projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| a1005012 MS |
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/module.h> | |
| 13 | #include <linux/string.h> | |
| 14 | #include <linux/fb.h> | |
| 15 | ||
| 16 | #include "atafb.h" | |
| 17 | #include "atafb_utils.h" | |
| 18 | ||
| 19 | ||
| 20 | /* | |
| 21 | * Monochrome | |
| 22 | */ | |
| 23 | ||
| 24 | void atafb_mfb_copyarea(struct fb_info *info, u_long next_line, | |
| 25 | int sy, int sx, int dy, int dx, | |
| 26 | int height, int width) | |
| 27 | { | |
| 28 | u8 *src, *dest; | |
| 29 | u_int rows; | |
| 30 | ||
| 31 | if (sx == 0 && dx == 0 && width == next_line) { | |
| 32 | src = (u8 *)info->screen_base + sy * (width >> 3); | |
| 33 | dest = (u8 *)info->screen_base + dy * (width >> 3); | |
| 34 | fb_memmove(dest, src, height * (width >> 3)); | |
| 35 | } else if (dy <= sy) { | |
| 36 | src = (u8 *)info->screen_base + sy * next_line + (sx >> 3); | |
| 37 | dest = (u8 *)info->screen_base + dy * next_line + (dx >> 3); | |
| 38 | for (rows = height; rows--;) { | |
| 39 | fb_memmove(dest, src, width >> 3); | |
| 40 | src += next_line; | |
| 41 | dest += next_line; | |
| 42 | } | |
| 43 | } else { | |
| 44 | src = (u8 *)info->screen_base + (sy + height - 1) * next_line + (sx >> 3); | |
| 45 | dest = (u8 *)info->screen_base + (dy + height - 1) * next_line + (dx >> 3); | |
| 46 | for (rows = height; rows--;) { | |
| 47 | fb_memmove(dest, src, width >> 3); | |
| 48 | src -= next_line; | |
| 49 | dest -= next_line; | |
| 50 | } | |
| 51 | } | |
| 52 | } | |
| 53 | ||
| 54 | void atafb_mfb_fillrect(struct fb_info *info, u_long next_line, u32 color, | |
| 55 | int sy, int sx, int height, int width) | |
| 56 | { | |
| 57 | u8 *dest; | |
| 58 | u_int rows; | |
| 59 | ||
| 60 | dest = (u8 *)info->screen_base + sy * next_line + (sx >> 3); | |
| 61 | ||
| 62 | if (sx == 0 && width == next_line) { | |
| 63 | if (color) | |
| 64 | fb_memset255(dest, height * (width >> 3)); | |
| 65 | else | |
| 66 | fb_memclear(dest, height * (width >> 3)); | |
| 67 | } else { | |
| 68 | for (rows = height; rows--; dest += next_line) { | |
| 69 | if (color) | |
| 70 | fb_memset255(dest, width >> 3); | |
| 71 | else | |
| 72 | fb_memclear_small(dest, width >> 3); | |
| 73 | } | |
| 74 | } | |
| 75 | } | |
| 76 | ||
| 77 | void atafb_mfb_linefill(struct fb_info *info, u_long next_line, | |
| 78 | int dy, int dx, u32 width, | |
| 79 | const u8 *data, u32 bgcolor, u32 fgcolor) | |
| 80 | { | |
| 81 | u8 *dest; | |
| 82 | u_int rows; | |
| 83 | ||
| 84 | dest = (u8 *)info->screen_base + dy * next_line + (dx >> 3); | |
| 85 | ||
| 86 | for (rows = width / 8; rows--; /* check margins */ ) { | |
| 87 | // use fast_memmove or fb_memmove | |
| 88 | *dest++ = *data++; | |
| 89 | } | |
| 90 | } | |
| 91 | ||
| 92 | #ifdef MODULE | |
| 93 | MODULE_LICENSE("GPL"); | |
| 94 | ||
| 95 | int init_module(void) | |
| 96 | { | |
| 97 | return 0; | |
| 98 | } | |
| 99 | ||
| 100 | void cleanup_module(void) | |
| 101 | { | |
| 102 | } | |
| 103 | #endif /* MODULE */ | |
| 104 | ||
| 105 | ||
| 106 | /* | |
| 107 | * Visible symbols for modules | |
| 108 | */ | |
| 109 | ||
| 110 | EXPORT_SYMBOL(atafb_mfb_copyarea); | |
| 111 | EXPORT_SYMBOL(atafb_mfb_fillrect); | |
| 112 | EXPORT_SYMBOL(atafb_mfb_linefill); |