drm/i915/display: Add debug print for scaler filter

Add debug print statement to print scaler filter property
value. Since property can be set as either default or integer
scaler; its good if we can get debug print for the same in dmesg
log.

Cc: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220706102240.21414-1-swati2.sharma@intel.com

drivers/gpu/drm/i915/display/intel_crtc_state_dump.c

@@ -134,8 +134,8 @@ static void intel_dump_plane_state(const struct intel_plane_state *plane_state)
 		    plane->base.base.id, plane->base.name,
 		    fb->base.id, fb->width, fb->height, &fb->format->format,
 		    fb->modifier, str_yes_no(plane_state->uapi.visible));
-	drm_dbg_kms(&i915->drm, "\trotation: 0x%x, scaler: %d\n",
-		    plane_state->hw.rotation, plane_state->scaler_id);
+	drm_dbg_kms(&i915->drm, "\trotation: 0x%x, scaler: %d, scaling_filter: %d\n",
+		    plane_state->hw.rotation, plane_state->scaler_id, plane_state->hw.scaling_filter);
 	if (plane_state->uapi.visible)
 		drm_dbg_kms(&i915->drm,
 			    "\tsrc: " DRM_RECT_FP_FMT " dst: " DRM_RECT_FMT "\n",
@@ -262,10 +262,11 @@ void intel_crtc_state_dump(const struct intel_crtc_state *pipe_config,
 
 	if (DISPLAY_VER(i915) >= 9)
 		drm_dbg_kms(&i915->drm,
-			    "num_scalers: %d, scaler_users: 0x%x, scaler_id: %d\n",
+			    "num_scalers: %d, scaler_users: 0x%x, scaler_id: %d, scaling_filter: %d\n",
 			    crtc->num_scalers,
 			    pipe_config->scaler_state.scaler_users,
-			    pipe_config->scaler_state.scaler_id);
+			    pipe_config->scaler_state.scaler_id,
+			    pipe_config->hw.scaling_filter);
 
 	if (HAS_GMCH(i915))
 		drm_dbg_kms(&i915->drm,

drivers/gpu/drm/i915/display/intel_display_debugfs.c

@@ -720,10 +720,11 @@ static void intel_scaler_info(struct seq_file *m, struct intel_crtc *crtc)
 
 	/* Not all platformas have a scaler */
 	if (num_scalers) {
-		seq_printf(m, "\tnum_scalers=%d, scaler_users=%x scaler_id=%d",
+		seq_printf(m, "\tnum_scalers=%d, scaler_users=%x scaler_id=%d scaling_filter=%d",
 			   num_scalers,
 			   crtc_state->scaler_state.scaler_users,
-			   crtc_state->scaler_state.scaler_id);
+			   crtc_state->scaler_state.scaler_id,
+			   crtc_state->hw.scaling_filter);
 
 		for (i = 0; i < num_scalers; i++) {
 			const struct intel_scaler *sc =