diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
index 69c56982e2d0..564bca68f652 100644
--- a/drivers/gpu/drm/drm_atomic_uapi.c
+++ b/drivers/gpu/drm/drm_atomic_uapi.c
@@ -725,6 +725,31 @@ drm_atomic_plane_get_property(struct drm_plane *plane,
 	return 0;
 }
 
+static int drm_atomic_color_set_data_property(struct drm_colorop *colorop,
+		struct drm_colorop_state *state,
+		struct drm_property *property, uint64_t val)
+{
+	ssize_t elem_size = -1;
+	ssize_t size = -1;
+	bool replaced;
+
+
+	switch (colorop->type) {
+	case DRM_COLOROP_CTM_3X4:
+		size = sizeof(struct drm_color_ctm_3x4);
+		break;
+	default:
+		/* should never get here */
+		return -EINVAL;
+	}
+
+	return drm_atomic_replace_property_blob_from_id(colorop->dev,
+					&state->data,
+					val,
+					size,
+					elem_size,
+					&replaced);
+}
 
 static int drm_atomic_colorop_set_property(struct drm_colorop *colorop,
 		struct drm_colorop_state *state, struct drm_file *file_priv,
@@ -734,6 +759,9 @@ static int drm_atomic_colorop_set_property(struct drm_colorop *colorop,
 		state->bypass = val;
 	} else if (property == colorop->curve_1d_type_property) {
 		state->curve_1d_type = val;
+	} else if (property == colorop->data_property) {
+		return drm_atomic_color_set_data_property(colorop,
+					state, property, val);
 	} else {
 		drm_dbg_atomic(colorop->dev,
 			       "[COLOROP:%d:%d] unknown property [PROP:%d:%s]]\n",
@@ -756,6 +784,8 @@ drm_atomic_colorop_get_property(struct drm_colorop *colorop,
 		*val = state->bypass;
 	} else if (property == colorop->curve_1d_type_property) {
 		*val = state->curve_1d_type;
+	} else if (property == colorop->data_property) {
+		*val = (state->data) ? state->data->base.id : 0;
 	} else {
 		return -EINVAL;
 	}
diff --git a/drivers/gpu/drm/drm_colorop.c b/drivers/gpu/drm/drm_colorop.c
index e62acf68bf9e..67e6efc90803 100644
--- a/drivers/gpu/drm/drm_colorop.c
+++ b/drivers/gpu/drm/drm_colorop.c
@@ -34,6 +34,7 @@
 
 static const struct drm_prop_enum_list drm_colorop_type_enum_list[] = {
 	{ DRM_COLOROP_1D_CURVE, "1D Curve" },
+	{ DRM_COLOROP_CTM_3X4, "3x4 Matrix"}
 };
 
 static const struct drm_prop_enum_list drm_colorop_curve_1d_type_enum_list[] = {
@@ -105,6 +106,20 @@ int drm_colorop_init(struct drm_device *dev, struct drm_colorop *colorop,
 				   colorop->curve_1d_type_property,
 				   0);
 
+	/* data */
+	if (type == DRM_COLOROP_CTM_3X4) {
+		prop = drm_property_create(dev, DRM_MODE_PROP_ATOMIC | DRM_MODE_PROP_BLOB,
+					   "DATA", 0);
+		if (!prop)
+			return -ENOMEM;
+
+		colorop->data_property = prop;
+		drm_object_attach_property(&colorop->base,
+					   colorop->data_property,
+					   0);
+	}
+
+	/* next */
 	prop = drm_property_create_object(dev, DRM_MODE_PROP_IMMUTABLE | DRM_MODE_PROP_ATOMIC,
 			"NEXT", DRM_MODE_OBJECT_COLOROP);
 	if (!prop)
@@ -219,6 +234,7 @@ EXPORT_SYMBOL(drm_colorop_reset);
 
 static const char * const colorop_type_name[] = {
 	[DRM_COLOROP_1D_CURVE] = "1D Curve",
+	[DRM_COLOROP_CTM_3X4] = "3x4 Matrix"
 };
 
 static const char * const colorop_curve_1d_type_name[] = {
diff --git a/include/drm/drm_colorop.h b/include/drm/drm_colorop.h
index 13acc9a6ac38..faca6eba10e1 100644
--- a/include/drm/drm_colorop.h
+++ b/include/drm/drm_colorop.h
@@ -59,6 +59,14 @@ struct drm_colorop_state {
 	 */
 	enum drm_colorop_curve_1d_type curve_1d_type;
 
+	/**
+	 * @data:
+	 *
+	 * Data blob for any TYPE that requires such a blob. The
+	 * interpretation of the blob is TYPE-specific.
+	 */
+	struct drm_property_blob *data;
+
 	/** @state: backpointer to global drm_atomic_state */
 	struct drm_atomic_state *state;
 };
@@ -166,6 +174,17 @@ struct drm_colorop {
 	 */
 	struct drm_property *curve_1d_type_property;
 
+	/**
+	 * @data:
+	 *
+	 * blob property for any TYPE that requires a blob of data,
+	 * such as 1DLUT, CTM, 3DLUT, etc.
+	 *
+	 * The way this blob is interpreted depends on the TYPE of
+	 * this
+	 */
+	struct drm_property *data_property;
+
 	/**
 	 * @next_property
 	 *
diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h
index 0ebf0f480dc8..b5d4dd5660d9 100644
--- a/include/uapi/drm/drm_mode.h
+++ b/include/uapi/drm/drm_mode.h
@@ -847,6 +847,22 @@ struct drm_color_ctm {
 	__u64 matrix[9];
 };
 
+struct drm_color_ctm_3x4 {
+	/*
+	 * Conversion matrix with 3x4 dimensions in S31.32 sign-magnitude
+	 * (not two's complement!) format.
+	 *
+	 * TODO what's the format?
+	 *
+	 * out   matrix          in
+	 * |R|   |0  1  2  3 |   | R |
+	 * |G| = |4  5  6  7 | x | G |
+	 * |B|   |8  9  10 12|   | B |
+	 *                       |1.0|
+	 */
+	__u64 matrix[12];
+};
+
 struct drm_color_lut {
 	/*
 	 * Values are mapped linearly to 0.0 - 1.0 range, with 0x0 == 0.0 and
@@ -859,7 +875,8 @@ struct drm_color_lut {
 };
 
 enum drm_colorop_type {
-	DRM_COLOROP_1D_CURVE
+	DRM_COLOROP_1D_CURVE,
+	DRM_COLOROP_CTM_3X4,
 };
 
 /**
