 5; | |
636 | macfb_defined.green.offset = 5; | |
637 | macfb_defined.green.length = 5; | |
638 | macfb_defined.blue.offset = 0; | |
639 | macfb_defined.blue.length = 5; | |
1da177e4 | 640 | video_cmap_len = 16; |
34c41d0a FT |
641 | /* |
642 | * Should actually be FB_VISUAL_DIRECTCOLOR, but this | |
643 | * works too | |
644 | */ | |
1da177e4 LT |
645 | macfb_fix.visual = FB_VISUAL_TRUECOLOR; |
646 | break; | |
647 | case 24: | |
648 | case 32: | |
1da177e4 LT |
649 | macfb_defined.red.offset = 16; |
650 | macfb_defined.red.length = 8; | |
651 | macfb_defined.green.offset = 8; | |
652 | macfb_defined.green.length = 8; | |
653 | macfb_defined.blue.offset = 0; | |
654 | macfb_defined.blue.length = 8; | |
1da177e4 LT |
655 | video_cmap_len = 16; |
656 | macfb_fix.visual = FB_VISUAL_TRUECOLOR; | |
99e11ab2 | 657 | break; |
1da177e4 | 658 | default: |
d9070fc4 | 659 | pr_err("macfb: unknown or unsupported bit depth: %d\n", |
34c41d0a | 660 | macfb_defined.bits_per_pixel); |
d9070fc4 FT |
661 | err = -EINVAL; |
662 | goto fail_unmap; | |
1da177e4 LT |
663 | } |
664 | ||
34c41d0a FT |
665 | /* |
666 | * We take a wild guess that if the video physical address is | |
667 | * in nubus slot space, that the nubus card is driving video. | |
668 | * Penguin really ought to tell us whether we are using internal | |
669 | * video or not. | |
670 | * Hopefully we only find one of them. Otherwise our NuBus | |
671 | * code is really broken :-) | |
1da177e4 | 672 | */ |
1da177e4 | 673 | |
99e11ab2 FT |
674 | while ((ndev = nubus_find_type(NUBUS_CAT_DISPLAY, |
675 | NUBUS_TYPE_VIDEO, ndev))) | |
1da177e4 | 676 | { |
99e11ab2 FT |
677 | unsigned long base = ndev->board->slot_addr; |
678 | ||
679 | if (mac_bi_data.videoaddr < base || | |
680 | mac_bi_data.videoaddr - base > 0xFFFFFF) | |
1da177e4 | 681 | continue; |
99e11ab2 | 682 | |
1da177e4 | 683 | video_is_nubus = 1; |
99e11ab2 | 684 | slot_addr = (unsigned char *)base; |
1da177e4 LT |
685 | |
686 | switch(ndev->dr_hw) { | |
687 | case NUBUS_DRHW_APPLE_MDC: | |
89c223a6 | 688 | strcpy(macfb_fix.id, "Mac Disp. Card"); |
1da177e4 LT |
689 | macfb_setpalette = mdc_setpalette; |
690 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
691 | break; | |
692 | case NUBUS_DRHW_APPLE_TFB: | |
89c223a6 | 693 | strcpy(macfb_fix.id, "Toby"); |
1da177e4 LT |
694 | macfb_setpalette = toby_setpalette; |
695 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
696 | break; | |
697 | case NUBUS_DRHW_APPLE_JET: | |
89c223a6 | 698 | strcpy(macfb_fix.id, "Jet"); |
1da177e4 LT |
699 | macfb_setpalette = jet_setpalette; |
700 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
34c41d0a | 701 | break; |
1da177e4 | 702 | default: |
89c223a6 | 703 | strcpy(macfb_fix.id, "Generic NuBus"); |
