[PATCH v2 00/13] drm/i915/color: Enable SDR plane color pipeline

[Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>]

This series adds color pipeline support for SDR planes in i915 and
exposes the functionality to userspace through the DRM colorop
framework.

In contrast to HDR planes, SDR planes have LUTs with smaller sizes
and a fixed function CSC block in contrast to a programmable CTM.

The series first introduces a new DRM colorop type,
DRM_COLOROP_FIXED_MATRIX, which represents fixed-function CSC blocks where
userspace selects predefined hardware conversion modes instead of
programming arbitrary matrices. It also adds the YUV correction HW block.
With this the color pipeline can accept both limited range and full range
YUV framebuffers.

With that, the SDR plane color pipeline looks like.

[YUV Range Correct] -> [1D LUT] -> [CSC] -> [1D LUT]

The series also fixes an issue in HDR pre-CSC LUT programming where the
loop condition prevented the last entries from being programmed.

v2:
 - Naming changes [Pekka]
 - Adds YUV color range correct block

Chaitanya Kumar Borah (8):
  drm/colorop: Add DRM_COLOROP_FIXED_MATRIX
  drm/i915/color: Add CSC on SDR plane color pipeline
  drm/i915/color: Program fixed-function CSC on SDR planes
  drm/i915/color: Add support for 1D LUT in SDR planes
  drm/i915/color: Add color pipeline support for SDR planes
  drm/i915/color: Add YCbCr limited-to-full range color block support
  drm/i915/color: Program plane YUV range correction colorop
  drm/i915/color: Add YUV range correction to SDR plane pipeline

Pranay Samala (5):
  drm/i915/color: Fix HDR pre-CSC LUT programming loop
  drm/i915/color: Extract HDR pre-CSC LUT programming to helper function
  drm/i915/color: Program Pre-CSC registers for SDR
  drm/i915/color: Extract HDR post-CSC LUT programming to helper
    function
  drm/i915/color: Program Plane Post CSC registers for SDR planes

 drivers/gpu/drm/drm_atomic.c                  |   4 +
 drivers/gpu/drm/drm_atomic_uapi.c             |   4 +
 drivers/gpu/drm/drm_colorop.c                 | 107 +++++++
 drivers/gpu/drm/i915/display/intel_color.c    | 288 +++++++++++++-----
 .../drm/i915/display/intel_color_pipeline.c   |  44 ++-
 .../drm/i915/display/intel_display_limits.h   |   2 +
 .../drm/i915/display/intel_display_types.h    |   3 +
 drivers/gpu/drm/i915/display/intel_plane.c    |  15 +-
 .../drm/i915/display/skl_universal_plane.c    |  33 ++
 include/drm/drm_colorop.h                     |  84 +++++
 include/uapi/drm/drm_mode.h                   |  12 +
 11 files changed, 503 insertions(+), 93 deletions(-)

-- 
2.25.1