drivers/video/fbdev/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/delay.h>
  15 #include <linux/init.h>
  16 #include <linux/fb.h>
  17 #include <linux/mm.h>
  18 #include <linux/of_device.h>
  19 #include <linux/io.h>
  20
  21 #include <asm/fbio.h>
  22
  23 #include "sbuslib.h"
  24
  25 /*
  26  * Local functions.
  27  */
  28
  29 static int leo_setcolreg(unsigned, unsigned, unsigned, unsigned,
  30                          unsigned, struct fb_info *);
  31 static int leo_blank(int, struct fb_info *);
  32
  33 static int leo_mmap(struct fb_info *, struct vm_area_struct *);
  34 static int leo_ioctl(struct fb_info *, unsigned int, unsigned long);
  35 static int leo_pan_display(struct fb_var_screeninfo *, struct fb_info *);
  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_pan_display         = leo_pan_display,
  46         .fb_fillrect            = cfb_fillrect,
  47         .fb_copyarea            = cfb_copyarea,
  48         .fb_imageblit           = cfb_imageblit,
  49         .fb_mmap                = leo_mmap,
  50         .fb_ioctl               = leo_ioctl,
  51 #ifdef CONFIG_COMPAT
  52         .fb_compat_ioctl        = sbusfb_compat_ioctl,
  53 #endif
  54 };
  55
  56 #define LEO_OFF_LC_SS0_KRN      0x00200000UL
  57 #define LEO_OFF_LC_SS0_USR      0x00201000UL
  58 #define LEO_OFF_LC_SS1_KRN      0x01200000UL
  59 #define LEO_OFF_LC_SS1_USR      0x01201000UL
  60 #define LEO_OFF_LD_SS0          0x00400000UL
  61 #define LEO_OFF_LD_SS1          0x01400000UL
  62 #define LEO_OFF_LD_GBL          0x00401000UL
  63 #define LEO_OFF_LX_KRN          0x00600000UL
  64 #define LEO_OFF_LX_CURSOR       0x00601000UL
  65 #define LEO_OFF_SS0             0x00800000UL
  66 #define LEO_OFF_SS1             0x01800000UL
  67 #define LEO_OFF_UNK             0x00602000UL
  68 #define LEO_OFF_UNK2            0x00000000UL
  69
  70 #define LEO_CUR_ENABLE          0x00000080
  71 #define LEO_CUR_UPDATE          0x00000030
  72 #define LEO_CUR_PROGRESS        0x00000006
  73 #define LEO_CUR_UPDATECMAP      0x00000003
  74
  75 #define LEO_CUR_TYPE_MASK       0x00000000
  76 #define LEO_CUR_TYPE_IMAGE      0x00000020
  77 #define LEO_CUR_TYPE_CMAP       0x00000050
  78
  79 struct leo_cursor {
  80         u8      xxx0[16];
  81         u32     cur_type;
  82         u32     cur_misc;
  83         u32     cur_cursxy;
  84         u32     cur_data;
  85 };
  86
  87 #define LEO_KRN_TYPE_CLUT0      0x00001000
  88 #define LEO_KRN_TYPE_CLUT1      0x00001001
  89 #define LEO_KRN_TYPE_CLUT2      0x00001002
  90 #define LEO_KRN_TYPE_WID        0x00001003
  91 #define LEO_KRN_TYPE_UNK        0x00001006
  92 #define LEO_KRN_TYPE_VIDEO      0x00002003
  93 #define LEO_KRN_TYPE_CLUTDATA   0x00004000
  94 #define LEO_KRN_CSR_ENABLE      0x00000008
  95 #define LEO_KRN_CSR_PROGRESS    0x00000004
  96 #define LEO_KRN_CSR_UNK         0x00000002
  97 #define LEO_KRN_CSR_UNK2        0x00000001
  98
  99 struct leo_lx_krn {
 100         u32     krn_type;
 101         u32     krn_csr;
 102         u32     krn_value;
 103 };
 104
 105 struct leo_lc_ss0_krn {
 106         u32     misc;
 107         u8      xxx0[0x800-4];
 108         u32     rev;
 109 };
 110
 111 struct leo_lc_ss0_usr {
 112         u32     csr;
 113         u32     addrspace;
 114         u32     fontmsk;
 115         u32     fontt;
 116         u32     extent;
 117         u32     src;
 118         u32     dst;
 119         u32     copy;
 120         u32     fill;
 121 };
 122
 123 struct leo_lc_ss1_krn {
 124         u8      unknown;
 125 };
 126
 127 struct leo_lc_ss1_usr {
 128         u8      unknown;
 129 };
 130
 131 struct leo_ld_ss0 {
 132         u8      xxx0[0xe00];
 133         u32     csr;
 134         u32     wid;
 135         u32     wmask;
 136         u32     widclip;
 137         u32     vclipmin;
 138         u32     vclipmax;
 139         u32     pickmin;        /* SS1 only */
 140         u32     pickmax;        /* SS1 only */
 141         u32     fg;
 142         u32     bg;
 143         u32     src;            /* Copy/Scroll (SS0 only) */
 144         u32     dst;            /* Copy/Scroll/Fill (SS0 only) */
