1 /* 2 * platinumfb.c -- frame buffer device for the PowerMac 'platinum' display 3 * 4 * Copyright (C) 1998 Franz Sirl 5 * 6 * Frame buffer structure from: 7 * drivers/video/controlfb.c -- frame buffer device for 8 * Apple 'control' display chip. 9 * Copyright (C) 1998 Dan Jacobowitz 10 * 11 * Hardware information from: 12 * platinum.c: Console support for PowerMac "platinum" display adaptor. 13 * Copyright (C) 1996 Paul Mackerras and Mark Abene 14 * 15 * This file is subject to the terms and conditions of the GNU General Public 16 * License. See the file COPYING in the main directory of this archive for 17 * more details. 18 */ 19 20 #undef DEBUG 21 22 #include <linux/module.h> 23 #include <linux/kernel.h> 24 #include <linux/errno.h> 25 #include <linux/string.h> 26 #include <linux/mm.h> 27 #include <linux/vmalloc.h> 28 #include <linux/delay.h> 29 #include <linux/interrupt.h> 30 #include <linux/fb.h> 31 #include <linux/init.h> 32 #include <linux/nvram.h> 33 #include <linux/of_device.h> 34 #include <linux/of_platform.h> 35 #include <asm/prom.h> 36 37 #include "macmodes.h" 38 #include "platinumfb.h" 39 40 static int default_vmode = VMODE_NVRAM; 41 static int default_cmode = CMODE_NVRAM; 42 43 struct fb_info_platinum { 44 struct fb_info *info; 45 46 int vmode, cmode; 47 int xres, yres; 48 int vxres, vyres; 49 int xoffset, yoffset; 50 51 struct { 52 __u8 red, green, blue; 53 } palette[256]; 54 u32 pseudo_palette[16]; 55 56 volatile struct cmap_regs __iomem *cmap_regs; 57 unsigned long cmap_regs_phys; 58 59 volatile struct platinum_regs __iomem *platinum_regs; 60 unsigned long platinum_regs_phys; 61 62 __u8 __iomem *frame_buffer; 63 volatile __u8 __iomem *base_frame_buffer; 64 unsigned long frame_buffer_phys; 65 66 unsigned long total_vram; 67 int clktype; 68 int dactype; 69 70 struct resource rsrc_fb, rsrc_reg; 71 }; 72 73 /* 74 * Frame buffer device API 75 */ 76 77 static int platinumfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, 78 u_int transp, struct fb_info *info); 79 static int platinumfb_blank(int blank_mode, struct fb_info *info); 80 static int platinumfb_set_par (struct fb_info *info); 81 static int platinumfb_check_var (struct fb_var_screeninfo *var, struct fb_info *info); 82 83 /* 84 * internal functions 85 */ 86 87 static inline int platinum_vram_reqd(int video_mode, int color_mode); 88 static int read_platinum_sense(struct fb_info_platinum *pinfo); 89 static void set_platinum_clock(struct fb_info_platinum *pinfo); 90 static void platinum_set_hardware(struct fb_info_platinum *pinfo); 91 static int platinum_var_to_par(struct fb_var_screeninfo *var, 92 struct fb_info_platinum *pinfo, 93 int check_only); 94 95 /* 96 * Interface used by the world 97 */ 98 99 static struct fb_ops platinumfb_ops = { 100 .owner = THIS_MODULE, 101 .fb_check_var = platinumfb_check_var, 102 .fb_set_par = platinumfb_set_par, 103 .fb_setcolreg = platinumfb_setcolreg, 104 .fb_blank = platinumfb_blank, 105 .fb_fillrect = cfb_fillrect, 106 .fb_copyarea = cfb_copyarea, 107 .fb_imageblit = cfb_imageblit, 108 }; 109 110 /* 111 * Checks a var structure 112 */ 