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   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 static int leo_pan_display(struct fb_var_screeninfo *, struct fb_info *);
  37
  38 /*
  39  *  Frame buffer operations
  40  */
  41
  42 static struct fb_ops leo_ops = {
  43         .owner                  = THIS_MODULE,
  44         .fb_setcolreg           = leo_setcolreg,
  45         .fb_blank               = leo_blank,
  46         .fb_pan_display         = leo_pan_display,
  47         .fb_fillrect            = cfb_fillrect,
  48         .fb_copyarea            = cfb_copyarea,
  49         .fb_imageblit           = cfb_imageblit,
  50         .fb_mmap                = leo_mmap,
  51         .fb_ioctl               = leo_ioctl,
  52 #ifdef CONFIG_COMPAT
  53         .fb_compat_ioctl        = sbusfb_compat_ioctl,
  54 #endif
  55 };
  56
  57 #define LEO_OFF_LC_SS0_KRN      0x00200000UL
  58 #define LEO_OFF_LC_SS0_USR      0x00201000UL
  59 #define LEO_OFF_LC_SS1_KRN      0x01200000UL
  60 #define LEO_OFF_LC_SS1_USR      0x01201000UL
  61 #define LEO_OFF_LD_SS0          0x00400000UL
  62 #define LEO_OFF_LD_SS1          0x01400000UL
  63 #define LEO_OFF_LD_GBL          0x00401000UL
  64 #define LEO_OFF_LX_KRN          0x00600000UL
  65 #define LEO_OFF_LX_CURSOR       0x00601000UL
  66 #define LEO_OFF_SS0             0x00800000UL
  67 #define LEO_OFF_SS1             0x01800000UL
  68 #define LEO_OFF_UNK             0x00602000UL
  69 #define LEO_OFF_UNK2            0x00000000UL
  70
  71 #define LEO_CUR_ENABLE          0x00000080
  72 #define LEO_CUR_UPDATE          0x00000030
  73 #define LEO_CUR_PROGRESS        0x00000006
  74 #define LEO_CUR_UPDATECMAP      0x00000003
  75
  76 #define LEO_CUR_TYPE_MASK       0x00000000
  77 #define LEO_CUR_TYPE_IMAGE      0x00000020
  78 #define LEO_CUR_TYPE_CMAP       0x00000050
  79
  80 struct leo_cursor {
  81         u8      xxx0[16];
  82         u32     cur_type;
  83         u32     cur_misc;
  84         u32     cur_cursxy;
  85         u32     cur_data;
  86 };
  87
  88 #define LEO_KRN_TYPE_CLUT0      0x00001000
  89 #define LEO_KRN_TYPE_CLUT1      0x00001001
  90 #define LEO_KRN_TYPE_CLUT2      0x00001002
  91 #define LEO_KRN_TYPE_WID        0x00001003
  92 #define LEO_KRN_TYPE_UNK        0x00001006
  93 #define LEO_KRN_TYPE_VIDEO      0x00002003
  94 #define LEO_KRN_TYPE_CLUTDATA   0x00004000
  95 #define LEO_KRN_CSR_ENABLE      0x00000008
  96 #define LEO_KRN_CSR_PROGRESS    0x00000004
  97 #define LEO_KRN_CSR_UNK         0x00000002
  98 #define LEO_KRN_CSR_UNK2        0x00000001
  99
 100 struct leo_lx_krn {
 101         u32     krn_type;
 102         u32     krn_csr;
 103         u32     krn_value;
 104 };
 105
 106 struct leo_lc_ss0_krn {
 107         u32     misc;
 108         u8      xxx0[0x800-4];
 109         u32     rev;
 110 };
 111
 112 struct leo_lc_ss0_usr {
 113         u32     csr;
 114         u32     addrspace;
 115         u32     fontmsk;
 116         u32     fontt;
 117         u32     extent;
 118         u32     src;
 119         u32     dst;
 120         u32     copy;
 121         u32     fill;
 122 };
 123
 124 struct leo_lc_ss1_krn {
 125         u8      unknown;
 126 };
 127
 128 struct leo_lc_ss1_usr {
 129         u8      unknown;
 130 };
 131
 132 struct leo_ld_ss0 {
 133         u8      xxx0[0xe00];
 134         u32     csr;
 135         u32     wid;
 136         u32     wmask;
 137         u32     widclip;
 138         u32     vclipmin;
 139         u32     vclipmax;
 140         u32     pickmin;        /* SS1 only */
 141         u32     pickmax;        /* SS1 only */
 142         u32     fg;
 143         u32     bg;
 144         u32     src;            /* Copy/Scroll (SS0 only) */
 145         u32     dst;            /* Copy/Scroll/Fill (SS0 only) */
 146         u32     extent;         /* Copy/Scroll/Fill size (SS0 only) */
 147         u32     xxx1[3];
 148         u32     setsem;         /* SS1 only */
 149         u32     clrsem;         /* SS1 only */
