linux-kernel - [PATCH v6 05/11] drm/fourcc: Add DRM_FORMAT

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Message-Id: <20251001-xilinx-formats-v6-5-014b076b542a@ideasonboard.com>
Date: Wed, 01 Oct 2025 16:22:17 +0300
From: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
To: Vishal Sagar <vishal.sagar@....com>, 
 Anatoliy Klymenko <anatoliy.klymenko@....com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Michal Simek <michal.simek@....com>
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, 
 Geert Uytterhoeven <geert@...ux-m68k.org>, 
 Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>, 
 Pekka Paalanen <ppaalanen@...il.com>, 
 Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
Subject: [PATCH v6 05/11] drm/fourcc: Add DRM_FORMAT_X403

Add X403, a 3 plane 10 bits per component non-subsampled YCbCr format.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Reviewed-by: Vishal Sagar <vishal.sagar@....com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
---
 drivers/gpu/drm/drm_fourcc.c  | 3 +++
 include/uapi/drm/drm_fourcc.h | 9 +++++++++
 2 files changed, 12 insertions(+)

diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c
index 0d222f6c1a30..ab643dedd6d4 100644
--- a/drivers/gpu/drm/drm_fourcc.c
+++ b/drivers/gpu/drm/drm_fourcc.c
@@ -391,6 +391,9 @@ const struct drm_format_info *__drm_format_info(u32 format)
 		{ .format = DRM_FORMAT_Y10_P32,		.depth = 0,  .num_planes = 1,
 		  .char_per_block = { 4, 0, 0 }, .block_w = { 3, 0, 0 }, .block_h = { 1, 0, 0 },
 		  .hsub = 1, .vsub = 1, .is_yuv = true },
+		{ .format = DRM_FORMAT_X403,		.depth = 0,  .num_planes = 3,
+		  .char_per_block = { 4, 4, 4 }, .block_w = { 3, 3, 3 }, .block_h = { 1, 1, 1 },
+		  .hsub = 1, .vsub = 1, .is_yuv = true },
 	};
 
 	unsigned int i;
diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index 4754bb48e4c3..8ac36a74ceb1 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -403,6 +403,15 @@ extern "C" {
  */
 #define DRM_FORMAT_Q401		fourcc_code('Q', '4', '0', '1')
 
+/*
+ * 3 plane non-subsampled (444) YCbCr
+ * 10 bpc, 30 bits per sample image data in a single contiguous buffer.
+ * index 0: Y plane,  [31:0] x:Y2:Y1:Y0    [2:10:10:10] little endian
+ * index 1: Cb plane, [31:0] x:Cb2:Cb1:Cb0 [2:10:10:10] little endian
+ * index 2: Cr plane, [31:0] x:Cr2:Cr1:Cr0 [2:10:10:10] little endian
+ */
+#define DRM_FORMAT_X403		fourcc_code('X', '4', '0', '3')
+
 /*
  * 3 plane YCbCr LSB aligned
  * In order to use these formats in a similar fashion to MSB aligned ones

-- 
2.43.0