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-rw-r--r--include/drm/drm_of.h33
1 files changed, 33 insertions, 0 deletions
diff --git a/include/drm/drm_of.h b/include/drm/drm_of.h
index 8544665ee4f4..3fd87b386ed7 100644
--- a/include/drm/drm_of.h
+++ b/include/drm/drm_of.h
@@ -1,9 +1,12 @@
#ifndef __DRM_OF_H__
#define __DRM_OF_H__
+#include <linux/of_graph.h>
+
struct component_master_ops;
struct device;
struct drm_device;
+struct drm_encoder;
struct device_node;
#ifdef CONFIG_OF
@@ -12,6 +15,9 @@ extern uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
extern int drm_of_component_probe(struct device *dev,
int (*compare_of)(struct device *, void *),
const struct component_master_ops *m_ops);
+extern int drm_of_encoder_active_endpoint(struct device_node *node,
+ struct drm_encoder *encoder,
+ struct of_endpoint *endpoint);
#else
static inline uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
struct device_node *port)
@@ -26,6 +32,33 @@ drm_of_component_probe(struct device *dev,
{
return -EINVAL;
}
+
+static inline int drm_of_encoder_active_endpoint(struct device_node *node,
+ struct drm_encoder *encoder,
+ struct of_endpoint *endpoint)
+{
+ return -EINVAL;
+}
#endif
+static inline int drm_of_encoder_active_endpoint_id(struct device_node *node,
+ struct drm_encoder *encoder)
+{
+ struct of_endpoint endpoint;
+ int ret = drm_of_encoder_active_endpoint(node, encoder,
+ &endpoint);
+
+ return ret ?: endpoint.id;
+}
+
+static inline int drm_of_encoder_active_port_id(struct device_node *node,
+ struct drm_encoder *encoder)
+{
+ struct of_endpoint endpoint;
+ int ret = drm_of_encoder_active_endpoint(node, encoder,
+ &endpoint);
+
+ return ret ?: endpoint.port;
+}
+
#endif /* __DRM_OF_H__ */