[PATCH v5 01/20] dm: core: Add helper to compare node names

Kishon Vijay Abraham I
2021-07-21T15:59:29Z

Add helper to compare node names.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
drivers/core/ofnode.c | 13 +++++++++++++
include/dm/ofnode.h | 10 ++++++++++
2 files changed, 23 insertions(+)

diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c
index eeeccfb446..e83d3141b2 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 3da05d8b21..4e1a8447e6 100644
--- a/include/dm/ofnode.h
+++ b/include/dm/ofnode.h
@@ -231,6 +231,16 @@ static inline ofnode ofnode_root(void)
return node;
}

+/**
+ * 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
*
--
2.17.1