[RFC PATCH v2 00/11] YUV Conversion Colorop tests

[Harry Wentland <harry.wentland@amd.com>]

This kernel branch introduces a new CSC_FF colorop with
named matrices, including matrices for all YCbCr conversions
from BT.601, BT.709, and BT.2020, both limited and full range.
https://gitlab.freedesktop.org/hwentland/linux/-/tree/csc-ff-colorop

These patches add the functionality to IGT to test NV12 and
P010 buffers with the kms_colorop tests, and add corresponding
tests for CSC_FF to kms_colorop.

These test work on amdgpu (P010-XR30 variants) and VKMS
(NV12-XR24 variants).

On AMD HW a couple extra driver fixes are needed. They can be
found at this kernel tree:
https://gitlab.freedesktop.org/hwentland/linux/-/tree/csc-ff-colorop-all

This tree can be found at:
https://gitlab.freedesktop.org/hwentland/igt-gpu-tools/-/tree/csc-ff-colorop

Some more background on this work can be found at:
https://hwentland.github.io/2026/03/10/plane-color-pipeline-csc-3d-lut-kwin.html

Cc: Alex Hung <alex.hung@amd.com>
Cc: Daniel Stone <daniels@collabora.com>
Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Uma Shankar <uma.shankar@intel.com>
Cc: Louis Chauvet <louis.chauvet@bootlin.com>
Cc: Melissa Wen <mwen@igalia.com>
Cc: Simon Ser <contact@emersion.fr>

Harry Wentland (11):
  include/drm-uapi: Add DRM_COLOROP_CSC_FF and drm_colorop_csc_ff_type
  lib/igt_kms, tests/kms_colorop_helper: Add CSC FF colorop
    infrastructure
  tests/kms_colorop_helper: Add helpers to get encoding/range from CSC
    FF name
  lib/igt_fb: Add YUV color pattern framebuffer support
  lib/igt_color_encoding: Add XRGB2101010 format support
  lib/igt_color: Add YUV pixel reading support
  lib/igt_color: Refactor transform_pixels for input/output FBs and CSC
  tests/kms_colorop: Add CSC FF colorop tests
  tests/kms_colorop: Keep CRTC active between YUV tests with temp FB
  tests/kms_colorop: Add bypass transition tests
  tests/kms_colorop: Increase VKMS bracket to 3 up

 include/drm-uapi/drm_mode.h |  25 +++
 lib/igt_color.c             | 242 +++++++++++++++++---
 lib/igt_color.h             |   6 +-
 lib/igt_color_encoding.c    |   1 +
 lib/igt_fb.c                |  41 ++++
 lib/igt_fb.h                |   6 +
 lib/igt_kms.c               |   1 +
 lib/igt_kms.h               |   1 +
 tests/kms_colorop.c         | 436 ++++++++++++++++++++++++++++++------
 tests/kms_colorop_helper.c  |  75 +++++++
 tests/kms_colorop_helper.h  |  16 +-
 11 files changed, 740 insertions(+), 110 deletions(-)

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2.53.0