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> | |
1da177e4 LT |
37 | #include <asm/macintosh.h> |
38 | #include <asm/io.h> | |
1da177e4 LT |
39 | |
40 | /* Common DAC base address for the LC, RBV, Valkyrie, and IIvx */ | |
41 | #define DAC_BASE 0x50f24000 | |
42 | ||
43 | /* Some addresses for the DAFB */ | |
44 | #define DAFB_BASE 0xf9800200 | |
45 | ||
46 | /* Address for the built-in Civic framebuffer in Quadra AVs */ | |
34c41d0a | 47 | #define CIVIC_BASE 0x50f30800 |
1da177e4 LT |
48 | |
49 | /* GSC (Gray Scale Controller) base address */ | |
50 | #define GSC_BASE 0x50F20000 | |
51 | ||
52 | /* CSC (Color Screen Controller) base address */ | |
53 | #define CSC_BASE 0x50F20000 | |
54 | ||
34c41d0a FT |
55 | static int (*macfb_setpalette)(unsigned int regno, unsigned int red, |
56 | unsigned int green, unsigned int blue, | |
57 | struct fb_info *info); | |
1da177e4 | 58 | |
3839d01d | 59 | static struct { |
1da177e4 LT |
60 | unsigned char addr; |
61 | unsigned char lut; | |
3839d01d | 62 | } __iomem *v8_brazil_cmap_regs; |
1da177e4 | 63 | |
3839d01d | 64 | static struct { |
1da177e4 LT |
65 | unsigned char addr; |
66 | char pad1[3]; /* word aligned */ | |
67 | unsigned char lut; | |
68 | char pad2[3]; /* word aligned */ | |
69 | unsigned char cntl; /* a guess as to purpose */ | |
3839d01d | 70 | } __iomem *rbv_cmap_regs; |
1da177e4 | 71 | |
3839d01d | 72 | static struct { |
1da177e4 LT |
73 | unsigned long reset; |
74 | unsigned long pad1[3]; | |
75 | unsigned char pad2[3]; | |
76 | unsigned char lut; | |
3839d01d | 77 | } __iomem *dafb_cmap_regs; |
1da177e4 | 78 | |
3839d01d | 79 | static struct { |
1da177e4 LT |
80 | unsigned char addr; /* OFFSET: 0x00 */ |
81 | unsigned char pad1[15]; | |
82 | unsigned char lut; /* OFFSET: 0x10 */ | |
83 | unsigned char pad2[15]; | |
84 | unsigned char status; /* OFFSET: 0x20 */ | |
85 | unsigned char pad3[7]; | |
86 | unsigned long vbl_addr; /* OFFSET: 0x28 */ | |
87 | unsigned int status2; /* OFFSET: 0x2C */ | |
3839d01d | 88 | } __iomem *civic_cmap_regs; |
1da177e4 | 89 | |
3839d01d | 90 | static struct { |
34c41d0a FT |
91 | char pad1[0x40]; |
92 | unsigned char clut_waddr; /* 0x40 */ | |
93 | char pad2; | |
94 | unsigned char clut_data; /* 0x42 */ | |
95 | char pad3[0x3]; | |
96 | unsigned char clut_raddr; /* 0x46 */ | |
3839d01d | 97 | } __iomem *csc_cmap_regs; |
1da177e4 | 98 | |
34c41d0a | 99 | /* The registers in these structs are in NuBus slot space */ |
1da177e4 LT |
100 | struct mdc_cmap_regs { |
101 | char pad1[0x200200]; | |
102 | unsigned char addr; | |
103 | char pad2[6]; | |
104 | unsigned char lut; | |
105 | }; | |
106 | ||
107 | struct toby_cmap_regs { | |
108 | char pad1[0x90018]; | |
109 | unsigned char lut; /* TFBClutWDataReg, offset 0x90018 */ | |
110 | char pad2[3]; | |
111 | unsigned char addr; /* TFBClutAddrReg, offset 0x9001C */ | |
112 | }; | |
113 | ||
114 | struct jet_cmap_regs { | |
115 | char pad1[0xe0e000]; | |
116 | unsigned char addr; | |
117 | unsigned char lut; | |
118 | }; | |
119 | ||
34c41d0a | 120 | #define PIXEL_TO_MM(a) (((a)*10)/28) /* width in mm at 72 dpi */ |
1da177e4 | 121 | |
1da177e4 | 122 | static struct fb_var_screeninfo macfb_defined = { |
34c41d0a | 123 | .bits_per_pixel = 8, |
1da177e4 LT |
124 | .activate = FB_ACTIVATE_NOW, |
125 | .width = -1, | |
126 | .height = -1, | |
127 | .right_margin = 32, | |
128 | .upper_margin = 16, | |
129 | .lower_margin = 4, | |
130 | .vsync_len = 4, | |
131 | .vmode = FB_VMODE_NONINTERLACED, | |
132 | }; | |
133 | ||
134 | static struct fb_fix_screeninfo macfb_fix = { | |
1da177e4 LT |
135 | .type = FB_TYPE_PACKED_PIXELS, |
136 | .accel = FB_ACCEL_NONE, | |
137 | }; | |
138 | ||
99e11ab2 | 139 | static void *slot_addr; |
1da177e4 | 140 | static struct fb_info fb_info; |
24fc7223 | 141 | static u32 pseudo_palette[16]; |
34c41d0a FT |
142 | static int inverse; |
143 | static int vidtest; | |
144 | ||
145 | /* | |
146 | * Unlike the Valkyrie, the DAFB cannot set individual colormap | |
147 | * registers. Therefore, we do what the MacOS driver does (no | |
148 | * kidding!) and simply set them one by one until we hit the one we | |
149 | * want. | |