 150         u32     clrpick;        /* SS1 only */
 151         u32     clrdat;         /* SS1 only */
 152         u32     alpha;          /* SS1 only */
 153         u8      xxx2[0x2c];
 154         u32     winbg;
 155         u32     planemask;
 156         u32     rop;
 157         u32     z;
 158         u32     dczf;           /* SS1 only */
 159         u32     dczb;           /* SS1 only */
 160         u32     dcs;            /* SS1 only */
 161         u32     dczs;           /* SS1 only */
 162         u32     pickfb;         /* SS1 only */
 163         u32     pickbb;         /* SS1 only */
 164         u32     dcfc;           /* SS1 only */
 165         u32     forcecol;       /* SS1 only */
 166         u32     door[8];        /* SS1 only */
 167         u32     pick[5];        /* SS1 only */
 168 };
 169
 170 #define LEO_SS1_MISC_ENABLE     0x00000001
 171 #define LEO_SS1_MISC_STEREO     0x00000002
 172 struct leo_ld_ss1 {
 173         u8      xxx0[0xef4];
 174         u32     ss1_misc;
 175 };
 176
 177 struct leo_ld_gbl {
 178         u8      unknown;
 179 };
 180
 181 struct leo_par {
 182         spinlock_t              lock;
 183         struct leo_lx_krn       __iomem *lx_krn;
 184         struct leo_lc_ss0_usr   __iomem *lc_ss0_usr;
 185         struct leo_ld_ss0       __iomem *ld_ss0;
 186         struct leo_ld_ss1       __iomem *ld_ss1;
 187         struct leo_cursor       __iomem *cursor;
 188         u32                     extent;
 189         u32                     clut_data[256];
 190
 191         u32                     flags;
 192 #define LEO_FLAG_BLANKED        0x00000001
 193
 194         unsigned long           physbase;
 195         unsigned long           which_io;
 196         unsigned long           fbsize;
 197 };
 198
 199 static void leo_wait(struct leo_lx_krn __iomem *lx_krn)
 200 {
 201         int i;
 202
 203         for (i = 0;
 204              (sbus_readl(&lx_krn->krn_csr) & LEO_KRN_CSR_PROGRESS) &&
 205              i < 300000;
 206              i++)
 207                 udelay(1); /* Busy wait at most 0.3 sec */
 208         return;
 209 }
 210
 211 static void leo_switch_from_graph(struct fb_info *info)
 212 {
 213         struct leo_par *par = (struct leo_par *) info->par;
 214         struct leo_ld_ss0 __iomem *ss = par->ld_ss0;
 215         struct leo_cursor __iomem *cursor = par->cursor;
 216         unsigned long flags;
 217         u32 val;
 218
 219         spin_lock_irqsave(&par->lock, flags);
 220
 221         par->extent = ((info->var.xres - 1) |
 222                        ((info->var.yres - 1) << 16));
 223
 224         sbus_writel(0xffffffff, &ss->wid);
 225         sbus_writel(0xffff, &ss->wmask);
 226         sbus_writel(0, &ss->vclipmin);
 227         sbus_writel(par->extent, &ss->vclipmax);
 228         sbus_writel(0, &ss->fg);
 229         sbus_writel(0xff000000, &ss->planemask);
 230         sbus_writel(0x310850, &ss->rop);
 231         sbus_writel(0, &ss->widclip);
 232         sbus_writel((info->var.xres-1) | ((info->var.yres-1) << 11),
 233                     &par->lc_ss0_usr->extent);
 234         sbus_writel(4, &par->lc_ss0_usr->addrspace);
 235         sbus_writel(0x80000000, &par->lc_ss0_usr->fill);
 236         sbus_writel(0, &par->lc_ss0_usr->fontt);
 237         do {
 238                 val = sbus_readl(&par->lc_ss0_usr->csr);
 239         } while (val & 0x20000000);
 240
 241         /* setup screen buffer for cfb_* functions */
 242         sbus_writel(1, &ss->wid);
 243         sbus_writel(0x00ffffff, &ss->planemask);
 244         sbus_writel(0x310b90, &ss->rop);
 245         sbus_writel(0, &par->lc_ss0_usr->addrspace);
 246
 247         /* hide cursor */
 248         sbus_writel(sbus_readl(&cursor->cur_misc) & ~LEO_CUR_ENABLE, &cursor->cur_misc);
 249
 250         spin_unlock_irqrestore(&par->lock, flags);
 251 }
 252
 253 static int leo_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
 254 {
 255         /* We just use this to catch switches out of
 256          * graphics mode.
