18c2ecf20Sopenharmony_ci/* 28c2ecf20Sopenharmony_ci * Support for virtual IRQ subgroups debugfs mapping. 38c2ecf20Sopenharmony_ci * 48c2ecf20Sopenharmony_ci * Copyright (C) 2010 Paul Mundt 58c2ecf20Sopenharmony_ci * 68c2ecf20Sopenharmony_ci * Modelled after arch/powerpc/kernel/irq.c. 78c2ecf20Sopenharmony_ci * 88c2ecf20Sopenharmony_ci * This file is subject to the terms and conditions of the GNU General Public 98c2ecf20Sopenharmony_ci * License. See the file "COPYING" in the main directory of this archive 108c2ecf20Sopenharmony_ci * for more details. 118c2ecf20Sopenharmony_ci */ 128c2ecf20Sopenharmony_ci#include <linux/seq_file.h> 138c2ecf20Sopenharmony_ci#include <linux/fs.h> 148c2ecf20Sopenharmony_ci#include <linux/init.h> 158c2ecf20Sopenharmony_ci#include <linux/irq.h> 168c2ecf20Sopenharmony_ci#include <linux/debugfs.h> 178c2ecf20Sopenharmony_ci#include "internals.h" 188c2ecf20Sopenharmony_ci 198c2ecf20Sopenharmony_cistatic int intc_irq_xlate_debug(struct seq_file *m, void *priv) 208c2ecf20Sopenharmony_ci{ 218c2ecf20Sopenharmony_ci int i; 228c2ecf20Sopenharmony_ci 238c2ecf20Sopenharmony_ci seq_printf(m, "%-5s %-7s %-15s\n", "irq", "enum", "chip name"); 248c2ecf20Sopenharmony_ci 258c2ecf20Sopenharmony_ci for (i = 1; i < nr_irqs; i++) { 268c2ecf20Sopenharmony_ci struct intc_map_entry *entry = intc_irq_xlate_get(i); 278c2ecf20Sopenharmony_ci struct intc_desc_int *desc = entry->desc; 288c2ecf20Sopenharmony_ci 298c2ecf20Sopenharmony_ci if (!desc) 308c2ecf20Sopenharmony_ci continue; 318c2ecf20Sopenharmony_ci 328c2ecf20Sopenharmony_ci seq_printf(m, "%5d ", i); 338c2ecf20Sopenharmony_ci seq_printf(m, "0x%05x ", entry->enum_id); 348c2ecf20Sopenharmony_ci seq_printf(m, "%-15s\n", desc->chip.name); 358c2ecf20Sopenharmony_ci } 368c2ecf20Sopenharmony_ci 378c2ecf20Sopenharmony_ci return 0; 388c2ecf20Sopenharmony_ci} 398c2ecf20Sopenharmony_ci 408c2ecf20Sopenharmony_cistatic int intc_irq_xlate_open(struct inode *inode, struct file *file) 418c2ecf20Sopenharmony_ci{ 428c2ecf20Sopenharmony_ci return single_open(file, intc_irq_xlate_debug, inode->i_private); 438c2ecf20Sopenharmony_ci} 448c2ecf20Sopenharmony_ci 458c2ecf20Sopenharmony_cistatic const struct file_operations intc_irq_xlate_fops = { 468c2ecf20Sopenharmony_ci .open = intc_irq_xlate_open, 478c2ecf20Sopenharmony_ci .read = seq_read, 488c2ecf20Sopenharmony_ci .llseek = seq_lseek, 498c2ecf20Sopenharmony_ci .release = single_release, 508c2ecf20Sopenharmony_ci}; 518c2ecf20Sopenharmony_ci 528c2ecf20Sopenharmony_cistatic int __init intc_irq_xlate_init(void) 538c2ecf20Sopenharmony_ci{ 548c2ecf20Sopenharmony_ci /* 558c2ecf20Sopenharmony_ci * XXX.. use arch_debugfs_dir here when all of the intc users are 568c2ecf20Sopenharmony_ci * converted. 578c2ecf20Sopenharmony_ci */ 588c2ecf20Sopenharmony_ci if (debugfs_create_file("intc_irq_xlate", S_IRUGO, NULL, NULL, 598c2ecf20Sopenharmony_ci &intc_irq_xlate_fops) == NULL) 608c2ecf20Sopenharmony_ci return -ENOMEM; 618c2ecf20Sopenharmony_ci 628c2ecf20Sopenharmony_ci return 0; 638c2ecf20Sopenharmony_ci} 648c2ecf20Sopenharmony_cifs_initcall(intc_irq_xlate_init); 65