drm/i915: Make scaler updates less chatty

It looks to me skl_update_scaler will already log interesting
debug messages when the state transitions or there is an error.

In this case it feels we can remove the two unconditional
debug messages which happen immediately before calling
skl_update_scaler. This way we get rid of the sole debug
message when switching virtual terminals for example.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1479376805-5087-1-git-send-email-tvrtko.ursulin@linux.intel.com

drivers/gpu/drm/i915/intel_display.c

@@ -4719,13 +4719,8 @@ skl_update_scaler(struct intel_crtc_state *crtc_state, bool force_detach,
  */
 int skl_update_scaler_crtc(struct intel_crtc_state *state)
 {
-	struct intel_crtc *intel_crtc = to_intel_crtc(state->base.crtc);
 	const struct drm_display_mode *adjusted_mode = &state->base.adjusted_mode;
 
-	DRM_DEBUG_KMS("Updating scaler for [CRTC:%d:%s] scaler_user index %u.%u\n",
-		      intel_crtc->base.base.id, intel_crtc->base.name,
-		      intel_crtc->pipe, SKL_CRTC_INDEX);
-
 	return skl_update_scaler(state, !state->base.active, SKL_CRTC_INDEX,
 		&state->scaler_state.scaler_id, DRM_ROTATE_0,
 		state->pipe_src_w, state->pipe_src_h,
@@ -4746,7 +4741,6 @@ static int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
 				   struct intel_plane_state *plane_state)
 {
 
-	struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc);
 	struct intel_plane *intel_plane =
 		to_intel_plane(plane_state->base.plane);
 	struct drm_framebuffer *fb = plane_state->base.fb;
@@ -4754,10 +4748,6 @@ static int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
 
 	bool force_detach = !fb || !plane_state->base.visible;
 
-	DRM_DEBUG_KMS("Updating scaler for [PLANE:%d:%s] scaler_user index %u.%u\n",
-		      intel_plane->base.base.id, intel_plane->base.name,
-		      intel_crtc->pipe, drm_plane_index(&intel_plane->base));
-
 	ret = skl_update_scaler(crtc_state, force_detach,
 				drm_plane_index(&intel_plane->base),
 				&plane_state->scaler_id,