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0001 /*
0002  * linux/drivers/video/hgafb.c -- Hercules graphics adaptor frame buffer device
0003  * 
0004  *      Created 25 Nov 1999 by Ferenc Bakonyi (fero@drama.obuda.kando.hu)
0005  *      Based on skeletonfb.c by Geert Uytterhoeven and
0006  *               mdacon.c by Andrew Apted
0007  *
0008  * History:
0009  *
0010  * - Revision 0.1.8 (23 Oct 2002): Ported to new framebuffer api.
0011  * 
0012  * - Revision 0.1.7 (23 Jan 2001): fix crash resulting from MDA only cards 
0013  *                 being detected as Hercules.   (Paul G.)
0014  * - Revision 0.1.6 (17 Aug 2000): new style structs
0015  *                                 documentation
0016  * - Revision 0.1.5 (13 Mar 2000): spinlocks instead of saveflags();cli();etc
0017  *                                 minor fixes
0018  * - Revision 0.1.4 (24 Jan 2000): fixed a bug in hga_card_detect() for 
0019  *                                  HGA-only systems
0020  * - Revision 0.1.3 (22 Jan 2000): modified for the new fb_info structure
0021  *                                 screen is cleared after rmmod
0022  *                                 virtual resolutions
0023  *                                 module parameter 'nologo={0|1}'
0024  *                                 the most important: boot logo :)
0025  * - Revision 0.1.0  (6 Dec 1999): faster scrolling and minor fixes
0026  * - First release  (25 Nov 1999)
0027  *
0028  * This file is subject to the terms and conditions of the GNU General Public
0029  * License.  See the file COPYING in the main directory of this archive
0030  * for more details.
0031  */
0032 
0033 #include <linux/module.h>
0034 #include <linux/kernel.h>
0035 #include <linux/errno.h>
0036 #include <linux/spinlock.h>
0037 #include <linux/string.h>
0038 #include <linux/mm.h>
0039 #include <linux/delay.h>
0040 #include <linux/fb.h>
0041 #include <linux/init.h>
0042 #include <linux/ioport.h>
0043 #include <linux/platform_device.h>
0044 #include <asm/io.h>
0045 #include <asm/vga.h>
0046 
0047 #if 0
0048 #define DPRINTK(args...) printk(KERN_DEBUG __FILE__": " ##args)
0049 #else
0050 #define DPRINTK(args...)
0051 #endif
0052 
0053 #if 0
0054 #define CHKINFO(ret) if (info != &fb_info) { printk(KERN_DEBUG __FILE__": This should never happen, line:%d \n", __LINE__); return ret; }
0055 #else
0056 #define CHKINFO(ret)
0057 #endif
0058 
0059 /* Description of the hardware layout */
0060 
0061 static void __iomem *hga_vram;          /* Base of video memory */
0062 static unsigned long hga_vram_len;      /* Size of video memory */
0063 
0064 #define HGA_ROWADDR(row) ((row%4)*8192 + (row>>2)*90)
0065 #define HGA_TXT         0
0066 #define HGA_GFX         1
0067 
0068 static inline u8 __iomem * rowaddr(struct fb_info *info, u_int row)
0069 {
0070     return info->screen_base + HGA_ROWADDR(row);
0071 }
0072 
0073 static int hga_mode = -1;           /* 0 = txt, 1 = gfx mode */
0074 
0075 static enum { TYPE_HERC, TYPE_HERCPLUS, TYPE_HERCCOLOR } hga_type;
0076 static char *hga_type_name;
0077 
0078 #define HGA_INDEX_PORT      0x3b4       /* Register select port */
0079 #define HGA_VALUE_PORT      0x3b5       /* Register value port */
0080 #define HGA_MODE_PORT       0x3b8       /* Mode control port */
0081 #define HGA_STATUS_PORT     0x3ba       /* Status and Config port */
0082 #define HGA_GFX_PORT        0x3bf       /* Graphics control port */
0083 
0084 /* HGA register values */
0085 
0086 #define HGA_CURSOR_BLINKING 0x00
0087 #define HGA_CURSOR_OFF      0x20
0088 #define HGA_CURSOR_SLOWBLINK    0x60
0089 
0090 #define HGA_MODE_GRAPHICS   0x02
0091 #define HGA_MODE_VIDEO_EN   0x08
