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/blank/blank_saver.c,v 1.17 1999/08/28 00:47:45 peter Exp $ 31 * $DragonFly: src/sys/dev/misc/syscons/blank/blank_saver.c,v 1.5 2007/09/06 18:17:23 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 int blanked; 47 48 static int 49 blank_saver(video_adapter_t *adp, int blank) 50 { 51 52 if (blank == blanked) { 53 return 0; 54 } 55 56 (*vidsw[adp->va_index]->blank_display) 57 (adp, blank ? V_DISPLAY_BLANK : V_DISPLAY_ON); 58 59 blanked = blank; 60 61 return 0; 62 } 63 64 static int 65 blank_init(video_adapter_t *adp) 66 { 67 68 if ((*vidsw[adp->va_index]->blank_display)(adp, V_DISPLAY_ON) == 0) { 69 return 0; 70 } 71 72 return ENODEV; 73 } 74 75 static int 76 blank_term(video_adapter_t *adp) 77 { 78 return 0; 79 } 80 81 static scrn_saver_t blank_module = { 82 "blank_saver", blank_init, blank_term, blank_saver, NULL, 83 }; 84 85 SAVER_MODULE(blank_saver, blank_module); 86