sys/dev/misc/syscons/blank/blank_saver.c

   1 /*-
   2  * Copyright (c) 1995-1998 Søren 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/blank/blank_saver.c,v 1.17 1999/08/28 00:47:45 peter Exp $
  29  * $DragonFly: src/sys/dev/misc/syscons/blank/blank_saver.c,v 1.5 2007/09/06 18:17:23 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 int blanked;
  44
  45 static int
  46 blank_saver(video_adapter_t *adp, int blank)
  47 {
  48         if (blank == blanked)
  49                 return 0;
  50
  51         (*vidsw[adp->va_index]->blank_display)
  52                 (adp, blank ? V_DISPLAY_OFF : V_DISPLAY_ON);
  53
  54         blanked = blank;
  55
  56         return 0;
  57 }
  58
  59 static int
  60 blank_init(video_adapter_t *adp)
  61 {
  62         if ((*vidsw[adp->va_index]->blank_display)(adp, V_DISPLAY_ON) == 0)
  63                 return 0;
  64         return ENODEV;
  65 }
  66
  67 static int
  68 blank_term(video_adapter_t *adp)
  69 {
  70         return 0;
  71 }
  72
  73 static scrn_saver_t blank_module = {
  74         "blank_saver", blank_init, blank_term, blank_saver, NULL,
  75 };
  76
  77 SAVER_MODULE(blank_saver, blank_module);