 145         u32     extent;         /* Copy/Scroll/Fill size (SS0 only) */
 146         u32     xxx1[3];
 147         u32     setsem;         /* SS1 only */
 148         u32     clrsem;         /* SS1 only */
 149         u32     clrpick;        /* SS1 only */
 150         u32     clrdat;         /* SS1 only */
 151         u32     alpha;          /* SS1 only */
 152         u8      xxx2[0x2c];
 153         u32     winbg;
 154         u32     planemask;
 155         u32     rop;
 156         u32     z;
 157         u32     dczf;           /* SS1 only */
 158         u32     dczb;           /* SS1 only */
 159         u32     dcs;            /* SS1 only */
 160         u32     dczs;           /* SS1 only */
 161         u32     pickfb;         /* SS1 only */
 162         u32     pickbb;         /* SS1 only */
 163         u32     dcfc;           /* SS1 only */
 164         u32     forcecol;       /* SS1 only */
 165         u32     door[8];        /* SS1 only */
 166         u32     pick[5];        /* SS1 only */
 167 };
 168
 169 #define LEO_SS1_MISC_ENABLE     0x00000001
 170 #define LEO_SS1_MISC_STEREO     0x00000002
 171 struct leo_ld_ss1 {
 172         u8      xxx0[0xef4];
 173         u32     ss1_misc;
 174 };
 175
 176 struct leo_ld_gbl {
 177         u8      unknown;
 178 };
 179
 180 struct leo_par {
 181         spinlock_t              lock;
 182         struct leo_lx_krn       __iomem *lx_krn;
 183         struct leo_lc_ss0_usr   __iomem *lc_ss0_usr;
 184         struct leo_ld_ss0       __iomem *ld_ss0;
 185         struct leo_ld_ss1       __iomem *ld_ss1;
 186         struct leo_cursor       __iomem *cursor;
 187         u32                     extent;
 188         u32                     clut_data[256];
 189
 190         u32                     flags;
 191 #define LEO_FLAG_BLANKED        0x00000001
 192
 193         unsigned long           which_io;
 194 };
 195
 196 static void leo_wait(struct leo_lx_krn __iomem *lx_krn)
 197 {
 198         int i;
 199
 200         for (i = 0;
 201              (sbus_readl(&lx_krn->krn_csr) & LEO_KRN_CSR_PROGRESS) &&
 202              i < 300000;
 203              i++)
 204                 udelay(1); /* Busy wait at most 0.3 sec */
 205         return;
 206 }
 207
 208 static void leo_switch_from_graph(struct fb_info *info)
 209 {
 210         struct leo_par *par = (struct leo_par *) info->par;
 211         struct leo_ld_ss0 __iomem *ss = par->ld_ss0;
 212         struct leo_cursor __iomem *cursor = par->cursor;
 213         unsigned long flags;
 214         u32 val;
 215
 216         spin_lock_irqsave(&par->lock, flags);
 217
 218         par->extent = ((info->var.xres - 1) |
 219                        ((info->var.yres - 1) << 16));
 220
 221         sbus_writel(0xffffffff, &ss->wid);
 222         sbus_writel(0xffff, &ss->wmask);
 223         sbus_writel(0, &ss->vclipmin);
 224         sbus_writel(par->extent, &ss->vclipmax);
 225         sbus_writel(0, &ss->fg);
 226         sbus_writel(0xff000000, &ss->planemask);
 227         sbus_writel(0x310850, &ss->rop);
 228         sbus_writel(0, &ss->widclip);
 229         sbus_writel((info->var.xres-1) | ((info->var.yres-1) << 11),
 230                     &par->lc_ss0_usr->extent);
 231         sbus_writel(4, &par->lc_ss0_usr->addrspace);
 232         sbus_writel(0x80000000, &par->lc_ss0_usr->fill);
 233         sbus_writel(0, &par->lc_ss0_usr->fontt);
 234         do {
 235                 val = sbus_readl(&par->lc_ss0_usr->csr);
 236         } while (val & 0x20000000);
 237
 238         /* setup screen buffer for cfb_* functions */
 239         sbus_writel(1, &ss->wid);
 240         sbus_writel(0x00ffffff, &ss->planemask);
 241         sbus_writel(0x310b90, &ss->rop);
 242         sbus_writel(0, &par->lc_ss0_usr->addrspace);
 243
 244         /* hide cursor */
 245         sbus_writel(sbus_readl(&cursor->cur_misc) & ~LEO_CUR_ENABLE, &cursor->cur_misc);
 246
 247         spin_unlock_irqrestore(&par->lock, flags);
 248 }
 249
 250 static int leo_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
 251 {
 252         /* We just use this to catch switches out of
 253          * graphics mode.
