Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 617 insertions, 0 deletions

diff --git a/drivers/gpu/drm/drm_blend.c b/drivers/gpu/drm/drm_blend.c
new file mode 100644
index 0000000000..6e74de8334
--- /dev/null
+++ b/drivers/gpu/drm/drm_blend.c
@@ -0,0 +1,617 @@
+/*
+ * Copyright (C) 2016 Samsung Electronics Co.Ltd
+ * Authors:
+ *	Marek Szyprowski <m.szyprowski@samsung.com>
+ *
+ * DRM core plane blending related functions
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <linux/export.h>
+#include <linux/slab.h>
+#include <linux/sort.h>
+
+#include <drm/drm_atomic.h>
+#include <drm/drm_blend.h>
+#include <drm/drm_device.h>
+#include <drm/drm_print.h>
+
+#include "drm_crtc_internal.h"
+
+/**
+ * DOC: overview
+ *
+ * The basic plane composition model supported by standard plane properties only
+ * has a source rectangle (in logical pixels within the &drm_framebuffer), with
+ * sub-pixel accuracy, which is scaled up to a pixel-aligned destination
+ * rectangle in the visible area of a &drm_crtc. The visible area of a CRTC is
+ * defined by the horizontal and vertical visible pixels (stored in @hdisplay
+ * and @vdisplay) of the requested mode (stored in &drm_crtc_state.mode). These
+ * two rectangles are both stored in the &drm_plane_state.
+ *
+ * For the atomic ioctl the following standard (atomic) properties on the plane object
+ * encode the basic plane composition model:
+ *
+ * SRC_X:
+ * 	X coordinate offset for the source rectangle within the
+ * 	&drm_framebuffer, in 16.16 fixed point. Must be positive.
+ * SRC_Y:
+ * 	Y coordinate offset for the source rectangle within the
+ * 	&drm_framebuffer, in 16.16 fixed point. Must be positive.
+ * SRC_W:
+ * 	Width for the source rectangle within the &drm_framebuffer, in 16.16
+ * 	fixed point. SRC_X plus SRC_W must be within the width of the source
+ * 	framebuffer. Must be positive.
+ * SRC_H:
+ * 	Height for the source rectangle within the &drm_framebuffer, in 16.16
+ * 	fixed point. SRC_Y plus SRC_H must be within the height of the source
+ * 	framebuffer. Must be positive.
+ * CRTC_X:
+ * 	X coordinate offset for the destination rectangle. Can be negative.
+ * CRTC_Y:
+ * 	Y coordinate offset for the destination rectangle. Can be negative.
+ * CRTC_W:
+ * 	Width for the destination rectangle. CRTC_X plus CRTC_W can extend past
+ * 	the currently visible horizontal area of the &drm_crtc.
+ * CRTC_H:
+ * 	Height for the destination rectangle. CRTC_Y plus CRTC_H can extend past
+ * 	the currently visible vertical area of the &drm_crtc.
+ * FB_ID:
+ * 	Mode object ID of the &drm_framebuffer this plane should scan out.
+ * CRTC_ID:
+ * 	Mode object ID of the &drm_crtc this plane should be connected to.
+ *
+ * Note that the source rectangle must fully lie within the bounds of the
+ * &drm_framebuffer. The destination rectangle can lie outside of the visible
+ * area of the current mode of the CRTC. It must be appropriately clipped by the
+ * driver, which can be done by calling drm_plane_helper_check_update(). Drivers
+ * are also allowed to round the subpixel sampling positions appropriately, but
+ * only to the next full pixel. No pixel outside of the source rectangle may
+ * ever be sampled, which is important when applying more sophisticated
+ * filtering than just a bilinear one when scaling. The filtering mode when
+ * scaling is unspecified.
+ *
+ * On top of this basic transformation additional properties can be exposed by
+ * the driver:
+ *
+ * alpha:
+ * 	Alpha is setup with drm_plane_create_alpha_property(). It controls the
+ * 	plane-wide opacity, from transparent (0) to opaque (0xffff). It can be
+ * 	combined with pixel alpha.
