lib: Move fonts from drivers/video/console/ to lib/fonts/

Several drivers need font support independent of CONFIG_VT, cfr. commit
9cbce8d7e1dae0744ca4f68d62aa7de18196b6f4, "console/font: Refactor font
support code selection logic").
Hence move the fonts and their support logic from drivers/video/console/ to
its own library directory lib/fonts/.
This also allows to limit processing of drivers/video/console/Makefile to
CONFIG_VT=y again.

[Kevin Hilman <khilman@linaro.org>: Update arch/arm/boot/compressed/Makefile]
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

1 files changed, 153 insertions, 0 deletions

diff --git a/lib/fonts/fonts.c b/lib/fonts/fonts.c
new file mode 100644
index 000000000000..f947189efe6d
--- /dev/null
+++ b/lib/fonts/fonts.c
@@ -0,0 +1,153 @@
+/*
+ * `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>
+
+#define NO_FONTS
+
+static const struct font_desc *fonts[] = {
+#ifdef CONFIG_FONT_8x8
+#undef NO_FONTS
+    &font_vga_8x8,
+#endif
+#ifdef CONFIG_FONT_8x16
+#undef NO_FONTS
+    &font_vga_8x16,
+#endif
+#ifdef CONFIG_FONT_6x11
+#undef NO_FONTS
+    &font_vga_6x11,
+#endif
+#ifdef CONFIG_FONT_7x14
+#undef NO_FONTS
+    &font_7x14,
+#endif
+#ifdef CONFIG_FONT_SUN8x16
+#undef NO_FONTS
+    &font_sun_8x16,
+#endif
+#ifdef CONFIG_FONT_SUN12x22
+#undef NO_FONTS
+    &font_sun_12x22,
+#endif
+#ifdef CONFIG_FONT_10x18
+#undef NO_FONTS
+    &font_10x18,
+#endif
+#ifdef CONFIG_FONT_ACORN_8x8
+#undef NO_FONTS
+    &font_acorn_8x8,
+#endif
+#ifdef CONFIG_FONT_PEARL_8x8
+#undef NO_FONTS
+    &font_pearl_8x8,
+#endif
+#ifdef CONFIG_FONT_MINI_4x6
+#undef NO_FONTS
+    &font_mini_4x6,
+#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;
+
+   for (i = 0; i < num_fonts; i++)
+      if (!strcmp(fonts[i]->name, name))
+	  return fonts[i];
+   return NULL;
+}
+
+
+/**
+ *	get_default_font - get default font
+ *	@xres: screen size of X
+ *	@yres: screen size of Y
+ *      @font_w: bit array of supported widths (1 - 32)
+ *      @font_h: bit array of supported heights (1 - 32)
+ *
+ *	Get the default font for a specified screen size.
+ *	Dimensions are in pixels.
+ *
+ *	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, u32 font_w,
+					 u32 font_h)
+{
+    int i, c, cc;
+    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;
+
+	if ((font_w & (1 << (f->width - 1))) &&
+	    (font_h & (1 << (f->height - 1))))
+	    c += 1000;
+
+	if (c > cc) {
+	    cc = c;
+	    g = f;
+	}
+    }
+    return g;
+}
+
+EXPORT_SYMBOL(find_font);
+EXPORT_SYMBOL(get_default_font);
+
+MODULE_AUTHOR("James Simmons <jsimmons@users.sf.net>");
+MODULE_DESCRIPTION("Console Fonts");
+MODULE_LICENSE("GPL");