 254          */
 255         leo_switch_from_graph(info);
 256
 257         if (var->xoffset || var->yoffset || var->vmode)
 258                 return -EINVAL;
 259         return 0;
 260 }
 261
 262 /**
 263  *      leo_setcolreg - Optional function. Sets a color register.
 264  *      @regno: boolean, 0 copy local, 1 get_user() function
 265  *      @red: frame buffer colormap structure
 266  *      @green: The green value which can be up to 16 bits wide
 267  *      @blue:  The blue value which can be up to 16 bits wide.
 268  *      @transp: If supported the alpha value which can be up to 16 bits wide.
 269  *      @info: frame buffer info structure
 270  */
 271 static int leo_setcolreg(unsigned regno,
 272                          unsigned red, unsigned green, unsigned blue,
 273                          unsigned transp, struct fb_info *info)
 274 {
 275         struct leo_par *par = (struct leo_par *) info->par;
 276         struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
 277         unsigned long flags;
 278         u32 val;
 279         int i;
 280
 281         if (regno >= 256)
 282                 return 1;
 283
 284         red >>= 8;
 285         green >>= 8;
 286         blue >>= 8;
 287
 288         par->clut_data[regno] = red | (green << 8) | (blue << 16);
 289
 290         spin_lock_irqsave(&par->lock, flags);
 291
 292         leo_wait(lx_krn);
 293
 294         sbus_writel(LEO_KRN_TYPE_CLUTDATA, &lx_krn->krn_type);
 295         for (i = 0; i < 256; i++)
 296                 sbus_writel(par->clut_data[i], &lx_krn->krn_value);
 297         sbus_writel(LEO_KRN_TYPE_CLUT0, &lx_krn->krn_type);
 298
 299         val = sbus_readl(&lx_krn->krn_csr);
 300         val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
 301         sbus_writel(val, &lx_krn->krn_csr);
 302
 303         spin_unlock_irqrestore(&par->lock, flags);
 304
 305         return 0;
 306 }
 307
 308 /**
 309  *      leo_blank - Optional function.  Blanks the display.
 310  *      @blank_mode: the blank mode we want.
