[PATCH 11/17] drm/amd/display: Use DRM helper for best_encoder

[Bhawanpreet Lakha]

From: Leo Li <sunpeng.li at amd.com>

[Why]
Our implementation is functionally identical to DRM's

Note that instead of checking if the provided id is 0, the helper
follows through with the mode object search. However, It will still
return NULL, since 0 is not a valid object id, and missed searches
will return NULL.

[How]
Remove our implementation, and replace it with
drm_atomic_helper_best_encoder.

Change-Id: I96a0adce860385dc3efe9b2b3b8b89c06eeff273
Signed-off-by: Leo Li <sunpeng.li at amd.com>
Reviewed-by: David Francis <David.Francis at amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha at amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 24 +----------------------
 1 file changed, 1 insertion(+), 23 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 4e4ddab7947b..913c0f5b7cd4 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2869,28 +2869,6 @@ static const struct drm_connector_funcs amdgpu_dm_connector_funcs = {
 	.atomic_get_property = amdgpu_dm_connector_atomic_get_property
 };
 
-static struct drm_encoder *best_encoder(struct drm_connector *connector)
-{
-	int enc_id = connector->encoder_ids[0];
-	struct drm_mode_object *obj;
-	struct drm_encoder *encoder;
-
-	DRM_DEBUG_DRIVER("Finding the best encoder\n");
-
-	/* pick the encoder ids */
-	if (enc_id) {
-		obj = drm_mode_object_find(connector->dev, NULL, enc_id, DRM_MODE_OBJECT_ENCODER);
-		if (!obj) {
-			DRM_ERROR("Couldn't find a matching encoder for our connector\n");
-			return NULL;
-		}
-		encoder = obj_to_encoder(obj);
-		return encoder;
-	}
-	DRM_ERROR("No encoder id\n");
-	return NULL;
-}
-
 static int get_modes(struct drm_connector *connector)
 {
 	return amdgpu_dm_connector_get_modes(connector);
@@ -3011,7 +2989,7 @@ amdgpu_dm_connector_helper_funcs = {
 	 */
 	.get_modes = get_modes,
 	.mode_valid = amdgpu_dm_connector_mode_valid,
-	.best_encoder = best_encoder
+	.best_encoder = drm_atomic_helper_best_encoder
 };
 
 static void dm_crtc_helper_disable(struct drm_crtc *crtc)
-- 
2.14.1