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