release/src-rt-6.x.4708/linux/linux-2.6.36/drivers/video/hgafb.c

   1 /*
   2  * linux/drivers/video/hgafb.c -- Hercules graphics adaptor frame buffer device
   3  *
   4  *      Created 25 Nov 1999 by Ferenc Bakonyi (fero@drama.obuda.kando.hu)
   5  *      Based on skeletonfb.c by Geert Uytterhoeven and
   6  *               mdacon.c by Andrew Apted
   7  *
   8  * History:
   9  *
  10  * - Revision 0.1.8 (23 Oct 2002): Ported to new framebuffer api.
  11  *
  12  * - Revision 0.1.7 (23 Jan 2001): fix crash resulting from MDA only cards
  13  *                                 being detected as Hercules.   (Paul G.)
  14  * - Revision 0.1.6 (17 Aug 2000): new style structs
  15  *                                 documentation
  16  * - Revision 0.1.5 (13 Mar 2000): spinlocks instead of saveflags();cli();etc
  17  *                                 minor fixes
  18  * - Revision 0.1.4 (24 Jan 2000): fixed a bug in hga_card_detect() for
  19  *                                  HGA-only systems
  20  * - Revision 0.1.3 (22 Jan 2000): modified for the new fb_info structure
  21  *                                 screen is cleared after rmmod
  22  *                                 virtual resolutions
  23  *                                 module parameter 'nologo={0|1}'
  24  *                                 the most important: boot logo :)
  25  * - Revision 0.1.0  (6 Dec 1999): faster scrolling and minor fixes
  26  * - First release  (25 Nov 1999)
  27  *
  28  * This file is subject to the terms and conditions of the GNU General Public
  29  * License.  See the file COPYING in the main directory of this archive
  30  * for more details.
  31  */
  32
  33 #include <linux/module.h>
  34 #include <linux/kernel.h>
  35 #include <linux/errno.h>
  36 #include <linux/spinlock.h>
  37 #include <linux/string.h>
  38 #include <linux/mm.h>
  39 #include <linux/delay.h>
  40 #include <linux/fb.h>
  41 #include <linux/init.h>
  42 #include <linux/ioport.h>
  43 #include <linux/platform_device.h>
  44 #include <asm/io.h>
  45 #include <asm/vga.h>
  46
  47 #define DPRINTK(args...)
  48
  49 #define CHKINFO(ret)
  50
  51 /* Description of the hardware layout */
  52
  53 static void __iomem *hga_vram;                  /* Base of video memory */
  54 static unsigned long hga_vram_len;              /* Size of video memory */
  55
  56 #define HGA_ROWADDR(row) ((row%4)*8192 + (row>>2)*90)
  57 #define HGA_TXT                 0
  58 #define HGA_GFX                 1
  59
  60 static inline u8 __iomem * rowaddr(struct fb_info *info, u_int row)
  61 {
  62         return info->screen_base + HGA_ROWADDR(row);
  63 }
  64
  65 static int hga_mode = -1;                       /* 0 = txt, 1 = gfx mode */
  66
  67 static enum { TYPE_HERC, TYPE_HERCPLUS, TYPE_HERCCOLOR } hga_type;
  68 static char *hga_type_name;
  69
  70 #define HGA_INDEX_PORT          0x3b4           /* Register select port */
  71 #define HGA_VALUE_PORT          0x3b5           /* Register value port */
  72 #define HGA_MODE_PORT           0x3b8           /* Mode control port */
  73 #define HGA_STATUS_PORT         0x3ba           /* Status and Config port */
  74 #define HGA_GFX_PORT            0x3bf           /* Graphics control port */
  75
  76 /* HGA register values */
  77
  78 #define HGA_CURSOR_BLINKING     0x00
  79 #define HGA_CURSOR_OFF          0x20
  80 #define HGA_CURSOR_SLOWBLINK    0x60
  81
  82 #define HGA_MODE_GRAPHICS       0x02
  83 #define HGA_MODE_VIDEO_EN       0x08
  84 #define HGA_MODE_BLINK_EN       0x20
  85 #define HGA_MODE_GFX_PAGE1      0x80
  86
  87 #define HGA_STATUS_HSYNC        0x01
  88 #define HGA_STATUS_VSYNC        0x80
  89 #define HGA_STATUS_VIDEO        0x08
  90
  91 #define HGA_CONFIG_COL132       0x08
  92 #define HGA_GFX_MODE_EN         0x01
  93 #define HGA_GFX_PAGE_EN         0x02
