Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/dtor/input
[pandora-kernel.git] / drivers / ide / arm / rapide.c
1 /*
2  * linux/drivers/ide/arm/rapide.c
3  *
4  * Copyright (c) 1996-2002 Russell King.
5  */
6
7 #include <linux/module.h>
8 #include <linux/slab.h>
9 #include <linux/blkdev.h>
10 #include <linux/errno.h>
11 #include <linux/ide.h>
12 #include <linux/init.h>
13
14 #include <asm/ecard.h>
15
16 /*
17  * Something like this really should be in generic code, but isn't.
18  */
19 static ide_hwif_t *
20 rapide_locate_hwif(void __iomem *base, void __iomem *ctrl, unsigned int sz, int irq)
21 {
22         unsigned long port = (unsigned long)base;
23         ide_hwif_t *hwif;
24         int index, i;
25
26         for (index = 0; index < MAX_HWIFS; ++index) {
27                 hwif = ide_hwifs + index;
28                 if (hwif->io_ports[IDE_DATA_OFFSET] == port)
29                         goto found;
30         }
31
32         for (index = 0; index < MAX_HWIFS; ++index) {
33                 hwif = ide_hwifs + index;
34                 if (hwif->io_ports[IDE_DATA_OFFSET] == 0)
35                         goto found;
36         }
37
38         return NULL;
39
40  found:
41         for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
42                 hwif->hw.io_ports[i] = port;
43                 hwif->io_ports[i] = port;
44                 port += sz;
45         }
46         hwif->hw.io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
47         hwif->io_ports[IDE_CONTROL_OFFSET] = (unsigned long)ctrl;
48         hwif->hw.irq = hwif->irq = irq;
49         hwif->mmio = 1;
50         default_hwif_mmiops(hwif);
51
52         return hwif;
53 }
54
55 static int __devinit
56 rapide_probe(struct expansion_card *ec, const struct ecard_id *id)
57 {
58         ide_hwif_t *hwif;
59         void __iomem *base;
60         int ret;
61
62         ret = ecard_request_resources(ec);
63         if (ret)
64                 goto out;
65
66         base = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
67                        ecard_resource_len(ec, ECARD_RES_MEMC));
68         if (!base) {
69                 ret = -ENOMEM;
70                 goto release;
71         }
72
73         hwif = rapide_locate_hwif(base, base + 0x818, 1 << 6, ec->irq);
74         if (hwif) {
75                 hwif->hwif_data = base;
76                 hwif->gendev.parent = &ec->dev;
77                 hwif->noprobe = 0;
78                 probe_hwif_init(hwif);
79                 create_proc_ide_interfaces();
80                 ecard_set_drvdata(ec, hwif);
81                 goto out;
82         }
83
84         iounmap(base);
85  release:
86         ecard_release_resources(ec);
87  out:
88         return ret;
89 }
90
91 static void __devexit rapide_remove(struct expansion_card *ec)
92 {
93         ide_hwif_t *hwif = ecard_get_drvdata(ec);
94
95         ecard_set_drvdata(ec, NULL);
96
97         /* there must be a better way */
98         ide_unregister(hwif - ide_hwifs);
99         iounmap(hwif->hwif_data);
100         ecard_release_resources(ec);
101 }
102
103 static struct ecard_id rapide_ids[] = {
104         { MANU_YELLOWSTONE, PROD_YELLOWSTONE_RAPIDE32 },
105         { 0xffff, 0xffff }
106 };
107
108 static struct ecard_driver rapide_driver = {
109         .probe          = rapide_probe,
110         .remove         = __devexit_p(rapide_remove),
111         .id_table       = rapide_ids,
112         .drv = {
113                 .name   = "rapide",
114         },
115 };
116
117 static int __init rapide_init(void)
118 {
119         return ecard_register_driver(&rapide_driver);
120 }
121
122 MODULE_LICENSE("GPL");
123 MODULE_DESCRIPTION("Yellowstone RAPIDE driver");
124
125 module_init(rapide_init);