diff --git a/drivers/gpu/drm/vkms/vkms_composer.c b/drivers/gpu/drm/vkms/vkms_composer.c
index 02642801735d..7e01bc39d2a1 100644
--- a/drivers/gpu/drm/vkms/vkms_composer.c
+++ b/drivers/gpu/drm/vkms/vkms_composer.c
@@ -4,6 +4,7 @@
 
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
+#include <drm/drm_fourcc.h>
 #include <drm/drm_gem_framebuffer_helper.h>
 #include <drm/drm_gem_shmem_helper.h>
 #include <drm/drm_vblank.h>
@@ -64,7 +65,17 @@ static u8 blend_channel(u8 src, u8 dst, u8 alpha)
 	return new_color;
 }
 
-static void alpha_blending(const u8 *argb_src, u8 *argb_dst)
+/**
+ * alpha_blend - alpha blending equation
+ * @argb_src: src pixel on premultiplied alpha mode
+ * @argb_dst: dst pixel completely opaque
+ *
+ * blend pixels using premultiplied blend formula. The current DRM assumption
+ * is that pixel color values have been already pre-multiplied with the alpha
+ * channel values. See more drm_plane_create_blend_mode_property(). Also, this
+ * formula assumes a completely opaque background.
+ */
+static void alpha_blend(const u8 *argb_src, u8 *argb_dst)
 {
 	u8 alpha;
 
@@ -72,8 +83,16 @@ static void alpha_blending(const u8 *argb_src, u8 *argb_dst)
 	argb_dst[0] = blend_channel(argb_src[0], argb_dst[0], alpha);
 	argb_dst[1] = blend_channel(argb_src[1], argb_dst[1], alpha);
 	argb_dst[2] = blend_channel(argb_src[2], argb_dst[2], alpha);
-	/* Opaque primary */
-	argb_dst[3] = 0xFF;
+}
+
+/**
+ * x_blend - blending equation that ignores the pixel alpha
+ *
+ * overwrites RGB color value from src pixel to dst pixel.
+ */
+static void x_blend(const u8 *xrgb_src, u8 *xrgb_dst)
+{
+	memcpy(xrgb_dst, xrgb_src, sizeof(u8) * 3);
 }
 
 /**
@@ -82,16 +101,20 @@ static void alpha_blending(const u8 *argb_src, u8 *argb_dst)
  * @vaddr_src: source address
  * @dst_composer: destination framebuffer's metadata
  * @src_composer: source framebuffer's metadata
+ * @pixel_blend: blending equation based on plane format
  *
- * Blend the vaddr_src value with the vaddr_dst value using the pre-multiplied
- * alpha blending equation, since DRM currently assumes that the pixel color
- * values have already been pre-multiplied with the alpha channel values. See
- * more drm_plane_create_blend_mode_property(). This function uses buffer's
- * metadata to locate the new composite values at vaddr_dst.
+ * Blend the vaddr_src value with the vaddr_dst value using a pixel blend
+ * equation according to the plane format and clearing alpha channel to an
+ * completely opaque background. This function uses buffer's metadata to locate
+ * the new composite values at vaddr_dst.
+ *
+ * TODO: completely clear the primary plane (a = 0xff) before starting to blend
+ * pixel color values
  */
 static void blend(void *vaddr_dst, void *vaddr_src,
 		  struct vkms_composer *dst_composer,
-		  struct vkms_composer *src_composer)
+		  struct vkms_composer *src_composer,
+		  void (*pixel_blend)(const u8 *, u8 *))
 {
 	int i, j, j_dst, i_dst;
 	int offset_src, offset_dst;
@@ -119,7 +142,9 @@ static void blend(void *vaddr_dst, void *vaddr_src,
 
 			pixel_src = (u8 *)(vaddr_src + offset_src);
 			pixel_dst = (u8 *)(vaddr_dst + offset_dst);
-			alpha_blending(pixel_src, pixel_dst);
+			pixel_blend(pixel_src, pixel_dst);
+			/* clearing alpha channel (0xff)*/
+			memset(vaddr_dst + offset_dst + 3, 0xff, 1);
 		}
 		i_dst++;
 	}
@@ -131,6 +156,8 @@ static void compose_plane(struct vkms_composer *primary_composer,
 {
 	struct drm_gem_object *plane_obj;
 	struct drm_gem_shmem_object *plane_shmem_obj;
+	struct drm_framebuffer *fb = &plane_composer->fb;
+	void (*pixel_blend)(const u8 *p_src, u8 *p_dst);
 
 	plane_obj = drm_gem_fb_get_obj(&plane_composer->fb, 0);
 	plane_shmem_obj = to_drm_gem_shmem_obj(plane_obj);
@@ -138,8 +165,13 @@ static void compose_plane(struct vkms_composer *primary_composer,
 	if (WARN_ON(!plane_shmem_obj->vaddr))
 		return;
 
-	blend(vaddr_out, plane_shmem_obj->vaddr,
-	      primary_composer, plane_composer);
+	if (fb->format->format == DRM_FORMAT_ARGB8888)
+		pixel_blend = &alpha_blend;
+	else
+		pixel_blend = &x_blend;
+
+	blend(vaddr_out, plane_shmem_obj->vaddr, primary_composer,
+	      plane_composer, pixel_blend);
 }
 
 static int compose_active_planes(void **vaddr_out,
diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c
index 135140f8e87a..da4251aff67f 100644
--- a/drivers/gpu/drm/vkms/vkms_plane.c
+++ b/drivers/gpu/drm/vkms/vkms_plane.c
@@ -16,8 +16,9 @@ static const u32 vkms_formats[] = {
 	DRM_FORMAT_XRGB8888,
 };
 
-static const u32 vkms_cursor_formats[] = {
+static const u32 vkms_plane_formats[] = {
 	DRM_FORMAT_ARGB8888,
+	DRM_FORMAT_XRGB8888
 };
 
 static struct drm_plane_state *
@@ -200,8 +201,8 @@ struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev,
 	int nformats;
 
 	if (type == DRM_PLANE_TYPE_CURSOR) {
-		formats = vkms_cursor_formats;
-		nformats = ARRAY_SIZE(vkms_cursor_formats);
+		formats = vkms_plane_formats;
+		nformats = ARRAY_SIZE(vkms_plane_formats);
 		funcs = &vkms_primary_helper_funcs;
 	} else {
 		formats = vkms_formats;
