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 * $FreeBSD$ 31 */ 32 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/kernel.h> 36 #include <sys/module.h> 37 #include <sys/consio.h> 38 #include <sys/fbio.h> 39 40 #include <dev/fb/fbreg.h> 41 #include <dev/fb/splashreg.h> 42 #include <dev/syscons/syscons.h> 43 44 static u_char palette[256*3]; 45 46 static int 47 fade_saver(video_adapter_t *adp, int blank) 48 { 49 static int count = 0; 50 u_char pal[256*3]; 51 int i; 52 53 if (blank) { 54 if (ISPALAVAIL(adp->va_flags)) { 55 if (count <= 0) 56 vidd_save_palette(adp, palette); 57 if (count < 256) { 58 pal[0] = pal[1] = pal[2] = 0; 59 for (i = 3; i < 256*3; i++) { 60 if (palette[i] - count > 60) 61 pal[i] = palette[i] - count; 62 else 63 pal[i] = 60; 64 } 65 vidd_load_palette(adp, pal); 66 count++; 67 } 68 } else { 69 vidd_blank_display(adp, V_DISPLAY_BLANK); 70 } 71 } else { 72 if (ISPALAVAIL(adp->va_flags)) { 73 vidd_load_palette(adp, palette); 74 count = 0; 75 } else { 76 vidd_blank_display(adp, V_DISPLAY_ON); 77 } 78 } 79 return 0; 80 } 81 82 static int 83 fade_init(video_adapter_t *adp) 84 { 85 if (!ISPALAVAIL(adp->va_flags) && 86 vidd_blank_display(adp, V_DISPLAY_ON) != 0) 87 return ENODEV; 88 return 0; 89 } 90 91 static int 92 fade_term(video_adapter_t *adp) 93 { 94 return 0; 95 } 96 97 static scrn_saver_t fade_module = { 98 "fade_saver", fade_init, fade_term, fade_saver, NULL, 99 }; 100 101 SAVER_MODULE(fade_saver, fade_module); 102