drivers/video/leo.c

   1 /* leo.c: LEO frame buffer driver
   2  *
   3  * Copyright (C) 2003 David S. Miller (davem@redhat.com)
   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
  20 #include <asm/io.h>
  21 #include <asm/sbus.h>
  22 #include <asm/oplib.h>
  23 #include <asm/fbio.h>
  24
  25 #include "sbuslib.h"
  26
  27 /*
  28  * Local functions.
  29  */
  30
  31 static int leo_setcolreg(unsigned, unsigned, unsigned, unsigned,
  32                          unsigned, struct fb_info *);
  33 static int leo_blank(int, struct fb_info *);
  34
  35 static int leo_mmap(struct fb_info *, struct vm_area_struct *);
  36 static int leo_ioctl(struct fb_info *, unsigned int, unsigned long);
  37 static int leo_pan_display(struct fb_var_screeninfo *, struct fb_info *);
  38
  39 /*
  40  *  Frame buffer operations
  41  */
  42
  43 static struct fb_ops leo_ops = {
  44         .owner                  = THIS_MODULE,
  45         .fb_setcolreg           = leo_setcolreg,
  46         .fb_blank               = leo_blank,
  47         .fb_pan_display         = leo_pan_display,
  48         .fb_fillrect            = cfb_fillrect,
  49         .fb_copyarea            = cfb_copyarea,
  50         .fb_imageblit           = cfb_imageblit,
  51         .fb_mmap                = leo_mmap,
  52         .fb_ioctl               = leo_ioctl,
  53 #ifdef CONFIG_COMPAT
  54         .fb_compat_ioctl        = sbusfb_compat_ioctl,
  55 #endif
  56 };
  57
  58 #define LEO_OFF_LC_SS0_KRN      0x00200000UL
  59 #define LEO_OFF_LC_SS0_USR      0x00201000UL
  60 #define LEO_OFF_LC_SS1_KRN      0x01200000UL
  61 #define LEO_OFF_LC_SS1_USR      0x01201000UL
  62 #define LEO_OFF_LD_SS0          0x00400000UL
  63 #define LEO_OFF_LD_SS1          0x01400000UL
  64 #define LEO_OFF_LD_GBL          0x00401000UL
  65 #define LEO_OFF_LX_KRN          0x00600000UL
  66 #define LEO_OFF_LX_CURSOR       0x00601000UL
  67 #define LEO_OFF_SS0             0x00800000UL
  68 #define LEO_OFF_SS1             0x01800000UL
  69 #define LEO_OFF_UNK             0x00602000UL
  70 #define LEO_OFF_UNK2            0x00000000UL
  71
  72 #define LEO_CUR_ENABLE          0x00000080
  73 #define LEO_CUR_UPDATE          0x00000030
  74 #define LEO_CUR_PROGRESS        0x00000006
  75 #define LEO_CUR_UPDATECMAP      0x00000003
  76
  77 #define LEO_CUR_TYPE_MASK       0x00000000
  78 #define LEO_CUR_TYPE_IMAGE      0x00000020
  79 #define LEO_CUR_TYPE_CMAP       0x00000050
  80
  81 struct leo_cursor {
  82         u8              xxx0[16];
  83         volatile u32    cur_type;
  84         volatile u32    cur_misc;
  85         volatile u32    cur_cursxy;
  86         volatile u32    cur_data;
  87 };
  88
  89 #define LEO_KRN_TYPE_CLUT0      0x00001000
  90 #define LEO_KRN_TYPE_CLUT1      0x00001001
  91 #define LEO_KRN_TYPE_CLUT2      0x00001002
  92 #define LEO_KRN_TYPE_WID        0x00001003
  93 #define LEO_KRN_TYPE_UNK        0x00001006
  94 #define LEO_KRN_TYPE_VIDEO      0x00002003
  95 #define LEO_KRN_TYPE_CLUTDATA   0x00004000
  96 #define LEO_KRN_CSR_ENABLE      0x00000008
  97 #define LEO_KRN_CSR_PROGRESS    0x00000004
  98 #define LEO_KRN_CSR_UNK         0x00000002
  99 #define LEO_KRN_CSR_UNK2        0x00000001
 100
 101 struct leo_lx_krn {
 102         volatile u32    krn_type;
 103         volatile u32    krn_csr;
 104         volatile u32    krn_value;
 105 };
 106
 107 struct leo_lc_ss0_krn {
 108         volatile u32    misc;
 109         u8              xxx0[0x800-4];
 110         volatile u32    rev;
 111 };
 112
 113 struct leo_lc_ss0_usr {
 114         volatile u32    csr;
 115         volatile u32    addrspace;
