git.oblomov.eu Git - linux-2.6/blob - drivers/video/cg14.c

   1 /* cg14.c: CGFOURTEEN frame buffer driver
   2  *
   3  * Copyright (C) 2003 David S. Miller (davem@redhat.com)
   4  * Copyright (C) 1996,1998 Jakub Jelinek (jj@ultra.linux.cz)
   5  * Copyright (C) 1995 Miguel de Icaza (miguel@nuclecu.unam.mx)
   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 cg14_setcolreg(unsigned, unsigned, unsigned, unsigned,
  32                          unsigned, struct fb_info *);
  33
  34 static int cg14_mmap(struct fb_info *, struct file *, struct vm_area_struct *);
  35 static int cg14_ioctl(struct inode *, struct file *, unsigned int,
  36                       unsigned long, struct fb_info *);
  37 static int cg14_pan_display(struct fb_var_screeninfo *, struct fb_info *);
  38
  39 /*
  40  *  Frame buffer operations
  41  */
  42
  43 static struct fb_ops cg14_ops = {
  44         .owner                  = THIS_MODULE,
  45         .fb_setcolreg           = cg14_setcolreg,
  46         .fb_pan_display         = cg14_pan_display,
  47         .fb_fillrect            = cfb_fillrect,
  48         .fb_copyarea            = cfb_copyarea,
  49         .fb_imageblit           = cfb_imageblit,
  50         .fb_mmap                = cg14_mmap,
  51         .fb_ioctl               = cg14_ioctl,
  52 #ifdef CONFIG_COMPAT
  53         .fb_compat_ioctl        = sbusfb_compat_ioctl,
  54 #endif
  55 };
  56
  57 #define CG14_MCR_INTENABLE_SHIFT        7
  58 #define CG14_MCR_INTENABLE_MASK         0x80
  59 #define CG14_MCR_VIDENABLE_SHIFT        6
  60 #define CG14_MCR_VIDENABLE_MASK         0x40
  61 #define CG14_MCR_PIXMODE_SHIFT          4
  62 #define CG14_MCR_PIXMODE_MASK           0x30
  63 #define CG14_MCR_TMR_SHIFT              2
  64 #define CG14_MCR_TMR_MASK               0x0c
  65 #define CG14_MCR_TMENABLE_SHIFT         1
  66 #define CG14_MCR_TMENABLE_MASK          0x02
  67 #define CG14_MCR_RESET_SHIFT            0
  68 #define CG14_MCR_RESET_MASK             0x01
  69 #define CG14_REV_REVISION_SHIFT         4
  70 #define CG14_REV_REVISION_MASK          0xf0
  71 #define CG14_REV_IMPL_SHIFT             0
  72 #define CG14_REV_IMPL_MASK              0x0f
  73 #define CG14_VBR_FRAMEBASE_SHIFT        12
  74 #define CG14_VBR_FRAMEBASE_MASK         0x00fff000
  75 #define CG14_VMCR1_SETUP_SHIFT          0
  76 #define CG14_VMCR1_SETUP_MASK           0x000001ff
  77 #define CG14_VMCR1_VCONFIG_SHIFT        9
  78 #define CG14_VMCR1_VCONFIG_MASK         0x00000e00
  79 #define CG14_VMCR2_REFRESH_SHIFT        0
  80 #define CG14_VMCR2_REFRESH_MASK         0x00000001
  81 #define CG14_VMCR2_TESTROWCNT_SHIFT     1
  82 #define CG14_VMCR2_TESTROWCNT_MASK      0x00000002
  83 #define CG14_VMCR2_FBCONFIG_SHIFT       2
  84 #define CG14_VMCR2_FBCONFIG_MASK        0x0000000c
  85 #define CG14_VCR_REFRESHREQ_SHIFT       0
  86 #define CG14_VCR_REFRESHREQ_MASK        0x000003ff
  87 #define CG14_VCR1_REFRESHENA_SHIFT      10
  88 #define CG14_VCR1_REFRESHENA_MASK       0x00000400
  89 #define CG14_VCA_CAD_SHIFT              0
  90 #define CG14_VCA_CAD_MASK               0x000003ff
  91 #define CG14_VCA_VERS_SHIFT             10
  92 #define CG14_VCA_VERS_MASK              0x00000c00
  93 #define CG14_VCA_RAMSPEED_SHIFT         12
  94 #define CG14_VCA_RAMSPEED_MASK          0x00001000
  95 #define CG14_VCA_8MB_SHIFT              13
  96 #define CG14_VCA_8MB_MASK               0x00002000
  97
  98 #define CG14_MCR_PIXMODE_8              0
  99 #define CG14_MCR_PIXMODE_16             2
 100 #define CG14_MCR_PIXMODE_32             3
 101
 102 struct cg14_regs{
 103         volatile u8 mcr;        /* Master Control Reg */
 104         volatile u8 ppr;        /* Packed Pixel Reg */
 105         volatile u8 tms[2];     /* Test Mode Status Regs */
 106         volatile u8 msr;        /* Master Status Reg */
 107         volatile u8 fsr;        /* Fault Status Reg */
 108         volatile u8 rev;        /* Revision & Impl */
 109         volatile u8 ccr;        /* Clock Control Reg */
