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