0092 #define HGA_MODE_BLINK_EN   0x20
0093 #define HGA_MODE_GFX_PAGE1  0x80
0094 
0095 #define HGA_STATUS_HSYNC    0x01
0096 #define HGA_STATUS_VSYNC    0x80
0097 #define HGA_STATUS_VIDEO    0x08
0098 
0099 #define HGA_CONFIG_COL132   0x08
0100 #define HGA_GFX_MODE_EN     0x01
0101 #define HGA_GFX_PAGE_EN     0x02
0102 
0103 /* Global locks */
0104 
0105 static DEFINE_SPINLOCK(hga_reg_lock);
0106 
0107 /* Framebuffer driver structures */
0108 
0109 static const struct fb_var_screeninfo hga_default_var = {
0110     .xres       = 720,
0111     .yres       = 348,
0112     .xres_virtual   = 720,
0113     .yres_virtual   = 348,
0114     .bits_per_pixel = 1,
0115     .red        = {0, 1, 0},
0116     .green      = {0, 1, 0},
0117     .blue       = {0, 1, 0},
0118     .transp     = {0, 0, 0},
0119     .height     = -1,
0120     .width      = -1,
0121 };
0122 
0123 static struct fb_fix_screeninfo hga_fix = {
0124     .id         = "HGA",
0125     .type       = FB_TYPE_PACKED_PIXELS,    /* (not sure) */
0126     .visual     = FB_VISUAL_MONO10,
0127     .xpanstep   = 8,
0128     .ypanstep   = 8,
0129     .line_length    = 90,
0130     .accel      = FB_ACCEL_NONE
0131 };
0132 
0133 /* Don't assume that tty1 will be the initial current console. */
0134 static int release_io_port = 0;
0135 static int release_io_ports = 0;
0136 static bool nologo = 0;
0137 
0138 /* -------------------------------------------------------------------------
0139  *
0140  * Low level hardware functions
0141  *
0142  * ------------------------------------------------------------------------- */
0143 
0144 static void write_hga_b(unsigned int val, unsigned char reg)
0145 {
0146     outb_p(reg, HGA_INDEX_PORT); 
0147     outb_p(val, HGA_VALUE_PORT);
0148 }
0149 
0150 static void write_hga_w(unsigned int val, unsigned char reg)
0151 {
0152     outb_p(reg,   HGA_INDEX_PORT); outb_p(val >> 8,   HGA_VALUE_PORT);
0153     outb_p(reg+1, HGA_INDEX_PORT); outb_p(val & 0xff, HGA_VALUE_PORT);
0154 }
0155 
0156 static int test_hga_b(unsigned char val, unsigned char reg)
0157 {
0158     outb_p(reg, HGA_INDEX_PORT); 
0159     outb  (val, HGA_VALUE_PORT);
0160     udelay(20); val = (inb_p(HGA_VALUE_PORT) == val);
0161     return val;
0162 }
0163 
0164 static void hga_clear_screen(void)
0165 {
0166     unsigned char fillchar = 0xbf; /* magic */
0167     unsigned long flags;
0168 
0169     spin_lock_irqsave(&hga_reg_lock, flags);
0170     if (hga_mode == HGA_TXT)
0171         fillchar = ' ';
0172     else if (hga_mode == HGA_GFX)
0173         fillchar = 0x00;
0174     spin_unlock_irqrestore(&hga_reg_lock, flags);
0175     if (fillchar != 0xbf)
0176         memset_io(hga_vram, fillchar, hga_vram_len);
0177 }
0178 
0179 static void hga_txt_mode(void)
0180 {
0181     unsigned long flags;
0182 
0183     spin_lock_irqsave(&hga_reg_lock, flags);
0184     outb_p(HGA_MODE_VIDEO_EN | HGA_MODE_BLINK_EN, HGA_MODE_PORT);
0185     outb_p(0x00, HGA_GFX_PORT);
0186     outb_p(0x00, HGA_STATUS_PORT);
0187 
0188     write_hga_b(0x61, 0x00);    /* horizontal total */
0189     write_hga_b(0x50, 0x01);    /* horizontal displayed */
0190     write_hga_b(0x52, 0x02);    /* horizontal sync pos */
0191     write_hga_b(0x0f, 0x03);    /* horizontal sync width */
0192 
0193     write_hga_b(0x19, 0x04);    /* vertical total */
0194     write_hga_b(0x06, 0x05);    /* vertical total adjust */
0195     write_hga_b(0x19, 0x06);    /* vertical displayed */
0196     write_hga_b(0x19, 0x07);    /* vertical sync pos */
0197 
0198     write_hga_b(0x02, 0x08);    /* interlace mode */
0199     write_hga_b(0x0d, 0x09);    /* maximum scanline */
0200     write_hga_b(0x0c, 0x0a);    /* cursor start */