 116         volatile u32    fontmsk;
 117         volatile u32    fontt;
 118         volatile u32    extent;
 119         volatile u32    src;
 120         u32             dst;
 121         volatile u32    copy;
 122         volatile u32    fill;
 123 };
 124
 125 struct leo_lc_ss1_krn {
 126         u8      unknown;
 127 };
 128
 129 struct leo_lc_ss1_usr {
 130         u8      unknown;
 131 };
 132
 133 struct leo_ld {
 134         u8              xxx0[0xe00];
 135         volatile u32    csr;
 136         volatile u32    wid;
 137         volatile u32    wmask;
 138         volatile u32    widclip;
 139         volatile u32    vclipmin;
 140         volatile u32    vclipmax;
 141         volatile u32    pickmin;        /* SS1 only */
 142         volatile u32    pickmax;        /* SS1 only */
 143         volatile u32    fg;
 144         volatile u32    bg;
 145         volatile u32    src;            /* Copy/Scroll (SS0 only) */
 146         volatile u32    dst;            /* Copy/Scroll/Fill (SS0 only) */
 147         volatile u32    extent;         /* Copy/Scroll/Fill size (SS0 only) */
 148         u32             xxx1[3];
 149         volatile u32    setsem;         /* SS1 only */
 150         volatile u32    clrsem;         /* SS1 only */
 151         volatile u32    clrpick;        /* SS1 only */
 152         volatile u32    clrdat;         /* SS1 only */
 153         volatile u32    alpha;          /* SS1 only */
 154         u8              xxx2[0x2c];
 155         volatile u32    winbg;
 156         volatile u32    planemask;
 157         volatile u32    rop;
 158         volatile u32    z;
 159         volatile u32    dczf;           /* SS1 only */
 160         volatile u32    dczb;           /* SS1 only */
 161         volatile u32    dcs;            /* SS1 only */
 162         volatile u32    dczs;           /* SS1 only */
 163         volatile u32    pickfb;         /* SS1 only */
 164         volatile u32    pickbb;         /* SS1 only */
 165         volatile u32    dcfc;           /* SS1 only */
 166         volatile u32    forcecol;       /* SS1 only */
 167         volatile u32    door[8];        /* SS1 only */
 168         volatile u32    pick[5];        /* SS1 only */
 169 };
 170
 171 #define LEO_SS1_MISC_ENABLE     0x00000001
 172 #define LEO_SS1_MISC_STEREO     0x00000002
 173 struct leo_ld_ss1 {
 174         u8              xxx0[0xef4];
 175         volatile u32    ss1_misc;
 176 };
 177
 178 struct leo_ld_gbl {
 179         u8      unknown;
 180 };
 181
 182 struct leo_par {
 183         spinlock_t              lock;
 184         struct leo_lx_krn       __iomem *lx_krn;
 185         struct leo_lc_ss0_usr   __iomem *lc_ss0_usr;
 186         struct leo_ld_ss0       __iomem *ld_ss0;
 187         struct leo_ld_ss1       __iomem *ld_ss1;
 188         struct leo_cursor       __iomem *cursor;
 189         u32                     extent;
 190         u32                     clut_data[256];
 191
 192         u32                     flags;
 193 #define LEO_FLAG_BLANKED        0x00000001
 194
 195         unsigned long           physbase;
 196         unsigned long           fbsize;
 197
 198         struct sbus_dev         *sdev;
 199 };
 200
 201 static void leo_wait(struct leo_lx_krn __iomem *lx_krn)
 202 {
 203         int i;
 204
 205         for (i = 0;
 206              (sbus_readl(&lx_krn->krn_csr) & LEO_KRN_CSR_PROGRESS) && i < 300000;
 207              i++)
 208                 udelay (1); /* Busy wait at most 0.3 sec */
 209         return;
 210 }
 211
 212 /**
 213  *      leo_setcolreg - Optional function. Sets a color register.