  94
  95 /* Global locks */
  96
  97 static DEFINE_SPINLOCK(hga_reg_lock);
  98
  99 /* Framebuffer driver structures */
 100
 101 static struct fb_var_screeninfo hga_default_var __devinitdata = {
 102         .xres           = 720,
 103         .yres           = 348,
 104         .xres_virtual   = 720,
 105         .yres_virtual   = 348,
 106         .bits_per_pixel = 1,
 107         .red            = {0, 1, 0},
 108         .green          = {0, 1, 0},
 109         .blue           = {0, 1, 0},
 110         .transp         = {0, 0, 0},
 111         .height         = -1,
 112         .width          = -1,
 113 };
 114
 115 static struct fb_fix_screeninfo hga_fix __devinitdata = {
 116         .id             = "HGA",
 117         .type           = FB_TYPE_PACKED_PIXELS,        /* (not sure) */
 118         .visual         = FB_VISUAL_MONO10,
 119         .xpanstep       = 8,
 120         .ypanstep       = 8,
 121         .line_length    = 90,
 122         .accel          = FB_ACCEL_NONE
 123 };
 124
 125 /* Don't assume that tty1 will be the initial current console. */
 126 static int release_io_port = 0;
 127 static int release_io_ports = 0;
 128 static int nologo = 0;
 129
 130 /* -------------------------------------------------------------------------
 131  *
 132  * Low level hardware functions
 133  *
 134  * ------------------------------------------------------------------------- */
 135
 136 static void write_hga_b(unsigned int val, unsigned char reg)
 137 {
 138         outb_p(reg, HGA_INDEX_PORT);
 139         outb_p(val, HGA_VALUE_PORT);
 140 }
 141
 142 static void write_hga_w(unsigned int val, unsigned char reg)
 143 {
 144         outb_p(reg,   HGA_INDEX_PORT); outb_p(val >> 8,   HGA_VALUE_PORT);
 145         outb_p(reg+1, HGA_INDEX_PORT); outb_p(val & 0xff, HGA_VALUE_PORT);
 146 }
 147
 148 static int test_hga_b(unsigned char val, unsigned char reg)
 149 {
 150         outb_p(reg, HGA_INDEX_PORT);
 151         outb  (val, HGA_VALUE_PORT);
 152         udelay(20); val = (inb_p(HGA_VALUE_PORT) == val);
 153         return val;
 154 }
 155
 156 static void hga_clear_screen(void)
 157 {
 158         unsigned char fillchar = 0xbf; /* magic */
 159         unsigned long flags;
 160
 161         spin_lock_irqsave(&hga_reg_lock, flags);
 162         if (hga_mode == HGA_TXT)
 163                 fillchar = ' ';
 164         else if (hga_mode == HGA_GFX)
 165                 fillchar = 0x00;
 166         spin_unlock_irqrestore(&hga_reg_lock, flags);
 167         if (fillchar != 0xbf)
 168                 memset_io(hga_vram, fillchar, hga_vram_len);
 169 }
 170
 171 static void hga_txt_mode(void)
 172 {
 173         unsigned long flags;
 174
 175         spin_lock_irqsave(&hga_reg_lock, flags);
 176         outb_p(HGA_MODE_VIDEO_EN | HGA_MODE_BLINK_EN, HGA_MODE_PORT);
 177         outb_p(0x00, HGA_GFX_PORT);
 178         outb_p(0x00, HGA_STATUS_PORT);
 179
 180         write_hga_b(0x61, 0x00);        /* horizontal total */
 181         write_hga_b(0x50, 0x01);        /* horizontal displayed */
 182         write_hga_b(0x52, 0x02);        /* horizontal sync pos */
 183         write_hga_b(0x0f, 0x03);        /* horizontal sync width */
 184
 185         write_hga_b(0x19, 0x04);        /* vertical total */
 186         write_hga_b(0x06, 0x05);        /* vertical total adjust */
 187         write_hga_b(0x19, 0x06);        /* vertical displayed */
 188         write_hga_b(0x19, 0x07);        /* vertical sync pos */
 189
 190         write_hga_b(0x02, 0x08);        /* interlace mode */
 191         write_hga_b(0x0d, 0x09);        /* maximum scanline */
 192         write_hga_b(0x0c, 0x0a);        /* cursor start */
 193         write_hga_b(0x0d, 0x0b);        /* cursor end */
 194
 195         write_hga_w(0x0000, 0x0c);      /* start address */