 257          */
 258         leo_switch_from_graph(info);
 259
 260         if (var->xoffset || var->yoffset || var->vmode)
 261                 return -EINVAL;
 262         return 0;
 263 }
 264
 265 /**
 266  *      leo_setcolreg - Optional function. Sets a color register.
 267  *      @regno: boolean, 0 copy local, 1 get_user() function
 268  *      @red: frame buffer colormap structure
 269  *      @green: The green value which can be up to 16 bits wide
 270  *      @blue:  The blue value which can be up to 16 bits wide.
 271  *      @transp: If supported the alpha value which can be up to 16 bits wide.
 272  *      @info: frame buffer info structure
 273  */
 274 static int leo_setcolreg(unsigned regno,
 275                          unsigned red, unsigned green, unsigned blue,
 276                          unsigned transp, struct fb_info *info)
 277 {
 278         struct leo_par *par = (struct leo_par *) info->par;
 279         struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
 280         unsigned long flags;
 281         u32 val;
 282         int i;
 283
 284         if (regno >= 256)
 285                 return 1;
 286
 287         red >>= 8;
 288         green >>= 8;
 289         blue >>= 8;
 290
 291         par->clut_data[regno] = red | (green << 8) | (blue << 16);
 292
 293         spin_lock_irqsave(&par->lock, flags);
 294
 295         leo_wait(lx_krn);
 296
 297         sbus_writel(LEO_KRN_TYPE_CLUTDATA, &lx_krn->krn_type);
 298         for (i = 0; i < 256; i++)
 299                 sbus_writel(par->clut_data[i], &lx_krn->krn_value);
 300         sbus_writel(LEO_KRN_TYPE_CLUT0, &lx_krn->krn_type);
 301
 302         val = sbus_readl(&lx_krn->krn_csr);
 303         val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
 304         sbus_writel(val, &lx_krn->krn_csr);
 305
 306         spin_unlock_irqrestore(&par->lock, flags);
 307
 308         return 0;
 309 }
 310
 311 /**
 312  *      leo_blank - Optional function.  Blanks the display.
 313  *      @blank_mode: the blank mode we want.
 314  *      @info: frame buffer structure that represents a single frame buffer
 315  */
 316 static int leo_blank(int blank, struct fb_info *info)
 317 {
 318         struct leo_par *par = (struct leo_par *) info->par;
 319         struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
 320         unsigned long flags;
 321         u32 val;
 322
 323         spin_lock_irqsave(&par->lock, flags);
 324
 325         switch (blank) {
 326         case FB_BLANK_UNBLANK: /* Unblanking */
 327                 val = sbus_readl(&lx_krn->krn_csr);
 328                 val |= LEO_KRN_CSR_ENABLE;
 329                 sbus_writel(val, &lx_krn->krn_csr);
 330                 par->flags &= ~LEO_FLAG_BLANKED;
 331                 break;
 332
 333         case FB_BLANK_NORMAL: /* Normal blanking */
 334         case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
 335         case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
 336         case FB_BLANK_POWERDOWN: /* Poweroff */
 337                 val = sbus_readl(&lx_krn->krn_csr);
 338                 val &= ~LEO_KRN_CSR_ENABLE;
 339                 sbus_writel(val, &lx_krn->krn_csr);
 340                 par->flags |= LEO_FLAG_BLANKED;
 341                 break;
 342         }
 343
 344         spin_unlock_irqrestore(&par->lock, flags);
 345
 346         return 0;
 347 }
 348
 349 static struct sbus_mmap_map leo_mmap_map[] = {
 350         {
 351                 .voff   = LEO_SS0_MAP,
 352                 .poff   = LEO_OFF_SS0,
 353                 .size   = 0x800000
 354         },
 355         {
 356                 .voff   = LEO_LC_SS0_USR_MAP,
 357                 .poff   = LEO_OFF_LC_SS0_USR,