 110         volatile u32 tmr;       /* Test Mode Read Back */
 111         volatile u8 mod;        /* Monitor Operation Data Reg */
 112         volatile u8 acr;        /* Aux Control */
 113         u8 xxx0[6];
 114         volatile u16 hct;       /* Hor Counter */
 115         volatile u16 vct;       /* Vert Counter */
 116         volatile u16 hbs;       /* Hor Blank Start */
 117         volatile u16 hbc;       /* Hor Blank Clear */
 118         volatile u16 hss;       /* Hor Sync Start */
 119         volatile u16 hsc;       /* Hor Sync Clear */
 120         volatile u16 csc;       /* Composite Sync Clear */
 121         volatile u16 vbs;       /* Vert Blank Start */
 122         volatile u16 vbc;       /* Vert Blank Clear */
 123         volatile u16 vss;       /* Vert Sync Start */
 124         volatile u16 vsc;       /* Vert Sync Clear */
 125         volatile u16 xcs;
 126         volatile u16 xcc;
 127         volatile u16 fsa;       /* Fault Status Address */
 128         volatile u16 adr;       /* Address Registers */
 129         u8 xxx1[0xce];
 130         volatile u8 pcg[0x100]; /* Pixel Clock Generator */
 131         volatile u32 vbr;       /* Frame Base Row */
 132         volatile u32 vmcr;      /* VBC Master Control */
 133         volatile u32 vcr;       /* VBC refresh */
 134         volatile u32 vca;       /* VBC Config */
 135 };
 136
 137 #define CG14_CCR_ENABLE 0x04
 138 #define CG14_CCR_SELECT 0x02    /* HW/Full screen */
 139
 140 struct cg14_cursor {
 141         volatile u32 cpl0[32];  /* Enable plane 0 */
 142         volatile u32 cpl1[32];  /* Color selection plane */
 143         volatile u8 ccr;        /* Cursor Control Reg */
 144         u8 xxx0[3];
 145         volatile u16 cursx;     /* Cursor x,y position */
 146         volatile u16 cursy;     /* Cursor x,y position */
 147         volatile u32 color0;
 148         volatile u32 color1;
 149         u32 xxx1[0x1bc];
 150         volatile u32 cpl0i[32]; /* Enable plane 0 autoinc */
 151         volatile u32 cpl1i[32]; /* Color selection autoinc */
 152 };
 153
 154 struct cg14_dac {
 155         volatile u8 addr;       /* Address Register */
 156         u8 xxx0[255];
 157         volatile u8 glut;       /* Gamma table */
 158         u8 xxx1[255];
 159         volatile u8 select;     /* Register Select */
 160         u8 xxx2[255];
 161         volatile u8 mode;       /* Mode Register */
 162 };
 163
 164 struct cg14_xlut{
 165         volatile u8 x_xlut [256];
 166         volatile u8 x_xlutd [256];
 167         u8 xxx0[0x600];
 168         volatile u8 x_xlut_inc [256];
 169         volatile u8 x_xlutd_inc [256];
 170 };
 171
 172 /* Color look up table (clut) */
 173 /* Each one of these arrays hold the color lookup table (for 256
 174  * colors) for each MDI page (I assume then there should be 4 MDI
 175  * pages, I still wonder what they are.  I have seen NeXTStep split
 176  * the screen in four parts, while operating in 24 bits mode.  Each
 177  * integer holds 4 values: alpha value (transparency channel, thanks
 178  * go to John Stone (johns@umr.edu) from OpenBSD), red, green and blue
 179  *
 180  * I currently use the clut instead of the Xlut
 181  */
 182 struct cg14_clut {
 183         u32 c_clut [256];
 184         u32 c_clutd [256];    /* i wonder what the 'd' is for */
 185         u32 c_clut_inc [256];
 186         u32 c_clutd_inc [256];
 187 };
 188
 189 #define CG14_MMAP_ENTRIES       16
 190
 191 struct cg14_par {
 192         spinlock_t              lock;
 193         struct cg14_regs        __iomem *regs;
 194         struct cg14_clut        __iomem *clut;
 195         struct cg14_cursor      __iomem *cursor;
 196
 197         u32                     flags;
 198 #define CG14_FLAG_BLANKED       0x00000001
 199
 200         unsigned long           physbase;
 201         unsigned long           iospace;
 202         unsigned long           fbsize;
 203
 204         struct sbus_mmap_map    mmap_map[CG14_MMAP_ENTRIES];
 205
 206         int                     mode;
