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2be6bb0c PM |
1 | /* |
2 | * Support for virtual IRQ subgroups debugfs mapping. | |
3 | * | |
4 | * Copyright (C) 2010 Paul Mundt | |
5 | * | |
6 | * Modelled after arch/powerpc/kernel/irq.c. | |
7 | * | |
8 | * This file is subject to the terms and conditions of the GNU General Public | |
9 | * License. See the file "COPYING" in the main directory of this archive | |
10 | * for more details. | |
11 | */ | |
12 | #include <linux/seq_file.h> | |
13 | #include <linux/fs.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/irq.h> | |
16 | #include <linux/debugfs.h> | |
17 | #include "internals.h" | |
18 | ||
19 | static int intc_irq_xlate_debug(struct seq_file *m, void *priv) | |
20 | { | |
21 | int i; | |
22 | ||
23 | seq_printf(m, "%-5s %-7s %-15s\n", "irq", "enum", "chip name"); | |
24 | ||
25 | for (i = 1; i < nr_irqs; i++) { | |
26 | struct intc_map_entry *entry = intc_irq_xlate_get(i); | |
27 | struct intc_desc_int *desc = entry->desc; | |
28 | ||
29 | if (!desc) | |
30 | continue; | |
31 | ||
32 | seq_printf(m, "%5d ", i); | |
33 | seq_printf(m, "0x%05x ", entry->enum_id); | |
34 | seq_printf(m, "%-15s\n", desc->chip.name); | |
35 | } | |
36 | ||
37 | return 0; | |
38 | } | |
39 | ||
40 | static int intc_irq_xlate_open(struct inode *inode, struct file *file) | |
41 | { | |
42 | return single_open(file, intc_irq_xlate_debug, inode->i_private); | |
43 | } | |
44 | ||
45 | static const struct file_operations intc_irq_xlate_fops = { | |
46 | .open = intc_irq_xlate_open, | |
47 | .read = seq_read, | |
48 | .llseek = seq_lseek, | |
49 | .release = single_release, | |
50 | }; | |
51 | ||
52 | static int __init intc_irq_xlate_init(void) | |
53 | { | |
54 | /* | |
55 | * XXX.. use arch_debugfs_dir here when all of the intc users are | |
56 | * converted. | |
57 | */ | |
58 | if (debugfs_create_file("intc_irq_xlate", S_IRUGO, NULL, NULL, | |
59 | &intc_irq_xlate_fops) == NULL) | |
60 | return -ENOMEM; | |
61 | ||
62 | return 0; | |
63 | } | |
64 | fs_initcall(intc_irq_xlate_init); |