drivers/video/leo.c

   1 /* leo.c: LEO frame buffer driver
   2  *
   3  * Copyright (C) 2003, 2006 David S. Miller (davem@davemloft.net)
   4  * Copyright (C) 1996-1999 Jakub Jelinek (jj@ultra.linux.cz)
   5  * Copyright (C) 1997 Michal Rehacek (Michal.Rehacek@st.mff.cuni.cz)
   6  *
   7  * Driver layout based loosely on tgafb.c, see that file for credits.
   8  */
   9
  10 #include <linux/module.h>
  11 #include <linux/kernel.h>
  12 #include <linux/errno.h>
  13 #include <linux/string.h>
  14 #include <linux/slab.h>
  15 #include <linux/delay.h>
  16 #include <linux/init.h>
  17 #include <linux/fb.h>
  18 #include <linux/mm.h>
  19 #include <linux/of_device.h>
  20 #include <linux/io.h>
  21
  22 #include <asm/fbio.h>
  23
  24 #include "sbuslib.h"
  25
  26 /*
  27  * Local functions.
  28  */
  29
  30 static int leo_setcolreg(unsigned, unsigned, unsigned, unsigned,
  31                          unsigned, struct fb_info *);
  32 static int leo_blank(int, struct fb_info *);
  33
  34 static int leo_mmap(struct fb_info *, struct vm_area_struct *);
  35 static int leo_ioctl(struct fb_info *, unsigned int, unsigned long);
  36
  37 /*
  38  *  Frame buffer operations
  39  */
  40
  41 static struct fb_ops leo_ops = {
  42         .owner                  = THIS_MODULE,
  43         .fb_setcolreg           = leo_setcolreg,
  44         .fb_blank               = leo_blank,
  45         .fb_fillrect            = cfb_fillrect,
  46         .fb_copyarea            = cfb_copyarea,
  47         .fb_imageblit           = cfb_imageblit,
  48         .fb_mmap                = leo_mmap,
  49         .fb_ioctl               = leo_ioctl,
  50 #ifdef CONFIG_COMPAT
  51         .fb_compat_ioctl        = sbusfb_compat_ioctl,
  52 #endif
  53 };
  54
  55 #define LEO_OFF_LC_SS0_KRN      0x00200000UL
  56 #define LEO_OFF_LC_SS0_USR      0x00201000UL
  57 #define LEO_OFF_LC_SS1_KRN      0x01200000UL
  58 #define LEO_OFF_LC_SS1_USR      0x01201000UL
  59 #define LEO_OFF_LD_SS0          0x00400000UL
  60 #define LEO_OFF_LD_SS1          0x01400000UL
  61 #define LEO_OFF_LD_GBL          0x00401000UL
  62 #define LEO_OFF_LX_KRN          0x00600000UL
  63 #define LEO_OFF_LX_CURSOR       0x00601000UL
  64 #define LEO_OFF_SS0             0x00800000UL
  65 #define LEO_OFF_SS1             0x01800000UL
  66 #define LEO_OFF_UNK             0x00602000UL
  67 #define LEO_OFF_UNK2            0x00000000UL
  68
  69 #define LEO_CUR_ENABLE          0x00000080
  70 #define LEO_CUR_UPDATE          0x00000030
  71 #define LEO_CUR_PROGRESS        0x00000006
  72 #define LEO_CUR_UPDATECMAP      0x00000003
  73
  74 #define LEO_CUR_TYPE_MASK       0x00000000
  75 #define LEO_CUR_TYPE_IMAGE      0x00000020
  76 #define LEO_CUR_TYPE_CMAP       0x00000050
  77
  78 struct leo_cursor {
  79         u8      xxx0[16];
  80         u32     cur_type;
  81         u32     cur_misc;
  82         u32     cur_cursxy;
  83         u32     cur_data;
  84 };
  85
  86 #define LEO_KRN_TYPE_CLUT0      0x00001000
  87 #define LEO_KRN_TYPE_CLUT1      0x00001001
  88 #define LEO_KRN_TYPE_CLUT2      0x00001002
  89 #define LEO_KRN_TYPE_WID        0x00001003
  90 #define LEO_KRN_TYPE_UNK        0x00001006
  91 #define LEO_KRN_TYPE_VIDEO      0x00002003
  92 #define LEO_KRN_TYPE_CLUTDATA   0x00004000
  93 #define LEO_KRN_CSR_ENABLE      0x00000008
  94 #define LEO_KRN_CSR_PROGRESS    0x00000004
  95 #define LEO_KRN_CSR_UNK         0x00000002
  96 #define LEO_KRN_CSR_UNK2        0x00000001
  97
  98 struct leo_lx_krn {
  99         u32     krn_type;
 100         u32     krn_csr;
 101         u32     krn_value;
 102 };
 103
 104 struct leo_lc_ss0_krn {
 105         u32     misc;
