FreeBSD/Linux Kernel Cross Reference
sys/dev/hpc/pckbd_encode.c

     /*      $NetBSD: pckbd_encode.c,v 1.3 2004/03/13 17:31:34 bjh21 Exp $   */
     
     /*-
      * Copyright (c) 2000 TAKEMRUA, Shin 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.
     * 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. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by the PocketBSD project
     *      and its contributors.
     * 4. Neither the name of the project 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.
     *
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: pckbd_encode.c,v 1.3 2004/03/13 17:31:34 bjh21 Exp $");
    
    #include "opt_wsdisplay_compat.h"
    
    #ifdef WSDISPLAY_COMPAT_RAWKBD
    #include <sys/param.h>
    #include <dev/wscons/wsconsio.h>
    #include <dev/pckbport/pckbdreg.h>
    #include <dev/hpc/pckbd_encode.h>
    
    /*
     * pckbd_encode() is inverse function of pckbd_decode() in dev/pckbc/pckbd.c.
     */
    int
    pckbd_encode(u_int type, int datain, u_char *dataout)
    {
            int res;
            u_char updown;
    
            res = 0;
            updown = (type == WSCONS_EVENT_KEY_UP) ? 0x80 : 0;
    
            /* 0x7f means BREAK key */
            if (datain == 0x7f) {
                    dataout[res++] = KBR_EXTENDED1;
                    dataout[res++] = (0x1d | updown);
                    datain = 0x45;
            }
    
            /* extended keys */
            if (datain & 0x80) {
                    dataout[res++] = KBR_EXTENDED0;
                    datain &= 0x7f;
            }
    
            dataout[res++] = (datain | updown);
    
            return (res);
    }
    #endif /* WSDISPLAY_COMPAT_RAWKBD */

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