 214  *      @regno: boolean, 0 copy local, 1 get_user() function
 215  *      @red: frame buffer colormap structure
 216  *      @green: The green value which can be up to 16 bits wide
 217  *      @blue:  The blue value which can be up to 16 bits wide.
 218  *      @transp: If supported the alpha value which can be up to 16 bits wide.
 219  *      @info: frame buffer info structure
 220  */
 221 static int leo_setcolreg(unsigned regno,
 222                          unsigned red, unsigned green, unsigned blue,
 223                          unsigned transp, struct fb_info *info)
 224 {
 225         struct leo_par *par = (struct leo_par *) info->par;
 226         struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
 227         unsigned long flags;
 228         u32 val;
 229         int i;
 230
 231         if (regno >= 256)
 232                 return 1;
 233
 234         red >>= 8;
 235         green >>= 8;
 236         blue >>= 8;
 237
 238         par->clut_data[regno] = red | (green << 8) | (blue << 16);
 239
 240         spin_lock_irqsave(&par->lock, flags);
 241
 242         leo_wait(lx_krn);
 243
 244         sbus_writel(LEO_KRN_TYPE_CLUTDATA, &lx_krn->krn_type);
 245         for (i = 0; i < 256; i++)
 246                 sbus_writel(par->clut_data[i], &lx_krn->krn_value);
 247         sbus_writel(LEO_KRN_TYPE_CLUT0, &lx_krn->krn_type);
 248
 249         val = sbus_readl(&lx_krn->krn_csr);
 250         val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
 251         sbus_writel(val, &lx_krn->krn_csr);
 252
 253         spin_unlock_irqrestore(&par->lock, flags);
 254
 255         return 0;
 256 }
 257
 258 /**
 259  *      leo_blank - Optional function.  Blanks the display.
 260  *      @blank_mode: the blank mode we want.
 261  *      @info: frame buffer structure that represents a single frame buffer
 262  */
 263 static int leo_blank(int blank, struct fb_info *info)
 264 {
 265         struct leo_par *par = (struct leo_par *) info->par;
 266         struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
 267         unsigned long flags;
 268         u32 val;
 269
 270         spin_lock_irqsave(&par->lock, flags);
 271
 272         switch (blank) {
 273         case FB_BLANK_UNBLANK: /* Unblanking */
 274                 val = sbus_readl(&lx_krn->krn_csr);
 275                 val |= LEO_KRN_CSR_ENABLE;
 276                 sbus_writel(val, &lx_krn->krn_csr);
 277                 par->flags &= ~LEO_FLAG_BLANKED;
 278                 break;
 279
 280         case FB_BLANK_NORMAL: /* Normal blanking */
 281         case FB_BLANK_VSYNC_SUSPEND: /* VESA blank (vsync off) */
 282         case FB_BLANK_HSYNC_SUSPEND: /* VESA blank (hsync off) */
 283         case FB_BLANK_POWERDOWN: /* Poweroff */
 284                 val = sbus_readl(&lx_krn->krn_csr);
 285                 val &= ~LEO_KRN_CSR_ENABLE;
 286                 sbus_writel(val, &lx_krn->krn_csr);
 287                 par->flags |= LEO_FLAG_BLANKED;
 288                 break;
 289         }
 290
 291         spin_unlock_irqrestore(&par->lock, flags);
 292
 293         return 0;
 294 }
 295
 296 static struct sbus_mmap_map leo_mmap_map[] = {
 297         {
 298                 .voff   = LEO_SS0_MAP,
 299                 .poff   = LEO_OFF_SS0,
 300                 .size   = 0x800000
 301         },
 302         {