+ *	The pixel values in the framebuffers are expected to not be
+ *	pre-multiplied by the global alpha associated to the plane.
+ *
+ * rotation:
+ *	Rotation is set up with drm_plane_create_rotation_property(). It adds a
+ *	rotation and reflection step between the source and destination rectangles.
+ *	Without this property the rectangle is only scaled, but not rotated or
+ *	reflected.
+ *
+ *	Possbile values:
+ *
+ *	"rotate-<degrees>":
+ *		Signals that a drm plane is rotated <degrees> degrees in counter
+ *		clockwise direction.
+ *
+ *	"reflect-<axis>":
+ *		Signals that the contents of a drm plane is reflected along the
+ *		<axis> axis, in the same way as mirroring.
+ *
+ *	reflect-x::
+ *
+ *			|o |    | o|
+ *			|  | -> |  |
+ *			| v|    |v |
+ *
+ *	reflect-y::
+ *
+ *			|o |    | ^|
+ *			|  | -> |  |
+ *			| v|    |o |
+ *
+ * zpos:
+ *	Z position is set up with drm_plane_create_zpos_immutable_property() and
+ *	drm_plane_create_zpos_property(). It controls the visibility of overlapping
+ *	planes. Without this property the primary plane is always below the cursor
+ *	plane, and ordering between all other planes is undefined. The positive
+ *	Z axis points towards the user, i.e. planes with lower Z position values
+ *	are underneath planes with higher Z position values. Two planes with the
+ *	same Z position value have undefined ordering. Note that the Z position
+ *	value can also be immutable, to inform userspace about the hard-coded
+ *	stacking of planes, see drm_plane_create_zpos_immutable_property(). If
+ *	any plane has a zpos property (either mutable or immutable), then all
+ *	planes shall have a zpos property.
+ *
+ * pixel blend mode:
+ *	Pixel blend mode is set up with drm_plane_create_blend_mode_property().
+ *	It adds a blend mode for alpha blending equation selection, describing
+ *	how the pixels from the current plane are composited with the
+ *	background.
+ *
+ *	 Three alpha blending equations are defined:
+ *
+ *	 "None":
+ *		 Blend formula that ignores the pixel alpha::
+ *
+ *			 out.rgb = plane_alpha * fg.rgb +
+ *				 (1 - plane_alpha) * bg.rgb
+ *
+ *	 "Pre-multiplied":
+ *		 Blend formula that assumes the pixel color values
+ *		 have been already pre-multiplied with the alpha
+ *		 channel values::
+ *
+ *			 out.rgb = plane_alpha * fg.rgb +
+ *				 (1 - (plane_alpha * fg.alpha)) * bg.rgb
+ *
+ *	 "Coverage":
+ *		 Blend formula that assumes the pixel color values have not
+ *		 been pre-multiplied and will do so when blending them to the
+ *		 background color values::
+ *
+ *			 out.rgb = plane_alpha * fg.alpha * fg.rgb +
+ *				 (1 - (plane_alpha * fg.alpha)) * bg.rgb
+ *
+ *	 Using the following symbols:
+ *
+ *	 "fg.rgb":
+ *		 Each of the RGB component values from the plane's pixel
+ *	 "fg.alpha":
+ *		 Alpha component value from the plane's pixel. If the plane's
+ *		 pixel format has no alpha component, then this is assumed to be
+ *		 1.0. In these cases, this property has no effect, as all three
+ *		 equations become equivalent.
+ *	 "bg.rgb":
+ *		 Each of the RGB component values from the background
+ *	 "plane_alpha":
+ *		 Plane alpha value set by the plane "alpha" property. If the
+ *		 plane does not expose the "alpha" property, then this is
+ *		 assumed to be 1.0
+ *
+ * Note that all the property extensions described here apply either to the
+ * plane or the CRTC (e.g. for the background color, which currently is not
+ * exposed and assumed to be black).
