Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / ide / ide-legacy.c
1 #include <linux/kernel.h>
2 #include <linux/export.h>
3 #include <linux/ide.h>
4
5 static void ide_legacy_init_one(struct ide_hw **hws, struct ide_hw *hw,
6                                 u8 port_no, const struct ide_port_info *d,
7                                 unsigned long config)
8 {
9         unsigned long base, ctl;
10         int irq;
11
12         if (port_no == 0) {
13                 base = 0x1f0;
14                 ctl  = 0x3f6;
15                 irq  = 14;
16         } else {
17                 base = 0x170;
18                 ctl  = 0x376;
19                 irq  = 15;
20         }
21
22         if (!request_region(base, 8, d->name)) {
23                 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
24                                 d->name, base, base + 7);
25                 return;
26         }
27
28         if (!request_region(ctl, 1, d->name)) {
29                 printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
30                                 d->name, ctl);
31                 release_region(base, 8);
32                 return;
33         }
34
35         ide_std_init_ports(hw, base, ctl);
36         hw->irq = irq;
37         hw->config = config;
38
39         hws[port_no] = hw;
40 }
41
42 int ide_legacy_device_add(const struct ide_port_info *d, unsigned long config)
43 {
44         struct ide_hw hw[2], *hws[] = { NULL, NULL };
45
46         memset(&hw, 0, sizeof(hw));
47
48         if ((d->host_flags & IDE_HFLAG_QD_2ND_PORT) == 0)
49                 ide_legacy_init_one(hws, &hw[0], 0, d, config);
50         ide_legacy_init_one(hws, &hw[1], 1, d, config);
51
52         if (hws[0] == NULL && hws[1] == NULL &&
53             (d->host_flags & IDE_HFLAG_SINGLE))
54                 return -ENOENT;
55
56         return ide_host_add(d, hws, 2, NULL);
57 }
58 EXPORT_SYMBOL_GPL(ide_legacy_device_add);