 303                 .voff   = LEO_LC_SS0_USR_MAP,
 304                 .poff   = LEO_OFF_LC_SS0_USR,
 305                 .size   = 0x1000
 306         },
 307         {
 308                 .voff   = LEO_LD_SS0_MAP,
 309                 .poff   = LEO_OFF_LD_SS0,
 310                 .size   = 0x1000
 311         },
 312         {
 313                 .voff   = LEO_LX_CURSOR_MAP,
 314                 .poff   = LEO_OFF_LX_CURSOR,
 315                 .size   = 0x1000
 316         },
 317         {
 318                 .voff   = LEO_SS1_MAP,
 319                 .poff   = LEO_OFF_SS1,
 320                 .size   = 0x800000
 321         },
 322         {
 323                 .voff   = LEO_LC_SS1_USR_MAP,
 324                 .poff   = LEO_OFF_LC_SS1_USR,
 325                 .size   = 0x1000
 326         },
 327         {
 328                 .voff   = LEO_LD_SS1_MAP,
 329                 .poff   = LEO_OFF_LD_SS1,
 330                 .size   = 0x1000
 331         },
 332         {
 333                 .voff   = LEO_UNK_MAP,
 334                 .poff   = LEO_OFF_UNK,
 335                 .size   = 0x1000
 336         },
 337         {
 338                 .voff   = LEO_LX_KRN_MAP,
 339                 .poff   = LEO_OFF_LX_KRN,
 340                 .size   = 0x1000
 341         },
 342         {
 343                 .voff   = LEO_LC_SS0_KRN_MAP,
 344                 .poff   = LEO_OFF_LC_SS0_KRN,
 345                 .size   = 0x1000
 346         },
 347         {
 348                 .voff   = LEO_LC_SS1_KRN_MAP,
 349                 .poff   = LEO_OFF_LC_SS1_KRN,
 350                 .size   = 0x1000
 351         },
 352         {
 353                 .voff   = LEO_LD_GBL_MAP,
 354                 .poff   = LEO_OFF_LD_GBL,
 355                 .size   = 0x1000
 356         },
 357         {
 358                 .voff   = LEO_UNK2_MAP,
 359                 .poff   = LEO_OFF_UNK2,
 360                 .size   = 0x100000
 361         },
 362         { .size = 0 }
 363 };
 364
 365 static int leo_mmap(struct fb_info *info, struct vm_area_struct *vma)
 366 {
 367         struct leo_par *par = (struct leo_par *)info->par;
 368
 369         return sbusfb_mmap_helper(leo_mmap_map,
 370                                   par->physbase, par->fbsize,
 371                                   par->sdev->reg_addrs[0].which_io,
 372                                   vma);
 373 }
 374
 375 static int leo_ioctl(struct fb_info *info, unsigned int cmd, unsigned long arg)
 376 {
 377         struct leo_par *par = (struct leo_par *) info->par;
 378
 379         return sbusfb_ioctl_helper(cmd, arg, info,
 380                                    FBTYPE_SUNLEO, 32, par->fbsize);
 381 }
 382
 383 /*
 384  *  Initialisation
 385  */
 386
 387 static void
 388 leo_init_fix(struct fb_info *info)
 389 {
 390         struct leo_par *par = (struct leo_par *)info->par;
 391
 392         strlcpy(info->fix.id, par->sdev->prom_name, sizeof(info->fix.id));
 393
 394         info->fix.type = FB_TYPE_PACKED_PIXELS;
 395         info->fix.visual = FB_VISUAL_TRUECOLOR;
 396
 397         info->fix.line_length = 8192;
 398
 399         info->fix.accel = FB_ACCEL_SUN_LEO;
 400 }
 401
 402 static void leo_wid_put(struct fb_info *info, struct fb_wid_list *wl)
 403 {
 404         struct leo_par *par = (struct leo_par *) info->par;
 405         struct leo_lx_krn __iomem *lx_krn = par->lx_krn;