+ *
+ * SCALING_FILTER:
+ *     Indicates scaling filter to be used for plane scaler
+ *
+ *     The value of this property can be one of the following:
+ *
+ *     Default:
+ *             Driver's default scaling filter
+ *     Nearest Neighbor:
+ *             Nearest Neighbor scaling filter
+ *
+ * Drivers can set up this property for a plane by calling
+ * drm_plane_create_scaling_filter_property
+ */
+
+/**
+ * drm_plane_create_alpha_property - create a new alpha property
+ * @plane: drm plane
+ *
+ * This function creates a generic, mutable, alpha property and enables support
+ * for it in the DRM core. It is attached to @plane.
+ *
+ * The alpha property will be allowed to be within the bounds of 0
+ * (transparent) to 0xffff (opaque).
+ *
+ * Returns:
+ * 0 on success, negative error code on failure.
+ */
+int drm_plane_create_alpha_property(struct drm_plane *plane)
+{
+	struct drm_property *prop;
+
+	prop = drm_property_create_range(plane->dev, 0, "alpha",
+					 0, DRM_BLEND_ALPHA_OPAQUE);
+	if (!prop)
+		return -ENOMEM;
+
+	drm_object_attach_property(&plane->base, prop, DRM_BLEND_ALPHA_OPAQUE);
+	plane->alpha_property = prop;
+
+	if (plane->state)
+		plane->state->alpha = DRM_BLEND_ALPHA_OPAQUE;
+
+	return 0;
+}
+EXPORT_SYMBOL(drm_plane_create_alpha_property);
+
+/**
+ * drm_plane_create_rotation_property - create a new rotation property
+ * @plane: drm plane
+ * @rotation: initial value of the rotation property
+ * @supported_rotations: bitmask of supported rotations and reflections
+ *
+ * This creates a new property with the selected support for transformations.
+ *
+ * Since a rotation by 180° degress is the same as reflecting both along the x
+ * and the y axis the rotation property is somewhat redundant. Drivers can use
+ * drm_rotation_simplify() to normalize values of this property.
+ *
+ * The property exposed to userspace is a bitmask property (see
+ * drm_property_create_bitmask()) called "rotation" and has the following
+ * bitmask enumaration values:
+ *
+ * DRM_MODE_ROTATE_0:
+ * 	"rotate-0"
+ * DRM_MODE_ROTATE_90:
+ * 	"rotate-90"
+ * DRM_MODE_ROTATE_180:
+ * 	"rotate-180"
+ * DRM_MODE_ROTATE_270:
+ * 	"rotate-270"
+ * DRM_MODE_REFLECT_X:
+ * 	"reflect-x"
+ * DRM_MODE_REFLECT_Y:
+ * 	"reflect-y"
+ *
+ * Rotation is the specified amount in degrees in counter clockwise direction,
+ * the X and Y axis are within the source rectangle, i.e.  the X/Y axis before
+ * rotation. After reflection, the rotation is applied to the image sampled from
+ * the source rectangle, before scaling it to fit the destination rectangle.
+ */
+int drm_plane_create_rotation_property(struct drm_plane *plane,
+				       unsigned int rotation,
+				       unsigned int supported_rotations)
+{
+	static const struct drm_prop_enum_list props[] = {
+		{ __builtin_ffs(DRM_MODE_ROTATE_0) - 1,   "rotate-0" },
+		{ __builtin_ffs(DRM_MODE_ROTATE_90) - 1,  "rotate-90" },
+		{ __builtin_ffs(DRM_MODE_ROTATE_180) - 1, "rotate-180" },
+		{ __builtin_ffs(DRM_MODE_ROTATE_270) - 1, "rotate-270" },
+		{ __builtin_ffs(DRM_MODE_REFLECT_X) - 1,  "reflect-x" },
+		{ __builtin_ffs(DRM_MODE_REFLECT_Y) - 1,  "reflect-y" },
+	};
+	struct drm_property *prop;
+
+	WARN_ON((supported_rotations & DRM_MODE_ROTATE_MASK) == 0);
+	WARN_ON(!is_power_of_2(rotation & DRM_MODE_ROTATE_MASK));
+	WARN_ON(rotation & ~supported_rotations);
+
+	prop = drm_property_create_bitmask(plane->dev, 0, "rotation",
+					   props, ARRAY_SIZE(props),
+					   supported_rotations);
+	if (!prop)
+		return -ENOMEM;
+
+	drm_object_attach_property(&plane->base, prop, rotation);
+
+	if (plane->state)
+		plane->state->rotation = rotation;
+
+	plane->rotation_property = prop;
+
+	return 0;
+}
+EXPORT_SYMBOL(drm_plane_create_rotation_property);
+
+/**
+ * drm_rotation_simplify() - Try to simplify the rotation
+ * @rotation: Rotation to be simplified
+ * @supported_rotations: Supported rotations
+ *
+ * Attempt to simplify the rotation to a form that is supported.