 196         write_hga_w(0x0000, 0x0e);      /* cursor location */
 197
 198         hga_mode = HGA_TXT;
 199         spin_unlock_irqrestore(&hga_reg_lock, flags);
 200 }
 201
 202 static void hga_gfx_mode(void)
 203 {
 204         unsigned long flags;
 205
 206         spin_lock_irqsave(&hga_reg_lock, flags);
 207         outb_p(0x00, HGA_STATUS_PORT);
 208         outb_p(HGA_GFX_MODE_EN, HGA_GFX_PORT);
 209         outb_p(HGA_MODE_VIDEO_EN | HGA_MODE_GRAPHICS, HGA_MODE_PORT);
 210
 211         write_hga_b(0x35, 0x00);        /* horizontal total */
 212         write_hga_b(0x2d, 0x01);        /* horizontal displayed */
 213         write_hga_b(0x2e, 0x02);        /* horizontal sync pos */
 214         write_hga_b(0x07, 0x03);        /* horizontal sync width */
 215
 216         write_hga_b(0x5b, 0x04);        /* vertical total */
 217         write_hga_b(0x02, 0x05);        /* vertical total adjust */
 218         write_hga_b(0x57, 0x06);        /* vertical displayed */
 219         write_hga_b(0x57, 0x07);        /* vertical sync pos */
 220
 221         write_hga_b(0x02, 0x08);        /* interlace mode */
 222         write_hga_b(0x03, 0x09);        /* maximum scanline */
 223         write_hga_b(0x00, 0x0a);        /* cursor start */
 224         write_hga_b(0x00, 0x0b);        /* cursor end */
 225
 226         write_hga_w(0x0000, 0x0c);      /* start address */
 227         write_hga_w(0x0000, 0x0e);      /* cursor location */
 228
 229         hga_mode = HGA_GFX;
 230         spin_unlock_irqrestore(&hga_reg_lock, flags);
 231 }
 232
 233 static void hga_show_logo(struct fb_info *info)
 234 {
 235 /*
 236         void __iomem *dest = hga_vram;
 237         char *logo = linux_logo_bw;
 238         int x, y;
 239
 240         for (y = 134; y < 134 + 80 ; y++) * this needs some cleanup *
 241                 for (x = 0; x < 10 ; x++)
 242                         writeb(~*(logo++),(dest + HGA_ROWADDR(y) + x + 40));
 243 */
 244 }
 245
 246 static void hga_pan(unsigned int xoffset, unsigned int yoffset)
 247 {
 248         unsigned int base;
 249         unsigned long flags;
 250
 251         base = (yoffset / 8) * 90 + xoffset;
 252         spin_lock_irqsave(&hga_reg_lock, flags);
 253         write_hga_w(base, 0x0c);        /* start address */
 254         spin_unlock_irqrestore(&hga_reg_lock, flags);
 255         DPRINTK("hga_pan: base:%d\n", base);
 256 }
 257
 258 static void hga_blank(int blank_mode)
 259 {
 260         unsigned long flags;
 261
 262         spin_lock_irqsave(&hga_reg_lock, flags);
 263         if (blank_mode) {
 264                 outb_p(0x00, HGA_MODE_PORT);    /* disable video */
 265         } else {
 266                 outb_p(HGA_MODE_VIDEO_EN | HGA_MODE_GRAPHICS, HGA_MODE_PORT);
 267         }
 268         spin_unlock_irqrestore(&hga_reg_lock, flags);
 269 }
 270
 271 static int __devinit hga_card_detect(void)
 272 {
 273         int count = 0;
 274         void __iomem *p, *q;
 275         unsigned short p_save, q_save;
 276
 277         hga_vram_len  = 0x08000;
 278
 279         hga_vram = ioremap(0xb0000, hga_vram_len);
 280
 281         if (request_region(0x3b0, 12, "hgafb"))
 282                 release_io_ports = 1;
 283         if (request_region(0x3bf, 1, "hgafb"))
 284                 release_io_port = 1;
 285
 286         /* do a memory check */
 287
 288         p = hga_vram;
 289         q = hga_vram + 0x01000;
 290
 291         p_save = readw(p); q_save = readw(q);
 292
 293         writew(0xaa55, p); if (readw(p) == 0xaa55) count++;
 294         writew(0x55aa, p); if (readw(p) == 0x55aa) count++;
 295         writew(p_save, p);
 296
 297         if (count != 2)
 298                 goto error;
 299
 300         /* Ok, there is definitely a card registering at the correct
 301          * memory location, so now we do an I/O port test.