0201     write_hga_b(0x0d, 0x0b);    /* cursor end */
0202 
0203     write_hga_w(0x0000, 0x0c);  /* start address */
0204     write_hga_w(0x0000, 0x0e);  /* cursor location */
0205 
0206     hga_mode = HGA_TXT;
0207     spin_unlock_irqrestore(&hga_reg_lock, flags);
0208 }
0209 
0210 static void hga_gfx_mode(void)
0211 {
0212     unsigned long flags;
0213 
0214     spin_lock_irqsave(&hga_reg_lock, flags);
0215     outb_p(0x00, HGA_STATUS_PORT);
0216     outb_p(HGA_GFX_MODE_EN, HGA_GFX_PORT);
0217     outb_p(HGA_MODE_VIDEO_EN | HGA_MODE_GRAPHICS, HGA_MODE_PORT);
0218 
0219     write_hga_b(0x35, 0x00);    /* horizontal total */
0220     write_hga_b(0x2d, 0x01);    /* horizontal displayed */
0221     write_hga_b(0x2e, 0x02);    /* horizontal sync pos */
0222     write_hga_b(0x07, 0x03);    /* horizontal sync width */
0223 
0224     write_hga_b(0x5b, 0x04);    /* vertical total */
0225     write_hga_b(0x02, 0x05);    /* vertical total adjust */
0226     write_hga_b(0x57, 0x06);    /* vertical displayed */
0227     write_hga_b(0x57, 0x07);    /* vertical sync pos */
0228 
0229     write_hga_b(0x02, 0x08);    /* interlace mode */
0230     write_hga_b(0x03, 0x09);    /* maximum scanline */
0231     write_hga_b(0x00, 0x0a);    /* cursor start */
0232     write_hga_b(0x00, 0x0b);    /* cursor end */
0233 
0234     write_hga_w(0x0000, 0x0c);  /* start address */
0235     write_hga_w(0x0000, 0x0e);  /* cursor location */
0236 
0237     hga_mode = HGA_GFX;
0238     spin_unlock_irqrestore(&hga_reg_lock, flags);
0239 }
0240 
0241 static void hga_show_logo(struct fb_info *info)
0242 {
0243 /*
0244     void __iomem *dest = hga_vram;
0245     char *logo = linux_logo_bw;
0246     int x, y;
0247     
0248     for (y = 134; y < 134 + 80 ; y++) * this needs some cleanup *
0249         for (x = 0; x < 10 ; x++)
0250             writeb(~*(logo++),(dest + HGA_ROWADDR(y) + x + 40));
0251 */
0252 }
0253 
0254 static void hga_pan(unsigned int xoffset, unsigned int yoffset)
0255 {
0256     unsigned int base;
0257     unsigned long flags;
0258     
0259     base = (yoffset / 8) * 90 + xoffset;
0260     spin_lock_irqsave(&hga_reg_lock, flags);
0261     write_hga_w(base, 0x0c);    /* start address */
0262     spin_unlock_irqrestore(&hga_reg_lock, flags);
0263     DPRINTK("hga_pan: base:%d\n", base);
0264 }
0265 
0266 static void hga_blank(int blank_mode)
0267 {
0268     unsigned long flags;
0269 
0270     spin_lock_irqsave(&hga_reg_lock, flags);
0271     if (blank_mode) {
0272         outb_p(0x00, HGA_MODE_PORT);    /* disable video */
0273     } else {
0274         outb_p(HGA_MODE_VIDEO_EN | HGA_MODE_GRAPHICS, HGA_MODE_PORT);
0275     }
0276     spin_unlock_irqrestore(&hga_reg_lock, flags);
0277 }
0278 
0279 static int hga_card_detect(void)
0280 {
0281     int count = 0;
0282     void __iomem *p, *q;
0283     unsigned short p_save, q_save;
0284 
0285     hga_vram_len  = 0x08000;
0286 
0287     hga_vram = ioremap(0xb0000, hga_vram_len);
0288     if (!hga_vram)
0289         return -ENOMEM;
0290 
0291     if (request_region(0x3b0, 12, "hgafb"))
0292         release_io_ports = 1;
0293     if (request_region(0x3bf, 1, "hgafb"))
0294         release_io_port = 1;
0295 
0296     /* do a memory check */
0297 
0298     p = hga_vram;
0299     q = hga_vram + 0x01000;
0300 
0301     p_save = readw(p); q_save = readw(q);
0302 
0303     writew(0xaa55, p); if (readw(p) == 0xaa55) count++;
0304     writew(0x55aa, p); if (readw(p) == 0x55aa) count++;
0305     writew(p_save, p);
0306 
0307     if (count != 2)
0308         goto error;
0309 
0310     /* Ok, there is definitely a card registering at the correct
0311      * memory location, so now we do an I/O port test.