 106         u8      xxx0[0x800-4];
 107         u32     rev;
 108 };
 109
 110 struct leo_lc_ss0_usr {
 111         u32     csr;
 112         u32     addrspace;
 113         u32     fontmsk;
 114         u32     fontt;
 115         u32     extent;
 116         u32     src;
 117         u32     dst;
 118         u32     copy;
 119         u32     fill;
 120 };
 121
 122 struct leo_lc_ss1_krn {
 123         u8      unknown;
 124 };
 125
 126 struct leo_lc_ss1_usr {
 127         u8      unknown;
 128 };
 129
 130 struct leo_ld_ss0 {
 131         u8      xxx0[0xe00];
 132         u32     csr;
 133         u32     wid;
 134         u32     wmask;
 135         u32     widclip;
 136         u32     vclipmin;
 137         u32     vclipmax;
 138         u32     pickmin;        /* SS1 only */
 139         u32     pickmax;        /* SS1 only */
 140         u32     fg;
 141         u32     bg;
 142         u32     src;            /* Copy/Scroll (SS0 only) */
 143         u32     dst;            /* Copy/Scroll/Fill (SS0 only) */
 144         u32     extent;         /* Copy/Scroll/Fill size (SS0 only) */
 145         u32     xxx1[3];
 146         u32     setsem;         /* SS1 only */
 147         u32     clrsem;         /* SS1 only */
 148         u32     clrpick;        /* SS1 only */
 149         u32     clrdat;         /* SS1 only */
 150         u32     alpha;          /* SS1 only */
 151         u8      xxx2[0x2c];
 152         u32     winbg;
 153         u32     planemask;
 154         u32     rop;
 155         u32     z;
 156         u32     dczf;           /* SS1 only */
 157         u32     dczb;           /* SS1 only */
 158         u32     dcs;            /* SS1 only */
 159         u32     dczs;           /* SS1 only */
 160         u32     pickfb;         /* SS1 only */
 161         u32     pickbb;         /* SS1 only */
 162         u32     dcfc;           /* SS1 only */
 163         u32     forcecol;       /* SS1 only */
 164         u32     door[8];        /* SS1 only */
 165         u32     pick[5];        /* SS1 only */
 166 };
 167
 168 #define LEO_SS1_MISC_ENABLE     0x00000001
 169 #define LEO_SS1_MISC_STEREO     0x00000002
 170 struct leo_ld_ss1 {
 171         u8      xxx0[0xef4];
 172         u32     ss1_misc;
 173 };
 174
 175 struct leo_ld_gbl {
 176         u8      unknown;
 177 };
 178
 179 struct leo_par {
 180         spinlock_t              lock;
 181         struct leo_lx_krn       __iomem *lx_krn;
 182         struct leo_lc_ss0_usr   __iomem *lc_ss0_usr;
 183         struct leo_ld_ss0       __iomem *ld_ss0;
 184         struct leo_ld_ss1       __iomem *ld_ss1;
 185         struct leo_cursor       __iomem *cursor;
 186         u32                     extent;
 187         u32                     clut_data[256];
 188
 189         u32                     flags;
 190 #define LEO_FLAG_BLANKED        0x00000001
 191
 192         unsigned long           physbase;
 193         unsigned long           which_io;
 194         unsigned long           fbsize;
 195 };
 196
 197 static void leo_wait(struct leo_lx_krn __iomem *lx_krn)
 198 {
 199         int i;
 200
 201         for (i = 0;
 202              (sbus_readl(&lx_krn->krn_csr) & LEO_KRN_CSR_PROGRESS) &&
 203              i < 300000;
 204              i++)
 205                 udelay(1); /* Busy wait at most 0.3 sec */
 206         return;
 207 }
 208
 209 /**
 210  *      leo_setcolreg - Optional function. Sets a color register.
 211  *      @regno: boolean, 0 copy local, 1 get_user() function
 212  *      @red: frame buffer colormap structure
 213  *      @green: The green value which can be up to 16 bits wide
 214  *      @blue:  The blue value which can be up to 16 bits wide.
