[igt-dev] [PATCH V6 i-g-t 0/6] igt: Add support for testing writeback connectors

[Rodrigo Siqueira]

DRM already have writeback connectors support, which is a way to expose
in DRM the hardware functionality from display engines that allows
writing back into memory the result of the DE's composition of supported
planes.

These days, I'm working to add the writeback support into the vkms[1],
and I used the kms_writeback to validate my implementation. As a result,
I had to rebase the v5 version of Liviu's series, and I also fixed a
small issue in the first path (lib/igt_kms: Add writeback support).

Patches have been originally implemented by Brian, Liviu has done the v3
and v4 updates to them. I’m just sending a v6.

1. https://patchwork.freedesktop.org/series/61738/

Brian Starkey (6):
  lib/igt_kms: Add writeback support
  kms_writeback: Add initial writeback tests
  lib: Add function to hash a framebuffer
  kms_writeback: Add writeback-check-output
  lib/igt_kms: Add igt_output_clone_pipe for cloning
  kms_writeback: Add tests using a cloned output

 lib/igt_fb.c           |  66 ++++++
 lib/igt_fb.h           |   3 +
 lib/igt_kms.c          | 157 +++++++++----
 lib/igt_kms.h          |  10 +
 tests/Makefile.sources |   1 +
 tests/kms_writeback.c  | 492 +++++++++++++++++++++++++++++++++++++++++
 tests/meson.build      |   1 +
 7 files changed, 692 insertions(+), 38 deletions(-)
 create mode 100644 tests/kms_writeback.c

-- 
2.21.0


-- 
Rodrigo Siqueira
https://siqueira.tech
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