1da177e4 LT |
704 | break; |
705 | } | |
706 | } | |
707 | ||
708 | /* If it's not a NuBus card, it must be internal video */ | |
1da177e4 | 709 | if (!video_is_nubus) |
34c41d0a FT |
710 | switch (mac_bi_data.id) { |
711 | /* | |
712 | * DAFB Quadras | |
713 | * Note: these first four have the v7 DAFB, which is | |
714 | * known to be rather unlike the ones used in the | |
715 | * other models | |
716 | */ | |
1da177e4 LT |
717 | case MAC_MODEL_P475: |
718 | case MAC_MODEL_P475F: | |
719 | case MAC_MODEL_P575: | |
720 | case MAC_MODEL_Q605: | |
34c41d0a | 721 | |
1da177e4 LT |
722 | case MAC_MODEL_Q800: |
723 | case MAC_MODEL_Q650: | |
724 | case MAC_MODEL_Q610: | |
725 | case MAC_MODEL_C650: | |
726 | case MAC_MODEL_C610: | |
727 | case MAC_MODEL_Q700: | |
728 | case MAC_MODEL_Q900: | |
729 | case MAC_MODEL_Q950: | |
89c223a6 | 730 | strcpy(macfb_fix.id, "DAFB"); |
1da177e4 | 731 | macfb_setpalette = dafb_setpalette; |
1da177e4 | 732 | dafb_cmap_regs = ioremap(DAFB_BASE, 0x1000); |
d9070fc4 | 733 | macfb_defined.activate = FB_ACTIVATE_NOW; |
1da177e4 LT |
734 | break; |
735 | ||
34c41d0a FT |
736 | /* |
737 | * LC II uses the V8 framebuffer | |
738 | */ | |
1da177e4 | 739 | case MAC_MODEL_LCII: |
89c223a6 | 740 | strcpy(macfb_fix.id, "V8"); |
1da177e4 | 741 | macfb_setpalette = v8_brazil_setpalette; |
1da177e4 | 742 | v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000); |
d9070fc4 | 743 | macfb_defined.activate = FB_ACTIVATE_NOW; |
1da177e4 | 744 | break; |
34c41d0a FT |
745 | |
746 | /* | |
747 | * IIvi, IIvx use the "Brazil" framebuffer (which is | |
748 | * very much like the V8, it seems, and probably uses | |
749 | * the same DAC) | |
750 | */ | |
1da177e4 LT |
751 | case MAC_MODEL_IIVI: |
752 | case MAC_MODEL_IIVX: | |
753 | case MAC_MODEL_P600: | |
89c223a6 | 754 | strcpy(macfb_fix.id, "Brazil"); |
1da177e4 | 755 | macfb_setpalette = v8_brazil_setpalette; |
1da177e4 | 756 | v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000); |
d9070fc4 | 757 | macfb_defined.activate = FB_ACTIVATE_NOW; |
1da177e4 | 758 | break; |
34c41d0a FT |
759 | |
760 | /* | |
761 | * LC III (and friends) use the Sonora framebuffer | |
762 | * Incidentally this is also used in the non-AV models | |
763 | * of the x100 PowerMacs | |
764 | * These do in fact seem to use the same DAC interface | |
765 | * as the LC II. | |
766 | */ | |
1da177e4 LT |
767 | case MAC_MODEL_LCIII: |
768 | case MAC_MODEL_P520: | |
769 | case MAC_MODEL_P550: | |
770 | case MAC_MODEL_P460: | |
89c223a6 | 771 | strcpy(macfb_fix.id, "Sonora"); |
d9070fc4 | 772 | macfb_setpalette = v8_brazil_setpalette; |
1da177e4 | 773 | v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000); |
