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");