 215  *      @transp: If supported the alpha value which can be up to 16 bits wide.
 216  *      @info: frame buffer info structure
 217  */
 218 static int leo_setcolreg(unsigned regno,
 219                          unsigned red, unsigned green, unsigned blue,
 220                          unsigned transp, struct fb_info *info)
 221 {
 222         struct leo_par *par = (struct leo_par *) info->par;
 223         struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
 224         unsigned long flags;
 225         u32 val;
 226         int i;
 227
 228         if (regno >= 256)
 229                 return 1;
 230
 231         red >>= 8;
 232         green >>= 8;
 233         blue >>= 8;
 234
 235         par->clut_data[regno] = red | (green << 8) | (blue << 16);
 236
 237         spin_lock_irqsave(&par->lock, flags);
 238
 239         leo_wait(lx_krn);
 240
 241         sbus_writel(LEO_KRN_TYPE_CLUTDATA, &lx_krn->krn_type);
 242         for (i = 0; i < 256; i++)
 243                 sbus_writel(par->clut_data[i], &lx_krn->krn_value);
 244         sbus_writel(LEO_KRN_TYPE_CLUT0, &lx_krn->krn_type);
 245
 246         val = sbus_readl(&lx_krn->krn_csr);
 247         val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
 248         sbus_writel(val, &lx_krn->krn_csr);
 249
 250         spin_unlock_irqrestore(&par->lock, flags);
 251
 252         return 0;
 253 }
 254
 255 /**
 256  *      leo_blank - Optional function.  Blanks the display.
 257  *      @blank_mode: the blank mode we want.
 258  *      @info: frame buffer structure that represents a single frame buffer
 259  */
 260 static int leo_blank(int blank, struct fb_info *info)
 261 {
 262         struct leo_par *par = (struct leo_par *) info->par;
 263         struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
 264         unsigned long flags;
 265         u32 val;
 266
 267         spin_lock_irqsave(&par->lock, flags);
 268
 269         switch (blank) {
 270         case FB_BLANK_UNBLANK: /* Unblanking */
 271                 val = sbus_readl(&lx_krn->krn_csr);
 272                 val |= LEO_KRN_CSR_ENABLE;
 273                 sbus_writel(val, &lx_krn->krn_csr);
 274                 par->flags &= ~LEO_FLAG_BLANKED;
 275                 break;
 276
 277         case FB_BLANK_NORMAL: /* Normal blanking */
 278         case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
 279         case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
 280         case FB_BLANK_POWERDOWN: /* Poweroff */
 281                 val = sbus_readl(&lx_krn->krn_csr);
 282                 val &= ~LEO_KRN_CSR_ENABLE;
 283                 sbus_writel(val, &lx_krn->krn_csr);
 284                 par->flags |= LEO_FLAG_BLANKED;
 285                 break;
 286         }
 287
 288         spin_unlock_irqrestore(&par->lock, flags);
 289
 290         return 0;
 291 }
 292
 293 static struct sbus_mmap_map leo_mmap_map[] = {
 294         {
 295                 .voff   = LEO_SS0_MAP,
 296                 .poff   = LEO_OFF_SS0,
 297                 .size   = 0x800000
 298         },
 299         {
 300                 .voff   = LEO_LC_SS0_USR_MAP,
 301                 .poff   = LEO_OFF_LC_SS0_USR,
 302                 .size   = 0x1000
 303         },
 304         {
 305                 .voff   = LEO_LD_SS0_MAP,
 306                 .poff   = LEO_OFF_LD_SS0,
 307                 .size   = 0x1000
 308         },
 309         {
 310                 .voff   = LEO_LX_CURSOR_MAP,
 311                 .poff   = LEO_OFF_LX_CURSOR,
 312                 .size   = 0x1000
 313         },
 314         {
 315                 .voff   = LEO_SS1_MAP,
 316                 .poff   = LEO_OFF_SS1,
 317                 .size   = 0x800000
 318         },
 319         {
 320                 .voff   = LEO_LC_SS1_USR_MAP,
 321                 .poff   = LEO_OFF_LC_SS1_USR,
 322                 .size   = 0x1000
 323         },
 324         {
 325                 .voff   = LEO_LD_SS1_MAP,
