[PATCH v5 02/10] drm/bridge: Add a helper to setup both the of_node and fwnode of drm bridge

[Sui Jingfeng]

The newly added helper is drm_bridge_set_node(), the reason behind of this
introduction is that the name 'of_node' itself has a smell of DT dependent,
when we are going to make drivers truly DT independent, we have to has a
way to hide it from its user referencing and/or dereferencing.

Please note that the introduction of drm_bridge_set_node() is actually
trying to follow the convention used by driver core, see device_set_node()
for reference.

While at it, include the of.h header as the drm_bridge struct always has
the of_node as its member. Therefore drop the forward declaration.

Signed-off-by: Sui Jingfeng <sui.jingfeng at linux.dev>
---
 include/drm/drm_bridge.h | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index a1bb19425761..b18e7c2f62c9 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -26,14 +26,13 @@
 #include <linux/ctype.h>
 #include <linux/list.h>
 #include <linux/mutex.h>
+#include <linux/of.h>
 
 #include <drm/drm_atomic.h>
 #include <drm/drm_encoder.h>
 #include <drm/drm_mode_object.h>
 #include <drm/drm_modes.h>
 
-struct device_node;
-
 struct drm_bridge;
 struct drm_bridge_timings;
 struct drm_connector;
@@ -790,6 +789,13 @@ int drm_bridge_attach(struct drm_encoder *encoder, struct drm_bridge *bridge,
 		      struct drm_bridge *previous,
 		      enum drm_bridge_attach_flags flags);
 
+static inline void
+drm_bridge_set_node(struct drm_bridge *bridge, struct fwnode_handle *fwnode)
+{
+	bridge->fwnode = fwnode;
+	bridge->of_node = to_of_node(fwnode);
+}
+
 #ifdef CONFIG_OF
 struct drm_bridge *of_drm_find_bridge(struct device_node *np);
 #else
-- 
2.34.1