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/fade/fade_saver.c,v 1.18 1999/08/28 00:47:47 peter Exp $ 31 * $DragonFly: src/sys/dev/misc/syscons/fade/fade_saver.c,v 1.4 2007/08/15 19:31:11 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 u_char palette[256*3]; 47 static int blanked; 48 49 static int 50 fade_saver(video_adapter_t *adp, int blank) 51 { 52 static int count = 0; 53 u_char pal[256*3]; 54 int i; 55 56 57 if (blank) { 58 blanked = TRUE; 59 if (ISPALAVAIL(adp->va_flags)) { 60 if (count <= 0) 61 save_palette(adp, palette); 62 if (count < 256) { 63 pal[0] = pal[1] = pal[2] = 0; 64 for (i = 3; i < 256*3; i++) { 65 if (palette[i] - count > 60) 66 pal[i] = palette[i] - count; 67 else 68 pal[i] = 60; 69 } 70 load_palette(adp, pal); 71 count++; 72 } 73 } else { 74 (*vidsw[adp->va_index]->blank_display)(adp, 75 V_DISPLAY_BLANK); 76 } 77 } else { 78 if (ISPALAVAIL(adp->va_flags)) { 79 load_palette(adp, palette); 80 count = 0; 81 } else { 82 (*vidsw[adp->va_index]->blank_display)(adp, 83 V_DISPLAY_ON); 84 } 85 blanked = FALSE; 86 } 87 return 0; 88 } 89 90 static int 91 fade_init(video_adapter_t *adp) 92 { 93 if (!ISPALAVAIL(adp->va_flags) 94 && (*vidsw[adp->va_index]->blank_display)(adp, V_DISPLAY_ON) != 0) { 95 return ENODEV; 96 } 97 blanked = FALSE; 98 return 0; 99 } 100 101 static int 102 fade_term(video_adapter_t *adp) 103 { 104 return 0; 105 } 106 107 static scrn_saver_t fade_module = { 108 "fade_saver", fade_init, fade_term, fade_saver, NULL, 109 }; 110 111 SAVER_MODULE(fade_saver, fade_module); 112