/*      $NetBSD: cons.c,v 1.1 2014/02/24 07:23:43 skrll Exp $   */

/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1990, 1993
*      The Regents of the University of California.  All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* 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.
* 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. Neither the name of the University nor the names of its contributors
*    may be used to endorse or promote products derived from this software
*    without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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.
*
* from: Utah Hdr: cons.c 1.7 92/02/28
*
*      @(#)cons.c      8.1 (Berkeley) 6/10/93
*/

#include "libsa.h"
#include <sys/param.h>
#include <dev/cons.h>

int noconsole;

void
cninit(void)
{
       struct consdev *cp;

       cn_tab = NULL;
       noconsole = 1;
       for (cp = constab; cp->cn_probe; cp++) {
               (*cp->cn_probe)(cp);
               if (cp->cn_pri > CN_DEAD &&
                   (cn_tab == NULL || cp->cn_pri > cn_tab->cn_pri)) {
                       cn_tab = cp;
               }
       }
       if (cn_tab) {
               (*cn_tab->cn_init)(cn_tab);
               noconsole = 0;
       }
}

int
cngetc(void)
{

       if (cn_tab)
               return((*cn_tab->cn_getc)(0));
       return(0);
}

int
tcngetc(void)
{
       if (cn_tab)
               return((*cn_tab->cn_getc)(0x80));
       return(0);
}

void
cnputc(int c)
{

       /* Note: the dev_t arguments are not used! */
       if (cn_tab)
               (*cn_tab->cn_putc)(0, c);
}