[RFC PATCH 00/10] Color Pipeline API w/ VKMS

[Harry Wentland]

This is an early RFC set for a color pipeline API, along with a
sample implementation in VKMS. All the key API bits are here, but
I would like to show a larger variety of colorop types, as well
as examples of different possible color pipelines for a given plane.

The first patch is a doc patch that will explain the motivation
and reasoning behind this approach and give an overview over the
API.

IGT tests can be found at
https://gitlab.freedesktop.org/hwentland/igt-gpu-tools/-/merge_requests/1

IGT patches are also being sent to the igt-dev mailing list.

libdrm changes to support the new IOCTLs are at
https://gitlab.freedesktop.org/hwentland/drm/-/merge_requests/1

If you prefer a gitlab MR for review you can find it at
https://gitlab.freedesktop.org/hwentland/linux/-/merge_requests/5

A slightly different approach for a Color Pipeline API was sent by
Uma Shankar and can be found at
https://patchwork.freedesktop.org/series/123024/

The main difference is that his approach is not introducing a new DRM
core object but instead exposes color pipelines via blob properties.
There are pros and cons to both approaches.

Cc: Ville Syrjala <ville.syrjala at linux.intel.com>
Cc: Pekka Paalanen <pekka.paalanen at collabora.com>
Cc: Simon Ser <contact at emersion.fr>
Cc: Harry Wentland <harry.wentland at amd.com>
Cc: Melissa Wen <mwen at igalia.com>
Cc: Jonas Ådahl <jadahl at redhat.com>
Cc: Sebastian Wick <sebastian.wick at redhat.com>
Cc: Shashank Sharma <shashank.sharma at amd.com>
Cc: Alexander Goins <agoins at nvidia.com>
Cc: Joshua Ashton <joshua at froggi.es>
Cc: Michel Dänzer <mdaenzer at redhat.com>
Cc: Aleix Pol <aleixpol at kde.org>
Cc: Xaver Hugl <xaver.hugl at gmail.com>
Cc: Victoria Brekenfeld <victoria at system76.com>
Cc: Daniel Vetter <daniel at ffwll.ch>
Cc: Uma Shankar <uma.shankar at intel.com>
Cc: Naseer Ahmed <quic_naseer at quicinc.com>
Cc: Christopher Braga <quic_cbraga at quicinc.com>

Harry Wentland (10):
  drm/doc/rfc: Describe why prescriptive color pipeline is needed
  drm/colorop: Introduce new drm_colorop mode object
  drm/colorop: Add TYPE property
  drm/color: Add 1D Curve subtype
  drm/colorop: Add BYPASS property
  drm/colorop: Add NEXT property
  drm/colorop: Add atomic state print for drm_colorop
  drm/colorop: Add new IOCTLs to retrieve drm_colorop objects
  drm/plane: Add COLOR PIPELINE property
  drm/vkms: Add enumerated 1D curve colorop

 Documentation/gpu/rfc/color_pipeline.rst  | 278 ++++++++++++++++++
 drivers/gpu/drm/Makefile                  |   1 +
 drivers/gpu/drm/drm_atomic.c              | 154 ++++++++++
 drivers/gpu/drm/drm_atomic_helper.c       |  12 +
 drivers/gpu/drm/drm_atomic_state_helper.c |   5 +
 drivers/gpu/drm/drm_atomic_uapi.c         | 110 +++++++
 drivers/gpu/drm/drm_colorop.c             | 343 ++++++++++++++++++++++
 drivers/gpu/drm/drm_crtc_internal.h       |   4 +
 drivers/gpu/drm/drm_ioctl.c               |   5 +
 drivers/gpu/drm/drm_mode_config.c         |   7 +
 drivers/gpu/drm/drm_plane_helper.c        |   2 +-
 drivers/gpu/drm/vkms/Makefile             |   3 +-
 drivers/gpu/drm/vkms/vkms_colorop.c       | 108 +++++++
 drivers/gpu/drm/vkms/vkms_composer.c      | 316 ++++++++++++++++++++
 drivers/gpu/drm/vkms/vkms_drv.h           |   4 +
 drivers/gpu/drm/vkms/vkms_plane.c         |   2 +
 include/drm/drm_atomic.h                  |  82 ++++++
 include/drm/drm_atomic_uapi.h             |   3 +
 include/drm/drm_colorop.h                 | 233 +++++++++++++++
 include/drm/drm_mode_config.h             |  18 ++
 include/drm/drm_plane.h                   |  10 +
 include/uapi/drm/drm.h                    |   3 +
 include/uapi/drm/drm_mode.h               |  22 ++
 23 files changed, 1723 insertions(+), 2 deletions(-)
 create mode 100644 Documentation/gpu/rfc/color_pipeline.rst
 create mode 100644 drivers/gpu/drm/drm_colorop.c
 create mode 100644 drivers/gpu/drm/vkms/vkms_colorop.c
 create mode 100644 include/drm/drm_colorop.h

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2.42.0