 207         int                     ramsize;
 208         struct sbus_dev         *sdev;
 209 };
 210
 211 static void __cg14_reset(struct cg14_par *par)
 212 {
 213         struct cg14_regs __iomem *regs = par->regs;
 214         u8 val;
 215
 216         val = sbus_readb(&regs->mcr);
 217         val &= ~(CG14_MCR_PIXMODE_MASK);
 218         sbus_writeb(val, &regs->mcr);
 219 }
 220
 221 static int cg14_pan_display(struct fb_var_screeninfo *var, struct fb_info *info)
 222 {
 223         struct cg14_par *par = (struct cg14_par *) info->par;
 224         unsigned long flags;
 225
 226         /* We just use this to catch switches out of
 227          * graphics mode.
 228          */
 229         spin_lock_irqsave(&par->lock, flags);
 230         __cg14_reset(par);
 231         spin_unlock_irqrestore(&par->lock, flags);
 232
 233         if (var->xoffset || var->yoffset || var->vmode)
 234                 return -EINVAL;
 235         return 0;
 236 }
 237
 238 /**
 239  *      cg14_setcolreg - Optional function. Sets a color register.
 240  *      @regno: boolean, 0 copy local, 1 get_user() function
 241  *      @red: frame buffer colormap structure
 242  *      @green: The green value which can be up to 16 bits wide
 243  *      @blue:  The blue value which can be up to 16 bits wide.
 244  *      @transp: If supported the alpha value which can be up to 16 bits wide.
 245  *      @info: frame buffer info structure
 246  */
 247 static int cg14_setcolreg(unsigned regno,
 248                           unsigned red, unsigned green, unsigned blue,
 249                           unsigned transp, struct fb_info *info)
 250 {
 251         struct cg14_par *par = (struct cg14_par *) info->par;
 252         struct cg14_clut __iomem *clut = par->clut;
 253         unsigned long flags;
 254         u32 val;
 255
 256         if (regno >= 256)
 257                 return 1;
 258
 259         red >>= 8;
 260         green >>= 8;
 261         blue >>= 8;
 262         val = (red | (green << 8) | (blue << 16));
 263
 264         spin_lock_irqsave(&par->lock, flags);
 265         sbus_writel(val, &clut->c_clut[regno]);
 266         spin_unlock_irqrestore(&par->lock, flags);
 267
 268         return 0;
 269 }
 270
 271 static int cg14_mmap(struct fb_info *info, struct file *file, struct vm_area_struct *vma)
 272 {
 273         struct cg14_par *par = (struct cg14_par *) info->par;
 274
 275         return sbusfb_mmap_helper(par->mmap_map,
 276                                   par->physbase, par->fbsize,
 277                                   par->iospace, vma);
 278 }
 279
 280 static int cg14_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
 281                       unsigned long arg, struct fb_info *info)
 282 {
 283         struct cg14_par *par = (struct cg14_par *) info->par;
 284         struct cg14_regs __iomem *regs = par->regs;
 285         struct mdi_cfginfo kmdi, __user *mdii;
 286         unsigned long flags;
 287         int cur_mode, mode, ret = 0;
 288
 289         switch (cmd) {
 290         case MDI_RESET:
 291                 spin_lock_irqsave(&par->lock, flags);
 292                 __cg14_reset(par);
 293                 spin_unlock_irqrestore(&par->lock, flags);
 294                 break;
 295
 296         case MDI_GET_CFGINFO:
 297                 memset(&kmdi, 0, sizeof(kmdi));
 298
 299                 spin_lock_irqsave(&par->lock, flags);
 300                 kmdi.mdi_type = FBTYPE_MDICOLOR;
 301                 kmdi.mdi_height = info->var.yres;
 302                 kmdi.mdi_width = info->var.xres;
 303                 kmdi.mdi_mode = par->mode;
 304                 kmdi.mdi_pixfreq = 72; /* FIXME */
 305                 kmdi.mdi_size = par->ramsize;
 306                 spin_unlock_irqrestore(&par->lock, flags);
 307
 308                 mdii = (struct mdi_cfginfo __user *) arg;
 309                 if (copy_to_user(mdii, &kmdi, sizeof(kmdi)))
 310                         ret = -EFAULT;
 311                 break;
 312
 313         case MDI_SET_PIXELMODE:
