drm/i915: Make the connector->encoder relationship explicit

Currently we have a exact mapping of a connector onto an encoder for its
whole lifetime. Make this an explicit property of the structure and so
simplify the code.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 9 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index ba94944e4eb1..1ada684ea569 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -150,6 +150,7 @@ struct intel_encoder {
 
 struct intel_connector {
         struct drm_connector base;
+        struct intel_encoder *encoder;
 };
 
 struct intel_crtc {
@@ -234,7 +235,14 @@ extern void intel_encoder_prepare (struct drm_encoder *encoder);
 extern void intel_encoder_commit (struct drm_encoder *encoder);
 extern void intel_encoder_destroy(struct drm_encoder *encoder);
 
-extern struct drm_encoder *intel_attached_encoder(struct drm_connector *connector);
+static inline struct intel_encoder *intel_attached_encoder(struct drm_connector *connector)
+{
+        return to_intel_connector(connector)->encoder;
+}
+
+extern void intel_connector_attach_encoder(struct intel_connector *connector,
+                                           struct intel_encoder *encoder);
+extern struct drm_encoder *intel_best_encoder(struct drm_connector *connector);
 
 extern struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
                                                     struct drm_crtc *crtc);