linux/drivers/video/hgafb.c
<<
>>
Prefs
   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#if 0
  48#define DPRINTK(args...) printk(KERN_DEBUG __FILE__": " ##args)
  49#else
  50#define DPRINTK(args...)
  51#endif
  52
  53#if 0
  54#define CHKINFO(ret) if (info != &fb_info) { printk(KERN_DEBUG __FILE__": This should never happen, line:%d \n", __LINE__); return ret; }
  55#else
  56#define CHKINFO(ret)
  57#endif
  58
  59/* Description of the hardware layout */
  60
  61static void __iomem *hga_vram;                  /* Base of video memory */
  62static unsigned long hga_vram_len;              /* Size of video memory */
  63
  64#define HGA_ROWADDR(row) ((row%4)*8192 + (row>>2)*90)
  65#define HGA_TXT                 0
  66#define HGA_GFX                 1
  67
  68static inline u8 __iomem * rowaddr(struct fb_info *info, u_int row)
  69{
  70        return info->screen_base + HGA_ROWADDR(row);
  71}
  72
  73static int hga_mode = -1;                       /* 0 = txt, 1 = gfx mode */
  74
  75static enum { TYPE_HERC, TYPE_HERCPLUS, TYPE_HERCCOLOR } hga_type;
  76static char *hga_type_name;
  77
  78#define HGA_INDEX_PORT          0x3b4           /* Register select port */
  79#define HGA_VALUE_PORT          0x3b5           /* Register value port */
  80#define HGA_MODE_PORT           0x3b8           /* Mode control port */
  81#define HGA_STATUS_PORT         0x3ba           /* Status and Config port */
  82#define HGA_GFX_PORT            0x3bf           /* Graphics control port */
  83
  84/* HGA register values */
  85
  86#define HGA_CURSOR_BLINKING     0x00
  87#define HGA_CURSOR_OFF          0x20
  88#define HGA_CURSOR_SLOWBLINK    0x60
  89
  90#define HGA_MODE_GRAPHICS       0x02
  91#define HGA_MODE_VIDEO_EN       0x08
  92#define HGA_MODE_BLINK_EN       0x20
  93#define HGA_MODE_GFX_PAGE1      0x80
  94
  95#define HGA_STATUS_HSYNC        0x01
  96#define HGA_STATUS_VSYNC        0x80
  97#define HGA_STATUS_VIDEO        0x08
  98
  99#define HGA_CONFIG_COL132       0x08
 100#define HGA_GFX_MODE_EN         0x01
 101#define HGA_GFX_PAGE_EN         0x02
 102
 103/* Global locks */
 104
 105static DEFINE_SPINLOCK(hga_reg_lock);
 106
 107/* Framebuffer driver structures */
 108
 109static struct fb_var_screeninfo hga_default_var __devinitdata = {
 110        .xres           = 720,
 111        .yres           = 348,
 112        .xres_virtual   = 720,
 113        .yres_virtual   = 348,
 114        .bits_per_pixel = 1,
 115        .red            = {0, 1, 0},
 116        .green          = {0, 1, 0},
 117        .blue           = {0, 1, 0},
 118        .transp         = {0, 0, 0},
 119        .height         = -1,
 120        .width          = -1,
 121};
 122
 123static struct fb_fix_screeninfo hga_fix __devinitdata = {
 124        .id             = "HGA",
 125        .type           = FB_TYPE_PACKED_PIXELS,        /* (not sure) */
 126        .visual         = FB_VISUAL_MONO10,
 127        .xpanstep       = 8,
 128        .ypanstep       = 8,
 129        .line_length    = 90,
 130        .accel          = FB_ACCEL_NONE
 131};
 132
 133/* Don't assume that tty1 will be the initial current console. */
 134static int release_io_port = 0;
 135static int release_io_ports = 0;
 136static bool nologo = 0;
 137
 138/* -------------------------------------------------------------------------
 139 *
