sh: Enable use of the clk fwk on SH-5.
[linux-2.6] / drivers / ide / ide-pnp.c
1 /*
2  * This file provides autodetection for ISA PnP IDE interfaces.
3  * It was tested with "ESS ES1868 Plug and Play AudioDrive" IDE interface.
4  *
5  * Copyright (C) 2000 Andrey Panin <pazke@donpac.ru>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2, or (at your option)
10  * any later version.
11  *
12  * You should have received a copy of the GNU General Public License
13  * (for example /usr/src/linux/COPYING); if not, write to the Free
14  * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
15  */
16
17 #include <linux/init.h>
18 #include <linux/pnp.h>
19 #include <linux/ide.h>
20
21 #define DRV_NAME "ide-pnp"
22
23 /* Add your devices here :)) */
24 static 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
30 static 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         unsigned long base, ctl;
35
36         if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && pnp_irq_valid(dev, 0)))
37                 return -1;
38
39         base = pnp_port_start(dev, 0);
40         ctl = pnp_port_start(dev, 1);
41
42         if (!request_region(base, 8, DRV_NAME)) {
43                 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
44                                 DRV_NAME, base, base + 7);
45                 return -EBUSY;
46         }
47
48         if (!request_region(ctl, 1, DRV_NAME)) {
49                 printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
50                                 DRV_NAME, ctl);
51                 release_region(base, 8);
52                 return -EBUSY;
53         }
54
55         memset(&hw, 0, sizeof(hw));
56         ide_std_init_ports(&hw, base, ctl);
57         hw.irq = pnp_irq(dev, 0);
58
59         hwif = ide_find_port();
60         if (hwif) {
61                 u8 index = hwif->index;
62                 u8 idx[4] = { index, 0xff, 0xff, 0xff };
63
64                 ide_init_port_data(hwif, index);
65                 ide_init_port_hw(hwif, &hw);
66
67                 printk(KERN_INFO "ide%d: generic PnP IDE interface\n", index);
68                 pnp_set_drvdata(dev, hwif);
69
70                 ide_device_add(idx, NULL);
71
72                 return 0;
73         }
74
75         release_region(ctl, 1);
76         release_region(base, 8);
77
78         return -1;
79 }
80
81 static void idepnp_remove(struct pnp_dev *dev)
82 {
83         ide_hwif_t *hwif = pnp_get_drvdata(dev);
84
85         ide_unregister(hwif);
86
87         release_region(pnp_port_start(dev, 1), 1);
88         release_region(pnp_port_start(dev, 0), 8);
89 }
90
91 static struct pnp_driver idepnp_driver = {
92         .name           = "ide",
93         .id_table       = idepnp_devices,
94         .probe          = idepnp_probe,
95         .remove         = idepnp_remove,
96 };
97
98 static int __init pnpide_init(void)
99 {
100         return pnp_register_driver(&idepnp_driver);
101 }
102
103 static void __exit pnpide_exit(void)
104 {
105         pnp_unregister_driver(&idepnp_driver);
106 }
107
108 module_init(pnpide_init);
109 module_exit(pnpide_exit);
110
111 MODULE_LICENSE("GPL");