NetBSD/sys/dev/hpc/pckbd_encode.c

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/* $NetBSD: pckbd_encode.c,v 1.4 2005/12/11 12:21:22 christos 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.
*
*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: pckbd_encode.c,v 1.4 2005/12/11 12:21:22 christos Exp $");
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#include "opt_wsdisplay_compat.h"
#ifdef WSDISPLAY_COMPAT_RAWKBD
#include <sys/param.h>
#include <dev/wscons/wsconsio.h>
#include <dev/pckbport/pckbdreg.h>
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#include <dev/hpc/pckbd_encode.h>
/*
* pckbd_encode() is inverse function of pckbd_decode() in dev/pckbc/pckbd.c.
*/
int
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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 */