cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

fonts.c (3078B)

      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#ifdef CONFIG_FONT_6x8
     61	&font_6x8,
     62#endif
     63};
     64
     65#define num_fonts ARRAY_SIZE(fonts)
     66
     67#ifdef NO_FONTS
     68#error No fonts configured.
     69#endif
     70
     71
     72/**
     73 *	find_font - find a font
     74 *	@name: string name of a font
     75 *
     76 *	Find a specified font with string name @name.
     77 *
     78 *	Returns %NULL if no font found, or a pointer to the
     79 *	specified font.
     80 *
     81 */
     82const struct font_desc *find_font(const char *name)
     83{
     84	unsigned int i;
     85
     86	BUILD_BUG_ON(!num_fonts);
     87	for (i = 0; i < num_fonts; i++)
     88		if (!strcmp(fonts[i]->name, name))
     89			return fonts[i];
     90	return NULL;
     91}
     92EXPORT_SYMBOL(find_font);
     93
     94
     95/**
     96 *	get_default_font - get default font
     97 *	@xres: screen size of X
     98 *	@yres: screen size of Y
     99 *      @font_w: bit array of supported widths (1 - 32)
    100 *      @font_h: bit array of supported heights (1 - 32)
    101 *
    102 *	Get the default font for a specified screen size.
    103 *	Dimensions are in pixels.
    104 *
    105 *	Returns %NULL if no font is found, or a pointer to the
    106 *	chosen font.
    107 *
    108 */
    109const struct font_desc *get_default_font(int xres, int yres, u32 font_w,
    110					 u32 font_h)
    111{
    112	int i, c, cc, res;
    113	const struct font_desc *f, *g;
    114
    115	g = NULL;
    116	cc = -10000;
    117	for (i = 0; i < num_fonts; i++) {
    118		f = fonts[i];
    119		c = f->pref;
    120#if defined(__mc68000__)
    121#ifdef CONFIG_FONT_PEARL_8x8
    122		if (MACH_IS_AMIGA && f->idx == PEARL8x8_IDX)
    123			c = 100;
    124#endif
    125#ifdef CONFIG_FONT_6x11
    126		if (MACH_IS_MAC && xres < 640 && f->idx == VGA6x11_IDX)
    127			c = 100;
    128#endif
    129#endif
    130		if ((yres < 400) == (f->height <= 8))
    131			c += 1000;
    132
    133		/* prefer a bigger font for high resolution */
    134		res = (xres / f->width) * (yres / f->height) / 1000;
    135		if (res > 20)
    136			c += 20 - res;
    137
    138		if ((font_w & (1 << (f->width - 1))) &&
    139		    (font_h & (1 << (f->height - 1))))
    140			c += 1000;
    141
    142		if (c > cc) {
    143			cc = c;
    144			g = f;
    145		}
    146	}
    147	return g;
    148}
    149EXPORT_SYMBOL(get_default_font);
    150
    151MODULE_AUTHOR("James Simmons <jsimmons@users.sf.net>");
    152MODULE_DESCRIPTION("Console Fonts");
    153MODULE_LICENSE("GPL");