2 * linux/drivers/video/mfb.c -- Low level frame buffer operations for
5 * Created 5 Apr 1997 by Geert Uytterhoeven
7 * This file is subject to the terms and conditions of the GNU General Public
8 * License. See the file COPYING in the main directory of this archive for
12 #include <linux/module.h>
13 #include <linux/string.h>
17 #include "atafb_utils.h"
24 void atafb_mfb_copyarea(struct fb_info *info, u_long next_line,
25 int sy, int sx, int dy, int dx,
26 int height, int width)
31 if (sx == 0 && dx == 0 && width == next_line) {
32 src = (u8 *)info->screen_base + sy * (width >> 3);
33 dest = (u8 *)info->screen_base + dy * (width >> 3);
34 fb_memmove(dest, src, height * (width >> 3));
35 } else if (dy <= sy) {
36 src = (u8 *)info->screen_base + sy * next_line + (sx >> 3);
37 dest = (u8 *)info->screen_base + dy * next_line + (dx >> 3);
38 for (rows = height; rows--;) {
39 fb_memmove(dest, src, width >> 3);
44 src = (u8 *)info->screen_base + (sy + height - 1) * next_line + (sx >> 3);
45 dest = (u8 *)info->screen_base + (dy + height - 1) * next_line + (dx >> 3);
46 for (rows = height; rows--;) {
47 fb_memmove(dest, src, width >> 3);
54 void atafb_mfb_fillrect(struct fb_info *info, u_long next_line, u32 color,
55 int sy, int sx, int height, int width)
60 dest = (u8 *)info->screen_base + sy * next_line + (sx >> 3);
62 if (sx == 0 && width == next_line) {
64 fb_memset255(dest, height * (width >> 3));
66 fb_memclear(dest, height * (width >> 3));
68 for (rows = height; rows--; dest += next_line) {
70 fb_memset255(dest, width >> 3);
72 fb_memclear_small(dest, width >> 3);
77 void atafb_mfb_linefill(struct fb_info *info, u_long next_line,
78 int dy, int dx, u32 width,
79 const u8 *data, u32 bgcolor, u32 fgcolor)
84 dest = (u8 *)info->screen_base + dy * next_line + (dx >> 3);
86 for (rows = width / 8; rows--; /* check margins */ ) {
87 // use fast_memmove or fb_memmove
93 MODULE_LICENSE("GPL");
100 void cleanup_module(void)
107 * Visible symbols for modules
110 EXPORT_SYMBOL(atafb_mfb_copyarea);
111 EXPORT_SYMBOL(atafb_mfb_fillrect);
112 EXPORT_SYMBOL(atafb_mfb_linefill);