diff options
| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2019-10-03 15:32:11 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-10-11 11:26:55 +0200 |
| commit | 87e5e95db31a27d117fbb4a5d464f44adb4c2ee2 (patch) | |
| tree | 8169cd9ea74f307d7b31d10fddefccafed9ce813 /include/linux | |
| parent | a57b7fb783eb352d91b0bf8391682b30bacae667 (diff) | |
device property: Add functions for accessing node's parents
Add two convenience functions for accessing node's parents:
fwnode_count_parents() returns the number of parent nodes a given node
has. fwnode_get_nth_parent() returns node's parent at a given distance
from the node itself.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/property.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/property.h b/include/linux/property.h index 87d795a1e2d6..ea27c5811e1b 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -83,6 +83,9 @@ struct fwnode_handle *fwnode_find_reference(const struct fwnode_handle *fwnode, struct fwnode_handle *fwnode_get_parent(const struct fwnode_handle *fwnode); struct fwnode_handle *fwnode_get_next_parent( struct fwnode_handle *fwnode); +unsigned int fwnode_count_parents(const struct fwnode_handle *fwn); +struct fwnode_handle *fwnode_get_nth_parent(struct fwnode_handle *fwn, + unsigned int depth); struct fwnode_handle *fwnode_get_next_child_node( const struct fwnode_handle *fwnode, struct fwnode_handle *child); struct fwnode_handle *fwnode_get_next_available_child_node( |