 406         struct fb_wid_item *wi;
 407         unsigned long flags;
 408         u32 val;
 409         int i, j;
 410
 411         spin_lock_irqsave(&par->lock, flags);
 412
 413         leo_wait(lx_krn);
 414
 415         for (i = 0, wi = wl->wl_list; i < wl->wl_count; i++, wi++) {
 416                 switch(wi->wi_type) {
 417                 case FB_WID_DBL_8:
 418                         j = (wi->wi_index & 0xf) + 0x40;
 419                         break;
 420
 421                 case FB_WID_DBL_24:
 422                         j = wi->wi_index & 0x3f;
 423                         break;
 424
 425                 default:
 426                         continue;
 427                 };
 428                 sbus_writel(0x5800 + j, &lx_krn->krn_type);
 429                 sbus_writel(wi->wi_values[0], &lx_krn->krn_value);
 430         }
 431         sbus_writel(LEO_KRN_TYPE_WID, &lx_krn->krn_type);
 432
 433         val = sbus_readl(&lx_krn->krn_csr);
 434         val |= (LEO_KRN_CSR_UNK | LEO_KRN_CSR_UNK2);
 435         sbus_writel(val, &lx_krn->krn_csr);
 436
 437         spin_unlock_irqrestore(&par->lock, flags);
 438 }
 439
 440 static void leo_init_wids(struct fb_info *info)
 441 {
 442         struct fb_wid_item wi;
 443         struct fb_wid_list wl;
 444
 445         wl.wl_count = 1;
 446         wl.wl_list = &wi;
 447         wi.wi_type = FB_WID_DBL_8;
 448         wi.wi_index = 0;
 449         wi.wi_values [0] = 0x2c0;
 450         leo_wid_put(info, &wl);
 451         wi.wi_index = 1;
 452         wi.wi_values [0] = 0x30;
 453         leo_wid_put(info, &wl);
 454         wi.wi_index = 2;
 455         wi.wi_values [0] = 0x20;
 456         leo_wid_put(info, &wl);
 457         wi.wi_type = FB_WID_DBL_24;
 458         wi.wi_index = 1;
 459         wi.wi_values [0] = 0x30;
 460         leo_wid_put(info, &wl);
 461
 462 }
 463
 464 static void leo_switch_from_graph(struct fb_info *info)
 465 {
 466         struct leo_par *par = (struct leo_par *) info->par;
 467         struct leo_ld __iomem *ss = (struct leo_ld __iomem *) par->ld_ss0;
 468         unsigned long flags;
 469         u32 val;
 470
 471         spin_lock_irqsave(&par->lock, flags);
 472
 473         par->extent = ((info->var.xres - 1) |
 474                        ((info->var.yres - 1) << 16));
 475
 476         sbus_writel(0xffffffff, &ss->wid);
 477         sbus_writel(0xffff, &ss->wmask);
 478         sbus_writel(0, &ss->vclipmin);
 479         sbus_writel(par->extent, &ss->vclipmax);
 480         sbus_writel(0, &ss->fg);
 481         sbus_writel(0xff000000, &ss->planemask);
 482         sbus_writel(0x310850, &ss->rop);
 483         sbus_writel(0, &ss->widclip);
 484         sbus_writel((info->var.xres-1) | ((info->var.yres-1) << 11),
 485                     &par->lc_ss0_usr->extent);
 486         sbus_writel(4, &par->lc_ss0_usr->addrspace);
 487         sbus_writel(0x80000000, &par->lc_ss0_usr->fill);
 488         sbus_writel(0, &par->lc_ss0_usr->fontt);
 489         do {
 490                 val = sbus_readl(&par->lc_ss0_usr->csr);
 491         } while (val & 0x20000000);
 492
 493         spin_unlock_irqrestore(&par->lock, flags);
 494 }
 495
 496 static int leo_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
 497 {
 498         /* We just use this to catch switches out of
 499          * graphics mode.