150 | */ | |
151 | static int dafb_setpalette(unsigned int regno, unsigned int red, | |
152 | unsigned int green, unsigned int blue, | |
153 | struct fb_info *info) | |
1da177e4 | 154 | { |
1da177e4 LT |
155 | static int lastreg = -1; |
156 | unsigned long flags; | |
1da177e4 LT |
157 | |
158 | local_irq_save(flags); | |
34c41d0a FT |
159 | |
160 | /* | |
161 | * fbdev will set an entire colourmap, but X won't. Hopefully | |
162 | * this should accommodate both of them | |
163 | */ | |
164 | if (regno != lastreg + 1) { | |
1da177e4 | 165 | int i; |
34c41d0a | 166 | |
1da177e4 LT |
167 | /* Stab in the dark trying to reset the CLUT pointer */ |
168 | nubus_writel(0, &dafb_cmap_regs->reset); | |
169 | nop(); | |
34c41d0a | 170 | |
1da177e4 LT |
171 | /* Loop until we get to the register we want */ |
172 | for (i = 0; i < regno; i++) { | |
34c41d0a FT |
173 | nubus_writeb(info->cmap.red[i] >> 8, |
174 | &dafb_cmap_regs->lut); | |
1da177e4 | 175 | nop(); |
34c41d0a FT |
176 | nubus_writeb(info->cmap.green[i] >> 8, |
177 | &dafb_cmap_regs->lut); | |
1da177e4 | 178 | nop(); |
34c41d0a FT |
179 | nubus_writeb(info->cmap.blue[i] >> 8, |
180 | &dafb_cmap_regs->lut); | |
1da177e4 LT |
181 | nop(); |
182 | } | |
183 | } | |
34c41d0a | 184 | |
1da177e4 LT |
185 | nubus_writeb(red, &dafb_cmap_regs->lut); |
186 | nop(); | |
187 | nubus_writeb(green, &dafb_cmap_regs->lut); | |
188 | nop(); | |
189 | nubus_writeb(blue, &dafb_cmap_regs->lut); | |
34c41d0a | 190 | |
1da177e4 LT |
191 | local_irq_restore(flags); |
192 | lastreg = regno; | |
193 | return 0; | |
194 | } | |
195 | ||
196 | /* V8 and Brazil seem to use the same DAC. Sonora does as well. */ | |
34c41d0a FT |
197 | static int v8_brazil_setpalette(unsigned int regno, unsigned int red, |
198 | unsigned int green, unsigned int blue, | |
199 | struct fb_info *info) | |
1da177e4 LT |
200 | { |
201 | unsigned int bpp = info->var.bits_per_pixel; | |
1da177e4 LT |
202 | unsigned long flags; |
203 | ||
34c41d0a FT |
204 | if (bpp > 8) |
205 | return 1; /* failsafe */ | |
1da177e4 LT |
206 | |
207 | local_irq_save(flags); | |
208 | ||
209 | /* On these chips, the CLUT register numbers are spread out | |
34c41d0a FT |
210 | * across the register space. Thus: |
211 | * In 8bpp, all regnos are valid. | |
212 | * In 4bpp, the regnos are 0x0f, 0x1f, 0x2f, etc, etc | |
213 | * In 2bpp, the regnos are 0x3f, 0x7f, 0xbf, 0xff | |
214 | */ | |
99e11ab2 FT |
215 | regno = (regno << (8 - bpp)) | (0xFF >> bpp); |
216 | nubus_writeb(regno, &v8_brazil_cmap_regs->addr); | |
34c41d0a | 217 | nop(); |
1da177e4 LT |
218 | |
219 | /* send one color channel at a time */ | |
99e11ab2 | 220 | nubus_writeb(red, &v8_brazil_cmap_regs->lut); |
34c41d0a | 221 | nop(); |
99e11ab2 | 222 | nubus_writeb(green, &v8_brazil_cmap_regs->lut); |
34c41d0a | 223 | nop(); |
99e11ab2 | 224 | nubus_writeb(blue, &v8_brazil_cmap_regs->lut); |
1da177e4 | 225 | |
34c41d0a | 226 | local_irq_restore(flags); |
1da177e4 LT |
227 | return 0; |
228 | } | |
229 | ||
34c41d0a FT |
230 | /* RAM-Based Video */ |
231 | static int rbv_setpalette(unsigned int regno, unsigned int red, | |
232 | unsigned int green, unsigned int blue, | |
233 | struct fb_info *info) | |
1da177e4 | 234 | { |
1da177e4 LT |
235 | unsigned long flags; |
236 | ||
34c41d0a FT |
237 | if (info->var.bits_per_pixel > 8) |
238 | return 1; /* failsafe */ | |
1da177e4 LT |
239 | |
240 | local_irq_save(flags); | |
34c41d0a | 241 | |
1da177e4 LT |
242 | /* From the VideoToolbox driver. Seems to be saying that |
243 | * regno #254 and #255 are the important ones for 1-bit color, | |
244 | * regno #252-255 are the important ones for 2-bit color, etc. | |
245 | */ | |
99e11ab2 | 246 | regno += 256 - (1 << info->var.bits_per_pixel); |
1da177e4 LT |
247 | |
248 | /* reset clut? (VideoToolbox sez "not necessary") */ | |
34c41d0a FT |
249 | nubus_writeb(0xFF, &rbv_cmap_regs->cntl); |
250 | nop(); | |
251 | ||
1da177e4 | 252 | /* tell clut which address to use. */ |
99e11ab2 | 253 | nubus_writeb(regno, &rbv_cmap_regs->addr); |
34c41d0a FT |
254 | nop(); |
255 | ||
1da177e4 | 256 | /* send one color channel at a time. */ |
