1 files changed, 159 insertions, 10 deletions

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index 251e45d6024d..fabbfe1a9253 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -18,6 +18,7 @@
 #include <linux/slab.h>
 #include <linux/of.h>
 #include <linux/device.h>
+#include <linux/init.h>
 
 static DEFINE_SPINLOCK(enable_lock);
 static DEFINE_MUTEX(prepare_lock);
@@ -35,6 +36,137 @@ static struct dentry *rootdir;
 static struct dentry *orphandir;
 static int inited = 0;
 
+static void clk_summary_show_one(struct seq_file *s, struct clk *c, int level)
+{
+	if (!c)
+		return;
+
+	seq_printf(s, "%*s%-*s %-11d %-12d %-10lu",
+		   level * 3 + 1, "",
+		   30 - level * 3, c->name,
+		   c->enable_count, c->prepare_count, c->rate);
+	seq_printf(s, "\n");
+}
+
+static void clk_summary_show_subtree(struct seq_file *s, struct clk *c,
+				     int level)
+{
+	struct clk *child;
+	struct hlist_node *tmp;
+
+	if (!c)
+		return;
+
+	clk_summary_show_one(s, c, level);
+
+	hlist_for_each_entry(child, tmp, &c->children, child_node)
+		clk_summary_show_subtree(s, child, level + 1);
+}
+
+static int clk_summary_show(struct seq_file *s, void *data)
+{
+	struct clk *c;
+	struct hlist_node *tmp;
+
+	seq_printf(s, "   clock                        enable_cnt  prepare_cnt  rate\n");
+	seq_printf(s, "---------------------------------------------------------------------\n");
+
+	mutex_lock(&prepare_lock);
+
+	hlist_for_each_entry(c, tmp, &clk_root_list, child_node)
+		clk_summary_show_subtree(s, c, 0);
+
+	hlist_for_each_entry(c, tmp, &clk_orphan_list, child_node)
+		clk_summary_show_subtree(s, c, 0);
+
+	mutex_unlock(&prepare_lock);
+
+	return 0;
+}
+
+
+static int clk_summary_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, clk_summary_show, inode->i_private);
+}
+
+static const struct file_operations clk_summary_fops = {
+	.open		= clk_summary_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+static void clk_dump_one(struct seq_file *s, struct clk *c, int level)
+{
+	if (!c)
+		return;
+
+	seq_printf(s, "\"%s\": { ", c->name);
+	seq_printf(s, "\"enable_count\": %d,", c->enable_count);
+	seq_printf(s, "\"prepare_count\": %d,", c->prepare_count);
+	seq_printf(s, "\"rate\": %lu", c->rate);
+}
+
+static void clk_dump_subtree(struct seq_file *s, struct clk *c, int level)
+{
+	struct clk *child;
+	struct hlist_node *tmp;
+
+	if (!c)
+		return;
+
+	clk_dump_one(s, c, level);
+
+	hlist_for_each_entry(child, tmp, &c->children, child_node) {
+		seq_printf(s, ",");
+		clk_dump_subtree(s, child, level + 1);
+	}
+
+	seq_printf(s, "}");
+}
+
+static int clk_dump(struct seq_file *s, void *data)
+{
+	struct clk *c;
+	struct hlist_node *tmp;
+	bool first_node = true;
+
+	seq_printf(s, "{");
+
+	mutex_lock(&prepare_lock);
+
+	hlist_for_each_entry(c, tmp, &clk_root_list, child_node) {
+		if (!first_node)
+			seq_printf(s, ",");
+		first_node = false;
+		clk_dump_subtree(s, c, 0);
+	}
+
+	hlist_for_each_entry(c, tmp, &clk_orphan_list, child_node) {
+		seq_printf(s, ",");
+		clk_dump_subtree(s, c, 0);
+	}
+
+	mutex_unlock(&prepare_lock);
+
+	seq_printf(s, "}");
+	return 0;
+}
+
+
+static int clk_dump_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, clk_dump, inode->i_private);
+}
+
+static const struct file_operations clk_dump_fops = {
+	.open		= clk_dump_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
 /* caller must hold prepare_lock */
 static int clk_debug_create_one(struct clk *clk, struct dentry *pdentry)
 {
@@ -168,12 +300,23 @@ static int __init clk_debug_init(void)
 {
 	struct clk *clk;
 	struct hlist_node *tmp;
+	struct dentry *d;
 
 	rootdir = debugfs_create_dir("clk", NULL);
 
 	if (!rootdir)
 		return -ENOMEM;
 
+	d = debugfs_create_file("clk_summary", S_IRUGO, rootdir, NULL,
+				&clk_summary_fops);
+	if (!d)
+		return -ENOMEM;
+
+	d = debugfs_create_file("clk_dump", S_IRUGO, rootdir, NULL,
+				&clk_dump_fops);
+	if (!d)
+		return -ENOMEM;
+
 	orphandir = debugfs_create_dir("orphans", rootdir);
 
 	if (!orphandir)
@@ -259,32 +402,33 @@ late_initcall(clk_disable_unused);
 
 /***    helper functions   ***/
 
-inline const char *__clk_get_name(struct clk *clk)
+const char *__clk_get_name(struct clk *clk)
 {
 	return !clk ? NULL : clk->name;
 }
+EXPORT_SYMBOL_GPL(__clk_get_name);
 
-inline struct clk_hw *__clk_get_hw(struct clk *clk)
+struct clk_hw *__clk_get_hw(struct clk *clk)
 {
 	return !clk ? NULL : clk->hw;
 }
 
-inline u8 __clk_get_num_parents(struct clk *clk)
+u8 __clk_get_num_parents(struct clk *clk)
 {
 	return !clk ? 0 : clk->num_parents;
 }
 
-inline struct clk *__clk_get_parent(struct clk *clk)
+struct clk *__clk_get_parent(struct clk *clk)
 {
 	return !clk ? NULL : clk->parent;
 }
 
-inline unsigned int __clk_get_enable_count(struct clk *clk)
+unsigned int __clk_get_enable_count(struct clk *clk)
 {
 	return !clk ? 0 : clk->enable_count;
 }
 
-inline unsigned int __clk_get_prepare_count(struct clk *clk)
+unsigned int __clk_get_prepare_count(struct clk *clk)
 {
 	return !clk ? 0 : clk->prepare_count;
 }
@@ -310,7 +454,7 @@ out:
 	return ret;
 }
 
-inline unsigned long __clk_get_flags(struct clk *clk)
+unsigned long __clk_get_flags(struct clk *clk)
 {
 	return !clk ? 0 : clk->flags;
 }
@@ -950,9 +1094,6 @@ int clk_set_rate(struct clk *clk, unsigned long rate)
 	/* change the rates */
 	clk_change_rate(top);
 
-	mutex_unlock(&prepare_lock);
-
-	return 0;
 out:
 	mutex_unlock(&prepare_lock);
 
@@ -1663,6 +1804,11 @@ struct of_clk_provider {
 	void *data;
 };
 
+extern struct of_device_id __clk_of_table[];
+
+static const struct of_device_id __clk_of_table_sentinel
+	__used __section(__clk_of_table_end);
+
 static LIST_HEAD(of_clk_providers);
 static DEFINE_MUTEX(of_clk_lock);
 
@@ -1791,6 +1937,9 @@ void __init of_clk_init(const struct of_device_id *matches)
 {
 	struct device_node *np;
 
+	if (!matches)
+		matches = __clk_of_table;
+
 	for_each_matching_node(np, matches) {
 		const struct of_device_id *match = of_match_node(matches, np);
 		of_clk_init_cb_t clk_init_cb = match->data;