113 static int platinumfb_check_var (struct fb_var_screeninfo *var, struct fb_info *info) 114 { 115 return platinum_var_to_par(var, info->par, 1); 116 } 117 118 /* 119 * Applies current var to display 120 */ 121 static int platinumfb_set_par (struct fb_info *info) 122 { 123 struct fb_info_platinum *pinfo = info->par; 124 struct platinum_regvals *init; 125 int err, offset = 0x20; 126 127 if((err = platinum_var_to_par(&info->var, pinfo, 0))) { 128 printk (KERN_ERR "platinumfb_set_par: error calling" 129 " platinum_var_to_par: %d.\n", err); 130 return err; 131 } 132 133 platinum_set_hardware(pinfo); 134 135 init = platinum_reg_init[pinfo->vmode-1]; 136 137 if ((pinfo->vmode == VMODE_832_624_75) && (pinfo->cmode > CMODE_8)) 138 offset = 0x10; 139 140 info->screen_base = pinfo->frame_buffer + init->fb_offset + offset; 141 mutex_lock(&info->mm_lock); 142 info->fix.smem_start = (pinfo->frame_buffer_phys) + init->fb_offset + offset; 143 mutex_unlock(&info->mm_lock); 144 info->fix.visual = (pinfo->cmode == CMODE_8) ? 145 FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR; 146 info->fix.line_length = vmode_attrs[pinfo->vmode-1].hres * (1<<pinfo->cmode) 147 + offset; 148 printk("line_length: %x\n", info->fix.line_length); 149 return 0; 150 } 151 152 static int platinumfb_blank(int blank, struct fb_info *fb) 153 { 154 /* 155 * Blank the screen if blank_mode != 0, else unblank. If blank == NULL 156 * then the caller blanks by setting the CLUT (Color Look Up Table) to all 157 * black. Return 0 if blanking succeeded, != 0 if un-/blanking failed due 158 * to e.g. a video mode which doesn't support it. Implements VESA suspend 159 * and powerdown modes on hardware that supports disabling hsync/vsync: 160 * blank_mode == 2: suspend vsync 161 * blank_mode == 3: suspend hsync 162 * blank_mode == 4: powerdown 163 */ 164 /* [danj] I think there's something fishy about those constants... */ 165 /* 166 struct fb_info_platinum *info = (struct fb_info_platinum *) fb; 167 int ctrl; 168 169 ctrl = le32_to_cpup(&info->platinum_regs->ctrl.r) | 0x33; 170 if (blank) 171 --blank_mode; 172 if (blank & VESA_VSYNC_SUSPEND) 173 ctrl &= ~3; 174 if (blank & VESA_HSYNC_SUSPEND) 175 ctrl &= ~0x30; 176 out_le32(&info->platinum_regs->ctrl.r, ctrl); 177 */ 178 /* TODO: Figure out how the heck to powerdown this thing! */ 179 return 0; 180 } 181 182 static int platinumfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, 183 u_int transp, struct fb_info *info) 184 { 185 struct fb_info_platinum *pinfo = info->par; 186 volatile struct cmap_regs __iomem *cmap_regs = pinfo->cmap_regs; 187 188 if (regno > 255) 189 return 1; 190 191 red >>= 8; 192 green >>= 8; 193 blue >>= 8; 194 195 pinfo->palette[regno].red = red; 196 pinfo->palette[regno].green = green; 197 pinfo->palette[regno].blue = blue; 198 199 out_8(&cmap_regs->addr, regno); /* tell clut what addr to fill */ 200 out_8(&cmap_regs->lut, red); /* send one color channel at */ 201 out_8(&cmap_regs->lut, green); /* a time... */ 202 out_8(&cmap_regs->lut, blue); 203 204 if (regno < 16) { 205 int i; 206 u32 *pal = info->pseudo_palette; 