2 * linux/drivers/video/mfb.c -- Low level frame buffer operations for
5 * Created 5 Apr 1997 by Geert Uytterhoeven
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
12 #include <linux/module.h>
13 #include <linux/string.h>
17 #include "atafb_utils.h"
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
)
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);
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);
54 void atafb_mfb_fillrect(struct fb_info
*info
, u_long next_line
, u32 color
,
55 int sy
, int sx
, int height
, int width
)
60 dest
= (u8
*)info
->screen_base
+ sy
* next_line
+ (sx
>> 3);
62 if (sx
== 0 && width
== next_line
) {
64 fb_memset255(dest
, height
* (width
>> 3));
66 fb_memclear(dest
, height
* (width
>> 3));
68 for (rows
= height
; rows
--; dest
+= next_line
) {
70 fb_memset255(dest
, width
>> 3);
72 fb_memclear_small(dest
, width
>> 3);
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
)
84 dest
= (u8
*)info
->screen_base
+ dy
* next_line
+ (dx
>> 3);
86 for (rows
= width
/ 8; rows
--; /* check margins */ ) {
87 // use fast_memmove or fb_memmove
93 MODULE_LICENSE("GPL");
100 void cleanup_module(void)
107 * Visible symbols for modules
110 EXPORT_SYMBOL(atafb_mfb_copyarea
);
111 EXPORT_SYMBOL(atafb_mfb_fillrect
);
112 EXPORT_SYMBOL(atafb_mfb_linefill
);
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