Merge branch 'master' into csb1725

[mv-sheeva.git] / drivers / sh / intc / virq-debugfs.c

diff --git a/drivers/sh/intc/virq-debugfs.c b/drivers/sh/intc/virq-debugfs.c
new file mode 100644 (file)
index 0000000..9e62ba9
--- /dev/null
+++ b/drivers/sh/intc/virq-debugfs.c
@@ -0,0 +1,64 @@
+/*
+ * Support for virtual IRQ subgroups debugfs mapping.
+ *
+ * Copyright (C) 2010  Paul Mundt
+ *
+ * Modelled after arch/powerpc/kernel/irq.c.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/seq_file.h>
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/debugfs.h>
+#include "internals.h"
+
+static int intc_irq_xlate_debug(struct seq_file *m, void *priv)
+{
+       int i;
+
+       seq_printf(m, "%-5s  %-7s  %-15s\n", "irq", "enum", "chip name");
+
+       for (i = 1; i < nr_irqs; i++) {
+               struct intc_map_entry *entry = intc_irq_xlate_get(i);
+               struct intc_desc_int *desc = entry->desc;
+
+               if (!desc)
+                       continue;
+
+               seq_printf(m, "%5d  ", i);
+               seq_printf(m, "0x%05x  ", entry->enum_id);
+               seq_printf(m, "%-15s\n", desc->chip.name);
+       }
+
+       return 0;
+}
+
+static int intc_irq_xlate_open(struct inode *inode, struct file *file)
+{
+       return single_open(file, intc_irq_xlate_debug, inode->i_private);
+}
+
+static const struct file_operations intc_irq_xlate_fops = {
+       .open = intc_irq_xlate_open,
+       .read = seq_read,
+       .llseek = seq_lseek,
+       .release = single_release,
+};
+
+static int __init intc_irq_xlate_init(void)
+{
+       /*
+        * XXX.. use arch_debugfs_dir here when all of the intc users are
+        * converted.
+        */
+       if (debugfs_create_file("intc_irq_xlate", S_IRUGO, NULL, NULL,
+                               &intc_irq_xlate_fops) == NULL)
+               return -ENOMEM;
+
+       return 0;
+}
+fs_initcall(intc_irq_xlate_init);