 500          */
 501         leo_switch_from_graph(info);
 502
 503         if (var->xoffset || var->yoffset || var->vmode)
 504                 return -EINVAL;
 505         return 0;
 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 struct all_info {
 533         struct fb_info info;
 534         struct leo_par par;
 535         struct list_head list;
 536 };
 537 static LIST_HEAD(leo_list);
 538
 539 static void leo_init_one(struct sbus_dev *sdev)
 540 {
 541         struct all_info *all;
 542         int linebytes;
 543
 544         all = kmalloc(sizeof(*all), GFP_KERNEL);
 545         if (!all) {
 546                 printk(KERN_ERR "leo: Cannot allocate memory.\n");
 547                 return;
 548         }
 549         memset(all, 0, sizeof(*all));
 550
 551         INIT_LIST_HEAD(&all->list);
 552
 553         spin_lock_init(&all->par.lock);
 554         all->par.sdev = sdev;
 555
 556         all->par.physbase = sdev->reg_addrs[0].phys_addr;
 557
 558         sbusfb_fill_var(&all->info.var, sdev->prom_node, 32);
 559         leo_fixup_var_rgb(&all->info.var);
 560
 561         linebytes = prom_getintdefault(sdev->prom_node, "linebytes",
 562                                        all->info.var.xres);
 563         all->par.fbsize = PAGE_ALIGN(linebytes * all->info.var.yres);
 564
 565 #ifdef CONFIG_SPARC32
 566         all->info.screen_base = (char __iomem *)
 567                 prom_getintdefault(sdev->prom_node, "address", 0);
 568 #endif
 569         if (!all->info.screen_base)
 570                 all->info.screen_base =
 571                         sbus_ioremap(&sdev->resource[0], LEO_OFF_SS0,
 572                                      0x800000, "leo ram");
 573
 574         all->par.lc_ss0_usr =
 575                 sbus_ioremap(&sdev->resource[0], LEO_OFF_LC_SS0_USR,
 576                              0x1000, "leolc ss0usr");
 577         all->par.ld_ss0 =
 578                 sbus_ioremap(&sdev->resource[0], LEO_OFF_LD_SS0,
 579                              0x1000, "leold ss0");
 580         all->par.ld_ss1 =
 581                 sbus_ioremap(&sdev->resource[0], LEO_OFF_LD_SS1,
 582                              0x1000, "leold ss1");
 583         all->par.lx_krn =
 584                 sbus_ioremap(&sdev->resource[0], LEO_OFF_LX_KRN,
 585                              0x1000, "leolx krn");
 586         all->par.cursor =
 587                 sbus_ioremap(&sdev->resource[0], LEO_OFF_LX_CURSOR,
 588                              sizeof(struct leo_cursor), "leolx cursor");
 589
 590         all->info.flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
 591         all->info.fbops = &leo_ops;
 592         all->info.par = &all->par;
 593
 594         leo_init_wids(&all->info);
 595         leo_init_hw(&all->info);
 596
 597         leo_blank(0, &all->info);
 598
 599         if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
 600                 printk(KERN_ERR "leo: Could not allocate color map.\n");
 601                 kfree(all);
 602                 return;
 603         }
 604
 605         leo_init_fix(&all->info);
 606
 607         if (register_framebuffer(&all->info) < 0) {
 608                 printk(KERN_ERR "leo: Could not register framebuffer.\n");
 609                 fb_dealloc_cmap(&all->info.cmap);
 610                 kfree(all);
 611                 return;
 612         }
 613
 614         list_add(&all->list, &leo_list);
 615
 616         printk("leo: %s at %lx:%lx\n",
 617                sdev->prom_name,
 618                (long) sdev->reg_addrs[0].which_io,
 619                (long) sdev->reg_addrs[0].phys_addr);
 620 }
 621
 622 int __init leo_init(void)
 623 {
 624         struct sbus_bus *sbus;
 625         struct sbus_dev *sdev;
 626
 627         if (fb_get_options("leofb", NULL))
 628                 return -ENODEV;
 629
 630         for_all_sbusdev(sdev, sbus) {
 631                 if (!strcmp(sdev->prom_name, "leo"))
 632                         leo_init_one(sdev);
 633         }
 634
 635         return 0;
 636 }
 637
 638 void __exit leo_exit(void)
 639 {
 640         struct list_head *pos, *tmp;
 641
 642         list_for_each_safe(pos, tmp, &leo_list) {
 643                 struct all_info *all = list_entry(pos, typeof(*all), list);
 644
 645                 unregister_framebuffer(&all->info);
 646                 fb_dealloc_cmap(&all->info.cmap);
 647                 kfree(all);
 648         }
 649 }
 650
 651 int __init
 652 leo_setup(char *arg)
 653 {
 654         /* No cmdline options yet... */
 655         return 0;
 656 }
 657
 658 module_init(leo_init);
 659 #ifdef MODULE
 660 module_exit(leo_exit);
 661 #endif
 662
 663 MODULE_DESCRIPTION("framebuffer driver for LEO chipsets");
 664 MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
 665 MODULE_LICENSE("GPL");