207 switch (pinfo->cmode) { 208 case CMODE_16: 209 pal[regno] = (regno << 10) | (regno << 5) | regno; 210 break; 211 case CMODE_32: 212 i = (regno << 8) | regno; 213 pal[regno] = (i << 16) | i; 214 break; 215 } 216 } 217 218 return 0; 219 } 220 221 static inline int platinum_vram_reqd(int video_mode, int color_mode) 222 { 223 int baseval = vmode_attrs[video_mode-1].hres * (1<<color_mode); 224 225 if ((video_mode == VMODE_832_624_75) && (color_mode > CMODE_8)) 226 baseval += 0x10; 227 else 228 baseval += 0x20; 229 230 return vmode_attrs[video_mode-1].vres * baseval + 0x1000; 231 } 232 233 #define STORE_D2(a, d) { \ 234 out_8(&cmap_regs->addr, (a+32)); \ 235 out_8(&cmap_regs->d2, (d)); \ 236 } 237 238 static void set_platinum_clock(struct fb_info_platinum *pinfo) 239 { 240 volatile struct cmap_regs __iomem *cmap_regs = pinfo->cmap_regs; 241 struct platinum_regvals *init; 242 243 init = platinum_reg_init[pinfo->vmode-1]; 244 245 STORE_D2(6, 0xc6); 246 out_8(&cmap_regs->addr,3+32); 247 248 if (in_8(&cmap_regs->d2) == 2) { 249 STORE_D2(7, init->clock_params[pinfo->clktype][0]); 250 STORE_D2(8, init->clock_params[pinfo->clktype][1]); 251 STORE_D2(3, 3); 252 } else { 253 STORE_D2(4, init->clock_params[pinfo->clktype][0]); 254 STORE_D2(5, init->clock_params[pinfo->clktype][1]); 255 STORE_D2(3, 2); 256 } 257 258 __delay(5000); 259 STORE_D2(9, 0xa6); 260 } 261 262 263 /* Now how about actually saying, Make it so! */ 264 /* Some things in here probably don't need to be done each time. */ 265 static void platinum_set_hardware(struct fb_info_platinum *pinfo) 266 { 267 volatile struct platinum_regs __iomem *platinum_regs = pinfo->platinum_regs; 268 volatile struct cmap_regs __iomem *cmap_regs = pinfo->cmap_regs; 269 struct platinum_regvals *init; 270 int i; 271 int vmode, cmode; 272 273 vmode = pinfo->vmode; 274 cmode = pinfo->cmode; 275 276 init = platinum_reg_init[vmode - 1]; 277 278 /* Initialize display timing registers */ 279 out_be32(&platinum_regs->reg[24].r, 7); /* turn display off */ 280 281 for (i = 0; i < 26; ++i) 282 out_be32(&platinum_regs->reg[i+32].r, init->regs[i]); 283 284 out_be32(&platinum_regs->reg[26+32].r, (pinfo->total_vram == 0x100000 ? 285 init->offset[cmode] + 4 - cmode : 286 init->offset[cmode])); 287 out_be32(&platinum_regs->reg[16].r, (unsigned) pinfo->frame_buffer_phys+init->fb_offset+0x10); 288 out_be32(&platinum_regs->reg[18].r, init->pitch[cmode]); 289 out_be32(&platinum_regs->reg[19].r, (pinfo->total_vram == 0x100000 ? 290 init->mode[cmode+1] : 291 init->mode[cmode])); 292 out_be32(&platinum_regs->reg[20].r, (pinfo->total_vram == 0x100000 ? 0x11 : 0x1011)); 293 out_be32(&platinum_regs->reg[21].r, 0x100); 294 out_be32(&platinum_regs->reg[22].r, 1); 295 out_be32(&platinum_regs->reg[23].r, 1); 296 out_be32(&platinum_regs->reg[26].r, 0xc00); 297 out_be32(&platinum_regs->reg[27].r, 0x235); 298 /* out_be32(&platinum_regs->reg[27].r, 0x2aa); */ 299 300 STORE_D2(0, (pinfo->total_vram == 0x100000 ? 