1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
/*-
* Copyright (c) 1995-1998 Søren Schmidt
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* without modification, immediately at the beginning of the file.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $Id: blank_saver.c,v 1.13 1998/09/17 19:40:29 sos Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <i386/isa/isa.h>
#include <saver.h>
static void
blank_saver(int blank)
{
u_char val;
if (blank) {
scrn_blanked = 1;
cur_console->status |= SAVER_RUNNING;
switch (crtc_type) {
case KD_VGA:
outb(TSIDX, 0x01); val = inb(TSREG);
outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
break;
case KD_EGA:
/* not yet done XXX */
break;
case KD_CGA:
outb(crtc_addr + 4, 0x25);
break;
case KD_MONO:
case KD_HERCULES:
outb(crtc_addr + 4, 0x21);
break;
default:
break;
}
}
else {
switch (crtc_type) {
case KD_VGA:
outb(TSIDX, 0x01); val = inb(TSREG);
outb(TSIDX, 0x01); outb(TSREG, val & 0xDF);
break;
case KD_EGA:
/* not yet done XXX */
break;
case KD_CGA:
outb(crtc_addr + 4, 0x2d);
break;
case KD_MONO:
case KD_HERCULES:
outb(crtc_addr + 4, 0x29);
break;
default:
break;
}
cur_console->status &= ~SAVER_RUNNING;
scrn_blanked = 0;
}
}
static int
blank_saver_load(void)
{
switch (crtc_type) {
case KD_MONO:
case KD_HERCULES:
case KD_CGA:
case KD_VGA:
break;
case KD_EGA:
/* EGA is yet to be supported */
default:
return ENODEV;
}
return add_scrn_saver(blank_saver);
}
static int
blank_saver_unload(void)
{
return remove_scrn_saver(blank_saver);
}
SAVER_MODULE(blank_saver);
|