 311  *      @info: frame buffer structure that represents a single frame buffer
 312  */
 313 static int leo_blank(int blank, struct fb_info *info)
 314 {
 315         struct leo_par *par = (struct leo_par *) info->par;
 316         struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
 317         unsigned long flags;
 318         u32 val;
 319
 320         spin_lock_irqsave(&par->lock, flags);
 321
 322         switch (blank) {
 323         case FB_BLANK_UNBLANK: /* Unblanking */
 324                 val = sbus_readl(&lx_krn->krn_csr);
 325                 val |= LEO_KRN_CSR_ENABLE;
 326                 sbus_writel(val, &lx_krn->krn_csr);
 327                 par->flags &= ~LEO_FLAG_BLANKED;
 328                 break;
 329
 330         case FB_BLANK_NORMAL: /* Normal blanking */
 331         case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
 332         case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
 333         case FB_BLANK_POWERDOWN: /* Poweroff */
 334                 val = sbus_readl(&lx_krn->krn_csr);
 335                 val &= ~LEO_KRN_CSR_ENABLE;
 336                 sbus_writel(val, &lx_krn->krn_csr);
 337                 par->flags |= LEO_FLAG_BLANKED;
 338                 break;
 339         }
 340
 341         spin_unlock_irqrestore(&par->lock, flags);
 342
 343         return 0;
 344 }
 345
 346 static struct sbus_mmap_map leo_mmap_map[] = {
 347         {
 348                 .voff   = LEO_SS0_MAP,
 349                 .poff   = LEO_OFF_SS0,
 350                 .size   = 0x800000
 351         },
 352         {
 353                 .voff   = LEO_LC_SS0_USR_MAP,
 354                 .poff   = LEO_OFF_LC_SS0_USR,
 355                 .size   = 0x1000
 356         },
 357         {
 358                 .voff   = LEO_LD_SS0_MAP,
 359                 .poff   = LEO_OFF_LD_SS0,
 360                 .size   = 0x1000
 361         },
 362         {
 363                 .voff   = LEO_LX_CURSOR_MAP,
 364                 .poff   = LEO_OFF_LX_CURSOR,
 365                 .size   = 0x1000
 366         },
 367         {
 368                 .voff   = LEO_SS1_MAP,
 369                 .poff   = LEO_OFF_SS1,
 370                 .size   = 0x800000
 371         },
 372         {
 373                 .voff   = LEO_LC_SS1_USR_MAP,
 374                 .poff   = LEO_OFF_LC_SS1_USR,
 375                 .size   = 0x1000
 376         },
 377         {
 378                 .voff   = LEO_LD_SS1_MAP,
 379                 .poff   = LEO_OFF_LD_SS1,
 380                 .size   = 0x1000
 381         },
 382         {
 383                 .voff   = LEO_UNK_MAP,
 384                 .poff   = LEO_OFF_UNK,
 385                 .size   = 0x1000
 386         },
 387         {
 388                 .voff   = LEO_LX_KRN_MAP,
 389                 .poff   = LEO_OFF_LX_KRN,
 390                 .size   = 0x1000
 391         },
 392         {
 393                 .voff   = LEO_LC_SS0_KRN_MAP,
 394                 .poff   = LEO_OFF_LC_SS0_KRN,
 395                 .size   = 0x1000
 396         },
 397         {
 398                 .voff   = LEO_LC_SS1_KRN_MAP,
 399                 .poff   = LEO_OFF_LC_SS1_KRN,
 400                 .size   = 0x1000
 401         },
 402         {
 403                 .voff   = LEO_LD_GBL_MAP,
 404                 .poff   = LEO_OFF_LD_GBL,
 405                 .size   = 0x1000
 406         },
 407         {
 408                 .voff   = LEO_UNK2_MAP,
 409                 .poff   = LEO_OFF_UNK2,
 410                 .size   = 0x100000
 411         },
 412         { .size = 0 }
 413 };
 414
 415 static int leo_mmap(struct fb_info *info, struct vm_area_struct *vma)
 416 {
 417         struct leo_par *par = (struct leo_par *)info->par;
 418
 419         return sbusfb_mmap_helper(leo_mmap_map,
 420                                   info->fix.smem_start, info->fix.smem_len,
 421                                   par->which_io, vma);
 422 }
 423
 424 static int leo_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
 425 {
 426         return sbusfb_ioctl_helper(cmd, arg, info,
 427                                    FBTYPE_SUNLEO, 32, info->fix.smem_len);
 428 }
 429
 430 /*
 431  *  Initialisation
 432  */
 433
 434 static void
