tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * `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
23static const struct font_desc *fonts[] = {
24#ifdef CONFIG_FONT_8x8
25 &font_vga_8x8,
26#endif
27#ifdef CONFIG_FONT_8x16
28 &font_vga_8x16,
29#endif
30#ifdef CONFIG_FONT_6x11
31 &font_vga_6x11,
32#endif
33#ifdef CONFIG_FONT_7x14
34 &font_7x14,
35#endif
36#ifdef CONFIG_FONT_SUN8x16
37 &font_sun_8x16,
38#endif
39#ifdef CONFIG_FONT_SUN12x22
40 &font_sun_12x22,
41#endif
42#ifdef CONFIG_FONT_10x18
43 &font_10x18,
44#endif
45#ifdef CONFIG_FONT_ACORN_8x8
46 &font_acorn_8x8,
47#endif
48#ifdef CONFIG_FONT_PEARL_8x8
49 &font_pearl_8x8,
50#endif
51#ifdef CONFIG_FONT_MINI_4x6
52 &font_mini_4x6,
53#endif
54#ifdef CONFIG_FONT_6x10
55 &font_6x10,
56#endif
57#ifdef CONFIG_FONT_TER16x32
58 &font_ter_16x32,
59#endif
60};
61
62#define num_fonts ARRAY_SIZE(fonts)
63
64#ifdef NO_FONTS
65#error No fonts configured.
66#endif
67
68
69/**
70 * find_font - find a font
71 * @name: string name of a font
72 *
73 * Find a specified font with string name @name.
74 *
75 * Returns %NULL if no font found, or a pointer to the
76 * specified font.
77 *
78 */
79const struct font_desc *find_font(const char *name)
80{
81 unsigned int i;
82
83 BUILD_BUG_ON(!num_fonts);
84 for (i = 0; i < num_fonts; i++)
85 if (!strcmp(fonts[i]->name, name))
86 return fonts[i];
87 return NULL;
88}
89EXPORT_SYMBOL(find_font);
90
91
92/**
93 * get_default_font - get default font
94 * @xres: screen size of X
95 * @yres: screen size of Y
96 * @font_w: bit array of supported widths (1 - 32)
97 * @font_h: bit array of supported heights (1 - 32)
98 *
99 * Get the default font for a specified screen size.
100 * Dimensions are in pixels.
101 *
102 * Returns %NULL if no font is found, or a pointer to the
103 * chosen font.
104 *
105 */
106const struct font_desc *get_default_font(int xres, int yres, u32 font_w,
107 u32 font_h)
108{
109 int i, c, cc, res;
110 const struct font_desc *f, *g;
111
112 g = NULL;
113 cc = -10000;
114 for (i = 0; i < num_fonts; i++) {
115 f = fonts[i];
116 c = f->pref;
117#if defined(__mc68000__)
118#ifdef CONFIG_FONT_PEARL_8x8
119 if (MACH_IS_AMIGA && f->idx == PEARL8x8_IDX)
120 c = 100;
121#endif
122#ifdef CONFIG_FONT_6x11
123 if (MACH_IS_MAC && xres < 640 && f->idx == VGA6x11_IDX)
124 c = 100;
125#endif
126#endif
127 if ((yres < 400) == (f->height <= 8))
128 c += 1000;
129
130 /* prefer a bigger font for high resolution */
131 res = (xres / f->width) * (yres / f->height) / 1000;
132 if (res > 20)
133 c += 20 - res;
134
135 if ((font_w & (1 << (f->width - 1))) &&
136 (font_h & (1 << (f->height - 1))))
137 c += 1000;
138
139 if (c > cc) {
140 cc = c;
141 g = f;
142 }
143 }
144 return g;
145}
146EXPORT_SYMBOL(get_default_font);
147
148MODULE_AUTHOR("James Simmons <jsimmons@users.sf.net>");
149MODULE_DESCRIPTION("Console Fonts");
150MODULE_LICENSE("GPL");