 358                 .size   = 0x1000
 359         },
 360         {
 361                 .voff   = LEO_LD_SS0_MAP,
 362                 .poff   = LEO_OFF_LD_SS0,
 363                 .size   = 0x1000
 364         },
 365         {
 366                 .voff   = LEO_LX_CURSOR_MAP,
 367                 .poff   = LEO_OFF_LX_CURSOR,
 368                 .size   = 0x1000
 369         },
 370         {
 371                 .voff   = LEO_SS1_MAP,
 372                 .poff   = LEO_OFF_SS1,
 373                 .size   = 0x800000
 374         },
 375         {
 376                 .voff   = LEO_LC_SS1_USR_MAP,
 377                 .poff   = LEO_OFF_LC_SS1_USR,
 378                 .size   = 0x1000
 379         },
 380         {
 381                 .voff   = LEO_LD_SS1_MAP,
 382                 .poff   = LEO_OFF_LD_SS1,
 383                 .size   = 0x1000
 384         },
 385         {
 386                 .voff   = LEO_UNK_MAP,
 387                 .poff   = LEO_OFF_UNK,
 388                 .size   = 0x1000
 389         },
 390         {
 391                 .voff   = LEO_LX_KRN_MAP,
 392                 .poff   = LEO_OFF_LX_KRN,
 393                 .size   = 0x1000
 394         },
 395         {
 396                 .voff   = LEO_LC_SS0_KRN_MAP,
 397                 .poff   = LEO_OFF_LC_SS0_KRN,
 398                 .size   = 0x1000
 399         },
 400         {
 401                 .voff   = LEO_LC_SS1_KRN_MAP,
 402                 .poff   = LEO_OFF_LC_SS1_KRN,
 403                 .size   = 0x1000
 404         },
 405         {
 406                 .voff   = LEO_LD_GBL_MAP,
 407                 .poff   = LEO_OFF_LD_GBL,
 408                 .size   = 0x1000
 409         },
 410         {
 411                 .voff   = LEO_UNK2_MAP,
 412                 .poff   = LEO_OFF_UNK2,
 413                 .size   = 0x100000
 414         },
 415         { .size = 0 }
 416 };
 417
 418 static int leo_mmap(struct fb_info *info, struct vm_area_struct *vma)
 419 {
 420         struct leo_par *par = (struct leo_par *)info->par;
 421
 422         return sbusfb_mmap_helper(leo_mmap_map,
 423                                   par->physbase, par->fbsize,
 424                                   par->which_io, vma);
 425 }
 426
 427 static int leo_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
 428 {
 429         struct leo_par *par = (struct leo_par *) info->par;
 430
 431         return sbusfb_ioctl_helper(cmd, arg, info,
 432                                    FBTYPE_SUNLEO, 32, par->fbsize);
 433 }
 434
 435 /*
 436  *  Initialisation
 437  */
 438
 439 static void
 440 leo_init_fix(struct fb_info *info, struct device_node *dp)
 441 {
 442         strlcpy(info->fix.id, dp->name, sizeof(info->fix.id));
 443
 444         info->fix.type = FB_TYPE_PACKED_PIXELS;
 445         info->fix.visual = FB_VISUAL_TRUECOLOR;
 446
 447         info->fix.line_length = 8192;
 448
 449         info->fix.accel = FB_ACCEL_SUN_LEO;
 450 }
 451
 452 static void leo_wid_put(struct fb_info *info, struct fb_wid_list *wl)
 453 {
 454         struct leo_par *par = (struct leo_par *) info->par;
 455         struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
 456         struct fb_wid_item *wi;
 457         unsigned long flags;
 458         u32 val;
 459         int i, j;
 460
 461         spin_lock_irqsave(&par->lock, flags);
 462
 463         leo_wait(lx_krn);
 464
 465         for (i = 0, wi = wl->wl_list; i < wl->wl_count; i++, wi++) {
 466                 switch (wi->wi_type) {
 467                 case FB_WID_DBL_8:
 468                         j = (wi->wi_index & 0xf) + 0x40;
 469                         break;
 470
 471                 case FB_WID_DBL_24:
 472                         j = wi->wi_index & 0x3f;
