Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux...

[pandora-kernel.git] / arch / arm / plat-omap / clock.c

diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c
index 964704f..3ba4d11 100644 (file)
--- a/arch/arm/plat-omap/clock.c
+++ b/arch/arm/plat-omap/clock.c
@@ -475,8 +475,41 @@ int __init clk_init(struct clk_functions * custom_clocks)
 /*
  *     debugfs support to trace clock tree hierarchy and attributes
  */
+
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+
 static struct dentry *clk_debugfs_root;
 
+static int clk_dbg_show_summary(struct seq_file *s, void *unused)
+{
+       struct clk *c;
+       struct clk *pa;
+
+       seq_printf(s, "%-30s %-30s %-10s %s\n",
+               "clock-name", "parent-name", "rate", "use-count");
+
+       list_for_each_entry(c, &clocks, node) {
+               pa = c->parent;
+               seq_printf(s, "%-30s %-30s %-10lu %d\n",
+                       c->name, pa ? pa->name : "none", c->rate, c->usecount);
+       }
+
+       return 0;
+}
+
+static int clk_dbg_open(struct inode *inode, struct file *file)
+{
+       return single_open(file, clk_dbg_show_summary, inode->i_private);
+}
+
+static const struct file_operations debug_clock_fops = {
+       .open           = clk_dbg_open,
+       .read           = seq_read,
+       .llseek         = seq_lseek,
+       .release        = single_release,
+};
+
 static int clk_debugfs_register_one(struct clk *c)
 {
        int err;
@@ -545,6 +578,12 @@ static int __init clk_debugfs_init(void)
                if (err)
                        goto err_out;
        }
+
+       d = debugfs_create_file("summary", S_IRUGO,
+               d, NULL, &debug_clock_fops);
+       if (!d)
+               return -ENOMEM;
+
        return 0;
 err_out:
        debugfs_remove_recursive(clk_debugfs_root);