drivers/video/console/fonts.c

   1 /*
   2  * linux/drivers/video/fonts.c -- `Soft' font definitions
   3  *
   4  *    Created 1995 by Geert Uytterhoeven
   5  *    Rewritten 1998 by Martin Mares <mj@ucw.cz>
   6  *
   7  *      2001 - Documented with DocBook
   8  *      - Brad Douglas <brad@neruo.com>
   9  *
  10  * This file is subject to the terms and conditions of the GNU General Public
  11  * License.  See the file COPYING in the main directory of this archive
  12  * for more details.
  13  */
  14
  15 #include <linux/config.h>
  16 #include <linux/module.h>
  17 #include <linux/types.h>
  18 #include <linux/string.h>
  19 #if defined(__mc68000__) || defined(CONFIG_APUS)
  20 #include <asm/setup.h>
  21 #endif
  22 #include <linux/font.h>
  23
  24 #define NO_FONTS
  25
  26 static struct font_desc *fonts[] = {
  27 #ifdef CONFIG_FONT_8x8
  28 #undef NO_FONTS
  29     &font_vga_8x8,
  30 #endif
  31 #ifdef CONFIG_FONT_8x16
  32 #undef NO_FONTS
  33     &font_vga_8x16,
  34 #endif
  35 #ifdef CONFIG_FONT_6x11
  36 #undef NO_FONTS
  37     &font_vga_6x11,
  38 #endif
  39 #ifdef CONFIG_FONT_SUN8x16
  40 #undef NO_FONTS
  41     &font_sun_8x16,
  42 #endif
  43 #ifdef CONFIG_FONT_SUN12x22
  44 #undef NO_FONTS
  45     &font_sun_12x22,
  46 #endif
  47 #ifdef CONFIG_FONT_ACORN_8x8
  48 #undef NO_FONTS
  49     &font_acorn_8x8,
  50 #endif
  51 #ifdef CONFIG_FONT_PEARL_8x8
  52 #undef NO_FONTS
  53     &font_pearl_8x8,
  54 #endif
  55 #ifdef CONFIG_FONT_MINI_4x6
  56 #undef NO_FONTS
  57     &font_mini_4x6,
  58 #endif
  59 };
  60
  61 #define num_fonts (sizeof(fonts)/sizeof(*fonts))
  62
  63 #ifdef NO_FONTS
  64 #error No fonts configured.
  65 #endif
  66
  67
  68 /**
  69  *      find_font - find a font
  70  *      @name: string name of a font
  71  *
  72  *      Find a specified font with string name @name.
  73  *
  74  *      Returns %NULL if no font found, or a pointer to the
  75  *      specified font.
  76  *
  77  */
  78
  79 struct font_desc *find_font(char *name)
  80 {
  81    unsigned int i;
  82
  83    for (i = 0; i < num_fonts; i++)
  84       if (!strcmp(fonts[i]->name, name))
  85           return fonts[i];
  86    return NULL;
  87 }
  88
  89
  90 /**
  91  *      get_default_font - get default font
  92  *      @xres: screen size of X
  93  *      @yres: screen size of Y
  94  *
  95  *      Get the default font for a specified screen size.
  96  *      Dimensions are in pixels.
  97  *
  98  *      Returns %NULL if no font is found, or a pointer to the
  99  *      chosen font.
 100  *
 101  */
 102
 103 struct font_desc *get_default_font(int xres, int yres)
 104 {
 105     int i, c, cc;
 106     struct font_desc *f, *g;
 107
 108     g = NULL;
 109     cc = -10000;
 110     for(i=0; i<num_fonts; i++) {
 111         f = fonts[i];
 112         c = f->pref;
 113 #if defined(__mc68000__) || defined(CONFIG_APUS)
 114 #ifdef CONFIG_FONT_PEARL_8x8
 115         if (MACH_IS_AMIGA && f->idx == PEARL8x8_IDX)
 116             c = 100;
 117 #endif
 118 #ifdef CONFIG_FONT_6x11
 119         if (MACH_IS_MAC && xres < 640 && f->idx == VGA6x11_IDX)
 120             c = 100;
 121 #endif
 122 #endif
 123         if ((yres < 400) == (f->height <= 8))
 124             c += 1000;
 125         if (c > cc) {
 126             cc = c;
 127             g = f;
 128         }
 129     }
 130     return g;
 131 }
 132
 133 EXPORT_SYMBOL(fonts);
 134 EXPORT_SYMBOL(find_font);
 135 EXPORT_SYMBOL(get_default_font);
 136
 137 MODULE_AUTHOR("James Simmons <jsimmons@users.sf.net>");
 138 MODULE_DESCRIPTION("Console Fonts");
 139 MODULE_LICENSE("GPL");