+ * Eg. if the hardware supports everything except DRM_MODE_REFLECT_X
+ * one could call this function like this:
+ *
+ * drm_rotation_simplify(rotation, DRM_MODE_ROTATE_0 |
+ *                       DRM_MODE_ROTATE_90 | DRM_MODE_ROTATE_180 |
+ *                       DRM_MODE_ROTATE_270 | DRM_MODE_REFLECT_Y);
+ *
+ * to eliminate the DRM_MODE_REFLECT_X flag. Depending on what kind of
+ * transforms the hardware supports, this function may not
+ * be able to produce a supported transform, so the caller should
+ * check the result afterwards.
+ */
+unsigned int drm_rotation_simplify(unsigned int rotation,
+				   unsigned int supported_rotations)
+{
+	if (rotation & ~supported_rotations) {
+		rotation ^= DRM_MODE_REFLECT_X | DRM_MODE_REFLECT_Y;
+		rotation = (rotation & DRM_MODE_REFLECT_MASK) |
+			    BIT((ffs(rotation & DRM_MODE_ROTATE_MASK) + 1)
+			    % 4);
+	}
+
+	return rotation;
+}
+EXPORT_SYMBOL(drm_rotation_simplify);
+
+/**
+ * drm_plane_create_zpos_property - create mutable zpos property
+ * @plane: drm plane
+ * @zpos: initial value of zpos property
+ * @min: minimal possible value of zpos property
+ * @max: maximal possible value of zpos property
+ *
+ * This function initializes generic mutable zpos property and enables support
+ * for it in drm core. Drivers can then attach this property to planes to enable
+ * support for configurable planes arrangement during blending operation.
+ * Drivers that attach a mutable zpos property to any plane should call the
+ * drm_atomic_normalize_zpos() helper during their implementation of
+ * &drm_mode_config_funcs.atomic_check(), which will update the normalized zpos
+ * values and store them in &drm_plane_state.normalized_zpos. Usually min
+ * should be set to 0 and max to maximal number of planes for given crtc - 1.
+ *
+ * If zpos of some planes cannot be changed (like fixed background or
+ * cursor/topmost planes), drivers shall adjust the min/max values and assign
+ * those planes immutable zpos properties with lower or higher values (for more
+ * information, see drm_plane_create_zpos_immutable_property() function). In such
+ * case drivers shall also assign proper initial zpos values for all planes in
+ * its plane_reset() callback, so the planes will be always sorted properly.
+ *
+ * See also drm_atomic_normalize_zpos().
+ *
+ * The property exposed to userspace is called "zpos".
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_plane_create_zpos_property(struct drm_plane *plane,
+				   unsigned int zpos,
+				   unsigned int min, unsigned int max)
+{
+	struct drm_property *prop;
+
+	prop = drm_property_create_range(plane->dev, 0, "zpos", min, max);
+	if (!prop)
+		return -ENOMEM;
+
+	drm_object_attach_property(&plane->base, prop, zpos);
+
+	plane->zpos_property = prop;
+
+	if (plane->state) {
+		plane->state->zpos = zpos;
+		plane->state->normalized_zpos = zpos;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(drm_plane_create_zpos_property);
+
+/**
+ * drm_plane_create_zpos_immutable_property - create immuttable zpos property
+ * @plane: drm plane
+ * @zpos: value of zpos property
+ *
+ * This function initializes generic immutable zpos property and enables
+ * support for it in drm core. Using this property driver lets userspace
+ * to get the arrangement of the planes for blending operation and notifies
+ * it that the hardware (or driver) doesn't support changing of the planes'
+ * order. For mutable zpos see drm_plane_create_zpos_property().
