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 */ 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 static int blanked; 44 45 static int 46 fade_saver(video_adapter_t *adp, int blank) 47 { 48 static int count = 0; 49 u_char pal[256*3]; 50 int i; 51 52 if (blank) { 53 blanked = TRUE; 54 if (ISPALAVAIL(adp->va_flags)) { 55 if (count <= 0) 56 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 load_palette(adp, pal); 66 count++; 67 } 68 } else { 69 (*vidsw[adp->va_index]->blank_display)(adp, 70 V_DISPLAY_BLANK); 71 } 72 } else { 73 if (ISPALAVAIL(adp->va_flags)) { 74 load_palette(adp, palette); 75 count = 0; 76 } else { 77 (*vidsw[adp->va_index]->blank_display)(adp, 78 V_DISPLAY_ON); 79 } 80 blanked = FALSE; 81 } 82 return 0; 83 } 84 85 static int 86 fade_init(video_adapter_t *adp) 87 { 88 if (!ISPALAVAIL(adp->va_flags) 89 && (*vidsw[adp->va_index]->blank_display)(adp, V_DISPLAY_ON) != 0) 90 return ENODEV; 91 blanked = FALSE; 92 return 0; 93 } 94 95 static int 96 fade_term(video_adapter_t *adp) 97 { 98 return 0; 99 } 100 101 static scrn_saver_t fade_module = { 102 "fade_saver", fade_init, fade_term, fade_saver, NULL, 103 }; 104 105 SAVER_MODULE(fade_saver, fade_module); 106