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