301 init->dacula_ctrl[cmode] & 0xf : 302 init->dacula_ctrl[cmode])); 303 STORE_D2(1, 4); 304 STORE_D2(2, 0); 305 306 set_platinum_clock(pinfo); 307 308 out_be32(&platinum_regs->reg[24].r, 0); /* turn display on */ 309 } 310 311 /* 312 * Set misc info vars for this driver 313 */ 314 static void platinum_init_info(struct fb_info *info, 315 struct fb_info_platinum *pinfo) 316 { 317 /* Fill fb_info */ 318 info->fbops = &platinumfb_ops; 319 info->pseudo_palette = pinfo->pseudo_palette; 320 info->flags = FBINFO_DEFAULT; 321 info->screen_base = pinfo->frame_buffer + 0x20; 322 323 fb_alloc_cmap(&info->cmap, 256, 0); 324 325 /* Fill fix common fields */ 326 strcpy(info->fix.id, "platinum"); 327 info->fix.mmio_start = pinfo->platinum_regs_phys; 328 info->fix.mmio_len = 0x1000; 329 info->fix.type = FB_TYPE_PACKED_PIXELS; 330 info->fix.smem_start = pinfo->frame_buffer_phys + 0x20; /* will be updated later */ 331 info->fix.smem_len = pinfo->total_vram - 0x20; 332 info->fix.ywrapstep = 0; 333 info->fix.xpanstep = 0; 334 info->fix.ypanstep = 0; 335 info->fix.type_aux = 0; 336 info->fix.accel = FB_ACCEL_NONE; 337 } 338 339 340 static int platinum_init_fb(struct fb_info *info) 341 { 342 struct fb_info_platinum *pinfo = info->par; 343 struct fb_var_screeninfo var; 344 int sense, rc; 345 346 sense = read_platinum_sense(pinfo); 347 printk(KERN_INFO "platinumfb: Monitor sense value = 0x%x, ", sense); 348 if (default_vmode == VMODE_NVRAM) { 349 #ifdef CONFIG_NVRAM 350 default_vmode = nvram_read_byte(NV_VMODE); 351 if (default_vmode <= 0 || default_vmode > VMODE_MAX || 352 !platinum_reg_init[default_vmode-1]) 353 #endif 354 default_vmode = VMODE_CHOOSE; 355 } 356 if (default_vmode == VMODE_CHOOSE) { 357 default_vmode = mac_map_monitor_sense(sense); 358 } 359 if (default_vmode <= 0 || default_vmode > VMODE_MAX) 360 default_vmode = VMODE_640_480_60; 361 #ifdef CONFIG_NVRAM 362 if (default_cmode == CMODE_NVRAM) 363 default_cmode = nvram_read_byte(NV_CMODE); 364 #endif 365 if (default_cmode < CMODE_8 || default_cmode > CMODE_32) 366 default_cmode = CMODE_8; 367 /* 368 * Reduce the pixel size if we don't have enough VRAM. 369 */ 370 while(default_cmode > CMODE_8 && 371 platinum_vram_reqd(default_vmode, default_cmode) > pinfo->total_vram) 372 default_cmode--; 373 374 printk("platinumfb: Using video mode %d and color mode %d.\n", default_vmode, default_cmode); 375 376 /* Setup default var */ 377 if (mac_vmode_to_var(default_vmode, default_cmode, &var) < 0) { 378 /* This shouldn't happen! */ 379 printk("mac_vmode_to_var(%d, %d,) failed\n", default_vmode, default_cmode); 380 try_again: 381 default_vmode = VMODE_640_480_60; 382 default_cmode = CMODE_8; 383 if (mac_vmode_to_var(default_vmode, default_cmode, &var) < 0) { 384 printk(KERN_ERR "platinumfb: mac_vmode_to_var() failed\n"); 385 return -ENXIO; 386 } 387 } 388 389 /* Initialize info structure */ 390 platinum_init_info(info, pinfo); 391 392 /* Apply default var */ 393 info->var = var; 394 var.activate = FB_ACTIVATE_NOW; 395 rc = fb_set_var(info, &var); 396 if (rc && (default_vmode != VMODE_640_480_60 || default_cmode != CMODE_8)) 397 goto try_again; 398 399 /* Register with fbdev layer */ 400 rc = register_framebuffer(info); 401 if (rc < 0) 402 return rc; 403 404 fb_info(info, "Apple Platinum frame buffer device\n"); 405 406 return 0; 407 } 408 409 /* 410 * Get the monitor sense value. 