This imports of_find_compatible_node and corresponding for_each_compatible_node
helper from Linux OF API.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@xxxxxxxxx>
---
Cc: barebox@xxxxxxxxxxxxxxxxxxx
---
drivers/of/base.c | 30 ++++++++++++++++++++++++++++++
include/of.h | 13 +++++++++++++
2 files changed, 43 insertions(+), 0 deletions(-)
diff --git a/drivers/of/base.c b/drivers/of/base.c
index d736bef..50a4df0 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -338,6 +338,36 @@ struct device_node *of_find_node_by_name(struct device_node *from,
EXPORT_SYMBOL(of_find_node_by_name);
/**
+ * of_find_compatible_node - Find a node based on type and one of the
+ * tokens in its "compatible" property
+ * @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.
+ * @type: The type string to match "device_type" or NULL to ignore
+ * (currently always ignored in barebox)
+ * @compatible: The string to match to one of the tokens in the device
+ * "compatible" list.
+ *
+ * Returns a pointer to the node found or NULL.
+ */
+struct device_node *of_find_compatible_node(struct device_node *from,
+ const char *type, const char *compatible)
+{
+ struct device_node *np;
+
+ if (!from)
+ from = root_node;
+
+ of_tree_for_each_node(np, from)
+ if (of_device_is_compatible(np, compatible))
+ return np;
+
+ return NULL;
+}
+EXPORT_SYMBOL(of_find_compatible_node);
+
+/**
* 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 8cbfe7a..b334e3a 100644
--- a/include/of.h
+++ b/include/of.h
@@ -187,6 +187,8 @@ extern struct device_node *of_find_node_by_name(struct device_node *from,
extern struct device_node *of_find_node_by_path_from(struct device_node *from,
const char *path);
extern struct device_node *of_find_node_by_path(const char *path);
+extern struct device_node *of_find_compatible_node(struct device_node *from,
+ const char *type, const char *compat);
extern int of_device_is_available(const struct device_node *device);
extern void of_alias_scan(void);
@@ -257,6 +259,14 @@ static inline struct device_node *of_find_node_by_name(struct device_node *from,
return NULL;
}
+static inline struct device_node *of_find_compatible_node(
+ struct device_node *from,
+ const char *type,
+ const char *compat)
+{
+ return NULL;
+}
+
static inline int of_device_is_available(const struct device_node *device)
{
return 0;
@@ -280,5 +290,8 @@ static inline const char *of_alias_get(struct device_node *np)
#define for_each_node_by_name(dn, name) \
for (dn = of_find_node_by_name(NULL, name); dn; \
dn = of_find_node_by_name(dn, name))
+#define for_each_compatible_node(dn, type, compatible) \
+ for (dn = of_find_compatible_node(NULL, type, compatible); dn; \
+ dn = of_find_compatible_node(dn, type, compatible))
#endif /* __OF_H */
--
1.7.2.5
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