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/*
* 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/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++;
}
}
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