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); 56