 302          */
 303
 304         if (!test_hga_b(0x66, 0x0f))        /* cursor low register */
 305                 goto error;
 306
 307         if (!test_hga_b(0x99, 0x0f))     /* cursor low register */
 308                 goto error;
 309
 310         /* See if the card is a Hercules, by checking whether the vsync
 311          * bit of the status register is changing.  This test lasts for
 312          * approximately 1/10th of a second.
 313          */
 314
 315         p_save = q_save = inb_p(HGA_STATUS_PORT) & HGA_STATUS_VSYNC;
 316
 317         for (count=0; count < 50000 && p_save == q_save; count++) {
 318                 q_save = inb(HGA_STATUS_PORT) & HGA_STATUS_VSYNC;
 319                 udelay(2);
 320         }
 321
 322         if (p_save == q_save)
 323                 goto error;
 324
 325         switch (inb_p(HGA_STATUS_PORT) & 0x70) {
 326                 case 0x10:
 327                         hga_type = TYPE_HERCPLUS;
 328                         hga_type_name = "HerculesPlus";
 329                         break;
 330                 case 0x50:
 331                         hga_type = TYPE_HERCCOLOR;
 332                         hga_type_name = "HerculesColor";
 333                         break;
 334                 default:
 335                         hga_type = TYPE_HERC;
 336                         hga_type_name = "Hercules";
 337                         break;
 338         }
 339         return 1;
 340 error:
 341         if (release_io_ports)
 342                 release_region(0x3b0, 12);
 343         if (release_io_port)
 344                 release_region(0x3bf, 1);
 345         return 0;
 346 }
 347
 348 /**
 349  *      hgafb_open - open the framebuffer device
 350  *      @info:pointer to fb_info object containing info for current hga board
 351  *      @int:open by console system or userland.
 352  */
 353
 354 static int hgafb_open(struct fb_info *info, int init)
 355 {
 356         hga_gfx_mode();
 357         hga_clear_screen();
 358         if (!nologo) hga_show_logo(info);
 359         return 0;
 360 }
 361
 362 /**
 363  *      hgafb_open - open the framebuffer device
 364  *      @info:pointer to fb_info object containing info for current hga board
 365  *      @int:open by console system or userland.
 366  */
 367
 368 static int hgafb_release(struct fb_info *info, int init)
 369 {
 370         hga_txt_mode();
 371         hga_clear_screen();
 372         return 0;
 373 }
 374
 375 /**
 376  *      hgafb_setcolreg - set color registers
 377  *      @regno:register index to set
 378  *      @red:red value, unused
 379  *      @green:green value, unused
 380  *      @blue:blue value, unused
 381  *      @transp:transparency value, unused
 382  *      @info:unused
 383  *
 384  *      This callback function is used to set the color registers of a HGA
 385  *      board. Since we have only two fixed colors only @regno is checked.
 386  *      A zero is returned on success and 1 for failure.
 387  */
 388
 389 static int hgafb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
 390                            u_int transp, struct fb_info *info)
 391 {
 392         if (regno > 1)
 393                 return 1;
 394         return 0;
 395 }
 396
 397 /**
 398  *      hga_pan_display - pan or wrap the display
 399  *      @var:contains new xoffset, yoffset and vmode values
 400  *      @info:pointer to fb_info object containing info for current hga board
 401  *
 402  *      This function looks only at xoffset, yoffset and the %FB_VMODE_YWRAP
 403  *      flag in @var. If input parameters are correct it calls hga_pan() to
 404  *      program the hardware. @info->var is updated to the new values.
 405  *      A zero is returned on success and %-EINVAL for failure.