 140 * Low level hardware functions
 141 *
 142 * ------------------------------------------------------------------------- */
 143
 144static void write_hga_b(unsigned int val, unsigned char reg)
 145{
 146        outb_p(reg, HGA_INDEX_PORT); 
 147        outb_p(val, HGA_VALUE_PORT);
 148}
 149
 150static void write_hga_w(unsigned int val, unsigned char reg)
 151{
 152        outb_p(reg,   HGA_INDEX_PORT); outb_p(val >> 8,   HGA_VALUE_PORT);
 153        outb_p(reg+1, HGA_INDEX_PORT); outb_p(val & 0xff, HGA_VALUE_PORT);
 154}
 155
 156static int test_hga_b(unsigned char val, unsigned char reg)
 157{
 158        outb_p(reg, HGA_INDEX_PORT); 
 159        outb  (val, HGA_VALUE_PORT);
 160        udelay(20); val = (inb_p(HGA_VALUE_PORT) == val);
 161        return val;
 162}
 163
 164static void hga_clear_screen(void)
 165{
 166        unsigned char fillchar = 0xbf; /* magic */
 167        unsigned long flags;
 168
 169        spin_lock_irqsave(&hga_reg_lock, flags);
 170        if (hga_mode == HGA_TXT)
 171                fillchar = ' ';
 172        else if (hga_mode == HGA_GFX)
 173                fillchar = 0x00;
 174        spin_unlock_irqrestore(&hga_reg_lock, flags);
 175        if (fillchar != 0xbf)
 176                memset_io(hga_vram, fillchar, hga_vram_len);
 177}
 178
 179static void hga_txt_mode(void)
 180{
 181        unsigned long flags;
 182
 183        spin_lock_irqsave(&hga_reg_lock, flags);
 184        outb_p(HGA_MODE_VIDEO_EN | HGA_MODE_BLINK_EN, HGA_MODE_PORT);
 185        outb_p(0x00, HGA_GFX_PORT);
 186        outb_p(0x00, HGA_STATUS_PORT);
 187
 188        write_hga_b(0x61, 0x00);        /* horizontal total */
 189        write_hga_b(0x50, 0x01);        /* horizontal displayed */
 190        write_hga_b(0x52, 0x02);        /* horizontal sync pos */
 191        write_hga_b(0x0f, 0x03);        /* horizontal sync width */
 192
 193        write_hga_b(0x19, 0x04);        /* vertical total */
 194        write_hga_b(0x06, 0x05);        /* vertical total adjust */
 195        write_hga_b(0x19, 0x06);        /* vertical displayed */
 196        write_hga_b(0x19, 0x07);        /* vertical sync pos */
 197
 198        write_hga_b(0x02, 0x08);        /* interlace mode */
 199        write_hga_b(0x0d, 0x09);        /* maximum scanline */
 200        write_hga_b(0x0c, 0x0a);        /* cursor start */
 201        write_hga_b(0x0d, 0x0b);        /* cursor end */
 202
 203        write_hga_w(0x0000, 0x0c);      /* start address */
 204        write_hga_w(0x0000, 0x0e);      /* cursor location */
 205
 206        hga_mode = HGA_TXT;
 207        spin_unlock_irqrestore(&hga_reg_lock, flags);
 208}
 209
 210static void hga_gfx_mode(void)
 211{
 212        unsigned long flags;
 213
 214        spin_lock_irqsave(&hga_reg_lock, flags);
 215        outb_p(0x00, HGA_STATUS_PORT);
 216        outb_p(HGA_GFX_MODE_EN, HGA_GFX_PORT);
 217        outb_p(HGA_MODE_VIDEO_EN | HGA_MODE_GRAPHICS, HGA_MODE_PORT);
 218
 219        write_hga_b(0x35, 0x00);        /* horizontal total */
 220        write_hga_b(0x2d, 0x01);        /* horizontal displayed */
 221        write_hga_b(0x2e, 0x02);        /* horizontal sync pos */
 222        write_hga_b(0x07, 0x03);        /* horizontal sync width */
 223
 224        write_hga_b(0x5b, 0x04);        /* vertical total */
 225        write_hga_b(0x02, 0x05);        /* vertical total adjust */
