devreg.c

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/*
 * Copyright (C) 2001-2003 by egnite Software GmbH. 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. Neither the name of the copyright holders nor the names of
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH 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 EGNITE
 * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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/*
 * $Log$
 * Revision 1.7  2009/01/17 15:37:52  haraldkipp
 * Added some NUTASSERT macros to check function parameters.
 *
 * Revision 1.6  2009/01/17 11:26:52  haraldkipp
 * Getting rid of two remaining BSD types in favor of stdint.
 * Replaced 'u_int' by 'unsinged int' and 'uptr_t' by 'uintptr_t'.
 *
 * Revision 1.5  2008/08/11 07:00:33  haraldkipp
 * BSD types replaced by stdint types (feature request #1282721).
 *
 * Revision 1.4  2004/09/08 10:24:26  haraldkipp
 * RAMSTART is too platform dependant
 *
 * Revision 1.3  2004/03/18 13:42:50  haraldkipp
 * Deprecated header file removed
 *
 * Revision 1.2  2004/03/16 16:48:45  haraldkipp
 * Added Jan Dubiec's H8/300 port.
 *
 * Revision 1.1.1.1  2003/05/09 14:41:47  haraldkipp
 * Initial using 3.2.1
 *
 * Revision 1.3  2003/04/21 17:06:40  harald
 * Device init moved to registration
 *
 * Revision 1.2  2003/02/04 18:15:56  harald
 * Version 3 released
 *
 * Revision 1.1  2003/01/17 18:55:24  harald
 * Device routines splitted
 *
 */

#include <string.h>
#include <sys/nutdebug.h>
#include <dev/uart.h>


NUTDEVICE *nutDeviceList = 0;

NUTDEVICE *NutDeviceLookup(CONST char *name)
{
    NUTDEVICE *dev;

    NUTASSERT(name != NULL);
    for (dev = nutDeviceList; dev; dev = dev->dev_next)
        if (strcmp(dev->dev_name, name) == 0)
            break;

    return dev;
}

int NutRegisterDevice(NUTDEVICE * dev, uintptr_t base, uint8_t irq)
{
    int rc = -1;

    NUTASSERT(dev != NULL);

    if (base)
        dev->dev_base = base;
    if (irq)
        dev->dev_irq = irq;

    if (NutDeviceLookup(dev->dev_name) == 0) {
        if(dev->dev_init == 0 || (*dev->dev_init)(dev) == 0) {
            dev->dev_next = nutDeviceList;
            nutDeviceList = dev;
            rc = 0;
        }
    }
    return rc;
}