 435 leo_init_fix(struct fb_info *info, struct device_node *dp)
 436 {
 437         strlcpy(info->fix.id, dp->name, sizeof(info->fix.id));
 438
 439         info->fix.type = FB_TYPE_PACKED_PIXELS;
 440         info->fix.visual = FB_VISUAL_TRUECOLOR;
 441
 442         info->fix.line_length = 8192;
 443
 444         info->fix.accel = FB_ACCEL_SUN_LEO;
 445 }
 446
 447 static void leo_wid_put(struct fb_info *info, struct fb_wid_list *wl)
 448 {
 449         struct leo_par *par = (struct leo_par *) info->par;
 450         struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
 451         struct fb_wid_item *wi;
 452         unsigned long flags;
 453         u32 val;
 454         int i, j;
 455
 456         spin_lock_irqsave(&par->lock, flags);
 457
 458         leo_wait(lx_krn);
 459
 460         for (i = 0, wi = wl->wl_list; i < wl->wl_count; i++, wi++) {
 461                 switch (wi->wi_type) {
 462                 case FB_WID_DBL_8:
 463                         j = (wi->wi_index & 0xf) + 0x40;
 464                         break;
 465
 466                 case FB_WID_DBL_24:
 467                         j = wi->wi_index & 0x3f;
 468                         break;
 469
 470                 default:
 471                         continue;
 472                 }
 473                 sbus_writel(0x5800 + j, &lx_krn->krn_type);
 474                 sbus_writel(wi->wi_values[0], &lx_krn->krn_value);
 475         }
 476         sbus_writel(LEO_KRN_TYPE_WID, &lx_krn->krn_type);
 477
 478         val = sbus_readl(&lx_krn->krn_csr);
 479         val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
 480         sbus_writel(val, &lx_krn->krn_csr);
 481
 482         spin_unlock_irqrestore(&par->lock, flags);
 483 }
 484
 485 static void leo_init_wids(struct fb_info *info)
 486 {
 487         struct fb_wid_item wi;
 488         struct fb_wid_list wl;
 489
 490         wl.wl_count = 1;
 491         wl.wl_list = &wi;
 492         wi.wi_type = FB_WID_DBL_8;
 493         wi.wi_index = 0;
 494         wi.wi_values [0] = 0x2c0;
 495         leo_wid_put(info, &wl);
 496         wi.wi_index = 1;
 497         wi.wi_values [0] = 0x30;
 498         leo_wid_put(info, &wl);
 499         wi.wi_index = 2;
 500         wi.wi_values [0] = 0x20;
 501         leo_wid_put(info, &wl);
 502         wi.wi_type = FB_WID_DBL_24;
 503         wi.wi_index = 1;
 504         wi.wi_values [0] = 0x30;
 505         leo_wid_put(info, &wl);
 506 }
 507
 508 static void leo_init_hw(struct fb_info *info)
 509 {
 510         struct leo_par *par = (struct leo_par *) info->par;
 511         u32 val;
 512
 513         val = sbus_readl(&par->ld_ss1->ss1_misc);
 514         val |= LEO_SS1_MISC_ENABLE;
 515         sbus_writel(val, &par->ld_ss1->ss1_misc);
 516
 517         leo_switch_from_graph(info);
 518 }
 519
 520 static void leo_fixup_var_rgb(struct fb_var_screeninfo *var)
 521 {
 522         var->red.offset = 0;
 523         var->red.length = 8;
 524         var->green.offset = 8;
 525         var->green.length = 8;
 526         var->blue.offset = 16;
 527         var->blue.length = 8;
 528         var->transp.offset = 0;
 529         var->transp.length = 0;
 530 }
 531
 532 static void leo_unmap_regs(struct platform_device *op, struct fb_info *info,
 533                            struct leo_par *par)
 534 {
 535         if (par->lc_ss0_usr)
 536                 of_iounmap(&op->resource[0], par->lc_ss0_usr, 0x1000);
 537         if (par->ld_ss0)
 538                 of_iounmap(&op->resource[0], par->ld_ss0, 0x1000);
 539         if (par->ld_ss1)
 540                 of_iounmap(&op->resource[0], par->ld_ss1, 0x1000);
 541         if (par->lx_krn)
 542                 of_iounmap(&op->resource[0], par->lx_krn, 0x1000);
 543         if (par->cursor)
 544                 of_iounmap(&op->resource[0],
 545                            par->cursor, sizeof(struct leo_cursor));
 546         if (info->screen_base)
 547                 of_iounmap(&op->resource[0], info->screen_base, 0x800000);
 548 }
 549
 550 static int leo_probe(struct platform_device *op)
 551 {
 552         struct device_node *dp = op->dev.of_node;
 553         struct fb_info *info;
 554         struct leo_par *par;
 555         int linebytes, err;
 556
