1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
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
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/kernel.h>
34 #include <sys/module.h>
35 #include <sys/consio.h>
36 #include <sys/fbio.h>
37
38 #include <dev/fb/fbreg.h>
39 #include <dev/fb/splashreg.h>
40 #include <dev/syscons/syscons.h>
41
42 static u_char palette[256*3];
43
44 static int
fade_saver(video_adapter_t * adp,int blank)45 fade_saver(video_adapter_t *adp, int blank)
46 {
47 static int count = 0;
48 u_char pal[256*3];
49 int i;
50
51 if (blank) {
52 if (ISPALAVAIL(adp->va_flags)) {
53 if (count <= 0)
54 vidd_save_palette(adp, palette);
55 if (count < 256) {
56 pal[0] = pal[1] = pal[2] = 0;
57 for (i = 3; i < 256*3; i++) {
58 if (palette[i] - count > 60)
59 pal[i] = palette[i] - count;
60 else
61 pal[i] = 60;
62 }
63 vidd_load_palette(adp, pal);
64 count++;
65 }
66 } else {
67 vidd_blank_display(adp, V_DISPLAY_BLANK);
68 }
69 } else {
70 if (ISPALAVAIL(adp->va_flags)) {
71 vidd_load_palette(adp, palette);
72 count = 0;
73 } else {
74 vidd_blank_display(adp, V_DISPLAY_ON);
75 }
76 }
77 return 0;
78 }
79
80 static int
fade_init(video_adapter_t * adp)81 fade_init(video_adapter_t *adp)
82 {
83 if (!ISPALAVAIL(adp->va_flags) &&
84 vidd_blank_display(adp, V_DISPLAY_ON) != 0)
85 return ENODEV;
86 return 0;
87 }
88
89 static int
fade_term(video_adapter_t * adp)90 fade_term(video_adapter_t *adp)
91 {
92 return 0;
93 }
94
95 static scrn_saver_t fade_module = {
96 "fade_saver", fade_init, fade_term, fade_saver, NULL,
97 };
98
99 SAVER_MODULE(fade_saver, fade_module);
100