 314                 if (get_user(mode, (int __user *) arg)) {
 315                         ret = -EFAULT;
 316                         break;
 317                 }
 318
 319                 spin_lock_irqsave(&par->lock, flags);
 320                 cur_mode = sbus_readb(&regs->mcr);
 321                 cur_mode &= ~CG14_MCR_PIXMODE_MASK;
 322                 switch(mode) {
 323                 case MDI_32_PIX:
 324                         cur_mode |= (CG14_MCR_PIXMODE_32 <<
 325                                      CG14_MCR_PIXMODE_SHIFT);
 326                         break;
 327
 328                 case MDI_16_PIX:
 329                         cur_mode |= (CG14_MCR_PIXMODE_16 <<
 330                                      CG14_MCR_PIXMODE_SHIFT);
 331                         break;
 332
 333                 case MDI_8_PIX:
 334                         break;
 335
 336                 default:
 337                         ret = -ENOSYS;
 338                         break;
 339                 };
 340                 if (!ret) {
 341                         sbus_writeb(cur_mode, &regs->mcr);
 342                         par->mode = mode;
 343                 }
 344                 spin_unlock_irqrestore(&par->lock, flags);
 345                 break;
 346
 347         default:
 348                 ret = sbusfb_ioctl_helper(cmd, arg, info,
 349                                           FBTYPE_MDICOLOR, 8, par->fbsize);
 350                 break;
 351         };
 352
 353         return ret;
 354 }
 355
 356 /*
 357  *  Initialisation
 358  */
 359
 360 static void cg14_init_fix(struct fb_info *info, int linebytes)
 361 {
 362         struct cg14_par *par = (struct cg14_par *)info->par;
 363         const char *name;
 364
 365         name = "cgfourteen";
 366         if (par->sdev)
 367                 name = par->sdev->prom_name;
 368
 369         strlcpy(info->fix.id, name, sizeof(info->fix.id));
 370
 371         info->fix.type = FB_TYPE_PACKED_PIXELS;
 372         info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
 373
 374         info->fix.line_length = linebytes;
 375
 376         info->fix.accel = FB_ACCEL_SUN_CG14;
 377 }
 378
 379 static struct sbus_mmap_map __cg14_mmap_map[CG14_MMAP_ENTRIES] __initdata = {
 380         {
 381                 .voff   = CG14_REGS,
 382                 .poff   = 0x80000000,
 383                 .size   = 0x1000
 384         },
 385         {
 386                 .voff   = CG14_XLUT,
 387                 .poff   = 0x80003000,
 388                 .size   = 0x1000
 389         },
 390         {
 391                 .voff   = CG14_CLUT1,
 392                 .poff   = 0x80004000,
 393                 .size   = 0x1000
 394         },
 395         {
 396                 .voff   = CG14_CLUT2,
 397                 .poff   = 0x80005000,
 398                 .size   = 0x1000
 399         },
 400         {
 401                 .voff   = CG14_CLUT3,
 402                 .poff   = 0x80006000,
 403                 .size   = 0x1000
 404         },
 405         {
 406                 .voff   = CG3_MMAP_OFFSET - 0x7000,
 407                 .poff   = 0x80000000,
 408                 .size   = 0x7000
 409         },
 410         {
 411                 .voff   = CG3_MMAP_OFFSET,
 412                 .poff   = 0x00000000,
 413                 .size   = SBUS_MMAP_FBSIZE(1)
 414         },
 415         {
 416                 .voff   = MDI_CURSOR_MAP,
 417                 .poff   = 0x80001000,
 418                 .size   = 0x1000
 419         },
 420         {
 421                 .voff   = MDI_CHUNKY_BGR_MAP,
 422                 .poff   = 0x01000000,
 423                 .size   = 0x400000
 424         },
 425         {
 426                 .voff   = MDI_PLANAR_X16_MAP,
 427                 .poff   = 0x02000000,
 428                 .size   = 0x200000
 429         },
 430         {
 431                 .voff   = MDI_PLANAR_C16_MAP,
 432                 .poff   = 0x02800000,
 433                 .size   = 0x200000
 434         },
 435         {
