1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Support for virtual IRQ subgroups debugfs mapping.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * Copyright (C) 2010 Paul Mundt
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * Modelled after arch/powerpc/kernel/irq.c.
7*4882a593Smuzhiyun *
8*4882a593Smuzhiyun * This file is subject to the terms and conditions of the GNU General Public
9*4882a593Smuzhiyun * License. See the file "COPYING" in the main directory of this archive
10*4882a593Smuzhiyun * for more details.
11*4882a593Smuzhiyun */
12*4882a593Smuzhiyun #include <linux/seq_file.h>
13*4882a593Smuzhiyun #include <linux/fs.h>
14*4882a593Smuzhiyun #include <linux/init.h>
15*4882a593Smuzhiyun #include <linux/irq.h>
16*4882a593Smuzhiyun #include <linux/debugfs.h>
17*4882a593Smuzhiyun #include "internals.h"
18*4882a593Smuzhiyun
intc_irq_xlate_debug(struct seq_file * m,void * priv)19*4882a593Smuzhiyun static int intc_irq_xlate_debug(struct seq_file *m, void *priv)
20*4882a593Smuzhiyun {
21*4882a593Smuzhiyun int i;
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun seq_printf(m, "%-5s %-7s %-15s\n", "irq", "enum", "chip name");
24*4882a593Smuzhiyun
25*4882a593Smuzhiyun for (i = 1; i < nr_irqs; i++) {
26*4882a593Smuzhiyun struct intc_map_entry *entry = intc_irq_xlate_get(i);
27*4882a593Smuzhiyun struct intc_desc_int *desc = entry->desc;
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun if (!desc)
30*4882a593Smuzhiyun continue;
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun seq_printf(m, "%5d ", i);
33*4882a593Smuzhiyun seq_printf(m, "0x%05x ", entry->enum_id);
34*4882a593Smuzhiyun seq_printf(m, "%-15s\n", desc->chip.name);
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun
37*4882a593Smuzhiyun return 0;
38*4882a593Smuzhiyun }
39*4882a593Smuzhiyun
intc_irq_xlate_open(struct inode * inode,struct file * file)40*4882a593Smuzhiyun static int intc_irq_xlate_open(struct inode *inode, struct file *file)
41*4882a593Smuzhiyun {
42*4882a593Smuzhiyun return single_open(file, intc_irq_xlate_debug, inode->i_private);
43*4882a593Smuzhiyun }
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun static const struct file_operations intc_irq_xlate_fops = {
46*4882a593Smuzhiyun .open = intc_irq_xlate_open,
47*4882a593Smuzhiyun .read = seq_read,
48*4882a593Smuzhiyun .llseek = seq_lseek,
49*4882a593Smuzhiyun .release = single_release,
50*4882a593Smuzhiyun };
51*4882a593Smuzhiyun
intc_irq_xlate_init(void)52*4882a593Smuzhiyun static int __init intc_irq_xlate_init(void)
53*4882a593Smuzhiyun {
54*4882a593Smuzhiyun /*
55*4882a593Smuzhiyun * XXX.. use arch_debugfs_dir here when all of the intc users are
56*4882a593Smuzhiyun * converted.
57*4882a593Smuzhiyun */
58*4882a593Smuzhiyun if (debugfs_create_file("intc_irq_xlate", S_IRUGO, NULL, NULL,
59*4882a593Smuzhiyun &intc_irq_xlate_fops) == NULL)
60*4882a593Smuzhiyun return -ENOMEM;
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun return 0;
63*4882a593Smuzhiyun }
64*4882a593Smuzhiyun fs_initcall(intc_irq_xlate_init);
65