[PATCH v4 05/11] drm/fourcc: Add DRM_FORMAT_X403

Tomi Valkeinen
2025-03-26T13:23:26Z

Add X403, a 3 plane non-subsampled YCbCr format.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
---
drivers/gpu/drm/drm_fourcc.c | 3 +++
include/uapi/drm/drm_fourcc.h | 8 ++++++++
2 files changed, 11 insertions(+)

diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c
index e5f04f7ec164..60684f99f4a7 100644
--- a/drivers/gpu/drm/drm_fourcc.c
+++ b/drivers/gpu/drm/drm_fourcc.c
@@ -356,6 +356,9 @@ 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 f6316adbeb97..10d77f6f6e95 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -385,6 +385,14 @@ 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
* index 0: Y plane, [7:0] Y

--
2.43.0