 436                 .voff   = MDI_PLANAR_X32_MAP,
 437                 .poff   = 0x03000000,
 438                 .size   = 0x100000
 439         },
 440         {
 441                 .voff   = MDI_PLANAR_B32_MAP,
 442                 .poff   = 0x03400000,
 443                 .size   = 0x100000
 444         },
 445         {
 446                 .voff   = MDI_PLANAR_G32_MAP,
 447                 .poff   = 0x03800000,
 448                 .size   = 0x100000
 449         },
 450         {
 451                 .voff   = MDI_PLANAR_R32_MAP,
 452                 .poff   = 0x03c00000,
 453                 .size   = 0x100000
 454         },
 455         { .size = 0 }
 456 };
 457
 458 struct all_info {
 459         struct fb_info info;
 460         struct cg14_par par;
 461         struct list_head list;
 462 };
 463 static LIST_HEAD(cg14_list);
 464
 465 static void cg14_init_one(struct sbus_dev *sdev, int node, int parent_node)
 466 {
 467         struct all_info *all;
 468         unsigned long phys, rphys;
 469         u32 bases[6];
 470         int is_8mb, linebytes, i;
 471
 472         if (!sdev) {
 473                 if (prom_getproperty(node, "address",
 474                                      (char *) &bases[0], sizeof(bases)) <= 0
 475                     || !bases[0]) {
 476                         printk(KERN_ERR "cg14: Device is not mapped.\n");
 477                         return;
 478                 }
 479                 if (__get_iospace(bases[0]) != __get_iospace(bases[1])) {
 480                         printk(KERN_ERR "cg14: I/O spaces don't match.\n");
 481                         return;
 482                 }
 483         }
 484
 485         all = kmalloc(sizeof(*all), GFP_KERNEL);
 486         if (!all) {
 487                 printk(KERN_ERR "cg14: Cannot allocate memory.\n");
 488                 return;
 489         }
 490         memset(all, 0, sizeof(*all));
 491
 492         INIT_LIST_HEAD(&all->list);
 493
 494         spin_lock_init(&all->par.lock);
 495
 496         sbusfb_fill_var(&all->info.var, node, 8);
 497         all->info.var.red.length = 8;
 498         all->info.var.green.length = 8;
 499         all->info.var.blue.length = 8;
 500
 501         linebytes = prom_getintdefault(node, "linebytes",
 502                                        all->info.var.xres);
 503         all->par.fbsize = PAGE_ALIGN(linebytes * all->info.var.yres);
 504
 505         all->par.sdev = sdev;
 506         if (sdev) {
 507                 rphys = sdev->reg_addrs[0].phys_addr;
 508                 all->par.physbase = phys = sdev->reg_addrs[1].phys_addr;
 509                 all->par.iospace = sdev->reg_addrs[0].which_io;
 510
 511                 all->par.regs = sbus_ioremap(&sdev->resource[0], 0,
 512                                      sizeof(struct cg14_regs),
 513                                      "cg14 regs");
 514                 all->par.clut = sbus_ioremap(&sdev->resource[0], CG14_CLUT1,
 515                                      sizeof(struct cg14_clut),
 516                                      "cg14 clut");
 517                 all->par.cursor = sbus_ioremap(&sdev->resource[0], CG14_CURSORREGS,
 518                                      sizeof(struct cg14_cursor),
 519                                      "cg14 cursor");
 520                 all->info.screen_base = sbus_ioremap(&sdev->resource[1], 0,
 521                                      all->par.fbsize, "cg14 ram");
 522         } else {
 523                 rphys = __get_phys(bases[0]);
 524                 all->par.physbase = phys = __get_phys(bases[1]);
 525                 all->par.iospace = __get_iospace(bases[0]);
 526                 all->par.regs = (struct cg14_regs __iomem *)(unsigned long)bases[0];
 527                 all->par.clut = (struct cg14_clut __iomem *)((unsigned long)bases[0] +
 528                                                      CG14_CLUT1);
 529                 all->par.cursor =
 530                         (struct cg14_cursor __iomem *)((unsigned long)bases[0] +
