1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * linux/drivers/video/mfb.c -- Low level frame buffer operations for
3*4882a593Smuzhiyun * monochrome
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Created 5 Apr 1997 by Geert Uytterhoeven
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * This file is subject to the terms and conditions of the GNU General Public
8*4882a593Smuzhiyun * License. See the file COPYING in the main directory of this archive for
9*4882a593Smuzhiyun * more details.
10*4882a593Smuzhiyun */
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include <linux/string.h>
13*4882a593Smuzhiyun #include <linux/fb.h>
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun #include "atafb.h"
16*4882a593Smuzhiyun #include "atafb_utils.h"
17*4882a593Smuzhiyun
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun /*
20*4882a593Smuzhiyun * Monochrome
21*4882a593Smuzhiyun */
22*4882a593Smuzhiyun
atafb_mfb_copyarea(struct fb_info * info,u_long next_line,int sy,int sx,int dy,int dx,int height,int width)23*4882a593Smuzhiyun void atafb_mfb_copyarea(struct fb_info *info, u_long next_line,
24*4882a593Smuzhiyun int sy, int sx, int dy, int dx,
25*4882a593Smuzhiyun int height, int width)
26*4882a593Smuzhiyun {
27*4882a593Smuzhiyun u8 *src, *dest;
28*4882a593Smuzhiyun u_int rows;
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun if (sx == 0 && dx == 0 && width == next_line) {
31*4882a593Smuzhiyun src = (u8 *)info->screen_base + sy * (width >> 3);
32*4882a593Smuzhiyun dest = (u8 *)info->screen_base + dy * (width >> 3);
33*4882a593Smuzhiyun fb_memmove(dest, src, height * (width >> 3));
34*4882a593Smuzhiyun } else if (dy <= sy) {
35*4882a593Smuzhiyun src = (u8 *)info->screen_base + sy * next_line + (sx >> 3);
36*4882a593Smuzhiyun dest = (u8 *)info->screen_base + dy * next_line + (dx >> 3);
37*4882a593Smuzhiyun for (rows = height; rows--;) {
38*4882a593Smuzhiyun fb_memmove(dest, src, width >> 3);
39*4882a593Smuzhiyun src += next_line;
40*4882a593Smuzhiyun dest += next_line;
41*4882a593Smuzhiyun }
42*4882a593Smuzhiyun } else {
43*4882a593Smuzhiyun src = (u8 *)info->screen_base + (sy + height - 1) * next_line + (sx >> 3);
44*4882a593Smuzhiyun dest = (u8 *)info->screen_base + (dy + height - 1) * next_line + (dx >> 3);
45*4882a593Smuzhiyun for (rows = height; rows--;) {
46*4882a593Smuzhiyun fb_memmove(dest, src, width >> 3);
47*4882a593Smuzhiyun src -= next_line;
48*4882a593Smuzhiyun dest -= next_line;
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun }
51*4882a593Smuzhiyun }
52*4882a593Smuzhiyun
atafb_mfb_fillrect(struct fb_info * info,u_long next_line,u32 color,int sy,int sx,int height,int width)53*4882a593Smuzhiyun void atafb_mfb_fillrect(struct fb_info *info, u_long next_line, u32 color,
54*4882a593Smuzhiyun int sy, int sx, int height, int width)
55*4882a593Smuzhiyun {
56*4882a593Smuzhiyun u8 *dest;
57*4882a593Smuzhiyun u_int rows;
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun dest = (u8 *)info->screen_base + sy * next_line + (sx >> 3);
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun if (sx == 0 && width == next_line) {
62*4882a593Smuzhiyun if (color)
63*4882a593Smuzhiyun fb_memset255(dest, height * (width >> 3));
64*4882a593Smuzhiyun else
65*4882a593Smuzhiyun fb_memclear(dest, height * (width >> 3));
66*4882a593Smuzhiyun } else {
67*4882a593Smuzhiyun for (rows = height; rows--; dest += next_line) {
68*4882a593Smuzhiyun if (color)
69*4882a593Smuzhiyun fb_memset255(dest, width >> 3);
70*4882a593Smuzhiyun else
71*4882a593Smuzhiyun fb_memclear_small(dest, width >> 3);
72*4882a593Smuzhiyun }
73*4882a593Smuzhiyun }
74*4882a593Smuzhiyun }
75*4882a593Smuzhiyun
atafb_mfb_linefill(struct fb_info * info,u_long next_line,int dy,int dx,u32 width,const u8 * data,u32 bgcolor,u32 fgcolor)76*4882a593Smuzhiyun void atafb_mfb_linefill(struct fb_info *info, u_long next_line,
77*4882a593Smuzhiyun int dy, int dx, u32 width,
78*4882a593Smuzhiyun const u8 *data, u32 bgcolor, u32 fgcolor)
79*4882a593Smuzhiyun {
80*4882a593Smuzhiyun u8 *dest;
81*4882a593Smuzhiyun u_int rows;
82*4882a593Smuzhiyun
83*4882a593Smuzhiyun dest = (u8 *)info->screen_base + dy * next_line + (dx >> 3);
84*4882a593Smuzhiyun
85*4882a593Smuzhiyun for (rows = width / 8; rows--; /* check margins */ ) {
86*4882a593Smuzhiyun // use fast_memmove or fb_memmove
87*4882a593Smuzhiyun *dest++ = *data++;
88*4882a593Smuzhiyun }
89*4882a593Smuzhiyun }
90