411 * Note that this can be called before calibrate_delay, 412 * so we can't use udelay. 413 */ 414 static int read_platinum_sense(struct fb_info_platinum *info) 415 { 416 volatile struct platinum_regs __iomem *platinum_regs = info->platinum_regs; 417 int sense; 418 419 out_be32(&platinum_regs->reg[23].r, 7); /* turn off drivers */ 420 __delay(2000); 421 sense = (~in_be32(&platinum_regs->reg[23].r) & 7) << 8; 422 423 /* drive each sense line low in turn and collect the other 2 */ 424 out_be32(&platinum_regs->reg[23].r, 3); /* drive A low */ 425 __delay(2000); 426 sense |= (~in_be32(&platinum_regs->reg[23].r) & 3) << 4; 427 out_be32(&platinum_regs->reg[23].r, 5); /* drive B low */ 428 __delay(2000); 429 sense |= (~in_be32(&platinum_regs->reg[23].r) & 4) << 1; 430 sense |= (~in_be32(&platinum_regs->reg[23].r) & 1) << 2; 431 out_be32(&platinum_regs->reg[23].r, 6); /* drive C low */ 432 __delay(2000); 433 sense |= (~in_be32(&platinum_regs->reg[23].r) & 6) >> 1; 434 435 out_be32(&platinum_regs->reg[23].r, 7); /* turn off drivers */ 436 437 return sense; 438 } 439 440 /* 441 * This routine takes a user-supplied var, and picks the best vmode/cmode from it. 442 * It also updates the var structure to the actual mode data obtained 443 */ 444 static int platinum_var_to_par(struct fb_var_screeninfo *var, 445 struct fb_info_platinum *pinfo, 446 int check_only) 447 { 448 int vmode, cmode; 449 450 if (mac_var_to_vmode(var, &vmode, &cmode) != 0) { 451 printk(KERN_ERR "platinum_var_to_par: mac_var_to_vmode unsuccessful.\n"); 452 printk(KERN_ERR "platinum_var_to_par: var->xres = %d\n", var->xres); 453 printk(KERN_ERR "platinum_var_to_par: var->yres = %d\n", var->yres); 454 printk(KERN_ERR "platinum_var_to_par: var->xres_virtual = %d\n", var->xres_virtual); 455 printk(KERN_ERR "platinum_var_to_par: var->yres_virtual = %d\n", var->yres_virtual); 456 printk(KERN_ERR "platinum_var_to_par: var->bits_per_pixel = %d\n", var->bits_per_pixel); 457 printk(KERN_ERR "platinum_var_to_par: var->pixclock = %d\n", var->pixclock); 458 printk(KERN_ERR "platinum_var_to_par: var->vmode = %d\n", var->vmode); 459 return -EINVAL; 460 } 461 462 if (!platinum_reg_init[vmode-1]) { 463 printk(KERN_ERR "platinum_var_to_par, vmode %d not valid.\n", vmode); 464 return -EINVAL; 465 } 466 467 if (platinum_vram_reqd(vmode, cmode) > pinfo->total_vram) { 468 printk(KERN_ERR "platinum_var_to_par, not enough ram for vmode %d, cmode %d.\n", vmode, cmode); 469 return -EINVAL; 470 } 471 472 if (mac_vmode_to_var(vmode, cmode, var)) 473 return -EINVAL; 474 475 if (check_only) 476 return 0; 477 478 pinfo->vmode = vmode; 479 pinfo->cmode = cmode; 480 pinfo->xres = vmode_attrs[vmode-1].hres; 481 pinfo->yres = vmode_attrs[vmode-1].vres; 482 pinfo->xoffset = 0; 483 pinfo->yoffset = 0; 484 pinfo->vxres = pinfo->xres; 485 pinfo->vyres = pinfo->yres; 486 487 return 0; 488 } 489 490 491 /* 492 * Parse user specified options (`video=platinumfb:') 493 */ 494 static int __init platinumfb_setup(char *options) 495 { 496 char *this_opt; 497 498 if (!options || !