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author | Michael Schmitz <schmitz@opal.biophys.uni-duesseldorf.de> | 2007-05-01 22:32:39 +0200 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-05 02:59:05 +0200 |
commit | a100501212f2e26bb6d70bfb5c55eefd90e22b65 (patch) | |
tree | 64373f2a78d8920e11fe2a66152f280332b51363 /drivers/video/atafb_mfb.c | |
parent | m68k: Atari keyboard and mouse support. (diff) | |
download | linux-a100501212f2e26bb6d70bfb5c55eefd90e22b65.tar.xz linux-a100501212f2e26bb6d70bfb5c55eefd90e22b65.zip |
m68k: Atari fb revival
Update the atari fb to 2.6 by Michael Schmitz,
Reformatting and rewrite of bit plane functions by Roman Zippel,
A few more fixes by Geert Uytterhoeven.
Signed-off-by: Michael Schmitz <schmitz@debian.org>
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/video/atafb_mfb.c')
-rw-r--r-- | drivers/video/atafb_mfb.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/drivers/video/atafb_mfb.c b/drivers/video/atafb_mfb.c new file mode 100644 index 000000000000..6a352d62eecf --- /dev/null +++ b/drivers/video/atafb_mfb.c @@ -0,0 +1,112 @@ +/* + * linux/drivers/video/mfb.c -- Low level frame buffer operations for + * monochrome + * + * Created 5 Apr 1997 by Geert Uytterhoeven + * + * 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/string.h> +#include <linux/fb.h> + +#include "atafb.h" +#include "atafb_utils.h" + + + /* + * Monochrome + */ + +void atafb_mfb_copyarea(struct fb_info *info, u_long next_line, + int sy, int sx, int dy, int dx, + int height, int width) +{ + u8 *src, *dest; + u_int rows; + + if (sx == 0 && dx == 0 && width == next_line) { + src = (u8 *)info->screen_base + sy * (width >> 3); + dest = (u8 *)info->screen_base + dy * (width >> 3); + fb_memmove(dest, src, height * (width >> 3)); + } else if (dy <= sy) { + src = (u8 *)info->screen_base + sy * next_line + (sx >> 3); + dest = (u8 *)info->screen_base + dy * next_line + (dx >> 3); + for (rows = height; rows--;) { + fb_memmove(dest, src, width >> 3); + src += next_line; + dest += next_line; + } + } else { + src = (u8 *)info->screen_base + (sy + height - 1) * next_line + (sx >> 3); + dest = (u8 *)info->screen_base + (dy + height - 1) * next_line + (dx >> 3); + for (rows = height; rows--;) { + fb_memmove(dest, src, width >> 3); + src -= next_line; + dest -= next_line; + } + } +} + +void atafb_mfb_fillrect(struct fb_info *info, u_long next_line, u32 color, + int sy, int sx, int height, int width) +{ + u8 *dest; + u_int rows; + + dest = (u8 *)info->screen_base + sy * next_line + (sx >> 3); + + if (sx == 0 && width == next_line) { + if (color) + fb_memset255(dest, height * (width >> 3)); + else + fb_memclear(dest, height * (width >> 3)); + } else { + for (rows = height; rows--; dest += next_line) { + if (color) + fb_memset255(dest, width >> 3); + else + fb_memclear_small(dest, width >> 3); + } + } +} + +void atafb_mfb_linefill(struct fb_info *info, u_long next_line, + int dy, int dx, u32 width, + const u8 *data, u32 bgcolor, u32 fgcolor) +{ + u8 *dest; + u_int rows; + + dest = (u8 *)info->screen_base + dy * next_line + (dx >> 3); + + for (rows = width / 8; rows--; /* check margins */ ) { + // use fast_memmove or fb_memmove + *dest++ = *data++; + } +} + +#ifdef MODULE +MODULE_LICENSE("GPL"); + +int init_module(void) +{ + return 0; +} + +void cleanup_module(void) +{ +} +#endif /* MODULE */ + + + /* + * Visible symbols for modules + */ + +EXPORT_SYMBOL(atafb_mfb_copyarea); +EXPORT_SYMBOL(atafb_mfb_fillrect); +EXPORT_SYMBOL(atafb_mfb_linefill); |