 406  */
 407
 408 static int hgafb_pan_display(struct fb_var_screeninfo *var,
 409                              struct fb_info *info)
 410 {
 411         if (var->vmode & FB_VMODE_YWRAP) {
 412                 if (var->yoffset < 0 ||
 413                     var->yoffset >= info->var.yres_virtual ||
 414                     var->xoffset)
 415                         return -EINVAL;
 416         } else {
 417                 if (var->xoffset + var->xres > info->var.xres_virtual
 418                  || var->yoffset + var->yres > info->var.yres_virtual
 419                  || var->yoffset % 8)
 420                         return -EINVAL;
 421         }
 422
 423         hga_pan(var->xoffset, var->yoffset);
 424         return 0;
 425 }
 426
 427 /**
 428  *      hgafb_blank - (un)blank the screen
 429  *      @blank_mode:blanking method to use
 430  *      @info:unused
 431  *
 432  *      Blank the screen if blank_mode != 0, else unblank.
 433  *      Implements VESA suspend and powerdown modes on hardware that supports
 434  *      disabling hsync/vsync:
 435  *              @blank_mode == 2 means suspend vsync,
 436  *              @blank_mode == 3 means suspend hsync,
 437  *              @blank_mode == 4 means powerdown.
 438  */
 439
 440 static int hgafb_blank(int blank_mode, struct fb_info *info)
 441 {
 442         hga_blank(blank_mode);
 443         return 0;
 444 }
 445
 446 /*
 447  * Accel functions
 448  */
 449 #ifdef CONFIG_FB_HGA_ACCEL
 450 static void hgafb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
 451 {
 452         u_int rows, y;
 453         u8 __iomem *dest;
 454
 455         y = rect->dy;
 456
 457         for (rows = rect->height; rows--; y++) {
 458                 dest = rowaddr(info, y) + (rect->dx >> 3);
 459                 switch (rect->rop) {
 460                 case ROP_COPY:
 461                         //fb_memset(dest, rect->color, (rect->width >> 3));
 462                         break;
 463                 case ROP_XOR:
 464                         fb_writeb(~(fb_readb(dest)), dest);
 465                         break;
 466                 }
 467         }
 468 }
 469
 470 static void hgafb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
 471 {
 472         u_int rows, y1, y2;
 473         u8 __iomem *src;
 474         u8 __iomem *dest;
 475
 476         if (area->dy <= area->sy) {
 477                 y1 = area->sy;
 478                 y2 = area->dy;
 479
 480                 for (rows = area->height; rows--; ) {
 481                         src = rowaddr(info, y1) + (area->sx >> 3);
 482                         dest = rowaddr(info, y2) + (area->dx >> 3);
 483                         //fb_memmove(dest, src, (area->width >> 3));
 484                         y1++;
 485                         y2++;
 486                 }
 487         } else {
 488                 y1 = area->sy + area->height - 1;
 489                 y2 = area->dy + area->height - 1;
 490
 491                 for (rows = area->height; rows--;) {
 492                         src = rowaddr(info, y1) + (area->sx >> 3);
 493                         dest = rowaddr(info, y2) + (area->dx >> 3);
 494                         //fb_memmove(dest, src, (area->width >> 3));
 495                         y1--;
 496                         y2--;
 497                 }
 498         }
 499 }
 500
 501 static void hgafb_imageblit(struct fb_info *info, const struct fb_image *image)
 502 {
 503         u8 __iomem *dest;
 504         u8 *cdat = (u8 *) image->data;
 505         u_int rows, y = image->dy;
 506         u8 d;
 507
 508         for (rows = image->height; rows--; y++) {
 509                 d = *cdat++;
 510                 dest = rowaddr(info, y) + (image->dx >> 3);
 511                 fb_writeb(d, dest);
 512         }
 513 }
 514 #else /* !CONFIG_FB_HGA_ACCEL */
 515 #define hgafb_fillrect cfb_fillrect
 516 #define hgafb_copyarea cfb_copyarea
 517 #define hgafb_imageblit cfb_imageblit
 518 #endif /* CONFIG_FB_HGA_ACCEL */
 519
 520
 521 static struct fb_ops hgafb_ops = {
 522         .owner          = THIS_MODULE,
 523         .fb_open        = hgafb_open,
 524         .fb_release     = hgafb_release,
 525         .fb_setcolreg   = hgafb_setcolreg,
 526         .fb_pan_display = hgafb_pan_display,
 527         .fb_blank       = hgafb_blank,
