1 /*-
2  * Copyright (c) 1995-1998 S�ren Schmidt
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer,
10  *    without modification, immediately at the beginning of the file.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. The name of the author may not be used to endorse or promote products
15  *    derived from this software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  *
28  * $FreeBSD: src/sys/modules/syscons/blank/blank_saver.c,v 1.17 1999/08/28 00:47:45 peter Exp $
29  * $DragonFly: src/sys/dev/misc/syscons/blank/blank_saver.c,v 1.5 2007/09/06 18:17:23 swildner Exp $
30  */
31 
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
36 #include <sys/consio.h>
37 #include <sys/fbio.h>
38 
39 #include <dev/video/fb/fbreg.h>
40 #include <dev/video/fb/splashreg.h>
41 #include "../syscons.h"
42 
43 static int blanked;
44 
45 static int
46 blank_saver(video_adapter_t *adp, int blank)
47 {
48 	if (blank == blanked)
49 		return 0;
50 
51 	(*vidsw[adp->va_index]->blank_display)
52 		(adp, blank ? V_DISPLAY_OFF : V_DISPLAY_ON);
53 
54 	blanked = blank;
55 
56 	return 0;
57 }
58 
59 static int
60 blank_init(video_adapter_t *adp)
61 {
62 	if ((*vidsw[adp->va_index]->blank_display)(adp, V_DISPLAY_ON) == 0)
63 		return 0;
64 	return ENODEV;
65 }
66 
67 static int
68 blank_term(video_adapter_t *adp)
69 {
70 	return 0;
71 }
72 
73 static scrn_saver_t blank_module = {
74 	"blank_saver", blank_init, blank_term, blank_saver, NULL,
75 };
76 
77 SAVER_MODULE(blank_saver, blank_module);
78