0312      */
0313     
0314     if (!test_hga_b(0x66, 0x0f))        /* cursor low register */
0315         goto error;
0316 
0317     if (!test_hga_b(0x99, 0x0f))     /* cursor low register */
0318         goto error;
0319 
0320     /* See if the card is a Hercules, by checking whether the vsync
0321      * bit of the status register is changing.  This test lasts for
0322      * approximately 1/10th of a second.
0323      */
0324     
0325     p_save = q_save = inb_p(HGA_STATUS_PORT) & HGA_STATUS_VSYNC;
0326 
0327     for (count=0; count < 50000 && p_save == q_save; count++) {
0328         q_save = inb(HGA_STATUS_PORT) & HGA_STATUS_VSYNC;
0329         udelay(2);
0330     }
0331 
0332     if (p_save == q_save) 
0333         goto error;
0334 
0335     switch (inb_p(HGA_STATUS_PORT) & 0x70) {
0336         case 0x10:
0337             hga_type = TYPE_HERCPLUS;
0338             hga_type_name = "HerculesPlus";
0339             break;
0340         case 0x50:
0341             hga_type = TYPE_HERCCOLOR;
0342             hga_type_name = "HerculesColor";
0343             break;
0344         default:
0345             hga_type = TYPE_HERC;
0346             hga_type_name = "Hercules";
0347             break;
0348     }
0349     return 0;
0350 error:
0351     if (release_io_ports)
0352         release_region(0x3b0, 12);
0353     if (release_io_port)
0354         release_region(0x3bf, 1);
0355 
0356     iounmap(hga_vram);
0357 
0358     pr_err("hgafb: HGA card not detected.\n");
0359 
0360     return -EINVAL;
0361 }
0362 
0363 /**
0364  *  hgafb_open - open the framebuffer device
0365  *  @info: pointer to fb_info object containing info for current hga board
0366  *  @init: open by console system or userland.
0367  */
0368 
0369 static int hgafb_open(struct fb_info *info, int init)
0370 {
0371     hga_gfx_mode();
0372     hga_clear_screen();
0373     if (!nologo) hga_show_logo(info);
0374     return 0;
0375 }
0376 
0377 /**
0378  *  hgafb_release - open the framebuffer device
0379  *  @info: pointer to fb_info object containing info for current hga board
0380  *  @init: open by console system or userland.
0381  */
0382 
0383 static int hgafb_release(struct fb_info *info, int init)
0384 {
0385     hga_txt_mode();
0386     hga_clear_screen();
0387     return 0;
0388 }
0389 
0390 /**
0391  *  hgafb_setcolreg - set color registers
0392  *  @regno:register index to set
0393  *  @red:red value, unused
0394  *  @green:green value, unused
0395  *  @blue:blue value, unused
0396  *  @transp:transparency value, unused
0397  *  @info:unused
0398  *
0399  *  This callback function is used to set the color registers of a HGA
0400  *  board. Since we have only two fixed colors only @regno is checked.
0401  *  A zero is returned on success and 1 for failure.
0402  */
0403 
0404 static int hgafb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
0405                u_int transp, struct fb_info *info)
0406 {
0407     if (regno > 1)
0408         return 1;
0409     return 0;
0410 }
0411 
0412 /**
0413  *  hga_pan_display - pan or wrap the display
0414  *  @var:contains new xoffset, yoffset and vmode values
0415  *  @info:pointer to fb_info object containing info for current hga board
0416  *
0417  *  This function looks only at xoffset, yoffset and the %FB_VMODE_YWRAP
0418  *  flag in @var. If input parameters are correct it calls hga_pan() to 
0419  *  program the hardware. @info->var is updated to the new values.