 531                                                CG14_CURSORREGS);
 532
 533                 all->info.screen_base = (char __iomem *)(unsigned long)bases[1];
 534         }
 535
 536         prom_getproperty(node, "reg", (char *) &bases[0], sizeof(bases));
 537         is_8mb = (bases[5] == 0x800000);
 538
 539         if (sizeof(all->par.mmap_map) != sizeof(__cg14_mmap_map)) {
 540                 extern void __cg14_mmap_sized_wrongly(void);
 541
 542                 __cg14_mmap_sized_wrongly();
 543         }
 544
 545         memcpy(&all->par.mmap_map, &__cg14_mmap_map, sizeof(all->par.mmap_map));
 546         for (i = 0; i < CG14_MMAP_ENTRIES; i++) {
 547                 struct sbus_mmap_map *map = &all->par.mmap_map[i];
 548
 549                 if (!map->size)
 550                         break;
 551                 if (map->poff & 0x80000000)
 552                         map->poff = (map->poff & 0x7fffffff) + rphys - phys;
 553                 if (is_8mb &&
 554                     map->size >= 0x100000 &&
 555                     map->size <= 0x400000)
 556                         map->size *= 2;
 557         }
 558
 559         all->par.mode = MDI_8_PIX;
 560         all->par.ramsize = (is_8mb ? 0x800000 : 0x400000);
 561
 562         all->info.flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
 563         all->info.fbops = &cg14_ops;
 564         all->info.par = &all->par;
 565
 566         __cg14_reset(&all->par);
 567
 568         if (fb_alloc_cmap(&all->info.cmap, 256, 0)) {
 569                 printk(KERN_ERR "cg14: Could not allocate color map.\n");
 570                 kfree(all);
 571                 return;
 572         }
 573         fb_set_cmap(&all->info.cmap, &all->info);
 574
 575         cg14_init_fix(&all->info, linebytes);
 576
 577         if (register_framebuffer(&all->info) < 0) {
 578                 printk(KERN_ERR "cg14: Could not register framebuffer.\n");
 579                 fb_dealloc_cmap(&all->info.cmap);
 580                 kfree(all);
 581                 return;
 582         }
 583
 584         list_add(&all->list, &cg14_list);
 585
 586         printk("cg14: cgfourteen at %lx:%lx, %dMB\n",
 587                all->par.iospace, all->par.physbase, all->par.ramsize >> 20);
 588
 589 }
 590
 591 int __init cg14_init(void)
 592 {
 593         struct sbus_bus *sbus;
 594         struct sbus_dev *sdev;
 595
 596         if (fb_get_options("cg14fb", NULL))
 597                 return -ENODEV;
 598
 599 #ifdef CONFIG_SPARC32
 600         {
 601                 int root, node;
 602
 603                 root = prom_getchild(prom_root_node);
 604                 root = prom_searchsiblings(root, "obio");
 605                 if (root) {
 606                         node = prom_searchsiblings(prom_getchild(root),
 607                                                    "cgfourteen");
 608                         if (node)
 609                                 cg14_init_one(NULL, node, root);
 610                 }
 611         }
 612 #endif
 613         for_all_sbusdev(sdev, sbus) {
 614                 if (!strcmp(sdev->prom_name, "cgfourteen"))
 615                         cg14_init_one(sdev, sdev->prom_node, sbus->prom_node);
 616         }
 617
 618         return 0;
 619 }
 620
 621 void __exit cg14_exit(void)
 622 {
 623         struct list_head *pos, *tmp;
 624
 625         list_for_each_safe(pos, tmp, &cg14_list) {
 626                 struct all_info *all = list_entry(pos, typeof(*all), list);
 627
 628                 unregister_framebuffer(&all->info);
 629                 fb_dealloc_cmap(&all->info.cmap);
 630                 kfree(all);
 631         }
 632 }
 633
 634 int __init
 635 cg14_setup(char *arg)
 636 {
 637         /* No cmdline options yet... */
 638         return 0;
 639 }
 640
 641 module_init(cg14_init);
 642
 643 #ifdef MODULE
 644 module_exit(cg14_exit);
 645 #endif
 646
 647 MODULE_DESCRIPTION("framebuffer driver for CGfourteen chipsets");
 648 MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
 649 MODULE_LICENSE("GPL");