99e11ab2 | 257 | nubus_writeb(red, &rbv_cmap_regs->lut); |
34c41d0a | 258 | nop(); |
99e11ab2 | 259 | nubus_writeb(green, &rbv_cmap_regs->lut); |
34c41d0a | 260 | nop(); |
99e11ab2 | 261 | nubus_writeb(blue, &rbv_cmap_regs->lut); |
34c41d0a FT |
262 | |
263 | local_irq_restore(flags); | |
1da177e4 LT |
264 | return 0; |
265 | } | |
266 | ||
34c41d0a | 267 | /* Macintosh Display Card (8*24) */ |
1da177e4 LT |
268 | static int mdc_setpalette(unsigned int regno, unsigned int red, |
269 | unsigned int green, unsigned int blue, | |
270 | struct fb_info *info) | |
271 | { | |
99e11ab2 | 272 | struct mdc_cmap_regs *cmap_regs = slot_addr; |
1da177e4 LT |
273 | unsigned long flags; |
274 | ||
275 | local_irq_save(flags); | |
34c41d0a | 276 | |
1da177e4 | 277 | /* the nop's are there to order writes. */ |
99e11ab2 | 278 | nubus_writeb(regno, &cmap_regs->addr); |
34c41d0a | 279 | nop(); |
99e11ab2 | 280 | nubus_writeb(red, &cmap_regs->lut); |
34c41d0a | 281 | nop(); |
99e11ab2 | 282 | nubus_writeb(green, &cmap_regs->lut); |
34c41d0a | 283 | nop(); |
99e11ab2 | 284 | nubus_writeb(blue, &cmap_regs->lut); |
1da177e4 LT |
285 | |
286 | local_irq_restore(flags); | |
287 | return 0; | |
288 | } | |
289 | ||
290 | /* Toby frame buffer */ | |
291 | static int toby_setpalette(unsigned int regno, unsigned int red, | |
292 | unsigned int green, unsigned int blue, | |
34c41d0a | 293 | struct fb_info *info) |
1da177e4 | 294 | { |
99e11ab2 | 295 | struct toby_cmap_regs *cmap_regs = slot_addr; |
1da177e4 | 296 | unsigned int bpp = info->var.bits_per_pixel; |
1da177e4 LT |
297 | unsigned long flags; |
298 | ||
99e11ab2 FT |
299 | red = ~red; |
300 | green = ~green; | |
301 | blue = ~blue; | |
302 | regno = (regno << (8 - bpp)) | (0xFF >> bpp); | |
303 | ||
1da177e4 | 304 | local_irq_save(flags); |
34c41d0a | 305 | |
99e11ab2 | 306 | nubus_writeb(regno, &cmap_regs->addr); |
34c41d0a | 307 | nop(); |
99e11ab2 | 308 | nubus_writeb(red, &cmap_regs->lut); |
34c41d0a | 309 | nop(); |
99e11ab2 | 310 | nubus_writeb(green, &cmap_regs->lut); |
34c41d0a | 311 | nop(); |
99e11ab2 | 312 | nubus_writeb(blue, &cmap_regs->lut); |
1da177e4 LT |
313 | |
314 | local_irq_restore(flags); | |
315 | return 0; | |
316 | } | |
317 | ||
318 | /* Jet frame buffer */ | |
319 | static int jet_setpalette(unsigned int regno, unsigned int red, | |
320 | unsigned int green, unsigned int blue, | |
321 | struct fb_info *info) | |
322 | { | |
99e11ab2 | 323 | struct jet_cmap_regs *cmap_regs = slot_addr; |
1da177e4 LT |
324 | unsigned long flags; |
325 | ||
326 | local_irq_save(flags); | |
34c41d0a FT |
327 | |
328 | nubus_writeb(regno, &cmap_regs->addr); | |
329 | nop(); | |
99e11ab2 | 330 | nubus_writeb(red, &cmap_regs->lut); |
34c41d0a | 331 | nop(); |
99e11ab2 | 332 | nubus_writeb(green, &cmap_regs->lut); |
34c41d0a | 333 | nop(); |
99e11ab2 | 334 | nubus_writeb(blue, &cmap_regs->lut); |
1da177e4 LT |
335 | |
336 | local_irq_restore(flags); | |
337 | return 0; | |
338 | } | |
339 | ||
340 | /* | |
341 | * Civic framebuffer -- Quadra AV built-in video. A chip | |
342 | * called Sebastian holds the actual color palettes, and | |
34c41d0a | 343 | * apparently, there are two different banks of 512K RAM |
1da177e4 LT |
344 | * which can act as separate framebuffers for doing video |
345 | * input and viewing the screen at the same time! The 840AV | |
34c41d0a | 346 | * Can add another 1MB RAM to give the two framebuffers |
1da177e4 | 347 | * 1MB RAM apiece. |
1da177e4 | 348 | */ |
34c41d0a FT |
349 | static int civic_setpalette(unsigned int regno, unsigned int red, |
350 | unsigned int green, unsigned int blue, | |
351 | struct fb_info *info) | |
1da177e4 | 352 | { |
1da177e4 LT |
353 | unsigned long flags; |
354 | int clut_status; | |
355 | ||
34c41d0a FT |
356 | if (info->var.bits_per_pixel > 8) |
357 | return 1; /* failsafe */ | |
1da177e4 | 358 | |
1da177e4 | 359 | local_irq_save(flags); |
1da177e4 | 360 | |
34c41d0a FT |
361 | /* Set the register address */ |
362 | nubus_writeb(regno, &civic_cmap_regs->addr); | |
363 | nop(); | |
1da177e4 LT |
364 | |
365 | /* | |
366 | * Grab a status word and do some checking; | |
367 | * Then finally write the clut! | |
