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/fade/fade_saver.c,v 1.18 1999/08/28 00:47:47 peter Exp $ 29 * $DragonFly: src/sys/dev/misc/syscons/fade/fade_saver.c,v 1.4 2007/08/15 19:31:11 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 u_char palette[256*3]; 44 static int blanked; 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 blanked = TRUE; 55 if (ISPALAVAIL(adp->va_flags)) { 56 if (count <= 0) 57 save_palette(adp, palette); 58 if (count < 256) { 59 pal[0] = pal[1] = pal[2] = 0; 60 for (i = 3; i < 256*3; i++) { 61 if (palette[i] - count > 60) 62 pal[i] = palette[i] - count; 63 else 64 pal[i] = 60; 65 } 66 load_palette(adp, pal); 67 count++; 68 } 69 } else { 70 (*vidsw[adp->va_index]->blank_display)(adp, 71 V_DISPLAY_OFF); 72 } 73 } else { 74 if (ISPALAVAIL(adp->va_flags)) { 75 load_palette(adp, palette); 76 count = 0; 77 } else { 78 (*vidsw[adp->va_index]->blank_display)(adp, 79 V_DISPLAY_ON); 80 } 81 blanked = FALSE; 82 } 83 return 0; 84 } 85 86 static int 87 fade_init(video_adapter_t *adp) 88 { 89 if (!ISPALAVAIL(adp->va_flags) 90 && (*vidsw[adp->va_index]->blank_display)(adp, V_DISPLAY_ON) != 0) 91 return ENODEV; 92 blanked = FALSE; 93 return 0; 94 } 95 96 static int 97 fade_term(video_adapter_t *adp) 98 { 99 return 0; 100 } 101 102 static scrn_saver_t fade_module = { 103 "fade_saver", fade_init, fade_term, fade_saver, NULL, 104 }; 105 106 SAVER_MODULE(fade_saver, fade_module); 107