From: Johan Jonker via B4 Relay <devnull+jbx6244.gmail.com@kernel.org>
To: "Sandy Huang" <hjc@rock-chips.com>,
"Heiko Stübner" <heiko@sntech.de>,
"Andy Yan" <andy.yan@rock-chips.com>,
"Maarten Lankhorst" <maarten.lankhorst@linux.intel.com>,
"Maxime Ripard" <mripard@kernel.org>,
"Thomas Zimmermann" <tzimmermann@suse.de>,
"David Airlie" <airlied@gmail.com>,
"Simona Vetter" <simona@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org,
linux-rockchip@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Johan Jonker <jbx6244@gmail.com>
Subject: [PATCH v2] drm: rockchip: add drm_plane_create_blend_mode_property
Date: Wed, 09 Sep 2026 23:20:54 +0200 [thread overview]
Message-ID: <20260909-blend-v2-1-37e27af4faee@gmail.com> (raw)
From: Johan Jonker <jbx6244@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@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@gmail.com>
reply other threads:[~2026-09-09 21:21 UTC|newest]
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