d9070fc4 | 774 | macfb_defined.activate = FB_ACTIVATE_NOW; |
1da177e4 LT |
775 | break; |
776 | ||
34c41d0a FT |
777 | /* |
778 | * IIci and IIsi use the infamous RBV chip | |
779 | * (the IIsi is just a rebadged and crippled | |
780 | * IIci in a different case, BTW) | |
781 | */ | |
1da177e4 LT |
782 | case MAC_MODEL_IICI: |
783 | case MAC_MODEL_IISI: | |
89c223a6 | 784 | strcpy(macfb_fix.id, "RBV"); |
d9070fc4 | 785 | macfb_setpalette = rbv_setpalette; |
1da177e4 | 786 | rbv_cmap_regs = ioremap(DAC_BASE, 0x1000); |
d9070fc4 | 787 | macfb_defined.activate = FB_ACTIVATE_NOW; |
1da177e4 LT |
788 | break; |
789 | ||
34c41d0a FT |
790 | /* |
791 | * AVs use the Civic framebuffer | |
792 | */ | |
1da177e4 LT |
793 | case MAC_MODEL_Q840: |
794 | case MAC_MODEL_C660: | |
89c223a6 | 795 | strcpy(macfb_fix.id, "Civic"); |
d9070fc4 | 796 | macfb_setpalette = civic_setpalette; |
1da177e4 | 797 | civic_cmap_regs = ioremap(CIVIC_BASE, 0x1000); |
d9070fc4 | 798 | macfb_defined.activate = FB_ACTIVATE_NOW; |
1da177e4 LT |
799 | break; |
800 | ||
801 | ||
34c41d0a FT |
802 | /* |
803 | * Assorted weirdos | |
804 | * We think this may be like the LC II | |
805 | */ | |
1da177e4 | 806 | case MAC_MODEL_LC: |
d9070fc4 | 807 | strcpy(macfb_fix.id, "LC"); |
1da177e4 LT |
808 | if (vidtest) { |
809 | macfb_setpalette = v8_brazil_setpalette; | |
1da177e4 LT |
810 | v8_brazil_cmap_regs = |
811 | ioremap(DAC_BASE, 0x1000); | |
d9070fc4 | 812 | macfb_defined.activate = FB_ACTIVATE_NOW; |
1da177e4 | 813 | } |
1da177e4 | 814 | break; |
34c41d0a FT |
815 | |
816 | /* | |
817 | * We think this may be like the LC II | |
818 | */ | |
1da177e4 | 819 | case MAC_MODEL_CCL: |
d9070fc4 | 820 | strcpy(macfb_fix.id, "Color Classic"); |
1da177e4 LT |
821 | if (vidtest) { |
822 | macfb_setpalette = v8_brazil_setpalette; | |
1da177e4 LT |
823 | v8_brazil_cmap_regs = |
824 | ioremap(DAC_BASE, 0x1000); | |
d9070fc4 | 825 | macfb_defined.activate = FB_ACTIVATE_NOW; |
1da177e4 | 826 | } |
1da177e4 LT |
827 | break; |
828 | ||
34c41d0a FT |
829 | /* |
830 | * And we *do* mean "weirdos" | |
831 | */ | |
1da177e4 | 832 | case MAC_MODEL_TV: |
89c223a6 | 833 | strcpy(macfb_fix.id, "Mac TV"); |
1da177e4 LT |
834 | break; |
835 | ||
34c41d0a FT |
836 | /* |
837 | * These don't have colour, so no need to worry | |
838 | */ | |
1da177e4 LT |
839 | case MAC_MODEL_SE30: |
840 | case MAC_MODEL_CLII: | |
89c223a6 | 841 | strcpy(macfb_fix.id, "Monochrome"); |
1da177e4 LT |
842 | break; |
843 | ||
34c41d0a FT |
844 | /* |
845 | * Powerbooks are particularly difficult. Many of | |
846 | * them have separate framebuffers for external and | |
847 | * internal video, which is admittedly pretty cool, | |
848 | * but will be a bit of a headache to support here. | |