 326                 .poff   = LEO_OFF_LD_SS1,
 327                 .size   = 0x1000
 328         },
 329         {
 330                 .voff   = LEO_UNK_MAP,
 331                 .poff   = LEO_OFF_UNK,
 332                 .size   = 0x1000
 333         },
 334         {
 335                 .voff   = LEO_LX_KRN_MAP,
 336                 .poff   = LEO_OFF_LX_KRN,
 337                 .size   = 0x1000
 338         },
 339         {
 340                 .voff   = LEO_LC_SS0_KRN_MAP,
 341                 .poff   = LEO_OFF_LC_SS0_KRN,
 342                 .size   = 0x1000
 343         },
 344         {
 345                 .voff   = LEO_LC_SS1_KRN_MAP,
 346                 .poff   = LEO_OFF_LC_SS1_KRN,
 347                 .size   = 0x1000
 348         },
 349         {
 350                 .voff   = LEO_LD_GBL_MAP,
 351                 .poff   = LEO_OFF_LD_GBL,
 352                 .size   = 0x1000
 353         },
 354         {
 355                 .voff   = LEO_UNK2_MAP,
 356                 .poff   = LEO_OFF_UNK2,
 357                 .size   = 0x100000
 358         },
 359         { .size = 0 }
 360 };
 361
 362 static int leo_mmap(struct fb_info *info, struct vm_area_struct *vma)
 363 {
 364         struct leo_par *par = (struct leo_par *)info->par;
 365
 366         return sbusfb_mmap_helper(leo_mmap_map,
 367                                   par->physbase, par->fbsize,
 368                                   par->which_io, vma);
 369 }
 370
 371 static int leo_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
 372 {
 373         struct leo_par *par = (struct leo_par *) info->par;
 374
 375         return sbusfb_ioctl_helper(cmd, arg, info,
 376                                    FBTYPE_SUNLEO, 32, par->fbsize);
 377 }
 378
 379 /*
 380  *  Initialisation
 381  */
 382
 383 static void
 384 leo_init_fix(struct fb_info *info, struct device_node *dp)
 385 {
 386         strlcpy(info->fix.id, dp->name, sizeof(info->fix.id));
 387
 388         info->fix.type = FB_TYPE_PACKED_PIXELS;
 389         info->fix.visual = FB_VISUAL_TRUECOLOR;
 390
 391         info->fix.line_length = 8192;
 392
 393         info->fix.accel = FB_ACCEL_SUN_LEO;
 394 }
 395
 396 static void leo_wid_put(struct fb_info *info, struct fb_wid_list *wl)
 397 {
 398         struct leo_par *par = (struct leo_par *) info->par;
 399         struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
 400         struct fb_wid_item *wi;
 401         unsigned long flags;
 402         u32 val;
 403         int i, j;
 404
 405         spin_lock_irqsave(&par->lock, flags);
 406
 407         leo_wait(lx_krn);
 408
 409         for (i = 0, wi = wl->wl_list; i < wl->wl_count; i++, wi++) {
 410                 switch (wi->wi_type) {
 411                 case FB_WID_DBL_8:
 412                         j = (wi->wi_index & 0xf) + 0x40;
 413                         break;
 414
 415                 case FB_WID_DBL_24:
 416                         j = wi->wi_index & 0x3f;
 417                         break;
 418
 419                 default:
 420                         continue;
 421                 };
 422                 sbus_writel(0x5800 + j, &lx_krn->krn_type);
 423                 sbus_writel(wi->wi_values[0], &lx_krn->krn_value);
 424         }
 425         sbus_writel(LEO_KRN_TYPE_WID, &lx_krn->krn_type);
 426
 427         val = sbus_readl(&lx_krn->krn_csr);
 428         val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
 429         sbus_writel(val, &lx_krn->krn_csr);
 430
 431         spin_unlock_irqrestore(&par->lock, flags);
 432 }
 433
 434 static void leo_init_wids(struct fb_info *info)
 435 {
 436         struct fb_wid_item wi;
 437         struct fb_wid_list wl;
 438
 439         wl.wl_count = 1;
 440         wl.wl_list = &wi;
 441         wi.wi_type = FB_WID_DBL_8;
 442         wi.wi_index = 0;
 443         wi.wi_values [0] = 0x2c0;
 444         leo_wid_put(info, &wl);
 445         wi.wi_index = 1;
 446         wi.wi_values [0] = 0x30;