368 | */ | |
369 | clut_status = nubus_readb(&civic_cmap_regs->status2); | |
370 | ||
371 | if ((clut_status & 0x0008) == 0) | |
372 | { | |
373 | #if 0 | |
374 | if ((clut_status & 0x000D) != 0) | |
375 | { | |
34c41d0a FT |
376 | nubus_writeb(0x00, &civic_cmap_regs->lut); |
377 | nop(); | |
378 | nubus_writeb(0x00, &civic_cmap_regs->lut); | |
379 | nop(); | |
1da177e4 LT |
380 | } |
381 | #endif | |
382 | ||
34c41d0a FT |
383 | nubus_writeb(red, &civic_cmap_regs->lut); |
384 | nop(); | |
385 | nubus_writeb(green, &civic_cmap_regs->lut); | |
386 | nop(); | |
387 | nubus_writeb(blue, &civic_cmap_regs->lut); | |
388 | nop(); | |
389 | nubus_writeb(0x00, &civic_cmap_regs->lut); | |
1da177e4 LT |
390 | } |
391 | else | |
392 | { | |
393 | unsigned char junk; | |
394 | ||
34c41d0a FT |
395 | junk = nubus_readb(&civic_cmap_regs->lut); |
396 | nop(); | |
397 | junk = nubus_readb(&civic_cmap_regs->lut); | |
398 | nop(); | |
399 | junk = nubus_readb(&civic_cmap_regs->lut); | |
400 | nop(); | |
401 | junk = nubus_readb(&civic_cmap_regs->lut); | |
402 | nop(); | |
1da177e4 LT |
403 | |
404 | if ((clut_status & 0x000D) != 0) | |
405 | { | |
34c41d0a FT |
406 | nubus_writeb(0x00, &civic_cmap_regs->lut); |
407 | nop(); | |
408 | nubus_writeb(0x00, &civic_cmap_regs->lut); | |
409 | nop(); | |
1da177e4 LT |
410 | } |
411 | ||
34c41d0a FT |
412 | nubus_writeb(red, &civic_cmap_regs->lut); |
413 | nop(); | |
414 | nubus_writeb(green, &civic_cmap_regs->lut); | |
415 | nop(); | |
416 | nubus_writeb(blue, &civic_cmap_regs->lut); | |
417 | nop(); | |
418 | nubus_writeb(junk, &civic_cmap_regs->lut); | |
1da177e4 LT |
419 | } |
420 | ||
421 | local_irq_restore(flags); | |
1da177e4 LT |
422 | return 0; |
423 | } | |
424 | ||
425 | /* | |
426 | * The CSC is the framebuffer on the PowerBook 190 series | |
427 | * (and the 5300 too, but that's a PowerMac). This function | |
428 | * brought to you in part by the ECSC driver for MkLinux. | |
429 | */ | |
34c41d0a FT |
430 | static int csc_setpalette(unsigned int regno, unsigned int red, |
431 | unsigned int green, unsigned int blue, | |
432 | struct fb_info *info) | |
1da177e4 | 433 | { |
99e11ab2 FT |
434 | unsigned long flags; |
435 | ||
436 | local_irq_save(flags); | |
437 | ||
438 | udelay(1); /* mklinux on PB 5300 waits for 260 ns */ | |
3839d01d | 439 | nubus_writeb(regno, &csc_cmap_regs->clut_waddr); |
99e11ab2 | 440 | nubus_writeb(red, &csc_cmap_regs->clut_data); |
3839d01d | 441 | nubus_writeb(green, &csc_cmap_regs->clut_data); |
99e11ab2 FT |
442 | nubus_writeb(blue, &csc_cmap_regs->clut_data); |
443 | ||
444 | local_irq_restore(flags); | |
1da177e4 LT |
445 | return 0; |
446 | } | |
447 | ||
448 | static int macfb_setcolreg(unsigned regno, unsigned red, unsigned green, | |
449 | unsigned blue, unsigned transp, | |
450 | struct fb_info *fb_info) | |
451 | { | |
452 | /* | |
34c41d0a FT |
453 | * Set a single color register. The values supplied are |
454 | * already rounded down to the hardware's capabilities | |
455 | * (according to the entries in the `var' structure). | |
456 | * Return non-zero for invalid regno. | |
1da177e4 LT |
457 | */ |
458 | ||
459 | if (regno >= fb_info->cmap.len) | |
460 | return 1; | |
461 | ||
24fc7223 AD |
462 | if (fb_info->var.bits_per_pixel <= 8) { |
463 | switch (fb_info->var.bits_per_pixel) { | |
464 | case 1: | |
465 | /* We shouldn't get here */ | |
466 | break; | |
467 | case 2: | |
468 | case 4: | |
469 | case 8: | |
470 | if (macfb_setpalette) | |
99e11ab2 FT |
471 | macfb_setpalette(regno, red >> 8, green >> 8, |
472 | blue >> 8, fb_info); | |
24fc7223 AD |
473 | else |
474 | return 1; | |
475 | break; | |
476 | } | |
477 | } else if (regno < 16) { | |
478 | switch (fb_info->var.bits_per_pixel) { | |
479 | case 16: | |
480 | if (fb_info->var.red.offset == 10) { | |
481 | /* 1:5:5:5 */ | |
482 | ((u32*) (fb_info->pseudo_palette))[regno] = | |
1da177e4 LT |
483 | ((red & 0xf800) >> 1) | |
484 | ((green & 0xf800) >> 6) | | |
485 | ((blue & 0xf800) >> 11) | | |
486 | ((transp != 0) << 15); | |
24fc7223 AD |
487 | } else { |
488 | /* 0:5:6:5 */ | |
489 | ((u32*) (fb_info->pseudo_palette))[regno] = | |
