From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out30-110.freemail.mail.aliyun.com (out30-110.freemail.mail.aliyun.com [115.124.30.110]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 30DC0367B9F for ; Tue, 1 Sep 2026 06:50:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=115.124.30.110 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788245458; cv=none; b=CqwitE2+Hr/KDz3DittF7G9Mm7DmJgUhWGWGX0OBSxKyo7oep6IrvaCz2/iLqAj0G+53234/MSlF545Gp4KA4bX0M1iVAgYNPUlBnVCHlaSoF6wL5vyoy9eOijnviyx51Hkbf4a09kv0DIXLd1Vu915FWN0sz3vHUAP0RK5bmII= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788245458; c=relaxed/simple; bh=3+oQgQjjB+apiqdYH5utkTP14/+l6+v8Ek2uXcY2qwY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ToXFn56/+Pi8bv8O965gZDWJ3hwzL7RqeCVqn6F3HoPIHs3DZAdjfpt5WTLWNmUvRQ/TuTbUBTiwfDFw55rKKCY3Ckf3Rz1nz/6mDB0ayHLpur93/1WsWuIQsqxmgakvY0w2w4VWISSrPnP2DQaMP77oob/p7DSvz5yuez84yto= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com; spf=pass smtp.mailfrom=linux.alibaba.com; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b=L9UhtQAW; arc=none smtp.client-ip=115.124.30.110 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.alibaba.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.alibaba.com header.i=@linux.alibaba.com header.b="L9UhtQAW" DKIM-Signature:v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.alibaba.com; s=default; t=1788245452; h=From:To:Subject:Date:Message-ID:MIME-Version; bh=bABm3+xrFKtz5tDE4aE1SofEi8/oUAjtsC5NdfwbKhk=; b=L9UhtQAWrUCM6knl5e/lD9GaPqoI6ZiEdIDtFqJEBucbSWy1AeGr4bedfNvxwwcq+2ANANSJ7EvBgaVNsMhktpfl6PsngfkZqstCd1+gfTBvgUxu5/+mtFzQ/LG8BlaciS5ub9eCo9U5TwvAv2JriTU2QWBaCB8D0fkwU+HA0Zo= X-Alimail-AntiSpam:AC=PASS;BC=-1|-1;BR=01201311R141e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=maildocker-contentspam033037026112;MF=qinyuntan@linux.alibaba.com;NM=1;PH=DS;RN=17;SR=0;TI=SMTPD_---0XA4XWTM_1788245450; Received: from banye.tbsite.net(mailfrom:qinyuntan@linux.alibaba.com fp:SMTPD_---0XA4XWTM_1788245450 cluster:ay36) by smtp.aliyun-inc.com; Tue, 01 Sep 2026 14:50:51 +0800 From: Qinyun Tan To: dri-devel@lists.freedesktop.org Cc: tzimmermann@suse.de, airlied@redhat.com, jfalempe@redhat.com, kraxel@redhat.com, dmitry.osipenko@collabora.com, hansg@kernel.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, simona@ffwll.ch, leandro.ribeiro@collabora.com, daniels@collabora.com, pekka.paalanen@collabora.com, virtualization@lists.linux.dev, spice-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Qinyun Tan Subject: [PATCH 2/4] drm/qxl: create blend mode property on primary and cursor planes Date: Tue, 1 Sep 2026 14:50:43 +0800 Message-ID: <20260901065045.1152136-3-qinyuntan@linux.alibaba.com> X-Mailer: git-send-email 2.43.7 In-Reply-To: <20260901065045.1152136-1-qinyuntan@linux.alibaba.com> References: <20260901065045.1152136-1-qinyuntan@linux.alibaba.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Since commit 860e748bddcc ("drm: ensure blend mode supported if pixel format with alpha exposed"), drm_mode_config_validate() warns when a plane exposes an alpha pixel format but not the "pixel blend mode" property. Both the qxl primary and cursor planes expose ARGB8888 and trip this on driver load. The planes have always blended with pre-multiplied alpha and userspace assumes that blend mode when the property is not attached. Expose a "pixel blend mode" property advertising only DRM_MODE_BLEND_PREMULTI to make the existing semantics explicit and silence the warning. No functional change. Fixes: 860e748bddcc ("drm: ensure blend mode supported if pixel format with alpha exposed") Signed-off-by: Qinyun Tan --- drivers/gpu/drm/qxl/qxl_display.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c index 7f4178800afd7..0cd1456cca347 100644 --- a/drivers/gpu/drm/qxl/qxl_display.c +++ b/drivers/gpu/drm/qxl/qxl_display.c @@ -30,6 +30,7 @@ #include #include #include +#include #include #include #include @@ -993,6 +994,9 @@ static struct drm_plane *qxl_create_plane(struct qxl_device *qdev, drm_plane_helper_add(plane, helper_funcs); + drm_plane_create_blend_mode_property(plane, + BIT(DRM_MODE_BLEND_PREMULTI)); + return plane; free_plane: -- 2.43.7