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ide-pnp.c

/*
 * linux/drivers/ide/ide-pnp.c
 *
 * This file provides autodetection for ISA PnP IDE interfaces.
 * It was tested with "ESS ES1868 Plug and Play AudioDrive" IDE interface.
 *
 * Copyright (C) 2000 Andrey Panin <pazke@donpac.ru>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * You should have received a copy of the GNU General Public License
 * (for example /usr/src/linux/COPYING); if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  
 */

#include <linux/init.h>
#include <linux/pnp.h>
#include <linux/ide.h>

/* Add your devices here :)) */
static struct pnp_device_id idepnp_devices[] = {
      /* Generic ESDI/IDE/ATA compatible hard disk controller */
      {.id = "PNP0600", .driver_data = 0},
      {.id = ""}
};

static int idepnp_probe(struct pnp_dev * dev, const struct pnp_device_id *dev_id)
{
      hw_regs_t hw;
      ide_hwif_t *hwif;
      int index;

      if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && pnp_irq_valid(dev, 0)))
            return -1;

      memset(&hw, 0, sizeof(hw));
      ide_std_init_ports(&hw, pnp_port_start(dev, 0),
                        pnp_port_start(dev, 1));
      hw.irq = pnp_irq(dev, 0);

      index = ide_register_hw(&hw, NULL, 1, &hwif);

      if (index != -1) {
            printk(KERN_INFO "ide%d: generic PnP IDE interface\n", index);
            pnp_set_drvdata(dev,hwif);
            return 0;
      }

      return -1;
}

static void idepnp_remove(struct pnp_dev * dev)
{
      ide_hwif_t *hwif = pnp_get_drvdata(dev);
      if (hwif) {
            ide_unregister(hwif->index);
      } else
            printk(KERN_ERR "idepnp: Unable to remove device, please report.\n");
}

static struct pnp_driver idepnp_driver = {
      .name       = "ide",
      .id_table   = idepnp_devices,
      .probe            = idepnp_probe,
      .remove           = idepnp_remove,
};

void __init pnpide_init(void)
{
      pnp_register_driver(&idepnp_driver);
}

void __exit pnpide_exit(void)
{
      pnp_unregister_driver(&idepnp_driver);
}

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