[XEN][RFC PATCH 06/13] device tree: Add dt_print_node_names()

[Vikram Garhwal <fnu.vikram@xilinx.com>]

Add dt_print_node_names() to print all nodes under a dt_device_node.
dt_print_node_names() takes a dt_device_node type input and prints the node name
of all the subsequent nodes. This is added for debugging purpose for device tree
overlays.

Signed-off-by: Vikram Garhwal <fnu.vikram@xilinx.com>
---
 xen/common/device_tree.c      | 10 ++++++++++
 xen/include/xen/device_tree.h |  5 +++++
 2 files changed, 15 insertions(+)

diff --git a/xen/common/device_tree.c b/xen/common/device_tree.c
index cda21be..bfe3191 100644
--- a/xen/common/device_tree.c
+++ b/xen/common/device_tree.c
@@ -308,6 +308,16 @@ struct dt_device_node *dt_find_node_by_path(const char *path)
     return np;
 }
 
+void dt_print_node_names(struct dt_device_node *dt)
+{
+    struct dt_device_node *np;
+
+    dt_for_each_device_node(dt, np)
+        dt_dprintk("Node name: %s Full name %s\n", np->name, np->full_name);
+
+    return;
+}
+
 int dt_find_node_by_gpath(XEN_GUEST_HANDLE(char) u_path, uint32_t u_plen,
                           struct dt_device_node **node)
 {
diff --git a/xen/include/xen/device_tree.h b/xen/include/xen/device_tree.h
index a4e98a7..dcd96b4 100644
--- a/xen/include/xen/device_tree.h
+++ b/xen/include/xen/device_tree.h
@@ -483,6 +483,11 @@ struct dt_device_node *dt_find_node_by_path(const char *path);
 int dt_find_node_by_gpath(XEN_GUEST_HANDLE(char) u_path, uint32_t u_plen,
                           struct dt_device_node **node);
 
+/*
+ * Prints all node names.
+ */
+void dt_print_node_names(struct dt_device_node *dt);
+
 /**
  * dt_get_parent - Get a node's parent if any
  * @node: Node to get parent
-- 
2.7.4