FreeBSD/Linux Kernel Cross Reference
sys/dev/syscons/blank/blank_saver.c

     /*-
      * SPDX-License-Identifier: BSD-3-Clause
      *
      * Copyright (c) 1995-1998 Søren Schmidt
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer,
     *    without modification, immediately at the beginning of the file.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * $FreeBSD$
     */
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/kernel.h>
    #include <sys/module.h>
    #include <sys/consio.h>
    #include <sys/fbio.h>
    
    #include <dev/fb/fbreg.h>
    #include <dev/fb/splashreg.h>
    #include <dev/syscons/syscons.h>
    
    static int
    blank_saver(video_adapter_t *adp, int blank)
    {
            vidd_blank_display(adp, (blank) ? V_DISPLAY_BLANK : V_DISPLAY_ON);
            return 0;
    }
    
    static int
    blank_init(video_adapter_t *adp)
    {
            if (vidd_blank_display(adp, V_DISPLAY_ON) == 0)
                    return 0;
            return ENODEV;
    }
    
    static int
    blank_term(video_adapter_t *adp)
    {
            return 0;
    }
    
    static scrn_saver_t blank_module = {
            "blank_saver", blank_init, blank_term, blank_saver, NULL,
    };
    
    SAVER_MODULE(blank_saver, blank_module);

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