drivers/video/fbdev/leo.c

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