0420  *  A zero is returned on success and %-EINVAL for failure.
0421  */
0422 
0423 static int hgafb_pan_display(struct fb_var_screeninfo *var,
0424                  struct fb_info *info)
0425 {
0426     if (var->vmode & FB_VMODE_YWRAP) {
0427         if (var->yoffset >= info->var.yres_virtual ||
0428             var->xoffset)
0429             return -EINVAL;
0430     } else {
0431         if (var->xoffset + info->var.xres > info->var.xres_virtual
0432          || var->yoffset + info->var.yres > info->var.yres_virtual
0433          || var->yoffset % 8)
0434             return -EINVAL;
0435     }
0436 
0437     hga_pan(var->xoffset, var->yoffset);
0438     return 0;
0439 }
0440 
0441 /**
0442  *  hgafb_blank - (un)blank the screen
0443  *  @blank_mode:blanking method to use
0444  *  @info:unused
0445  *  
0446  *  Blank the screen if blank_mode != 0, else unblank. 
0447  *  Implements VESA suspend and powerdown modes on hardware that supports 
0448  *  disabling hsync/vsync:
0449  *      @blank_mode == 2 means suspend vsync,
0450  *      @blank_mode == 3 means suspend hsync,
0451  *      @blank_mode == 4 means powerdown.
0452  */
0453 
0454 static int hgafb_blank(int blank_mode, struct fb_info *info)
0455 {
0456     hga_blank(blank_mode);
0457     return 0;
0458 }
0459 
0460 /*
0461  * Accel functions
0462  */
0463 static void hgafb_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
0464 {
0465     u_int rows, y;
0466     u8 __iomem *dest;
0467 
0468     y = rect->dy;
0469 
0470     for (rows = rect->height; rows--; y++) {
0471         dest = rowaddr(info, y) + (rect->dx >> 3);
0472         switch (rect->rop) {
0473         case ROP_COPY:
0474             memset_io(dest, rect->color, (rect->width >> 3));
0475             break;
0476         case ROP_XOR:
0477             fb_writeb(~(fb_readb(dest)), dest);
0478             break;
0479         }
0480     }
0481 }
0482 
0483 static void hgafb_copyarea(struct fb_info *info, const struct fb_copyarea *area)
0484 {
0485     u_int rows, y1, y2;
0486     u8 __iomem *src;
0487     u8 __iomem *dest;
0488 
0489     if (area->dy <= area->sy) {
0490         y1 = area->sy;
0491         y2 = area->dy;
0492 
0493         for (rows = area->height; rows--; ) {
0494             src = rowaddr(info, y1) + (area->sx >> 3);
0495             dest = rowaddr(info, y2) + (area->dx >> 3);
0496             memmove(dest, src, (area->width >> 3));
0497             y1++;
0498             y2++;
0499         }
0500     } else {
0501         y1 = area->sy + area->height - 1;
0502         y2 = area->dy + area->height - 1;
0503 
0504         for (rows = area->height; rows--;) {
0505             src = rowaddr(info, y1) + (area->sx >> 3);
0506             dest = rowaddr(info, y2) + (area->dx >> 3);
0507             memmove(dest, src, (area->width >> 3));
0508             y1--;
0509             y2--;
0510         }
0511     }
0512 }
0513 
0514 static void hgafb_imageblit(struct fb_info *info, const struct fb_image *image)
0515 {
0516     u8 __iomem *dest;
0517     u8 *cdat = (u8 *) image->data;
0518     u_int rows, y = image->dy;
0519     u_int x;
0520     u8 d;
0521 
0522     for (rows = image->height; rows--; y++) {
0523         for (x = 0; x < image->width; x+= 8) {
0524             d = *cdat++;
0525             dest = rowaddr(info, y) + ((image->dx + x)>> 3);
0526             fb_writeb(d, dest);
0527         }
0528     }
0529 }
0530 
0531 static const struct fb_ops hgafb_ops = {
0532     .owner      = THIS_MODULE,
0533     .fb_open    = hgafb_open,
0534     .fb_release = hgafb_release,
0535     .fb_setcolreg   = hgafb_setcolreg,
0536     .fb_pan_display = hgafb_pan_display,
0537     .fb_blank   = hgafb_blank,
0538     .fb_fillrect    = hgafb_fillrect,
0539     .fb_copyarea    = hgafb_copyarea,