 473                         break;
 474
 475                 default:
 476                         continue;
 477                 };
 478                 sbus_writel(0x5800 + j, &lx_krn->krn_type);
 479                 sbus_writel(wi->wi_values[0], &lx_krn->krn_value);
 480         }
 481         sbus_writel(LEO_KRN_TYPE_WID, &lx_krn->krn_type);
 482
 483         val = sbus_readl(&lx_krn->krn_csr);
 484         val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
 485         sbus_writel(val, &lx_krn->krn_csr);
 486
 487         spin_unlock_irqrestore(&par->lock, flags);
 488 }
 489
 490 static void leo_init_wids(struct fb_info *info)
 491 {
 492         struct fb_wid_item wi;
 493         struct fb_wid_list wl;
 494
 495         wl.wl_count = 1;
 496         wl.wl_list = &wi;
 497         wi.wi_type = FB_WID_DBL_8;
 498         wi.wi_index = 0;
 499         wi.wi_values [0] = 0x2c0;
 500         leo_wid_put(info, &wl);
 501         wi.wi_index = 1;
 502         wi.wi_values [0] = 0x30;
 503         leo_wid_put(info, &wl);
 504         wi.wi_index = 2;
 505         wi.wi_values [0] = 0x20;
 506         leo_wid_put(info, &wl);
 507         wi.wi_type = FB_WID_DBL_24;
 508         wi.wi_index = 1;
 509         wi.wi_values [0] = 0x30;
 510         leo_wid_put(info, &wl);
 511 }
 512
 513 static void leo_init_hw(struct fb_info *info)
 514 {
 515         struct leo_par *par = (struct leo_par *) info->par;
 516         u32 val;
 517
 518         val = sbus_readl(&par->ld_ss1->ss1_misc);
 519         val |= LEO_SS1_MISC_ENABLE;
 520         sbus_writel(val, &par->ld_ss1->ss1_misc);
 521
 522         leo_switch_from_graph(info);
 523 }
 524
 525 static void leo_fixup_var_rgb(struct fb_var_screeninfo *var)
 526 {
 527         var->red.offset = 0;
 528         var->red.length = 8;
 529         var->green.offset = 8;
 530         var->green.length = 8;
 531         var->blue.offset = 16;
 532         var->blue.length = 8;
 533         var->transp.offset = 0;
 534         var->transp.length = 0;
 535 }
 536
 537 static void leo_unmap_regs(struct of_device *op, struct fb_info *info,
 538                            struct leo_par *par)
 539 {
 540         if (par->lc_ss0_usr)
 541                 of_iounmap(&op->resource[0], par->lc_ss0_usr, 0x1000);
 542         if (par->ld_ss0)
 543                 of_iounmap(&op->resource[0], par->ld_ss0, 0x1000);
 544         if (par->ld_ss1)
 545                 of_iounmap(&op->resource[0], par->ld_ss1, 0x1000);
 546         if (par->lx_krn)
 547                 of_iounmap(&op->resource[0], par->lx_krn, 0x1000);
 548         if (par->cursor)
 549                 of_iounmap(&op->resource[0],
 550                            par->cursor, sizeof(struct leo_cursor));
 551         if (info->screen_base)
 552                 of_iounmap(&op->resource[0], info->screen_base, 0x800000);
 553 }
 554
 555 static int __devinit leo_probe(struct of_device *op,
 556                                const struct of_device_id *match)
 557 {
 558         struct device_node *dp = op->node;
 559         struct fb_info *info;
 560         struct leo_par *par;
 561         int linebytes, err;
 562
 563         info = framebuffer_alloc(sizeof(struct leo_par), &op->dev);
 564
 565         err = -ENOMEM;
 566         if (!info)
 567                 goto out_err;
 568         par = info->par;
 569
 570         spin_lock_init(&par->lock);
 571
 572         par->physbase = op->resource[0].start;
 573         par->which_io = op->resource[0].flags & IORESOURCE_BITS;
 574
 575         sbusfb_fill_var(&info->var, dp, 32);
 576         leo_fixup_var_rgb(&info->var);
 577
 578         linebytes = of_getintprop_default(dp, "linebytes",
