File: /usr/src/linux/drivers/video/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
16 #include <linux/config.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 <video/font.h>
23
24 #define NO_FONTS
25
26 static struct fbcon_font_desc *fbcon_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 #if defined(CONFIG_FBCON_MAC) || defined(CONFIG_FB_SBUS)
37 #undef NO_FONTS
38 #endif
39 &font_vga_6x11,
40 #endif
41 #ifdef CONFIG_FONT_SUN8x16
42 #undef NO_FONTS
43 &font_sun_8x16,
44 #endif
45 #ifdef CONFIG_FONT_SUN12x22
46 #if defined(CONFIG_FB_SBUS) || defined(CONFIG_FBCON_CFB8) || defined(CONFIG_FBCON_CFB16) || defined(CONFIG_FBCON_CFB24) || defined(CONFIG_FBCON_CFB32)
47 #undef NO_FONTS
48 #endif
49 &font_sun_12x22,
50 #endif
51 #ifdef CONFIG_FONT_ACORN_8x8
52 #undef NO_FONTS
53 &font_acorn_8x8,
54 #endif
55 #ifdef CONFIG_FONT_PEARL_8x8
56 #undef NO_FONTS
57 &font_pearl_8x8,
58 #endif
59 };
60
61 #define num_fonts (sizeof(fbcon_fonts)/sizeof(*fbcon_fonts))
62
63 #ifdef NO_FONTS
64 #error No fonts configured.
65 #endif
66
67
68 /**
69 * fbcon_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 fbcon_font_desc *fbcon_find_font(char *name)
80 {
81 unsigned int i;
82
83 for (i = 0; i < num_fonts; i++)
84 if (!strcmp(fbcon_fonts[i]->name, name))
85 return fbcon_fonts[i];
86 return NULL;
87 }
88
89
90 /**
91 * fbcon_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 fbcon_font_desc *fbcon_get_default_font(int xres, int yres)
104 {
105 int i, c, cc;
106 struct fbcon_font_desc *f, *g;
107
108 g = NULL;
109 cc = -10000;
110 for(i=0; i<num_fonts; i++) {
111 f = fbcon_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