+ *
+ * The property exposed to userspace is called "zpos".
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_plane_create_zpos_immutable_property(struct drm_plane *plane,
+					     unsigned int zpos)
+{
+	struct drm_property *prop;
+
+	prop = drm_property_create_range(plane->dev, DRM_MODE_PROP_IMMUTABLE,
+					 "zpos", zpos, zpos);
+	if (!prop)
+		return -ENOMEM;
+
+	drm_object_attach_property(&plane->base, prop, zpos);
+
+	plane->zpos_property = prop;
+
+	if (plane->state) {
+		plane->state->zpos = zpos;
+		plane->state->normalized_zpos = zpos;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL(drm_plane_create_zpos_immutable_property);
+
+static int drm_atomic_state_zpos_cmp(const void *a, const void *b)
+{
+	const struct drm_plane_state *sa = *(struct drm_plane_state **)a;
+	const struct drm_plane_state *sb = *(struct drm_plane_state **)b;
+
+	if (sa->zpos != sb->zpos)
+		return sa->zpos - sb->zpos;
+	else
+		return sa->plane->base.id - sb->plane->base.id;
+}
+
+static int drm_atomic_helper_crtc_normalize_zpos(struct drm_crtc *crtc,
+					  struct drm_crtc_state *crtc_state)
+{
+	struct drm_atomic_state *state = crtc_state->state;
+	struct drm_device *dev = crtc->dev;
+	int total_planes = dev->mode_config.num_total_plane;
+	struct drm_plane_state **states;
+	struct drm_plane *plane;
+	int i, n = 0;
+	int ret = 0;
+
+	drm_dbg_atomic(dev, "[CRTC:%d:%s] calculating normalized zpos values\n",
+		       crtc->base.id, crtc->name);
+
+	states = kmalloc_array(total_planes, sizeof(*states), GFP_KERNEL);
+	if (!states)
+		return -ENOMEM;
+
+	/*
+	 * Normalization process might create new states for planes which
+	 * normalized_zpos has to be recalculated.
+	 */
+	drm_for_each_plane_mask(plane, dev, crtc_state->plane_mask) {
+		struct drm_plane_state *plane_state =
+			drm_atomic_get_plane_state(state, plane);
+		if (IS_ERR(plane_state)) {
+			ret = PTR_ERR(plane_state);
+			goto done;
+		}
+		states[n++] = plane_state;
+		drm_dbg_atomic(dev, "[PLANE:%d:%s] processing zpos value %d\n",
+			       plane->base.id, plane->name, plane_state->zpos);
+	}
+
+	sort(states, n, sizeof(*states), drm_atomic_state_zpos_cmp, NULL);
+
+	for (i = 0; i < n; i++) {
+		plane = states[i]->plane;
+
+		states[i]->normalized_zpos = i;
+		drm_dbg_atomic(dev, "[PLANE:%d:%s] normalized zpos value %d\n",
+			       plane->base.id, plane->name, i);
+	}
+	crtc_state->zpos_changed = true;
+
+done:
+	kfree(states);
+	return ret;
+}
+
+/**
+ * drm_atomic_normalize_zpos - calculate normalized zpos values for all crtcs
+ * @dev: DRM device
+ * @state: atomic state of DRM device
+ *
+ * This function calculates normalized zpos value for all modified planes in
+ * the provided atomic state of DRM device.
+ *
+ * For every CRTC this function checks new states of all planes assigned to
+ * it and calculates normalized zpos value for these planes. Planes are compared
+ * first by their zpos values, then by plane id (if zpos is equal). The plane
+ * with lowest zpos value is at the bottom. The &drm_plane_state.normalized_zpos
+ * is then filled with unique values from 0 to number of active planes in crtc
+ * minus one.
