linux/drivers/ide/ide-pnp.c
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   1/*
   2 * linux/drivers/ide/ide-pnp.c
   3 *
   4 * This file provides autodetection for ISA PnP IDE interfaces.
   5 * It was tested with "ESS ES1868 Plug and Play AudioDrive" IDE interface.
   6 *
   7 * Copyright (C) 2000 Andrey Panin <pazke@donpac.ru>
   8 *
   9 * This program is free software; you can redistribute it and/or modify
  10 * it under the terms of the GNU General Public License as published by
  11 * the Free Software Foundation; either version 2, or (at your option)
  12 * any later version.
  13 *
  14 * You should have received a copy of the GNU General Public License
  15 * (for example /usr/src/linux/COPYING); if not, write to the Free
  16 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  
  17 */
  18
  19#include <linux/init.h>
  20#include <linux/pnp.h>
  21#include <linux/ide.h>
  22
  23/* Add your devices here :)) */
  24static struct pnp_device_id idepnp_devices[] = {
  25        /* Generic ESDI/IDE/ATA compatible hard disk controller */
  26        {.id = "PNP0600", .driver_data = 0},
  27        {.id = ""}
  28};
  29
  30static int idepnp_probe(struct pnp_dev * dev, const struct pnp_device_id *dev_id)
  31{
  32        hw_regs_t hw;
  33        ide_hwif_t *hwif;
  34        int index;
  35
  36        if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && pnp_irq_valid(dev, 0)))
  37                return -1;
  38
  39        memset(&hw, 0, sizeof(hw));
  40        ide_std_init_ports(&hw, pnp_port_start(dev, 0),
  41                                pnp_port_start(dev, 1));
  42        hw.irq = pnp_irq(dev, 0);
  43
  44        index = ide_register_hw(&hw, NULL, 1, &hwif);
  45
  46        if (index != -1) {
  47                printk(KERN_INFO "ide%d: generic PnP IDE interface\n", index);
  48                pnp_set_drvdata(dev,hwif);
  49                return 0;
  50        }
  51
  52        return -1;
  53}
  54
  55static void idepnp_remove(struct pnp_dev * dev)
  56{
  57        ide_hwif_t *hwif = pnp_get_drvdata(dev);
  58        if (hwif) {
  59                ide_unregister(hwif->index);
  60        } else
  61                printk(KERN_ERR "idepnp: Unable to remove device, please report.\n");
  62}
  63
  64static struct pnp_driver idepnp_driver = {
  65        .name           = "ide",
  66        .id_table       = idepnp_devices,
  67        .probe          = idepnp_probe,
  68        .remove         = idepnp_remove,
  69};
  70
  71void __init pnpide_init(void)
  72{
  73        pnp_register_driver(&idepnp_driver);
  74}
  75
  76void __exit pnpide_exit(void)
  77{
  78        pnp_unregister_driver(&idepnp_driver);
  79}
  80
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