/* * 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);