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