linux-kernel - [PATCH v2 0/4] drm: zynqmp: Make the video plane primary

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Message-Id: <20260106164247.472544-1-sean.anderson@linux.dev>
Date: Tue,  6 Jan 2026 11:42:43 -0500
From: Sean Anderson <sean.anderson@...ux.dev>
To: Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Tomi Valkeinen <tomi.valkeinen@...asonboard.com>,
	dri-devel@...ts.freedesktop.org
Cc: Simona Vetter <simona@...ll.ch>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	linux-kernel@...r.kernel.org,
	Maxime Ripard <mripard@...nel.org>,
	David Airlie <airlied@...il.com>,
	linux-arm-kernel@...ts.infradead.org,
	Michal Simek <michal.simek@....com>,
	Anatoliy Klymenko <anatoliy.klymenko@....com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Mike Looijmans <mike.looijmans@...ic.nl>,
	Sean Anderson <sean.anderson@...ux.dev>
Subject: [PATCH v2 0/4] drm: zynqmp: Make the video plane primary

The graphics plane does not support XRGB8888, which is the default mode
X uses for 24-bit color. Because of this, X must be set to use 16-bit
color, which has a measurable performance penalty. Make the video plane
the primary plane as it natively supports XRGB8888. An alternative
approach to add XRGB8888 to the graphics plane is discussed in [1], as
well as in patch 2.

[1] https://lore.kernel.org/dri-devel/20250627145058.6880-1-mike.looijmans@topic.nl/

Changes in v2:
- Allow specifying blend mode default
- Advertise coverage instead of premulti, since that's what the hardware
  supports.
- Set default blend mode to none since that's what the default was
  before this series.

Sean Anderson (4):
  drm/drm_blend: Allow specifying blend mode default
  drm: zynqmp: Check property creation status
  drm: zynqmp: Make the video plane primary
  drm: zynqmp: Add blend mode property to graphics plane

 drivers/gpu/drm/drm_blend.c       | 22 ++++++-------
 drivers/gpu/drm/xlnx/zynqmp_kms.c | 53 +++++++++++++++++++++++++------
 include/drm/drm_blend.h           | 26 +++++++++++++--
 3 files changed, 78 insertions(+), 23 deletions(-)

-- 
2.35.1.1320.gc452695387.dirty