 579                                           info->var.xres);
 580         par->fbsize = PAGE_ALIGN(linebytes * info->var.yres);
 581
 582         par->lc_ss0_usr =
 583                 of_ioremap(&op->resource[0], LEO_OFF_LC_SS0_USR,
 584                            0x1000, "leolc ss0usr");
 585         par->ld_ss0 =
 586                 of_ioremap(&op->resource[0], LEO_OFF_LD_SS0,
 587                            0x1000, "leold ss0");
 588         par->ld_ss1 =
 589                 of_ioremap(&op->resource[0], LEO_OFF_LD_SS1,
 590                            0x1000, "leold ss1");
 591         par->lx_krn =
 592                 of_ioremap(&op->resource[0], LEO_OFF_LX_KRN,
 593                            0x1000, "leolx krn");
 594         par->cursor =
 595                 of_ioremap(&op->resource[0], LEO_OFF_LX_CURSOR,
 596                            sizeof(struct leo_cursor), "leolx cursor");
 597         info->screen_base =
 598                 of_ioremap(&op->resource[0], LEO_OFF_SS0,
 599                            0x800000, "leo ram");
 600         if (!par->lc_ss0_usr ||
 601             !par->ld_ss0 ||
 602             !par->ld_ss1 ||
 603             !par->lx_krn ||
 604             !par->cursor ||
 605             !info->screen_base)
 606                 goto out_unmap_regs;
 607
 608         info->flags = FBINFO_DEFAULT;
 609         info->fbops = &leo_ops;
 610         info->pseudo_palette = par->clut_data;
 611
 612         leo_init_wids(info);
 613         leo_init_hw(info);
 614
 615         leo_blank(FB_BLANK_UNBLANK, info);
 616
 617         if (fb_alloc_cmap(&info->cmap, 256, 0))
 618                 goto out_unmap_regs;
 619
 620         leo_init_fix(info, dp);
 621
 622         err = register_framebuffer(info);
 623         if (err < 0)
 624                 goto out_dealloc_cmap;
 625
 626         dev_set_drvdata(&op->dev, info);
 627
 628         printk(KERN_INFO "%s: leo at %lx:%lx\n",
 629                dp->full_name,
 630                par->which_io, par->physbase);
 631
 632         return 0;
 633
 634 out_dealloc_cmap:
 635         fb_dealloc_cmap(&info->cmap);
 636
 637 out_unmap_regs:
 638         leo_unmap_regs(op, info, par);
 639         framebuffer_release(info);
 640
 641 out_err:
 642         return err;
 643 }
 644
 645 static int __devexit leo_remove(struct of_device *op)
 646 {
 647         struct fb_info *info = dev_get_drvdata(&op->dev);
 648         struct leo_par *par = info->par;
 649
 650         unregister_framebuffer(info);
 651         fb_dealloc_cmap(&info->cmap);
 652
 653         leo_unmap_regs(op, info, par);
 654
 655         framebuffer_release(info);
 656
 657         dev_set_drvdata(&op->dev, NULL);
 658
 659         return 0;
 660 }
 661
 662 static const struct of_device_id leo_match[] = {
 663         {
 664                 .name = "SUNW,leo",
 665         },
 666         {},
 667 };
 668 MODULE_DEVICE_TABLE(of, leo_match);
 669
 670 static struct of_platform_driver leo_driver = {
 671         .name           = "leo",
 672         .match_table    = leo_match,
 673         .probe          = leo_probe,
 674         .remove         = __devexit_p(leo_remove),
 675 };
 676
 677 static int __init leo_init(void)
 678 {
 679         if (fb_get_options("leofb", NULL))
 680                 return -ENODEV;
 681
 682         return of_register_driver(&leo_driver, &of_bus_type);
 683 }
 684
 685 static void __exit leo_exit(void)
 686 {
 687         of_unregister_driver(&leo_driver);
 688 }
 689
 690 module_init(leo_init);
 691 module_exit(leo_exit);
 692
 693 MODULE_DESCRIPTION("framebuffer driver for LEO chipsets");
 694 MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
 695 MODULE_VERSION("2.0");
 696 MODULE_LICENSE("GPL");