[PATCH] drm/amdgpu: Remove default best_encoder hook from DC

[Daniel Vetter <daniel.vetter@ffwll.ch>]

For atomic driver this is the default, no need to reimplement it. We
still need to keep the copypasta for not-atomic drivers though, since
no one polished the legacy crtc helpers as much as the atomic ones.

v2: amdgpu uses ->best_encoder internally, give it a local copy. It
might be a good idea to merge the connector and encoder into one
amdgpu_dm_sink structure, that might match DC internals better. At
least for non-DPMST outputs. Kudos to Ville for spotting this.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Cc: Tony Cheng <Tony.Cheng@amd.com>
Cc: "Leo (Sunpeng) Li" <sunpeng.li@amd.com>
Cc: Shirish S <shirish.s@amd.com>
---
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 36 ++++---------------
 1 file changed, 7 insertions(+), 29 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 af6adffba788..cbc84b7469eb 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2794,28 +2794,6 @@ 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);
@@ -2934,7 +2912,6 @@ amdgpu_dm_connector_helper_funcs = {
 	 */
 	.get_modes = get_modes,
 	.mode_valid = amdgpu_dm_connector_mode_valid,
-	.best_encoder = best_encoder
 };
 
 static void dm_crtc_helper_disable(struct drm_crtc *crtc)
@@ -3332,14 +3309,17 @@ static int to_drm_connector_type(enum signal_type st)
 	}
 }
 
+static struct drm_encoder *amdgpu_dm_connector_to_encoder(struct drm_connector *connector)
+{
+	return drm_encoder_find(connector->dev, NULL, connector->encoder_ids[0]);
+}
+
 static void amdgpu_dm_get_native_mode(struct drm_connector *connector)
 {
-	const struct drm_connector_helper_funcs *helper =
-		connector->helper_private;
 	struct drm_encoder *encoder;
 	struct amdgpu_encoder *amdgpu_encoder;
 
-	encoder = helper->best_encoder(connector);
+	encoder = amdgpu_dm_connector_to_encoder(connector);
 
 	if (encoder == NULL)
 		return;
@@ -3466,14 +3446,12 @@ static void amdgpu_dm_connector_ddc_get_modes(struct drm_connector *connector,
 
 static int amdgpu_dm_connector_get_modes(struct drm_connector *connector)
 {
-	const struct drm_connector_helper_funcs *helper =
-			connector->helper_private;
 	struct amdgpu_dm_connector *amdgpu_dm_connector =
 			to_amdgpu_dm_connector(connector);
 	struct drm_encoder *encoder;
 	struct edid *edid = amdgpu_dm_connector->edid;
 
-	encoder = helper->best_encoder(connector);
+	encoder = amdgpu_dm_connector_to_encoder(connector);
 
 	if (!edid || !drm_edid_is_valid(edid)) {
 		drm_add_modes_noedid(connector, 640, 480);
-- 
2.19.0.rc1

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