This imports of_find_node_with_property and corresponding helpers
from Linux OF API.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@xxxxxxxxx>
---
Cc: barebox@xxxxxxxxxxxxxxxxxxx
---
drivers/of/base.c | 26 ++++++++++++++++++++++++++
include/of.h | 11 +++++++++++
2 files changed, 37 insertions(+), 0 deletions(-)
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 38d6789..39eddb2 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -368,6 +368,32 @@ struct device_node *of_find_compatible_node(struct device_node *from,
EXPORT_SYMBOL(of_find_compatible_node);
/**
+ * of_find_node_with_property - Find a node which has a property with
+ * the given name.
+ * @from: The node to start searching from or NULL, the node
+ * you pass will not be searched, only the next one
+ * will; typically, you pass what the previous call
+ * returned.
+ * @prop_name: The name of the property to look for.
+ *
+ * Returns a pointer to the node found or NULL.
+ */
+struct device_node *of_find_node_with_property(struct device_node *from,
+ const char *prop_name)
+{
+ struct device_node *np;
+
+ of_tree_for_each_node(np, from) {
+ struct property *pp = of_find_property(np, prop_name, NULL);
+ if (pp)
+ return np;
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL(of_find_node_with_property);
+
+/**
* of_match_node - Tell if an device_node has a matching of_match structure
* @matches: array of of device match structures to search in
* @node: the of device structure to match against
diff --git a/include/of.h b/include/of.h
index a33ccfa..f508435 100644
--- a/include/of.h
+++ b/include/of.h
@@ -193,6 +193,8 @@ extern struct device_node *of_find_matching_node_and_match(
struct device_node *from,
const struct of_device_id *matches,
const struct of_device_id **match);
+extern struct device_node *of_find_node_with_property(
+ struct device_node *from, const char *prop_name);
extern int of_device_is_available(const struct device_node *device);
extern void of_alias_scan(void);
@@ -279,6 +281,12 @@ static inline struct device_node *of_find_matching_node_and_match(
return NULL;
}
+static inline struct device_node *of_find_node_with_property(
+ struct device_node *from, const char *prop_name)
+{
+ return NULL;
+}
+
static inline int of_device_is_available(const struct device_node *device)
{
return 0;
@@ -317,5 +325,8 @@ static inline struct device_node *of_find_matching_node(
#define for_each_matching_node_and_match(dn, matches, match) \
for (dn = of_find_matching_node_and_match(NULL, matches, match); \
dn; dn = of_find_matching_node_and_match(dn, matches, match))
+#define for_each_node_with_property(dn, prop_name) \
+ for (dn = of_find_node_with_property(NULL, prop_name); dn; \
+ dn = of_find_node_with_property(dn, prop_name))
#endif /* __OF_H */
--
1.7.2.5
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