0540     .fb_imageblit   = hgafb_imageblit,
0541 };
0542         
0543 /* ------------------------------------------------------------------------- *
0544  *
0545  * Functions in fb_info
0546  * 
0547  * ------------------------------------------------------------------------- */
0548 
0549 /* ------------------------------------------------------------------------- */
0550     
0551     /*
0552      *  Initialization
0553      */
0554 
0555 static int hgafb_probe(struct platform_device *pdev)
0556 {
0557     struct fb_info *info;
0558     int ret;
0559 
0560     ret = hga_card_detect();
0561     if (ret)
0562         return ret;
0563 
0564     printk(KERN_INFO "hgafb: %s with %ldK of memory detected.\n",
0565         hga_type_name, hga_vram_len/1024);
0566 
0567     info = framebuffer_alloc(0, &pdev->dev);
0568     if (!info) {
0569         iounmap(hga_vram);
0570         return -ENOMEM;
0571     }
0572 
0573     hga_fix.smem_start = (unsigned long)hga_vram;
0574     hga_fix.smem_len = hga_vram_len;
0575 
0576     info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN;
0577     info->var = hga_default_var;
0578     info->fix = hga_fix;
0579     info->monspecs.hfmin = 0;
0580     info->monspecs.hfmax = 0;
0581     info->monspecs.vfmin = 10000;
0582     info->monspecs.vfmax = 10000;
0583     info->monspecs.dpms = 0;
0584     info->fbops = &hgafb_ops;
0585     info->screen_base = hga_vram;
0586 
0587         if (register_framebuffer(info) < 0) {
0588         framebuffer_release(info);
0589         iounmap(hga_vram);
0590         return -EINVAL;
0591     }
0592 
0593     fb_info(info, "%s frame buffer device\n", info->fix.id);
0594     platform_set_drvdata(pdev, info);
0595     return 0;
0596 }
0597 
0598 static int hgafb_remove(struct platform_device *pdev)
0599 {
0600     struct fb_info *info = platform_get_drvdata(pdev);
0601 
0602     hga_txt_mode();
0603     hga_clear_screen();
0604 
0605     if (info) {
0606         unregister_framebuffer(info);
0607         framebuffer_release(info);
0608     }
0609 
0610     iounmap(hga_vram);
0611 
0612     if (release_io_ports)
0613         release_region(0x3b0, 12);
0614 
0615     if (release_io_port)
0616         release_region(0x3bf, 1);
0617 
0618     return 0;
0619 }
0620 
0621 static struct platform_driver hgafb_driver = {
0622     .probe = hgafb_probe,
0623     .remove = hgafb_remove,
0624     .driver = {
0625         .name = "hgafb",
0626     },
0627 };
0628 
0629 static struct platform_device *hgafb_device;
0630 
0631 static int __init hgafb_init(void)
0632 {
0633     int ret;
0634 
0635     if (fb_get_options("hgafb", NULL))
0636         return -ENODEV;
0637 
0638     ret = platform_driver_register(&hgafb_driver);
0639 
0640     if (!ret) {
0641         hgafb_device = platform_device_register_simple("hgafb", 0, NULL, 0);
0642 
0643         if (IS_ERR(hgafb_device)) {
0644             platform_driver_unregister(&hgafb_driver);
0645             ret = PTR_ERR(hgafb_device);
0646         }
0647     }
0648 
0649     return ret;
0650 }
0651 
0652 static void __exit hgafb_exit(void)
0653 {
0654     platform_device_unregister(hgafb_device);
0655     platform_driver_unregister(&hgafb_driver);
0656 }
0657 
0658 /* -------------------------------------------------------------------------
0659  *
0660  *  Modularization
0661  *
0662  * ------------------------------------------------------------------------- */
0663 
0664 MODULE_AUTHOR("Ferenc Bakonyi (fero@drama.obuda.kando.hu)");
0665 MODULE_DESCRIPTION("FBDev driver for Hercules Graphics Adaptor");
0666 MODULE_LICENSE("GPL");
0667 
0668 module_param(nologo, bool, 0);
0669 MODULE_PARM_DESC(nologo, "Disables startup logo if != 0 (default=0)");
0670 module_init(hgafb_init);
0671 module_exit(hgafb_exit);
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