drivers/sh/intc/virq-debugfs.c

   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_show(struct seq_file *m, void *priv)
  20 {
  21         const unsigned int nr_irqs = irq_get_nr_irqs();
  22         int i;
  23
  24         seq_printf(m, "%-5s  %-7s  %-15s\n", "irq", "enum", "chip name");
  25
  26         for (i = 1; i < nr_irqs; i++) {
  27                 struct intc_map_entry *entry = intc_irq_xlate_get(i);
  28                 struct intc_desc_int *desc = entry->desc;
  29
  30                 if (!desc)
  31                         continue;
  32
  33                 seq_printf(m, "%5d  ", i);
  34                 seq_printf(m, "0x%05x  ", entry->enum_id);
  35                 seq_printf(m, "%-15s\n", desc->chip.name);
  36         }
  37
  38         return 0;
  39 }
  40
  41 DEFINE_SHOW_ATTRIBUTE(intc_irq_xlate);
  42
  43 static int __init intc_irq_xlate_init(void)
  44 {
  45         /*
  46          * XXX.. use arch_debugfs_dir here when all of the intc users are
  47          * converted.
  48          */
  49         if (debugfs_create_file("intc_irq_xlate", S_IRUGO, NULL, NULL,
  50                                 &intc_irq_xlate_fops) == NULL)
  51                 return -ENOMEM;
  52
  53         return 0;
  54 }
  55 fs_initcall(intc_irq_xlate_init);