[PATCH v2] drm: rockchip: add drm_plane_create_blend_mode_property

[Johan Jonker via B4 Relay]

From: Johan Jonker <jbx6244 at gmail.com>

A validate_blend_mode_for_alpha_formats() function was added that
fills the kernel log with warnings for Rockchip VOP version 1 SoCs.
Add a drm_plane_create_blend_mode_property() function as fix.
VOP version 1 doesn't support blending with a pixel alpha background
layer, only with a constant alpha. Advertise blending capability with
DRM_MODE_BLEND_PIXEL_NONE.

Signed-off-by: Johan Jonker <jbx6244 at gmail.com>
---

Changed V2:
Add comment line
---
 drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 0090d8ff0c79..0bc5b606f021 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -1850,6 +1850,8 @@ static void vop_plane_add_properties(struct drm_plane *plane,
 	if (flags)
 		drm_plane_create_rotation_property(plane, DRM_MODE_ROTATE_0,
 						   DRM_MODE_ROTATE_0 | flags);
+	drm_plane_create_blend_mode_property(plane,
+					     BIT(DRM_MODE_BLEND_PIXEL_NONE));
 }
 
 static int vop_create_crtc(struct vop *vop)

---
base-commit: 9d80aa4617b32f5054c5aa471d06b66704854935
change-id: 20260909-blend-c89d2c9f6984

Best regards,
-- 
Johan Jonker <jbx6244 at gmail.com>