linux-kernel - [PATCH] drm: xlnx: zynqmp_dp: Support DRM_FORMAT

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Message-ID: <20250627145058.6880-1-mike.looijmans@topic.nl>
Date: Fri, 27 Jun 2025 16:50:46 +0200
From: Mike Looijmans <mike.looijmans@...ic.nl>
To: dri-devel@...ts.freedesktop.org
CC: Mike Looijmans <mike.looijmans@...ic.nl>,
	David Airlie <airlied@...il.com>,
	Laurent Pinchart <laurent.pinchart@...asonboard.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Michal Simek <michal.simek@....com>,
	Simona Vetter <simona@...ll.ch>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	Tomi Valkeinen <tomi.valkeinen@...asonboard.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] drm: xlnx: zynqmp_dp: Support DRM_FORMAT_XRGB8888

XRGB8888 is the default mode that Xorg will want to use. Add support
for this to the Zynqmp DisplayPort driver, so that applications can use
32-bit framebuffers. This solves that the X server would fail to start
unless one provided an xorg.conf that sets DefaultDepth to 16.

Signed-off-by: Mike Looijmans <mike.looijmans@...ic.nl>
---

 drivers/gpu/drm/xlnx/zynqmp_disp.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/xlnx/zynqmp_disp.c b/drivers/gpu/drm/xlnx/zynqmp_disp.c
index 80d1e499a18d..501428437000 100644
--- a/drivers/gpu/drm/xlnx/zynqmp_disp.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_disp.c
@@ -312,6 +312,11 @@ static const struct zynqmp_disp_format avbuf_gfx_fmts[] = {
 		.buf_fmt	= ZYNQMP_DISP_AV_BUF_FMT_NL_GFX_RGBA8888,
 		.swap		= true,
 		.sf		= scaling_factors_888,
+	}, {
+		.drm_fmt	= DRM_FORMAT_XRGB8888,
+		.buf_fmt	= ZYNQMP_DISP_AV_BUF_FMT_NL_GFX_RGBA8888,
+		.swap		= true,
+		.sf		= scaling_factors_888,
 	}, {
 		.drm_fmt	= DRM_FORMAT_RGBA8888,
 		.buf_fmt	= ZYNQMP_DISP_AV_BUF_FMT_NL_GFX_ABGR8888,
-- 
2.43.0

base-commit: 67a993863163cb88b1b68974c31b0d84ece4293e
branch: linux-master-zynqmpdp-32bit

Met vriendelijke groet / kind regards,

Mike Looijmans
System Expert


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