 557         info = framebuffer_alloc(sizeof(struct leo_par), &op->dev);
 558
 559         err = -ENOMEM;
 560         if (!info)
 561                 goto out_err;
 562         par = info->par;
 563
 564         spin_lock_init(&par->lock);
 565
 566         info->fix.smem_start = op->resource[0].start;
 567         par->which_io = op->resource[0].flags & IORESOURCE_BITS;
 568
 569         sbusfb_fill_var(&info->var, dp, 32);
 570         leo_fixup_var_rgb(&info->var);
 571
 572         linebytes = of_getintprop_default(dp, "linebytes",
 573                                           info->var.xres);
 574         info->fix.smem_len = PAGE_ALIGN(linebytes * info->var.yres);
 575
 576         par->lc_ss0_usr =
 577                 of_ioremap(&op->resource[0], LEO_OFF_LC_SS0_USR,
 578                            0x1000, "leolc ss0usr");
 579         par->ld_ss0 =
 580                 of_ioremap(&op->resource[0], LEO_OFF_LD_SS0,
 581                            0x1000, "leold ss0");
 582         par->ld_ss1 =
 583                 of_ioremap(&op->resource[0], LEO_OFF_LD_SS1,
 584                            0x1000, "leold ss1");
 585         par->lx_krn =
 586                 of_ioremap(&op->resource[0], LEO_OFF_LX_KRN,
 587                            0x1000, "leolx krn");
 588         par->cursor =
 589                 of_ioremap(&op->resource[0], LEO_OFF_LX_CURSOR,
 590                            sizeof(struct leo_cursor), "leolx cursor");
 591         info->screen_base =
 592                 of_ioremap(&op->resource[0], LEO_OFF_SS0,
 593                            0x800000, "leo ram");
 594         if (!par->lc_ss0_usr ||
 595             !par->ld_ss0 ||
 596             !par->ld_ss1 ||
 597             !par->lx_krn ||
 598             !par->cursor ||
 599             !info->screen_base)
 600                 goto out_unmap_regs;
 601
 602         info->flags = FBINFO_DEFAULT;
 603         info->fbops = &leo_ops;
 604         info->pseudo_palette = par->clut_data;
 605
 606         leo_init_wids(info);
 607         leo_init_hw(info);
 608
 609         leo_blank(FB_BLANK_UNBLANK, info);
 610
 611         if (fb_alloc_cmap(&info->cmap, 256, 0))
 612                 goto out_unmap_regs;
 613
 614         leo_init_fix(info, dp);
 615
 616         err = register_framebuffer(info);
 617         if (err < 0)
 618                 goto out_dealloc_cmap;
 619
 620         dev_set_drvdata(&op->dev, info);
 621
 622         printk(KERN_INFO "%pOF: leo at %lx:%lx\n",
 623                dp,
 624                par->which_io, info->fix.smem_start);
 625
 626         return 0;
 627
 628 out_dealloc_cmap:
 629         fb_dealloc_cmap(&info->cmap);
 630
 631 out_unmap_regs:
 632         leo_unmap_regs(op, info, par);
 633         framebuffer_release(info);
 634
 635 out_err:
 636         return err;
 637 }
 638
 639 static int leo_remove(struct platform_device *op)
 640 {
 641         struct fb_info *info = dev_get_drvdata(&op->dev);
 642         struct leo_par *par = info->par;
 643
 644         unregister_framebuffer(info);
 645         fb_dealloc_cmap(&info->cmap);
 646
 647         leo_unmap_regs(op, info, par);
 648
 649         framebuffer_release(info);
 650
 651         return 0;
 652 }
 653
 654 static const struct of_device_id leo_match[] = {
 655         {
 656                 .name = "SUNW,leo",
 657         },
 658         {},
 659 };
 660 MODULE_DEVICE_TABLE(of, leo_match);
 661
 662 static struct platform_driver leo_driver = {
 663         .driver = {
 664                 .name = "leo",
 665                 .of_match_table = leo_match,
 666         },
 667         .probe          = leo_probe,
 668         .remove         = leo_remove,
 669 };
 670
 671 static int __init leo_init(void)
 672 {
 673         if (fb_get_options("leofb", NULL))
 674                 return -ENODEV;
 675
 676         return platform_driver_register(&leo_driver);
 677 }
 678
 679 static void __exit leo_exit(void)
 680 {
 681         platform_driver_unregister(&leo_driver);
 682 }
 683
 684 module_init(leo_init);
 685 module_exit(leo_exit);
 686
 687 MODULE_DESCRIPTION("framebuffer driver for LEO chipsets");
 688 MODULE_AUTHOR("David S. Miller <davem@davemloft.net>");
 689 MODULE_VERSION("2.0");
 690 MODULE_LICENSE("GPL");