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authorSakari Ailus <sakari.ailus@linux.intel.com>2019-10-03 15:32:13 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-10-11 12:26:55 +0300
commite7e242bccb209b5f73455b33928b8680cc6e3319 (patch)
tree71ab6dcb21967662c41dae3fd869b421f5775b60 /drivers/of
parentbc0500c1e43d95cca5352d2345fb0769f314ba22 (diff)
downloadlinux-e7e242bccb209b5f73455b33928b8680cc6e3319.tar.xz
device property: Add a function to obtain a node's prefix
The prefix is used for printing purpose before a node, and it also works as a separator between two nodes. Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Acked-by: Rob Herring <robh@kernel.org> (for OF) Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/of')
-rw-r--r--drivers/of/property.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/of/property.c b/drivers/of/property.c
index 5bed634551ea..e8202f61a5d9 100644
--- a/drivers/of/property.c
+++ b/drivers/of/property.c
@@ -877,6 +877,15 @@ static const char *of_fwnode_get_name(const struct fwnode_handle *fwnode)
return kbasename(to_of_node(fwnode)->full_name);
}
+static const char *of_fwnode_get_name_prefix(const struct fwnode_handle *fwnode)
+{
+ /* Root needs no prefix here (its name is "/"). */
+ if (!to_of_node(fwnode)->parent)
+ return "";
+
+ return "/";
+}
+
static struct fwnode_handle *
of_fwnode_get_parent(const struct fwnode_handle *fwnode)
{
@@ -999,6 +1008,7 @@ const struct fwnode_operations of_fwnode_ops = {
.property_read_int_array = of_fwnode_property_read_int_array,
.property_read_string_array = of_fwnode_property_read_string_array,
.get_name = of_fwnode_get_name,
+ .get_name_prefix = of_fwnode_get_name_prefix,
.get_parent = of_fwnode_get_parent,
.get_next_child_node = of_fwnode_get_next_child_node,
.get_named_child_node = of_fwnode_get_named_child_node,