34c41d0a | 490 | ((red & 0xf800) >> 0) | |
1da177e4 LT |
491 | ((green & 0xfc00) >> 5) | |
492 | ((blue & 0xf800) >> 11); | |
24fc7223 AD |
493 | } |
494 | break; | |
34c41d0a FT |
495 | /* |
496 | * 24-bit colour almost doesn't exist on 68k Macs -- | |
497 | * http://support.apple.com/kb/TA28634 (Old Article: 10992) | |
498 | */ | |
24fc7223 | 499 | case 24: |
24fc7223 AD |
500 | case 32: |
501 | red >>= 8; | |
502 | green >>= 8; | |
503 | blue >>= 8; | |
504 | ((u32 *)(fb_info->pseudo_palette))[regno] = | |
34c41d0a | 505 | (red << fb_info->var.red.offset) | |
24fc7223 AD |
506 | (green << fb_info->var.green.offset) | |
507 | (blue << fb_info->var.blue.offset); | |
508 | break; | |
1da177e4 | 509 | } |
24fc7223 AD |
510 | } |
511 | ||
512 | return 0; | |
1da177e4 LT |
513 | } |
514 | ||
515 | static struct fb_ops macfb_ops = { | |
516 | .owner = THIS_MODULE, | |
517 | .fb_setcolreg = macfb_setcolreg, | |
518 | .fb_fillrect = cfb_fillrect, | |
519 | .fb_copyarea = cfb_copyarea, | |
520 | .fb_imageblit = cfb_imageblit, | |
1da177e4 LT |
521 | }; |
522 | ||
511e7483 | 523 | static void __init macfb_setup(char *options) |
1da177e4 LT |
524 | { |
525 | char *this_opt; | |
34c41d0a | 526 | |
1da177e4 LT |
527 | if (!options || !*options) |
528 | return; | |
34c41d0a | 529 | |
1da177e4 | 530 | while ((this_opt = strsep(&options, ",")) != NULL) { |
34c41d0a FT |
531 | if (!*this_opt) |
532 | continue; | |
533 | ||
534 | if (!strcmp(this_opt, "inverse")) | |
535 | inverse = 1; | |
536 | else | |
537 | if (!strcmp(this_opt, "vidtest")) | |
538 | vidtest = 1; /* enable experimental CLUT code */ | |
1da177e4 LT |
539 | } |
540 | } | |
541 | ||
164a765b AL |
542 | static void __init iounmap_macfb(void) |
543 | { | |
164a765b AL |
544 | if (dafb_cmap_regs) |
545 | iounmap(dafb_cmap_regs); | |
546 | if (v8_brazil_cmap_regs) | |
547 | iounmap(v8_brazil_cmap_regs); | |
548 | if (rbv_cmap_regs) | |
549 | iounmap(rbv_cmap_regs); | |
550 | if (civic_cmap_regs) | |
551 | iounmap(civic_cmap_regs); | |
552 | if (csc_cmap_regs) | |
553 | iounmap(csc_cmap_regs); | |
554 | } | |
555 | ||
ed1705af | 556 | static int __init macfb_init(void) |
1da177e4 LT |
557 | { |
558 | int video_cmap_len, video_is_nubus = 0; | |
559 | struct nubus_dev* ndev = NULL; | |
560 | char *option = NULL; | |
ed1705af | 561 | int err; |
1da177e4 LT |
562 | |
563 | if (fb_get_options("macfb", &option)) | |
564 | return -ENODEV; | |
565 | macfb_setup(option); | |
566 | ||
567 | if (!MACH_IS_MAC) | |
ed1705af | 568 | return -ENODEV; |
1da177e4 | 569 | |
11e8faca FT |
570 | if (mac_bi_data.id == MAC_MODEL_Q630 || |
571 | mac_bi_data.id == MAC_MODEL_P588) | |
572 | return -ENODEV; /* See valkyriefb.c */ | |
573 | ||
1da177e4 LT |
574 | macfb_defined.xres = mac_bi_data.dimensions & 0xFFFF; |
575 | macfb_defined.yres = mac_bi_data.dimensions >> 16; | |
576 | macfb_defined.bits_per_pixel = mac_bi_data.videodepth; | |
34c41d0a | 577 | |
1da177e4 | 578 | macfb_fix.line_length = mac_bi_data.videorow; |
34c41d0a | 579 | macfb_fix.smem_len = macfb_fix.line_length * macfb_defined.yres; |
1da177e4 | 580 | /* Note: physical address (since 2.1.127) */ |
34c41d0a FT |
581 | macfb_fix.smem_start = mac_bi_data.videoaddr; |
582 | ||
583 | /* | |
584 | * This is actually redundant with the initial mappings. | |
585 | * However, there are some non-obvious aspects to the way | |
586 | * those mappings are set up, so this is in fact the safest | |
587 | * way to ensure that this driver will work on every possible Mac | |
588 | */ | |
99e11ab2 FT |
589 | fb_info.screen_base = ioremap(mac_bi_data.videoaddr, |
590 | macfb_fix.smem_len); | |
591 | if (!fb_info.screen_base) | |
592 | return -ENODEV; | |
593 | ||
d9070fc4 FT |
594 | pr_info("macfb: framebuffer at 0x%08lx, mapped to 0x%p, size %dk\n", |
595 | macfb_fix.smem_start, fb_info.screen_base, | |
596 | macfb_fix.smem_len / 1024); | |
597 | pr_info("macfb: mode is %dx%dx%d, linelength=%d\n", | |
598 | macfb_defined.xres, macfb_defined.yres, | |
599 | macfb_defined.bits_per_pixel, macfb_fix.line_length); | |
34c41d0a | 600 | |
99e11ab2 | 601 | /* Fill in the available video resolution */ |
34c41d0a FT |