 447         leo_wid_put(info, &wl);
 448         wi.wi_index = 2;
 449         wi.wi_values [0] = 0x20;
 450         leo_wid_put(info, &wl);
 451         wi.wi_type = FB_WID_DBL_24;
 452         wi.wi_index = 1;
 453         wi.wi_values [0] = 0x30;
 454         leo_wid_put(info, &wl);
 455 }
 456
 457 static void leo_switch_from_graph(struct fb_info *info)
 458 {
 459         struct leo_par *par = (struct leo_par *) info->par;
 460         struct leo_ld_ss0 __iomem *ss = par->ld_ss0;
 461         unsigned long flags;
 462         u32 val;
 463
 464         spin_lock_irqsave(&par->lock, flags);
 465
 466         par->extent = ((info->var.xres - 1) |
 467                        ((info->var.yres - 1) << 16));
 468
 469         sbus_writel(0xffffffff, &ss->wid);
 470         sbus_writel(0xffff, &ss->wmask);
 471         sbus_writel(0, &ss->vclipmin);
 472         sbus_writel(par->extent, &ss->vclipmax);
 473         sbus_writel(0, &ss->fg);
 474         sbus_writel(0xff000000, &ss->planemask);
 475         sbus_writel(0x310850, &ss->rop);
 476         sbus_writel(0, &ss->widclip);
 477         sbus_writel((info->var.xres-1) | ((info->var.yres-1) << 11),
 478                     &par->lc_ss0_usr->extent);
 479         sbus_writel(4, &par->lc_ss0_usr->addrspace);
 480         sbus_writel(0x80000000, &par->lc_ss0_usr->fill);
 481         sbus_writel(0, &par->lc_ss0_usr->fontt);
 482         do {
 483                 val = sbus_readl(&par->lc_ss0_usr->csr);
 484         } while (val & 0x20000000);
 485
 486         /* setup screen buffer for cfb_* functions */
 487         sbus_writel(1, &ss->wid);
 488         sbus_writel(0x00ffffff, &ss->planemask);
 489         sbus_writel(0x310b90, &ss->rop);
 490         sbus_writel(0, &par->lc_ss0_usr->addrspace);
 491
 492         spin_unlock_irqrestore(&par->lock, flags);
 493 }
 494
 495 static void leo_init_hw(struct fb_info *info)
 496 {
 497         struct leo_par *par = (struct leo_par *) info->par;
 498         u32 val;
 499
 500         val = sbus_readl(&par->ld_ss1->ss1_misc);
 501         val |= LEO_SS1_MISC_ENABLE;
 502         sbus_writel(val, &par->ld_ss1->ss1_misc);
 503
 504         leo_switch_from_graph(info);
 505 }
 506
 507 static void leo_fixup_var_rgb(struct fb_var_screeninfo *var)
 508 {
 509         var->red.offset = 0;
 510         var->red.length = 8;
 511         var->green.offset = 8;
 512         var->green.length = 8;
 513         var->blue.offset = 16;
 514         var->blue.length = 8;
 515         var->transp.offset = 0;
 516         var->transp.length = 0;
 517 }
 518
 519 static void leo_unmap_regs(struct of_device *op, struct fb_info *info,
 520                            struct leo_par *par)
 521 {
 522         if (par->lc_ss0_usr)
 523                 of_iounmap(&op->resource[0], par->lc_ss0_usr, 0x1000);
 524         if (par->ld_ss0)
 525                 of_iounmap(&op->resource[0], par->ld_ss0, 0x1000);
 526         if (par->ld_ss1)
 527                 of_iounmap(&op->resource[0], par->ld_ss1, 0x1000);
 528         if (par->lx_krn)
 529                 of_iounmap(&op->resource[0], par->lx_krn, 0x1000);
 530         if (par->cursor)
 531                 of_iounmap(&op->resource[0],
 532                            par->cursor, sizeof(struct leo_cursor));
 533         if (info->screen_base)
 534                 of_iounmap(&op->resource[0], info->screen_base, 0x800000);
 535 }
 536
 537 static int __devinit leo_probe(struct of_device *op,
 538                                const struct of_device_id *match)
 539 {
 540         struct device_node *dp = op->node;
 541         struct fb_info *info;
 542         struct leo_par *par;
 543         int linebytes, err;
 544
 545         info = framebuffer_alloc(sizeof(struct leo_par), &op->dev);
 546
 547         err = -ENOMEM;
 548         if (!info)
 549                 goto out_err;
 550         par = info->par;
 551
 552         spin_lock_init(&par->lock);
 553
 554         par->physbase = op->resource[0].start;
