drm/malidp: Fix smart layer when doing pm_suspend/resume

Smart layer enable rectangles is set to 1 when the driver is probed,
however when doing pm_suspend the value is lost and it's not set again
making the SMART_LAYER unusable, fix that by initializing the number
of rectangles everytime we do a plane update.

Signed-off-by: Alexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>

drivers/gpu/drm/arm/malidp_planes.c

@@ -366,10 +366,17 @@ static void malidp_de_plane_update(struct drm_plane *plane,
 			LAYER_V_VAL(plane->state->crtc_y),
 			mp->layer->base + MALIDP_LAYER_OFFSET);
 
-	if (mp->layer->id == DE_SMART)
+	if (mp->layer->id == DE_SMART) {
+		/*
+		 * Enable the first rectangle in the SMART layer to be
+		 * able to use it as a drm plane.
+		 */
+		malidp_hw_write(mp->hwdev, 1,
+				mp->layer->base + MALIDP550_LS_ENABLE);
 		malidp_hw_write(mp->hwdev,
 				LAYER_H_VAL(src_w) | LAYER_V_VAL(src_h),
 				mp->layer->base + MALIDP550_LS_R1_IN_SIZE);
+	}
 
 	/* first clear the rotation bits */
 	val = malidp_hw_read(mp->hwdev, mp->layer->base + MALIDP_LAYER_CONTROL);
@@ -484,12 +491,6 @@ int malidp_de_planes_init(struct drm_device *drm)
 		plane->layer = &map->layers[i];
 
 		if (id == DE_SMART) {
-			/*
-			 * Enable the first rectangle in the SMART layer to be
-			 * able to use it as a drm plane.
-			 */
-			malidp_hw_write(malidp->dev, 1,
-					plane->layer->base + MALIDP550_LS_ENABLE);
 			/* Skip the features which the SMART layer doesn't have. */
 			continue;
 		}