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/*
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* libieee1284 - IEEE 1284 library
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* Copyright (C) 2001, 2002 Tim Waugh <twaugh@redhat.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <fcntl.h>
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#include <string.h>
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#if !(defined __MINGW32__ || defined _MSC_VER)
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#include <sys/ioctl.h>
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#endif
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#include <sys/stat.h>
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#include <sys/types.h>
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#ifdef __unix__
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#include <unistd.h>
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#endif
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#include "config.h"
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#include "access.h"
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#include "conf.h"
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#include "debug.h"
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#include "default.h"
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#include "delay.h"
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#include "detect.h"
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#include "ieee1284.h"
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#include "parport.h"
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static int
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init_port (struct parport *port, int flags, int *caps)
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{
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struct parport_internal *priv = port->priv;
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int ret = E1284_INIT;
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debugprintf ("==> init_port\n");
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if ((capabilities & PPDEV_CAPABLE) && priv->device && !conf.disallow_ppdev)
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{
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priv->type = PPDEV_CAPABLE;
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memcpy (priv->fn, &ppdev_access_methods, sizeof *priv->fn);
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ret = priv->fn->init (port, flags, caps);
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debugprintf ("Got %d from ppdev init\n", ret);
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}
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if (ret && (capabilities & IO_CAPABLE))
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{
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priv->type = IO_CAPABLE;
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memcpy (priv->fn, &io_access_methods, sizeof *priv->fn);
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ret = priv->fn->init (port, flags, caps);
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debugprintf ("Got %d from IO init\n", ret);
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}
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if (ret && (capabilities & DEV_PORT_CAPABLE))
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{
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priv->type = DEV_PORT_CAPABLE;
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memcpy (priv->fn, &io_access_methods, sizeof *priv->fn);
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ret = priv->fn->init (port, flags, caps);
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debugprintf ("Got %d from /dev/port init\n", ret);
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}
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if (ret && (capabilities & LPT_CAPABLE))
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{
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priv->type = LPT_CAPABLE;
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memcpy (priv->fn, &lpt_access_methods, sizeof *priv->fn);
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ret = priv->fn->init (port, flags, caps);
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debugprintf ("Got %d from LPT init\n", ret);
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/* No bi-dir support in NT :( */
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if (caps != NULL) *caps = CAP1284_COMPAT | CAP1284_NIBBLE;
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}
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debugprintf ("<== %d\n", ret);
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return ret;
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}
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int
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ieee1284_open (struct parport *port, int flags, int *capabilities)
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{
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struct parport_internal *priv = port->priv;
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int ret;
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debugprintf ("==> ieee1284_open\n");
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if (priv->opened)
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{
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debugprintf ("<== E1284_INVALIDPORT (already open)\n");
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return E1284_INVALIDPORT;
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}
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if (capabilities)
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*capabilities = (CAP1284_NIBBLE | CAP1284_BYTE | CAP1284_COMPAT |
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CAP1284_ECPSWE);
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ret = init_port (port, flags, capabilities);
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if (ret)
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{
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debugprintf ("<== %d (propagated)\n", ret);
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return ret;
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}
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priv->opened = 1;
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priv->ref++;
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return E1284_OK;
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}
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/*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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