602 | macfb_defined.xres_virtual = macfb_defined.xres; |
603 | macfb_defined.yres_virtual = macfb_defined.yres; | |
604 | macfb_defined.height = PIXEL_TO_MM(macfb_defined.yres); | |
605 | macfb_defined.width = PIXEL_TO_MM(macfb_defined.xres); | |
1da177e4 | 606 | |
99e11ab2 | 607 | /* Some dummy values for timing to make fbset happy */ |
34c41d0a FT |
608 | macfb_defined.pixclock = 10000000 / macfb_defined.xres * |
609 | 1000 / macfb_defined.yres; | |
1da177e4 LT |
610 | macfb_defined.left_margin = (macfb_defined.xres / 8) & 0xf8; |
611 | macfb_defined.hsync_len = (macfb_defined.xres / 8) & 0xf8; | |
612 | ||
613 | switch (macfb_defined.bits_per_pixel) { | |
614 | case 1: | |
1da177e4 LT |
615 | macfb_defined.red.length = macfb_defined.bits_per_pixel; |
616 | macfb_defined.green.length = macfb_defined.bits_per_pixel; | |
617 | macfb_defined.blue.length = macfb_defined.bits_per_pixel; | |
d9070fc4 | 618 | video_cmap_len = 2; |
1da177e4 LT |
619 | macfb_fix.visual = FB_VISUAL_MONO01; |
620 | break; | |
621 | case 2: | |
622 | case 4: | |
623 | case 8: | |
624 | macfb_defined.red.length = macfb_defined.bits_per_pixel; | |
625 | macfb_defined.green.length = macfb_defined.bits_per_pixel; | |
626 | macfb_defined.blue.length = macfb_defined.bits_per_pixel; | |
627 | video_cmap_len = 1 << macfb_defined.bits_per_pixel; | |
628 | macfb_fix.visual = FB_VISUAL_PSEUDOCOLOR; | |
629 | break; | |
630 | case 16: | |
631 | macfb_defined.transp.offset = 15; | |
632 | macfb_defined.transp.length = 1; | |
633 | macfb_defined.red.offset = 10; | |
634 | macfb_defined.red.length = 5; | |
635 | macfb_defined.green.offset = 5; | |
636 | macfb_defined.green.length = 5; | |
637 | macfb_defined.blue.offset = 0; | |
638 | macfb_defined.blue.length = 5; | |
1da177e4 | 639 | video_cmap_len = 16; |
34c41d0a FT |
640 | /* |
641 | * Should actually be FB_VISUAL_DIRECTCOLOR, but this | |
642 | * works too | |
643 | */ | |
1da177e4 LT |
644 | macfb_fix.visual = FB_VISUAL_TRUECOLOR; |
645 | break; | |
646 | case 24: | |
647 | case 32: | |
1da177e4 LT |
648 | macfb_defined.red.offset = 16; |
649 | macfb_defined.red.length = 8; | |
650 | macfb_defined.green.offset = 8; | |
651 | macfb_defined.green.length = 8; | |
652 | macfb_defined.blue.offset = 0; | |
653 | macfb_defined.blue.length = 8; | |
1da177e4 LT |
654 | video_cmap_len = 16; |
655 | macfb_fix.visual = FB_VISUAL_TRUECOLOR; | |
99e11ab2 | 656 | break; |
1da177e4 | 657 | default: |
d9070fc4 | 658 | pr_err("macfb: unknown or unsupported bit depth: %d\n", |
34c41d0a | 659 | macfb_defined.bits_per_pixel); |
d9070fc4 FT |
660 | err = -EINVAL; |
661 | goto fail_unmap; | |
1da177e4 LT |
662 | } |
663 | ||
34c41d0a FT |
664 | /* |
665 | * We take a wild guess that if the video physical address is | |
666 | * in nubus slot space, that the nubus card is driving video. | |
667 | * Penguin really ought to tell us whether we are using internal | |
668 | * video or not. | |
669 | * Hopefully we only find one of them. Otherwise our NuBus | |
670 | * code is really broken :-) | |
1da177e4 | 671 | */ |
1da177e4 | 672 | |
99e11ab2 FT |
673 | while ((ndev = nubus_find_type(NUBUS_CAT_DISPLAY, |
674 | NUBUS_TYPE_VIDEO, ndev))) | |
1da177e4 | 675 | { |
99e11ab2 FT |
676 | unsigned long base = ndev->board->slot_addr; |
677 | ||
678 | if (mac_bi_data.videoaddr < base || | |
679 | mac_bi_data.videoaddr - base > 0xFFFFFF) | |
1da177e4 | 680 | continue; |
99e11ab2 | 681 | |
1da177e4 | 682 | video_is_nubus = 1; |
99e11ab2 | 683 | slot_addr = (unsigned char *)base; |
1da177e4 LT |
684 | |
685 | switch(ndev->dr_hw) { | |
686 | case NUBUS_DRHW_APPLE_MDC: | |
89c223a6 | 687 | strcpy(macfb_fix.id, "Mac Disp. Card"); |
1da177e4 LT |
688 | macfb_setpalette = mdc_setpalette; |
689 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
690 | break; | |
691 | case NUBUS_DRHW_APPLE_TFB: | |
89c223a6 | 692 | strcpy(macfb_fix.id, "Toby"); |
1da177e4 LT |
693 | macfb_setpalette = toby_setpalette; |
694 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
695 | break; | |
696 | case NUBUS_DRHW_APPLE_JET: | |
89c223a6 | 697 | strcpy(macfb_fix.id, "Jet"); |
1da177e4 LT |
698 | macfb_setpalette = jet_setpalette; |