 226        write_hga_b(0x57, 0x06);        /* vertical displayed */
 227        write_hga_b(0x57, 0x07);        /* vertical sync pos */
 228
 229        write_hga_b(0x02, 0x08);        /* interlace mode */
 230        write_hga_b(0x03, 0x09);        /* maximum scanline */
 231        write_hga_b(0x00, 0x0a);        /* cursor start */
 232        write_hga_b(0x00, 0x0b);        /* cursor end */
 233
 234        write_hga_w(0x0000, 0x0c);      /* start address */
 235        write_hga_w(0x0000, 0x0e);      /* cursor location */
 236
 237        hga_mode = HGA_GFX;
 238        spin_unlock_irqrestore(&hga_reg_lock, flags);
 239}
 240
 241static void hga_show_logo(struct fb_info *info)
 242{
 243/*
 244        void __iomem *dest = hga_vram;
 245        char *logo = linux_logo_bw;
 246        int x, y;
 247        
 248        for (y = 134; y < 134 + 80 ; y++) * this needs some cleanup *
 249                for (x = 0; x < 10 ; x++)
 250                        writeb(~*(logo++),(dest + HGA_ROWADDR(y) + x + 40));
 251*/
 252}
 253
 254static void hga_pan(unsigned int xoffset, unsigned int yoffset)
 255{
 256        unsigned int base;
 257        unsigned long flags;
 258        
 259        base = (yoffset / 8) * 90 + xoffset;
 260        spin_lock_irqsave(&hga_reg_lock, flags);
 261        write_hga_w(base, 0x0c);        /* start address */
 262        spin_unlock_irqrestore(&hga_reg_lock, flags);
 263        DPRINTK("hga_pan: base:%d\n", base);
 264}
 265
 266static void hga_blank(int blank_mode)
 267{
 268        unsigned long flags;
 269
 270        spin_lock_irqsave(&hga_reg_lock, flags);
 271        if (blank_mode) {
 272                outb_p(0x00, HGA_MODE_PORT);    /* disable video */
 273        } else {
 274                outb_p(HGA_MODE_VIDEO_EN | HGA_MODE_GRAPHICS, HGA_MODE_PORT);
 275        }
 276        spin_unlock_irqrestore(&hga_reg_lock, flags);
 277}
 278
 279static int __devinit hga_card_detect(void)
 280{
 281        int count = 0;
 282        void __iomem *p, *q;
 283        unsigned short p_save, q_save;
 284
 285        hga_vram_len  = 0x08000;
 286
 287        hga_vram = ioremap(0xb0000, hga_vram_len);
 288
 289        if (request_region(0x3b0, 12, "hgafb"))
 290                release_io_ports = 1;
 291        if (request_region(0x3bf, 1, "hgafb"))
 292                release_io_port = 1;
 293
 294        /* do a memory check */
 295
 296        p = hga_vram;
 297        q = hga_vram + 0x01000;
 298
 299        p_save = readw(p); q_save = readw(q);
 300
 301        writew(0xaa55, p); if (readw(p) == 0xaa55) count++;
 302        writew(0x55aa, p); if (readw(p) == 0x55aa) count++;
 303        writew(p_save, p);
 304
 305        if (count != 2)
 306                goto error;
 307
 308        /* Ok, there is definitely a card registering at the correct
 309         * memory location, so now we do an I/O port test.
 310         */
 311        
 312        if (!test_hga_b(0x66, 0x0f))        /* cursor low register */
 313                goto error;
 314
 315        if (!test_hga_b(0x99, 0x0f))     /* cursor low register */
 316                goto error;
 317
 318        /* See if the card is a Hercules, by checking whether the vsync
 319         * bit of the status register is changing.  This test lasts for
 320         * approximately 1/10th of a second.