+ *
+ * RETURNS
+ * Zero for success or -errno
+ */
+int drm_atomic_normalize_zpos(struct drm_device *dev,
+			      struct drm_atomic_state *state)
+{
+	struct drm_crtc *crtc;
+	struct drm_crtc_state *old_crtc_state, *new_crtc_state;
+	struct drm_plane *plane;
+	struct drm_plane_state *old_plane_state, *new_plane_state;
+	int i, ret = 0;
+
+	for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) {
+		crtc = new_plane_state->crtc;
+		if (!crtc)
+			continue;
+		if (old_plane_state->zpos != new_plane_state->zpos) {
+			new_crtc_state = drm_atomic_get_new_crtc_state(state, crtc);
+			new_crtc_state->zpos_changed = true;
+		}
+	}
+
+	for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
+		if (old_crtc_state->plane_mask != new_crtc_state->plane_mask ||
+		    new_crtc_state->zpos_changed) {
+			ret = drm_atomic_helper_crtc_normalize_zpos(crtc,
+								    new_crtc_state);
+			if (ret)
+				return ret;
+		}
+	}
+	return 0;
+}
+EXPORT_SYMBOL(drm_atomic_normalize_zpos);
+
+/**
+ * drm_plane_create_blend_mode_property - create a new blend mode property
+ * @plane: drm plane
+ * @supported_modes: bitmask of supported modes, must include
+ *		     BIT(DRM_MODE_BLEND_PREMULTI). Current DRM assumption is
+ *		     that alpha is premultiplied, and old userspace can break if
+ *		     the property defaults to anything else.
+ *
+ * This creates a new property describing the blend mode.
+ *
+ * The property exposed to userspace is an enumeration property (see
+ * drm_property_create_enum()) called "pixel blend mode" and has the
+ * following enumeration values:
+ *
+ * "None":
+ *	Blend formula that ignores the pixel alpha.
+ *
+ * "Pre-multiplied":
+ *	Blend formula that assumes the pixel color values have been already
+ *	pre-multiplied with the alpha channel values.
+ *
+ * "Coverage":
+ *	Blend formula that assumes the pixel color values have not been
+ *	pre-multiplied and will do so when blending them to the background color
+ *	values.
+ *
+ * RETURNS:
+ * Zero for success or -errno
+ */
+int drm_plane_create_blend_mode_property(struct drm_plane *plane,
+					 unsigned int supported_modes)
+{
+	struct drm_device *dev = plane->dev;
+	struct drm_property *prop;
+	static const struct drm_prop_enum_list props[] = {
+		{ DRM_MODE_BLEND_PIXEL_NONE, "None" },
+		{ DRM_MODE_BLEND_PREMULTI, "Pre-multiplied" },
+		{ DRM_MODE_BLEND_COVERAGE, "Coverage" },
+	};
+	unsigned int valid_mode_mask = BIT(DRM_MODE_BLEND_PIXEL_NONE) |
+				       BIT(DRM_MODE_BLEND_PREMULTI)   |
+				       BIT(DRM_MODE_BLEND_COVERAGE);
+	int i;
+
+	if (WARN_ON((supported_modes & ~valid_mode_mask) ||
+		    ((supported_modes & BIT(DRM_MODE_BLEND_PREMULTI)) == 0)))
+		return -EINVAL;
+
+	prop = drm_property_create(dev, DRM_MODE_PROP_ENUM,
+				   "pixel blend mode",
+				   hweight32(supported_modes));
+	if (!prop)
+		return -ENOMEM;
+
+	for (i = 0; i < ARRAY_SIZE(props); i++) {
+		int ret;
+
+		if (!(BIT(props[i].type) & supported_modes))
+			continue;
+
+		ret = drm_property_add_enum(prop, props[i].type,
+					    props[i].name);
+
+		if (ret) {
+			drm_property_destroy(dev, prop);
+
+			return ret;
+		}
+	}
+
+	drm_object_attach_property(&plane->base, prop, DRM_MODE_BLEND_PREMULTI);
+	plane->blend_mode_property = prop;
+
+	return 0;
+}
+EXPORT_SYMBOL(drm_plane_create_blend_mode_property);