699 | macfb_defined.activate = FB_ACTIVATE_NOW; | |
34c41d0a | 700 | break; |
1da177e4 | 701 | default: |
89c223a6 | 702 | strcpy(macfb_fix.id, "Generic NuBus"); |
1da177e4 LT |
703 | break; |
704 | } | |
705 | } | |
706 | ||
707 | /* If it's not a NuBus card, it must be internal video */ | |
1da177e4 | 708 | if (!video_is_nubus) |
34c41d0a FT |
709 | switch (mac_bi_data.id) { |
710 | /* | |
711 | * DAFB Quadras | |
712 | * Note: these first four have the v7 DAFB, which is | |
713 | * known to be rather unlike the ones used in the | |
714 | * other models | |
715 | */ | |
1da177e4 LT |
716 | case MAC_MODEL_P475: |
717 | case MAC_MODEL_P475F: | |
718 | case MAC_MODEL_P575: | |
719 | case MAC_MODEL_Q605: | |
34c41d0a | 720 | |
1da177e4 LT |
721 | case MAC_MODEL_Q800: |
722 | case MAC_MODEL_Q650: | |
723 | case MAC_MODEL_Q610: | |
724 | case MAC_MODEL_C650: | |
725 | case MAC_MODEL_C610: | |
726 | case MAC_MODEL_Q700: | |
727 | case MAC_MODEL_Q900: | |
728 | case MAC_MODEL_Q950: | |
89c223a6 | 729 | strcpy(macfb_fix.id, "DAFB"); |
1da177e4 | 730 | macfb_setpalette = dafb_setpalette; |
1da177e4 | 731 | dafb_cmap_regs = ioremap(DAFB_BASE, 0x1000); |
d9070fc4 | 732 | macfb_defined.activate = FB_ACTIVATE_NOW; |
1da177e4 LT |
733 | break; |
734 | ||
34c41d0a FT |
735 | /* |
736 | * LC II uses the V8 framebuffer | |
737 | */ | |
1da177e4 | 738 | case MAC_MODEL_LCII: |
89c223a6 | 739 | strcpy(macfb_fix.id, "V8"); |
1da177e4 | 740 | macfb_setpalette = v8_brazil_setpalette; |
1da177e4 | 741 | v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000); |
d9070fc4 | 742 | macfb_defined.activate = FB_ACTIVATE_NOW; |
1da177e4 | 743 | break; |
34c41d0a FT |
744 | |
745 | /* | |
746 | * IIvi, IIvx use the "Brazil" framebuffer (which is | |
747 | * very much like the V8, it seems, and probably uses | |
748 | * the same DAC) | |
749 | */ | |
1da177e4 LT |
750 | case MAC_MODEL_IIVI: |
751 | case MAC_MODEL_IIVX: | |
752 | case MAC_MODEL_P600: | |
89c223a6 | 753 | strcpy(macfb_fix.id, "Brazil"); |
1da177e4 | 754 | macfb_setpalette = v8_brazil_setpalette; |
1da177e4 | 755 | v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000); |
d9070fc4 | 756 | macfb_defined.activate = FB_ACTIVATE_NOW; |
1da177e4 | 757 | break; |
34c41d0a FT |
758 | |
759 | /* | |
760 | * LC III (and friends) use the Sonora framebuffer | |
761 | * Incidentally this is also used in the non-AV models | |
762 | * of the x100 PowerMacs | |
763 | * These do in fact seem to use the same DAC interface | |
764 | * as the LC II. | |
765 | */ | |
1da177e4 LT |
766 | case MAC_MODEL_LCIII: |
767 | case MAC_MODEL_P520: | |
768 | case MAC_MODEL_P550: | |
769 | case MAC_MODEL_P460: | |
89c223a6 | 770 | strcpy(macfb_fix.id, "Sonora"); |
d9070fc4 | 771 | macfb_setpalette = v8_brazil_setpalette; |
1da177e4 | 772 | v8_brazil_cmap_regs = ioremap(DAC_BASE, 0x1000); |
d9070fc4 | 773 | macfb_defined.activate = FB_ACTIVATE_NOW; |
1da177e4 LT |
774 | break; |
775 | ||
34c41d0a FT |
776 | /* |
777 | * IIci and IIsi use the infamous RBV chip | |
778 | * (the IIsi is just a rebadged and crippled | |
779 | * IIci in a different case, BTW) | |
780 | */ | |
1da177e4 LT |
781 | case MAC_MODEL_IICI: |
782 | case MAC_MODEL_IISI: | |
89c223a6 | 783 | strcpy(macfb_fix.id, "RBV"); |
d9070fc4 | 784 | macfb_setpalette = rbv_setpalette; |
1da177e4 | 785 | rbv_cmap_regs = ioremap(DAC_BASE, 0x1000); |
d9070fc4 | 786 | macfb_defined.activate = FB_ACTIVATE_NOW; |
1da177e4 LT |
787 | break; |
788 | ||
34c41d0a FT |
789 | /* |
790 | * AVs use the Civic framebuffer | |
791 | */ | |
1da177e4 LT |
792 | case MAC_MODEL_Q840: |
793 | case MAC_MODEL_C660: | |
89c223a6 | 794 | strcpy(macfb_fix.id, "Civic"); |
d9070fc4 | 795 | macfb_setpalette = civic_setpalette; |
1da177e4 | 796 | civic_cmap_regs = ioremap(CIVIC_BASE, 0x1000); |
d9070fc4 | 797 | macfb_defined.activate = FB_ACTIVATE_NOW; |
1da177e4 LT |
798 | break; |
799 | ||
800 | ||
34c41d0a FT |
801 | /* |
802 | * Assorted weirdos | |
803 | * We think this may be like the LC II | |
804 | */ | |
1da177e4 | 805 | case MAC_MODEL_LC: |
d9070fc4 | 806 | strcpy(macfb_fix.id, "LC"); |
1da177e4 LT |
807 | if (vidtest) { |