*options) 499 return 0; 500 501 while ((this_opt = strsep(&options, ",")) != NULL) { 502 if (!strncmp(this_opt, "vmode:", 6)) { 503 int vmode = simple_strtoul(this_opt+6, NULL, 0); 504 if (vmode > 0 && vmode <= VMODE_MAX) 505 default_vmode = vmode; 506 } else if (!strncmp(this_opt, "cmode:", 6)) { 507 int depth = simple_strtoul(this_opt+6, NULL, 0); 508 switch (depth) { 509 case 0: 510 case 8: 511 default_cmode = CMODE_8; 512 break; 513 case 15: 514 case 16: 515 default_cmode = CMODE_16; 516 break; 517 case 24: 518 case 32: 519 default_cmode = CMODE_32; 520 break; 521 } 522 } 523 } 524 return 0; 525 } 526 527 #ifdef __powerpc__ 528 #define invalidate_cache(addr) \ 529 asm volatile("eieio; dcbf 0,%1" \ 530 : "=m" (*(addr)) : "r" (addr) : "memory"); 531 #else 532 #define invalidate_cache(addr) 533 #endif 534 535 static int platinumfb_probe(struct platform_device* odev) 536 { 537 struct device_node *dp = odev->dev.of_node; 538 struct fb_info *info; 539 struct fb_info_platinum *pinfo; 540 volatile __u8 *fbuffer; 541 int bank0, bank1, bank2, bank3, rc; 542 543 dev_info(&odev->dev, "Found Apple Platinum video hardware\n"); 544 545 info = framebuffer_alloc(sizeof(*pinfo), &odev->dev); 546 if (info == NULL) { 547 dev_err(&odev->dev, "Failed to allocate fbdev !\n"); 548 return -ENOMEM; 549 } 550 pinfo = info->par; 551 552 if (of_address_to_resource(dp, 0, &pinfo->rsrc_reg) || 553 of_address_to_resource(dp, 1, &pinfo->rsrc_fb)) { 554 dev_err(&odev->dev, "Can't get resources\n"); 555 framebuffer_release(info); 556 return -ENXIO; 557 } 558 dev_dbg(&odev->dev, " registers : 0x%llx...0x%llx\n", 559 (unsigned long long)pinfo->rsrc_reg.start, 560 (unsigned long long)pinfo->rsrc_reg.end); 561 dev_dbg(&odev->dev, " framebuffer: 0x%llx...0x%llx\n", 562 (unsigned long long)pinfo->rsrc_fb.start, 563 (unsigned long long)pinfo->rsrc_fb.end); 564 565 /* Do not try to request register space, they overlap with the 566 * northbridge and that can fail. Only request framebuffer 567 */ 568 if (!request_mem_region(pinfo->rsrc_fb.start, 569 resource_size(&pinfo->rsrc_fb), 570 "platinumfb framebuffer")) { 571 printk(KERN_ERR "platinumfb: Can't request framebuffer !\n"); 572 framebuffer_release(info); 573 return -ENXIO; 574 } 575 576 /* frame buffer - map only 4MB */ 577 pinfo->frame_buffer_phys = pinfo->rsrc_fb.start; 578 pinfo->frame_buffer = ioremap_wt(pinfo->rsrc_fb.start, 0x400000); 579 pinfo->base_frame_buffer = pinfo->frame_buffer; 580 581 /* registers */ 582 pinfo->platinum_regs_phys = pinfo->rsrc_reg.start; 583 pinfo->platinum_regs = ioremap(pinfo->rsrc_reg.start, 0x1000); 584 585 pinfo->cmap_regs_phys = 0xf301b000; /* XXX not in prom? */ 586 request_mem_region(pinfo->cmap_regs_phys, 0x1000, "platinumfb cmap"); 587 pinfo->cmap_regs = ioremap(pinfo->cmap_regs_phys, 0x1000); 588 589 /* Grok total video ram */ 590 out_be32(&pinfo->platinum_regs->reg[16].r, (unsigned)pinfo->frame_buffer_phys); 591 out_be32(&pinfo->platinum_regs->reg[20].r, 0x1011); /* select max vram */ 592 