dm: core: Add helper to compare node names

Add helper to compare node names.

Signed-off-by: Kishon Vijay Abraham I <[email protected]>
Signed-off-by: Lokesh Vutla <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

2 files changed, 23 insertions, 0 deletions

diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c
index dda6c76e834..701b23e2c91 100644
--- a/drivers/core/ofnode.c
+++ b/drivers/core/ofnode.c
@@ -18,6 +18,19 @@
 #include <linux/ioport.h>
 #include <asm/global_data.h>
 
+bool ofnode_name_eq(ofnode node, const char *name)
+{
+	const char *node_name;
+	size_t len;
+
+	assert(ofnode_valid(node));
+
+	node_name = ofnode_get_name(node);
+	len = strchrnul(node_name, '@') - node_name;
+
+	return (strlen(name) == len) && !strncmp(node_name, name, len);
+}
+
 int ofnode_read_u32(ofnode node, const char *propname, u32 *outp)
 {
 	return ofnode_read_u32_index(node, propname, 0, outp);
diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h
index 3da05d8b217..4e1a8447e65 100644
--- a/include/dm/ofnode.h
+++ b/include/dm/ofnode.h
@@ -232,6 +232,16 @@ static inline ofnode ofnode_root(void)
 }
 
 /**
+ * ofnode_name_eq() - Check if the node name is equivalent to a given name
+ *                    ignoring the unit address
+ *
+ * @node:	valid node reference that has to be compared
+ * @name:	name that has to be compared with the node name
+ * @return true if matches, false if it doesn't match
+ */
+bool ofnode_name_eq(ofnode node, const char *name);
+
+/**
  * ofnode_read_u32() - Read a 32-bit integer from a property
  *
  * @ref:	valid node reference to read property from