 321         */
 322        
 323        p_save = q_save = inb_p(HGA_STATUS_PORT) & HGA_STATUS_VSYNC;
 324
 325        for (count=0; count < 50000 && p_save == q_save; count++) {
 326                q_save = inb(HGA_STATUS_PORT) & HGA_STATUS_VSYNC;
 327                udelay(2);
 328        }
 329
 330        if (p_save == q_save) 
 331                goto error;
 332
 333        switch (inb_p(HGA_STATUS_PORT) & 0x70) {
 334                case 0x10:
 335                        hga_type = TYPE_HERCPLUS;
 336                        hga_type_name = "HerculesPlus";
 337                        break;
 338                case 0x50:
 339                        hga_type = TYPE_HERCCOLOR;
 340                        hga_type_name = "HerculesColor";
 341                        break;
 342                default:
 343                        hga_type = TYPE_HERC;
 344                        hga_type_name = "Hercules";
 345                        break;
 346        }
 347        return 1;
 348error:
 349        if (release_io_ports)
 350                release_region(0x3b0, 12);
 351        if (release_io_port)
 352                release_region(0x3bf, 1);
 353        return 0;
 354}
 355
 356/**
 357 *      hgafb_open - open the framebuffer device
 358 *      @info:pointer to fb_info object containing info for current hga board
 359 *      @int:open by console system or userland.
 360 */
 361
 362static int hgafb_open(struct fb_info *info, int init)
 363{
 364        hga_gfx_mode();
 365        hga_clear_screen();
 366        if (!nologo) hga_show_logo(info);
 367        return 0;
 368}
 369
 370/**
 371 *      hgafb_open - open the framebuffer device
 372 *      @info:pointer to fb_info object containing info for current hga board
 373 *      @int:open by console system or userland.
 374 */
 375
 376static int hgafb_release(struct fb_info *info, int init)
 377{
 378        hga_txt_mode();
 379        hga_clear_screen();
 380        return 0;
 381}
 382
 383/**
 384 *      hgafb_setcolreg - set color registers
 385 *      @regno:register index to set
 386 *      @red:red value, unused
 387 *      @green:green value, unused
 388 *      @blue:blue value, unused
 389 *      @transp:transparency value, unused
 390 *      @info:unused
 391 *
 392 *      This callback function is used to set the color registers of a HGA
 393 *      board. Since we have only two fixed colors only @regno is checked.
 394 *      A zero is returned on success and 1 for failure.
 395 */
 396
 397static int hgafb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
 398                           u_int transp, struct fb_info *info)
 399{
 400        if (regno > 1)
 401                return 1;
 402        return 0;
 403}
 404
 405/**
 406 *      hga_pan_display - pan or wrap the display
 407 *      @var:contains new xoffset, yoffset and vmode values
 408 *      @info:pointer to fb_info object containing info for current hga board
 409 *
 410 *      This function looks only at xoffset, yoffset and the %FB_VMODE_YWRAP
 411 *      flag in @var. If input parameters are correct it calls hga_pan() to 
 412 *      program the hardware. @info->var is updated to the new values.
 413 *      A zero is returned on success and %-EINVAL for failure.
 414 */
 415
 416static int hgafb_pan_display(struct fb_var_screeninfo *var,
 417                             struct fb_info *info)
 418{
 419        if (var->vmode & FB_VMODE_YWRAP) {
 420                if (var->yoffset < 0 || 
 421                    var->yoffset >= info->var.yres_virtual ||
 422                    var->xoffset)
 423                        return -EINVAL;
 424        } else {
 425                if (var->xoffset + info->var.xres > info->var.xres_virtual
 426                 || var->yoffset + info->var.yres > info->var.yres_virtual
 427                 || var->yoffset % 8)
 428                        return -EINVAL;
 429        }
 430
 431        hga_pan(var->xoffset, var->yoffset);
 432        return 0;
 433}
 434
 435/**
 436 *      hgafb_blank - (un)blank the screen
 437 *      @blank_mode:blanking method to use
 438 *      @info:unused
 439 *      
 440 *      Blank the screen if blank_mode != 0, else unblank. 
