/*
 * `Soft' font definitions
 *
 *    Created 1995 by Geert Uytterhoeven
 *    Rewritten 1998 by Martin Mares <mj@ucw.cz>
 *
 *      2001 - Documented with DocBook
 *      - Brad Douglas <brad@neruo.com>
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file COPYING in the main directory of this archive
 * for more details.
 */

#include <linux/module.h>
#include <linux/types.h>
#include <linux/string.h>
#if defined(__mc68000__)
#include <asm/setup.h>
#endif
#include <linux/font.h>

static const struct font_desc *fonts[] = {
#ifdef CONFIG_FONT_8x8
        &font_vga_8x8,
#endif
#ifdef CONFIG_FONT_8x16
        &font_vga_8x16,
#endif
#ifdef CONFIG_FONT_6x11
        &font_vga_6x11,
#endif
#ifdef CONFIG_FONT_7x14
        &font_7x14,
#endif
#ifdef CONFIG_FONT_SUN8x16
        &font_sun_8x16,
#endif
#ifdef CONFIG_FONT_SUN12x22
        &font_sun_12x22,
#endif
#ifdef CONFIG_FONT_10x18
        &font_10x18,
#endif
#ifdef CONFIG_FONT_ACORN_8x8
        &font_acorn_8x8,
#endif
#ifdef CONFIG_FONT_PEARL_8x8
        &font_pearl_8x8,
#endif
#ifdef CONFIG_FONT_MINI_4x6
        &font_mini_4x6,
#endif
#ifdef CONFIG_FONT_6x10
        &font_6x10,
#endif
#ifdef CONFIG_FONT_TER10x18
        &font_ter_10x18,
#endif
#ifdef CONFIG_FONT_TER16x32
        &font_ter_16x32,
#endif
#ifdef CONFIG_FONT_6x8
        &font_6x8,
#endif
};

#define num_fonts ARRAY_SIZE(fonts)

#ifdef NO_FONTS
#error No fonts configured.
#endif


/**
 *      find_font - find a font
 *      @name: string name of a font
 *
 *      Find a specified font with string name @name.
 *
 *      Returns %NULL if no font found, or a pointer to the
 *      specified font.
 *
 */
const struct font_desc *find_font(const char *name)
{
        unsigned int i;

        BUILD_BUG_ON(!num_fonts);
        for (i = 0; i < num_fonts; i++)
                if (!strcmp(fonts[i]->name, name))
                        return fonts[i];
        return NULL;
}
EXPORT_SYMBOL(find_font);


/**
 *      get_default_font - get default font
 *      @xres: screen size of X
 *      @yres: screen size of Y
 *      @font_w: bit array of supported widths (1 - FB_MAX_BLIT_WIDTH)
 *      @font_h: bit array of supported heights (1 - FB_MAX_BLIT_HEIGHT)
 *
 *      Get the default font for a specified screen size.
 *      Dimensions are in pixels.
 *
 *      font_w or font_h being NULL means all values are supported.
 *
 *      Returns %NULL if no font is found, or a pointer to the
 *      chosen font.
 *
 */
const struct font_desc *get_default_font(int xres, int yres,
                                         unsigned long *font_w,
                                         unsigned long *font_h)
{
        int i, c, cc, res;
        const struct font_desc *f, *g;

        g = NULL;
        cc = -10000;
        for (i = 0; i < num_fonts; i++) {
                f = fonts[i];
                c = f->pref;
#if defined(__mc68000__)
#ifdef CONFIG_FONT_PEARL_8x8
                if (MACH_IS_AMIGA && f->idx == PEARL8x8_IDX)
                        c = 100;
#endif
#ifdef CONFIG_FONT_6x11
                if (MACH_IS_MAC && xres < 640 && f->idx == VGA6x11_IDX)
                        c = 100;
#endif
#endif
                if ((yres < 400) == (f->height <= 8))
                        c += 1000;

                /* prefer a bigger font for high resolution */
                res = (xres / f->width) * (yres / f->height) / 1000;
                if (res > 20)
                        c += 20 - res;

                if ((!font_w || test_bit(f->width - 1, font_w)) &&
                    (!font_h || test_bit(f->height - 1, font_h)))
                        c += 1000;

                if (c > cc) {
                        cc = c;
                        g = f;
                }
        }
        return g;
}
EXPORT_SYMBOL(get_default_font);

MODULE_AUTHOR("James Simmons <jsimmons@users.sf.net>");
MODULE_DESCRIPTION("Console Fonts");
MODULE_LICENSE("GPL");