1 /*-
2  * (MPSAFE)
3  *
4  * Copyright (c) 1995-1998 Søren Schmidt
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer,
12  *    without modification, immediately at the beginning of the file.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. The name of the author may not be used to endorse or promote products
17  *    derived from this software without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  *
30  * $FreeBSD: src/sys/modules/syscons/blank/blank_saver.c,v 1.17 1999/08/28 00:47:45 peter Exp $
31  * $DragonFly: src/sys/dev/misc/syscons/blank/blank_saver.c,v 1.5 2007/09/06 18:17:23 swildner Exp $
32  */
33 
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
37 #include <sys/module.h>
38 #include <sys/consio.h>
39 #include <sys/fbio.h>
40 #include <sys/thread.h>
41 
42 #include <dev/video/fb/fbreg.h>
43 #include <dev/video/fb/splashreg.h>
44 #include "../syscons.h"
45 
46 static int blanked;
47 
48 static int
49 blank_saver(video_adapter_t *adp, int blank)
50 {
51 
52 	if (blank == blanked) {
53 		return 0;
54 	}
55 
56 	(*vidsw[adp->va_index]->blank_display)
57 		(adp, blank ? V_DISPLAY_BLANK : V_DISPLAY_ON);
58 
59 	blanked = blank;
60 
61 	return 0;
62 }
63 
64 static int
65 blank_init(video_adapter_t *adp)
66 {
67 
68 	if ((*vidsw[adp->va_index]->blank_display)(adp, V_DISPLAY_ON) == 0) {
69 		return 0;
70 	}
71 
72 	return ENODEV;
73 }
74 
75 static int
76 blank_term(video_adapter_t *adp)
77 {
78 	return 0;
79 }
80 
81 static scrn_saver_t blank_module = {
82 	"blank_saver", blank_init, blank_term, blank_saver, NULL,
83 };
84 
85 SAVER_MODULE(blank_saver, blank_module);
86