 528         .fb_fillrect    = hgafb_fillrect,
 529         .fb_copyarea    = hgafb_copyarea,
 530         .fb_imageblit   = hgafb_imageblit,
 531 };
 532
 533 /* ------------------------------------------------------------------------- *
 534  *
 535  * Functions in fb_info
 536  *
 537  * ------------------------------------------------------------------------- */
 538
 539 /* ------------------------------------------------------------------------- */
 540
 541         /*
 542          *  Initialization
 543          */
 544
 545 static int __devinit hgafb_probe(struct platform_device *pdev)
 546 {
 547         struct fb_info *info;
 548
 549         if (! hga_card_detect()) {
 550                 printk(KERN_INFO "hgafb: HGA card not detected.\n");
 551                 if (hga_vram)
 552                         iounmap(hga_vram);
 553                 return -EINVAL;
 554         }
 555
 556         printk(KERN_INFO "hgafb: %s with %ldK of memory detected.\n",
 557                 hga_type_name, hga_vram_len/1024);
 558
 559         info = framebuffer_alloc(0, &pdev->dev);
 560         if (!info) {
 561                 iounmap(hga_vram);
 562                 return -ENOMEM;
 563         }
 564
 565         hga_fix.smem_start = (unsigned long)hga_vram;
 566         hga_fix.smem_len = hga_vram_len;
 567
 568         info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
 569         info->var = hga_default_var;
 570         info->fix = hga_fix;
 571         info->monspecs.hfmin = 0;
 572         info->monspecs.hfmax = 0;
 573         info->monspecs.vfmin = 10000;
 574         info->monspecs.vfmax = 10000;
 575         info->monspecs.dpms = 0;
 576         info->fbops = &hgafb_ops;
 577         info->screen_base = hga_vram;
 578
 579         if (register_framebuffer(info) < 0) {
 580                 framebuffer_release(info);
 581                 iounmap(hga_vram);
 582                 return -EINVAL;
 583         }
 584
 585         printk(KERN_INFO "fb%d: %s frame buffer device\n",
 586                info->node, info->fix.id);
 587         platform_set_drvdata(pdev, info);
 588         return 0;
 589 }
 590
 591 static int __devexit hgafb_remove(struct platform_device *pdev)
 592 {
 593         struct fb_info *info = platform_get_drvdata(pdev);
 594
 595         hga_txt_mode();
 596         hga_clear_screen();
 597
 598         if (info) {
 599                 unregister_framebuffer(info);
 600                 framebuffer_release(info);
 601         }
 602
 603         iounmap(hga_vram);
 604
 605         if (release_io_ports)
 606                 release_region(0x3b0, 12);
 607
 608         if (release_io_port)
 609                 release_region(0x3bf, 1);
 610
 611         return 0;
 612 }
 613
 614 static struct platform_driver hgafb_driver = {
 615         .probe = hgafb_probe,
 616         .remove = __devexit_p(hgafb_remove),
 617         .driver = {
 618                 .name = "hgafb",
 619         },
 620 };
 621
 622 static struct platform_device *hgafb_device;
 623
 624 static int __init hgafb_init(void)
 625 {
 626         int ret;
 627
 628         if (fb_get_options("hgafb", NULL))
 629                 return -ENODEV;
 630
 631         ret = platform_driver_register(&hgafb_driver);
 632
 633         if (!ret) {
 634                 hgafb_device = platform_device_register_simple("hgafb", 0, NULL, 0);
 635
 636                 if (IS_ERR(hgafb_device)) {
 637                         platform_driver_unregister(&hgafb_driver);
 638                         ret = PTR_ERR(hgafb_device);
 639                 }
 640         }
 641
 642         return ret;
 643 }
 644
 645 static void __exit hgafb_exit(void)
 646 {
 647         platform_device_unregister(hgafb_device);
 648         platform_driver_unregister(&hgafb_driver);
 649 }
 650
 651 /* -------------------------------------------------------------------------
 652  *
 653  *  Modularization
 654  *
 655  * ------------------------------------------------------------------------- */
 656
 657 MODULE_AUTHOR("Ferenc Bakonyi (fero@drama.obuda.kando.hu)");
 658 MODULE_DESCRIPTION("FBDev driver for Hercules Graphics Adaptor");
 659 MODULE_LICENSE("GPL");
 660
 661 module_param(nologo, bool, 0);
 662 MODULE_PARM_DESC(nologo, "Disables startup logo if != 0 (default=0)");
 663 module_init(hgafb_init);
 664 module_exit(hgafb_exit);