out_be32(&pinfo->platinum_regs->reg[24].r, 0); /* switch in vram */ 593 594 fbuffer = pinfo->base_frame_buffer; 595 fbuffer[0x100000] = 0x34; 596 fbuffer[0x100008] = 0x0; 597 invalidate_cache(&fbuffer[0x100000]); 598 fbuffer[0x200000] = 0x56; 599 fbuffer[0x200008] = 0x0; 600 invalidate_cache(&fbuffer[0x200000]); 601 fbuffer[0x300000] = 0x78; 602 fbuffer[0x300008] = 0x0; 603 invalidate_cache(&fbuffer[0x300000]); 604 bank0 = 1; /* builtin 1MB vram, always there */ 605 bank1 = fbuffer[0x100000] == 0x34; 606 bank2 = fbuffer[0x200000] == 0x56; 607 bank3 = fbuffer[0x300000] == 0x78; 608 pinfo->total_vram = (bank0 + bank1 + bank2 + bank3) * 0x100000; 609 printk(KERN_INFO "platinumfb: Total VRAM = %dMB (%d%d%d%d)\n", 610 (unsigned int) (pinfo->total_vram / 1024 / 1024), 611 bank3, bank2, bank1, bank0); 612 613 /* 614 * Try to determine whether we have an old or a new DACula. 615 */ 616 out_8(&pinfo->cmap_regs->addr, 0x40); 617 pinfo->dactype = in_8(&pinfo->cmap_regs->d2); 618 switch (pinfo->dactype) { 619 case 0x3c: 620 pinfo->clktype = 1; 621 printk(KERN_INFO "platinumfb: DACula type 0x3c\n"); 622 break; 623 case 0x84: 624 pinfo->clktype = 0; 625 printk(KERN_INFO "platinumfb: DACula type 0x84\n"); 626 break; 627 default: 628 pinfo->clktype = 0; 629 printk(KERN_INFO "platinumfb: Unknown DACula type: %x\n", pinfo->dactype); 630 break; 631 } 632 dev_set_drvdata(&odev->dev, info); 633 634 rc = platinum_init_fb(info); 635 if (rc != 0) { 636 iounmap(pinfo->frame_buffer); 637 iounmap(pinfo->platinum_regs); 638 iounmap(pinfo->cmap_regs); 639 framebuffer_release(info); 640 } 641 642 return rc; 643 } 644 645 static int platinumfb_remove(struct platform_device* odev) 646 { 647 struct fb_info *info = dev_get_drvdata(&odev->dev); 648 struct fb_info_platinum *pinfo = info->par; 649 650 unregister_framebuffer (info); 651 652 /* Unmap frame buffer and registers */ 653 iounmap(pinfo->frame_buffer); 654 iounmap(pinfo->platinum_regs); 655 iounmap(pinfo->cmap_regs); 656 657 release_mem_region(pinfo->rsrc_fb.start, 658 resource_size(&pinfo->rsrc_fb)); 659 660 release_mem_region(pinfo->cmap_regs_phys, 0x1000); 661 662 framebuffer_release(info); 663 664 return 0; 665 } 666 667 static struct of_device_id platinumfb_match[] = 668 { 669 { 670 .name = "platinum", 671 }, 672 {}, 673 }; 674 675 static struct platform_driver platinum_driver = 676 { 677 .driver = { 678 .name = "platinumfb", 679 .of_match_table = platinumfb_match, 680 }, 681 .probe = platinumfb_probe, 682 .remove = platinumfb_remove, 683 }; 684 685 static int __init platinumfb_init(void) 686 { 687 #ifndef MODULE 688 char *option = NULL; 689 690 if (fb_get_options("platinumfb", &option)) 691 return -ENODEV; 692 platinumfb_setup(option); 693 #endif 694 platform_driver_register(&platinum_driver); 695 696 return 0; 697 } 698 699 static void __exit platinumfb_exit(void) 700 { 701 platform_driver_unregister(&platinum_driver); 702 } 703 704 MODULE_LICENSE("GPL"); 705 MODULE_DESCRIPTION("framebuffer driver for Apple Platinum video"); 706 module_init(platinumfb_init); 707 708 #ifdef MODULE 709 module_exit(platinumfb_exit); 710 #endif 711