drm/i915: Use atomic state in intel_ddi_crtc_get_new_encoder()

Instead of using connector->new_encoder, get the same information from
the pipe_config, thus making the function ready for the atomic
conversion.
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_ddi.c

@@ -492,18 +492,24 @@ intel_ddi_get_crtc_encoder(struct drm_crtc *crtc)
 }
 
 static struct intel_encoder *
-intel_ddi_get_crtc_new_encoder(struct intel_crtc *crtc)
+intel_ddi_get_crtc_new_encoder(struct intel_crtc_state *crtc_state)
 {
-	struct drm_device *dev = crtc->base.dev;
-	struct intel_encoder *intel_encoder, *ret = NULL;
+	struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
+	struct intel_encoder *ret = NULL;
+	struct drm_atomic_state *state;
 	int num_encoders = 0;
+	int i;
 
-	for_each_intel_encoder(dev, intel_encoder) {
-		if (intel_encoder->new_crtc == crtc) {
-			ret = intel_encoder;
+	state = crtc_state->base.state;
+
+	for (i = 0; i < state->num_connector; i++) {
+		if (!state->connectors[i] ||
+		    state->connector_states[i]->crtc != crtc_state->base.crtc)
+			continue;
+
+		ret = to_intel_encoder(state->connector_states[i]->best_encoder);
 		num_encoders++;
 	}
-	}
 
 	WARN(num_encoders != 1, "%d encoders on crtc for pipe %c\n", num_encoders,
 	     pipe_name(crtc->pipe));
@@ -1216,7 +1222,7 @@ bool intel_ddi_pll_select(struct intel_crtc *intel_crtc,
 {
 	struct drm_device *dev = intel_crtc->base.dev;
 	struct intel_encoder *intel_encoder =
-		intel_ddi_get_crtc_new_encoder(intel_crtc);
+		intel_ddi_get_crtc_new_encoder(crtc_state);
 	int clock = crtc_state->port_clock;
 
 	if (IS_SKYLAKE(dev))