 441 *      Implements VESA suspend and powerdown modes on hardware that supports 
 442 *      disabling hsync/vsync:
 443 *              @blank_mode == 2 means suspend vsync,
 444 *              @blank_mode == 3 means suspend hsync,
 445 *              @blank_mode == 4 means powerdown.
 446 */
 447
 448static int hgafb_blank(int blank_mode, struct fb_info *info)
 449{
 450        hga_blank(blank_mode);
 451        return 0;
 452}
 453
 454/*
 455 * Accel functions
 456 */
 457static void hgafb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
 458{
 459        u_int rows, y;
 460        u8 __iomem *dest;
 461
 462        y = rect->dy;
 463
 464        for (rows = rect->height; rows--; y++) {
 465                dest = rowaddr(info, y) + (rect->dx >> 3);
 466                switch (rect->rop) {
 467                case ROP_COPY:
 468                        memset_io(dest, rect->color, (rect->width >> 3));
 469                        break;
 470                case ROP_XOR:
 471                        fb_writeb(~(fb_readb(dest)), dest);
 472                        break;
 473                }
 474        }
 475}
 476
 477static void hgafb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
 478{
 479        u_int rows, y1, y2;
 480        u8 __iomem *src;
 481        u8 __iomem *dest;
 482
 483        if (area->dy <= area->sy) {
 484                y1 = area->sy;
 485                y2 = area->dy;
 486
 487                for (rows = area->height; rows--; ) {
 488                        src = rowaddr(info, y1) + (area->sx >> 3);
 489                        dest = rowaddr(info, y2) + (area->dx >> 3);
 490                        memmove(dest, src, (area->width >> 3));
 491                        y1++;
 492                        y2++;
 493                }
 494        } else {
 495                y1 = area->sy + area->height - 1;
 496                y2 = area->dy + area->height - 1;
 497
 498                for (rows = area->height; rows--;) {
 499                        src = rowaddr(info, y1) + (area->sx >> 3);
 500                        dest = rowaddr(info, y2) + (area->dx >> 3);
 501                        memmove(dest, src, (area->width >> 3));
 502                        y1--;
 503                        y2--;
 504                }
 505        }
 506}
 507
 508static void hgafb_imageblit(struct fb_info *info, const struct fb_image *image)
 509{
 510        u8 __iomem *dest;
 511        u8 *cdat = (u8 *) image->data;
 512        u_int rows, y = image->dy;
 513        u_int x;
 514        u8 d;
 515
 516        for (rows = image->height; rows--; y++) {
 517                for (x = 0; x < image->width; x+= 8) {
 518                        d = *cdat++;
 519                        dest = rowaddr(info, y) + ((image->dx + x)>> 3);
 520                        fb_writeb(d, dest);
 521                }
 522        }
 523}
 524
 525static struct fb_ops hgafb_ops = {
 526        .owner          = THIS_MODULE,
 527        .fb_open        = hgafb_open,
 528        .fb_release     = hgafb_release,
 529        .fb_setcolreg   = hgafb_setcolreg,
 530        .fb_pan_display = hgafb_pan_display,
 531        .fb_blank       = hgafb_blank,
 532        .fb_fillrect    = hgafb_fillrect,
 533        .fb_copyarea    = hgafb_copyarea,
 534        .fb_imageblit   = hgafb_imageblit,
 535};
 536                
 537/* ------------------------------------------------------------------------- *
 538 *
 539 * Functions in fb_info
 540 * 
 541 * ------------------------------------------------------------------------- */
 542
 543/* ------------------------------------------------------------------------- */
 544    
 545        /*
 546         *  Initialization
 547         */
 548
 549static int __devinit hgafb_probe(struct platform_device *pdev)
