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/module.h>
 16#include <linux/types.h>
 17#include <linux/string.h>
 18#if defined(__mc68000__)
 19#include <asm/setup.h>
 20#endif
 21#include <linux/font.h>
 22
 23#define NO_FONTS
 24
 25static const struct font_desc *fonts[] = {
 26#ifdef CONFIG_FONT_8x8
 27#undef NO_FONTS
 28    &font_vga_8x8,
 29#endif
 30#ifdef CONFIG_FONT_8x16
 31#undef NO_FONTS
 32    &font_vga_8x16,
 33#endif
 34#ifdef CONFIG_FONT_6x11
 35#undef NO_FONTS
 36    &font_vga_6x11,
 37#endif
 38#ifdef CONFIG_FONT_7x14
 39#undef NO_FONTS
 40    &font_7x14,
 41#endif
 42#ifdef CONFIG_FONT_SUN8x16
 43#undef NO_FONTS
 44    &font_sun_8x16,
 45#endif
 46#ifdef CONFIG_FONT_SUN12x22
 47#undef NO_FONTS
 48    &font_sun_12x22,
 49#endif
 50#ifdef CONFIG_FONT_10x18
 51#undef NO_FONTS
 52    &font_10x18,
 53#endif
 54#ifdef CONFIG_FONT_ACORN_8x8
 55#undef NO_FONTS
 56    &font_acorn_8x8,
 57#endif
 58#ifdef CONFIG_FONT_PEARL_8x8
 59#undef NO_FONTS
 60    &font_pearl_8x8,
 61#endif
 62#ifdef CONFIG_FONT_MINI_4x6
 63#undef NO_FONTS
 64    &font_mini_4x6,
 65#endif
 66};
 67
 68#define num_fonts ARRAY_SIZE(fonts)
 69
 70#ifdef NO_FONTS
 71#error No fonts configured.
 72#endif
 73
 74
 75/**
 76 *	find_font - find a font
 77 *	@name: string name of a font
 78 *
 79 *	Find a specified font with string name @name.
 80 *
 81 *	Returns %NULL if no font found, or a pointer to the
 82 *	specified font.
 83 *
 84 */
 85
 86const struct font_desc *find_font(const char *name)
 87{
 88   unsigned int i;
 89
 90   for (i = 0; i < num_fonts; i++)
 91      if (!strcmp(fonts[i]->name, name))
 92	  return fonts[i];
 93   return NULL;
 94}
 95
 96
 97/**
 98 *	get_default_font - get default font
 99 *	@xres: screen size of X
100 *	@yres: screen size of Y
101 *      @font_w: bit array of supported widths (1 - 32)
102 *      @font_h: bit array of supported heights (1 - 32)
103 *
104 *	Get the default font for a specified screen size.
105 *	Dimensions are in pixels.
106 *
107 *	Returns %NULL if no font is found, or a pointer to the
108 *	chosen font.
109 *
110 */
111
112const struct font_desc *get_default_font(int xres, int yres, u32 font_w,
113					 u32 font_h)
114{
115    int i, c, cc;
116    const struct font_desc *f, *g;
117
118    g = NULL;
119    cc = -10000;
120    for(i=0; i<num_fonts; i++) {
121	f = fonts[i];
122	c = f->pref;
123#if defined(__mc68000__)
124#ifdef CONFIG_FONT_PEARL_8x8
125	if (MACH_IS_AMIGA && f->idx == PEARL8x8_IDX)
126	    c = 100;
127#endif
128#ifdef CONFIG_FONT_6x11
129	if (MACH_IS_MAC && xres < 640 && f->idx == VGA6x11_IDX)
130	    c = 100;
131#endif
132#endif
133	if ((yres < 400) == (f->height <= 8))
134	    c += 1000;
135
136	if ((font_w & (1 << (f->width - 1))) &&
137	    (font_h & (1 << (f->height - 1))))
138	    c += 1000;
139
140	if (c > cc) {
141	    cc = c;
142	    g = f;
143	}
144    }
145    return g;
146}
147
148EXPORT_SYMBOL(find_font);
149EXPORT_SYMBOL(get_default_font);
150
151MODULE_AUTHOR("James Simmons <jsimmons@users.sf.net>");
152MODULE_DESCRIPTION("Console Fonts");
153MODULE_LICENSE("GPL");