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 const 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_7x14
  40 #undef NO_FONTS
  41     &font_7x14,
  42 #endif
  43 #ifdef CONFIG_FONT_SUN8x16
  44 #undef NO_FONTS
  45     &font_sun_8x16,
  46 #endif
  47 #ifdef CONFIG_FONT_SUN12x22
  48 #undef NO_FONTS
  49     &font_sun_12x22,
  50 #endif
  51 #ifdef CONFIG_FONT_10x18
  52 #undef NO_FONTS
  53     &font_10x18,
  54 #endif
  55 #ifdef CONFIG_FONT_ACORN_8x8
  56 #undef NO_FONTS
  57     &font_acorn_8x8,
  58 #endif
  59 #ifdef CONFIG_FONT_PEARL_8x8
  60 #undef NO_FONTS
  61     &font_pearl_8x8,
  62 #endif
  63 #ifdef CONFIG_FONT_MINI_4x6
  64 #undef NO_FONTS
  65     &font_mini_4x6,
  66 #endif
  67 };
  68
  69 #define num_fonts (sizeof(fonts)/sizeof(*fonts))
  70
  71 #ifdef NO_FONTS
  72 #error No fonts configured.
  73 #endif
  74
  75
  76 /**
  77  *      find_font - find a font
  78  *      @name: string name of a font
  79  *
  80  *      Find a specified font with string name @name.
  81  *
  82  *      Returns %NULL if no font found, or a pointer to the
  83  *      specified font.
  84  *
  85  */
  86
  87 const struct font_desc *find_font(const char *name)
  88 {
  89    unsigned int i;
  90
  91    for (i = 0; i < num_fonts; i++)
  92       if (!strcmp(fonts[i]->name, name))
  93           return fonts[i];
  94    return NULL;
  95 }
  96
  97
  98 /**
  99  *      get_default_font - get default font
 100  *      @xres: screen size of X
 101  *      @yres: screen size of Y
 102  *
 103  *      Get the default font for a specified screen size.
 104  *      Dimensions are in pixels.
 105  *
 106  *      Returns %NULL if no font is found, or a pointer to the
 107  *      chosen font.
 108  *
 109  */
 110
 111 const struct font_desc *get_default_font(int xres, int yres)
 112 {
 113     int i, c, cc;
 114     const struct font_desc *f, *g;
 115
 116     g = NULL;
 117     cc = -10000;
 118     for(i=0; i<num_fonts; i++) {
 119         f = fonts[i];
 120         c = f->pref;
 121 #if defined(__mc68000__) || defined(CONFIG_APUS)
 122 #ifdef CONFIG_FONT_PEARL_8x8
 123         if (MACH_IS_AMIGA && f->idx == PEARL8x8_IDX)
 124             c = 100;
 125 #endif
 126 #ifdef CONFIG_FONT_6x11
 127         if (MACH_IS_MAC && xres < 640 && f->idx == VGA6x11_IDX)
 128             c = 100;
 129 #endif
 130 #endif
 131         if ((yres < 400) == (f->height <= 8))
 132             c += 1000;
 133         if (c > cc) {
 134             cc = c;
 135             g = f;
 136         }
 137     }
 138     return g;
 139 }
 140
 141 EXPORT_SYMBOL(find_font);
 142 EXPORT_SYMBOL(get_default_font);
 143
 144 MODULE_AUTHOR("James Simmons <jsimmons@users.sf.net>");
 145 MODULE_DESCRIPTION("Console Fonts");
 146 MODULE_LICENSE("GPL");