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
19static 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
40static 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
45static 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
52static 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}
64fs_initcall(intc_irq_xlate_init);
65