 555         par->which_io = op->resource[0].flags & IORESOURCE_BITS;
 556
 557         sbusfb_fill_var(&info->var, dp, 32);
 558         leo_fixup_var_rgb(&info->var);
 559
 560         linebytes = of_getintprop_default(dp, "linebytes",
 561                                           info->var.xres);
 562         par->fbsize = PAGE_ALIGN(linebytes * info->var.yres);
 563
 564         par->lc_ss0_usr =
 565                 of_ioremap(&op->resource[0], LEO_OFF_LC_SS0_USR,
 566                            0x1000, "leolc ss0usr");
 567         par->ld_ss0 =
 568                 of_ioremap(&op->resource[0], LEO_OFF_LD_SS0,
 569                            0x1000, "leold ss0");
 570         par->ld_ss1 =
 571                 of_ioremap(&op->resource[0], LEO_OFF_LD_SS1,
 572                            0x1000, "leold ss1");
 573         par->lx_krn =
 574                 of_ioremap(&op->resource[0], LEO_OFF_LX_KRN,
 575                            0x1000, "leolx krn");
 576         par->cursor =
 577                 of_ioremap(&op->resource[0], LEO_OFF_LX_CURSOR,
 578                            sizeof(struct leo_cursor), "leolx cursor");
 579         info->screen_base =
 580                 of_ioremap(&op->resource[0], LEO_OFF_SS0,
 581                            0x800000, "leo ram");
 582         if (!par->lc_ss0_usr ||
 583             !par->ld_ss0 ||
 584             !par->ld_ss1 ||
 585             !par->lx_krn ||
 586             !par->cursor ||
 587             !info->screen_base)
 588                 goto out_unmap_regs;
 589
 590         info->flags = FBINFO_DEFAULT;
 591         info->fbops = &leo_ops;
 592         info->pseudo_palette = par->clut_data;
 593
 594         leo_init_wids(info);
 595         leo_init_hw(info);
 596
 597         leo_blank(FB_BLANK_UNBLANK, info);
 598
 599         if (fb_alloc_cmap(&info->cmap, 256, 0))
 600                 goto out_unmap_regs;
 601
 602         leo_init_fix(info, dp);
 603
 604         err = register_framebuffer(info);
 605         if (err < 0)
 606                 goto out_dealloc_cmap;
 607
 608         dev_set_drvdata(&op->dev, info);
 609
 610         printk(KERN_INFO "%s: leo at %lx:%lx\n",
 611                dp->full_name,
 612                par->which_io, par->physbase);
 613
 614         return 0;
 615
 616 out_dealloc_cmap:
 617         fb_dealloc_cmap(&info->cmap);
 618
 619 out_unmap_regs:
 620         leo_unmap_regs(op, info, par);
 621         framebuffer_release(info);
 622
 623 out_err:
 624         return err;
 625 }
 626
 627 static int __devexit leo_remove(struct of_device *op)
 628 {
 629         struct fb_info *info = dev_get_drvdata(&op->dev);
 630         struct leo_par *par = info->par;
 631
 632         unregister_framebuffer(info);
 633         fb_dealloc_cmap(&info->cmap);
 634
 635         leo_unmap_regs(op, info, par);
 636
 637         framebuffer_release(info);
 638
 639         dev_set_drvdata(&op->dev, NULL);
 640
 641         return 0;
 642 }
 643
 644 static struct of_device_id leo_match[] = {
 645         {
 646                 .name = "SUNW,leo",
 647         },
 648         {},
 649 };
 650 MODULE_DEVICE_TABLE(of, leo_match);
 651
 652 static struct of_platform_driver leo_driver = {
 653         .name           = "leo",
 654         .match_table    = leo_match,
 655         .probe          = leo_probe,
 656         .remove         = __devexit_p(leo_remove),
 657 };
 658
 659 static int __init leo_init(void)
 660 {
 661         if (fb_get_options("leofb", NULL))
 662                 return -ENODEV;
 663
 664         return of_register_driver(&leo_driver, &of_bus_type);
 665 }
 666
 667 static void __exit leo_exit(void)
 668 {
 669         of_unregister_driver(&leo_driver);
 670 }
 671
 672 module_init(leo_init);
 673 module_exit(leo_exit);
 674
 675 MODULE_DESCRIPTION("framebuffer driver for LEO chipsets");
 676 MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
 677 MODULE_VERSION("2.0");
 678 MODULE_LICENSE("GPL");