Add function for retrieving full node path of a given ofnode.
This uses np->full_name if OF is live, otherwise a call to
fdt_get_path() is made.
Signed-off-by: Marek Behún
Cc: Simon Glass
---
drivers/core/ofnode.c | 25 +
include/dm/ofnode.h | 10 ++
test/dm/ofnode.c | 21 +
3 files changed, 56 insertions(+)
diff --git a/drivers/core/ofnode.c b/drivers/core/ofnode.c
index 702cd7482c..5bc40618d7 100644
--- a/drivers/core/ofnode.c
+++ b/drivers/core/ofnode.c
@@ -286,6 +286,31 @@ const char *ofnode_get_name(ofnode node)
return fdt_get_name(gd->fdt_blob, ofnode_to_offset(node), NULL);
}
+int ofnode_get_path(ofnode node, char *buf, int buflen)
+{
+ assert(ofnode_valid(node));
+
+ if (ofnode_is_np(node)) {
+ if (strlen(node.np->full_name) >= buflen)
+ return -ENOSPC;
+
+ strcpy(buf, node.np->full_name);
+
+ return 0;
+ } else {
+ int res;
+
+ res = fdt_get_path(gd->fdt_blob, ofnode_to_offset(node), buf,
+ buflen);
+ if (!res)
+ return res;
+ else if (res == -FDT_ERR_NOSPACE)
+ return -ENOSPC;
+ else
+ return -EINVAL;
+ }
+}
+
ofnode ofnode_get_by_phandle(uint phandle)
{
ofnode node;
diff --git a/include/dm/ofnode.h b/include/dm/ofnode.h
index 8e641418cb..8518e3cabb 100644
--- a/include/dm/ofnode.h
+++ b/include/dm/ofnode.h
@@ -458,6 +458,16 @@ ofnode ofnode_get_parent(ofnode node);
*/
const char *ofnode_get_name(ofnode node);
+/**
+ * ofnode_get_path() - get the full path of a node
+ *
+ * @node: valid node to look up
+ * @buf: buffer to write the node path into
+ * @buflen: buffer size
+ * @return 0 if OK, -ve on error
+ */
+int ofnode_get_path(ofnode node, char *buf, int buflen);
+
/**
* ofnode_get_by_phandle() - get ofnode from phandle
*
diff --git a/test/dm/ofnode.c b/test/dm/ofnode.c
index 48c121df25..1fe635c94b 100644
--- a/test/dm/ofnode.c
+++ b/test/dm/ofnode.c
@@ -290,3 +290,24 @@ static int dm_test_ofnode_get_addr_size(struct
unit_test_state *uts)
return 0;
}
DM_TEST(dm_test_ofnode_get_addr_size, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
+
+static int dm_test_ofnode_get_path(struct unit_test_state *uts)
+{
+ const char *path = "/translation-test@8000/xlatebus@4,400/devs/dev@19";
+ char buf[64];
+ ofnode node;
+ int res;
+
+ node = ofnode_path(path);
+ ut_assert(ofnode_valid(node));
+
+ res = ofnode_get_path(node, buf, 64);
+ ut_asserteq(0, res);
+ ut_asserteq_str(path, buf);
+
+ res = ofnode_get_path(node, buf, 32);
+ ut_asserteq(-ENOSPC, res);
+
+ return 0;
+}
+DM_TEST(dm_test_ofnode_get_path, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT);
--
2.26.2
