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device property: Add fwnode_get_parent()

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Now that ACPI has support for returning parent firmware node for both types
of nodes we can expose this to others as well. This adds a new function
fwnode_get_parent() that can be used for DT and ACPI nodes to retrieve the
parent firmware node.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Mika Westerberg
2017-03-28 10:52:17 +03:00
committed by Rafael J. Wysocki
parent dfa672fbc0
commit afaf26fd84
2 changed files with 27 additions and 0 deletions
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include/linux/property.h
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@@ -70,6 +70,8 @@ int fwnode_property_read_string(struct fwnode_handle *fwnode,
int fwnode_property_match_string(struct fwnode_handle *fwnode,
const char *propname, const char *string);
struct fwnode_handle *fwnode_get_parent(struct fwnode_handle *fwnode);
struct fwnode_handle *device_get_next_child_node(struct device *dev,
struct fwnode_handle *child);