808 | macfb_setpalette = v8_brazil_setpalette; | |
1da177e4 LT |
809 | v8_brazil_cmap_regs = |
810 | ioremap(DAC_BASE, 0x1000); | |
d9070fc4 | 811 | macfb_defined.activate = FB_ACTIVATE_NOW; |
1da177e4 | 812 | } |
1da177e4 | 813 | break; |
34c41d0a FT |
814 | |
815 | /* | |
816 | * We think this may be like the LC II | |
817 | */ | |
1da177e4 | 818 | case MAC_MODEL_CCL: |
d9070fc4 | 819 | strcpy(macfb_fix.id, "Color Classic"); |
1da177e4 LT |
820 | if (vidtest) { |
821 | macfb_setpalette = v8_brazil_setpalette; | |
1da177e4 LT |
822 | v8_brazil_cmap_regs = |
823 | ioremap(DAC_BASE, 0x1000); | |
d9070fc4 | 824 | macfb_defined.activate = FB_ACTIVATE_NOW; |
1da177e4 | 825 | } |
1da177e4 LT |
826 | break; |
827 | ||
34c41d0a FT |
828 | /* |
829 | * And we *do* mean "weirdos" | |
830 | */ | |
1da177e4 | 831 | case MAC_MODEL_TV: |
89c223a6 | 832 | strcpy(macfb_fix.id, "Mac TV"); |
1da177e4 LT |
833 | break; |
834 | ||
34c41d0a FT |
835 | /* |
836 | * These don't have colour, so no need to worry | |
837 | */ | |
1da177e4 LT |
838 | case MAC_MODEL_SE30: |
839 | case MAC_MODEL_CLII: | |
89c223a6 | 840 | strcpy(macfb_fix.id, "Monochrome"); |
1da177e4 LT |
841 | break; |
842 | ||
34c41d0a FT |
843 | /* |
844 | * Powerbooks are particularly difficult. Many of | |
845 | * them have separate framebuffers for external and | |
846 | * internal video, which is admittedly pretty cool, | |
847 | * but will be a bit of a headache to support here. | |
848 | * Also, many of them are grayscale, and we don't | |
849 | * really support that. | |
850 | */ | |
1da177e4 | 851 | |
99e11ab2 FT |
852 | /* |
853 | * Slot 0 ROM says TIM. No external video. B&W. | |
854 | */ | |
1da177e4 LT |
855 | case MAC_MODEL_PB140: |
856 | case MAC_MODEL_PB145: | |
857 | case MAC_MODEL_PB170: | |
89c223a6 | 858 | strcpy(macfb_fix.id, "DDC"); |
1da177e4 LT |
859 | break; |
860 | ||
34c41d0a FT |
861 | /* |
862 | * Internal is GSC, External (if present) is ViSC | |
863 | */ | |
1da177e4 LT |
864 | case MAC_MODEL_PB150: /* no external video */ |
865 | case MAC_MODEL_PB160: | |
866 | case MAC_MODEL_PB165: | |
867 | case MAC_MODEL_PB180: | |
868 | case MAC_MODEL_PB210: | |
869 | case MAC_MODEL_PB230: | |
89c223a6 | 870 | strcpy(macfb_fix.id, "GSC"); |
1da177e4 LT |
871 | break; |
872 | ||
34c41d0a FT |
873 | /* |
874 | * Internal is TIM, External is ViSC | |
875 | */ | |
1da177e4 LT |
876 | case MAC_MODEL_PB165C: |
877 | case MAC_MODEL_PB180C: | |
89c223a6 | 878 | strcpy(macfb_fix.id, "TIM"); |
1da177e4 LT |
879 | break; |
880 | ||
34c41d0a FT |
881 | /* |
882 | * Internal is CSC, External is Keystone+Ariel. | |
883 | */ | |
1da177e4 LT |
884 | case MAC_MODEL_PB190: /* external video is optional */ |
885 | case MAC_MODEL_PB520: | |
886 | case MAC_MODEL_PB250: | |
887 | case MAC_MODEL_PB270C: | |
888 | case MAC_MODEL_PB280: | |
889 | case MAC_MODEL_PB280C: | |
89c223a6 | 890 | strcpy(macfb_fix.id, "CSC"); |
d9070fc4 | 891 | macfb_setpalette = csc_setpalette; |
1da177e4 | 892 | csc_cmap_regs = ioremap(CSC_BASE, 0x1000); |
d9070fc4 | 893 | macfb_defined.activate = FB_ACTIVATE_NOW; |
1da177e4 | 894 | break; |
34c41d0a | 895 | |
1da177e4 | 896 | default: |
89c223a6 | 897 | strcpy(macfb_fix.id, "Unknown"); |
1da177e4 LT |
898 | break; |
899 | } | |
900 | ||
901 | fb_info.fbops = &macfb_ops; | |
902 | fb_info.var = macfb_defined; | |
903 | fb_info.fix = macfb_fix; | |
904 | fb_info.pseudo_palette = pseudo_palette; | |
905 | fb_info.flags = FBINFO_DEFAULT; | |
906 | ||
89c223a6 FT |
907 | err = fb_alloc_cmap(&fb_info.cmap, video_cmap_len, 0); |
908 | if (err) | |
909 | goto fail_unmap; | |
34c41d0a | 910 | |
ed1705af | 911 | err = register_framebuffer(&fb_info); |
89c223a6 FT |
912 | if (err) |
913 | goto fail_dealloc; | |
914 | ||
31b6780c | 915 | fb_info(&fb_info, "%s frame buffer device\n", fb_info.fix.id); |
d9070fc4 | 916 | |
89c223a6 FT |
917 | return 0; |
918 | ||
919 | fail_dealloc: | |
920 | fb_dealloc_cmap(&fb_info.cmap); | |
921 | fail_unmap: | |
922 | iounmap(fb_info.screen_base); | |
923 | iounmap_macfb(); | |
ed1705af | 924 | return err; |
1da177e4 LT |
925 | } |
926 | ||
927 | module_init(macfb_init); | |
928 | MODULE_LICENSE("GPL"); |