849 | * Also, many of them are grayscale, and we don't | |
850 | * really support that. | |
851 | */ | |
1da177e4 | 852 | |
99e11ab2 FT |
853 | /* |
854 | * Slot 0 ROM says TIM. No external video. B&W. | |
855 | */ | |
1da177e4 LT |
856 | case MAC_MODEL_PB140: |
857 | case MAC_MODEL_PB145: | |
858 | case MAC_MODEL_PB170: | |
89c223a6 | 859 | strcpy(macfb_fix.id, "DDC"); |
1da177e4 LT |
860 | break; |
861 | ||
34c41d0a FT |
862 | /* |
863 | * Internal is GSC, External (if present) is ViSC | |
864 | */ | |
1da177e4 LT |
865 | case MAC_MODEL_PB150: /* no external video */ |
866 | case MAC_MODEL_PB160: | |
867 | case MAC_MODEL_PB165: | |
868 | case MAC_MODEL_PB180: | |
869 | case MAC_MODEL_PB210: | |
870 | case MAC_MODEL_PB230: | |
89c223a6 | 871 | strcpy(macfb_fix.id, "GSC"); |
1da177e4 LT |
872 | break; |
873 | ||
34c41d0a FT |
874 | /* |
875 | * Internal is TIM, External is ViSC | |
876 | */ | |
1da177e4 LT |
877 | case MAC_MODEL_PB165C: |
878 | case MAC_MODEL_PB180C: | |
89c223a6 | 879 | strcpy(macfb_fix.id, "TIM"); |
1da177e4 LT |
880 | break; |
881 | ||
34c41d0a FT |
882 | /* |
883 | * Internal is CSC, External is Keystone+Ariel. | |
884 | */ | |
1da177e4 LT |
885 | case MAC_MODEL_PB190: /* external video is optional */ |
886 | case MAC_MODEL_PB520: | |
887 | case MAC_MODEL_PB250: | |
888 | case MAC_MODEL_PB270C: | |
889 | case MAC_MODEL_PB280: | |
890 | case MAC_MODEL_PB280C: | |
89c223a6 | 891 | strcpy(macfb_fix.id, "CSC"); |
d9070fc4 | 892 | macfb_setpalette = csc_setpalette; |
1da177e4 | 893 | csc_cmap_regs = ioremap(CSC_BASE, 0x1000); |
d9070fc4 | 894 | macfb_defined.activate = FB_ACTIVATE_NOW; |
1da177e4 | 895 | break; |
34c41d0a | 896 | |
1da177e4 | 897 | default: |
89c223a6 | 898 | strcpy(macfb_fix.id, "Unknown"); |
1da177e4 LT |
899 | break; |
900 | } | |
901 | ||
902 | fb_info.fbops = &macfb_ops; | |
903 | fb_info.var = macfb_defined; | |
904 | fb_info.fix = macfb_fix; | |
905 | fb_info.pseudo_palette = pseudo_palette; | |
906 | fb_info.flags = FBINFO_DEFAULT; | |
907 | ||
89c223a6 FT |
908 | err = fb_alloc_cmap(&fb_info.cmap, video_cmap_len, 0); |
909 | if (err) | |
910 | goto fail_unmap; | |
34c41d0a | 911 | |
ed1705af | 912 | err = register_framebuffer(&fb_info); |
89c223a6 FT |
913 | if (err) |
914 | goto fail_dealloc; | |
915 | ||
d9070fc4 FT |
916 | pr_info("fb%d: %s frame buffer device\n", |
917 | fb_info.node, fb_info.fix.id); | |
918 | ||
89c223a6 FT |
919 | return 0; |
920 | ||
921 | fail_dealloc: | |
922 | fb_dealloc_cmap(&fb_info.cmap); | |
923 | fail_unmap: | |
924 | iounmap(fb_info.screen_base); | |
925 | iounmap_macfb(); | |
ed1705af | 926 | return err; |
1da177e4 LT |
927 | } |
928 | ||
929 | module_init(macfb_init); | |
930 | MODULE_LICENSE("GPL"); |