 550{
 551        struct fb_info *info;
 552
 553        if (! hga_card_detect()) {
 554                printk(KERN_INFO "hgafb: HGA card not detected.\n");
 555                if (hga_vram)
 556                        iounmap(hga_vram);
 557                return -EINVAL;
 558        }
 559
 560        printk(KERN_INFO "hgafb: %s with %ldK of memory detected.\n",
 561                hga_type_name, hga_vram_len/1024);
 562
 563        info = framebuffer_alloc(0, &pdev->dev);
 564        if (!info) {
 565                iounmap(hga_vram);
 566                return -ENOMEM;
 567        }
 568
 569        hga_fix.smem_start = (unsigned long)hga_vram;
 570        hga_fix.smem_len = hga_vram_len;
 571
 572        info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
 573        info->var = hga_default_var;
 574        info->fix = hga_fix;
 575        info->monspecs.hfmin = 0;
 576        info->monspecs.hfmax = 0;
 577        info->monspecs.vfmin = 10000;
 578        info->monspecs.vfmax = 10000;
 579        info->monspecs.dpms = 0;
 580        info->fbops = &hgafb_ops;
 581        info->screen_base = hga_vram;
 582
 583        if (register_framebuffer(info) < 0) {
 584                framebuffer_release(info);
 585                iounmap(hga_vram);
 586                return -EINVAL;
 587        }
 588
 589        printk(KERN_INFO "fb%d: %s frame buffer device\n",
 590               info->node, info->fix.id);
 591        platform_set_drvdata(pdev, info);
 592        return 0;
 593}
 594
 595static int __devexit hgafb_remove(struct platform_device *pdev)
 596{
 597        struct fb_info *info = platform_get_drvdata(pdev);
 598
 599        hga_txt_mode();
 600        hga_clear_screen();
 601
 602        if (info) {
 603                unregister_framebuffer(info);
 604                framebuffer_release(info);
 605        }
 606
 607        iounmap(hga_vram);
 608
 609        if (release_io_ports)
 610                release_region(0x3b0, 12);
 611
 612        if (release_io_port)
 613                release_region(0x3bf, 1);
 614
 615        return 0;
 616}
 617
 618static struct platform_driver hgafb_driver = {
 619        .probe = hgafb_probe,
 620        .remove = __devexit_p(hgafb_remove),
 621        .driver = {
 622                .name = "hgafb",
 623        },
 624};
 625
 626static struct platform_device *hgafb_device;
 627
 628static int __init hgafb_init(void)
 629{
 630        int ret;
 631
 632        if (fb_get_options("hgafb", NULL))
 633                return -ENODEV;
 634
 635        ret = platform_driver_register(&hgafb_driver);
 636
 637        if (!ret) {
 638                hgafb_device = platform_device_register_simple("hgafb", 0, NULL, 0);
 639
 640                if (IS_ERR(hgafb_device)) {
 641                        platform_driver_unregister(&hgafb_driver);
 642                        ret = PTR_ERR(hgafb_device);
 643                }
 644        }
 645
 646        return ret;
 647}
 648
 649static void __exit hgafb_exit(void)
 650{
 651        platform_device_unregister(hgafb_device);
 652        platform_driver_unregister(&hgafb_driver);
 653}
 654
 655/* -------------------------------------------------------------------------
 656 *
 657 *  Modularization
 658 *
 659 * ------------------------------------------------------------------------- */
 660
 661MODULE_AUTHOR("Ferenc Bakonyi (fero@drama.obuda.kando.hu)");
 662MODULE_DESCRIPTION("FBDev driver for Hercules Graphics Adaptor");
 663MODULE_LICENSE("GPL");
 664
 665module_param(nologo, bool, 0);
 666MODULE_PARM_DESC(nologo, "Disables startup logo if != 0 (default=0)");
 667module_init(hgafb_init);
 668module_exit(hgafb_exit);
 669
lxr.linux.no kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.