[igt-dev] [PATCH i-g-t 0/9] Chamelium VC4 plane testing, with T-tiled mode

[Paul Kocialkowski]

This series introduces the required plumbing for allocating buffers in
the VC4 T-tiled mode and converting to that mode from XR24 linear
buffers.

With that in place, a new Chamelium test is introduced to perform some
testing of planes with randomized properties. VC4-specific features such
as T-tiled mode, bandwidth limitation and overrun detection are also
tested.

It should be noted that the VC4 driver apaprently does not recover well
from underruns with the Chamelium, leading to "flip_done timed out"
errors in subsequent runs (until a reboot).

This series is based on Maxime Ripard's series:
  igt: chamelium: Test YUV buffers using the Chamelium

Paul Kocialkowski (9):
  chamelium: Pass dimensions instead of mode to pattern generation
    helper
  chamelium: Pass the pattern block size as argument to helpers
  lib: drmtest: Add helpers to check and require the VC4 driver
  lib/igt_fb: Add checks on i915 for i915-specific tiled buffer
    allocation
  lib/igt_fb: Add support for allocating T-tiled VC4 buffers
  lib/igt_vc4: Add helpers for converting linear to T-tiled XRGB buffers
  lib/igt_fb: Add a stride-provisioned fashion of igt_fb_convert
  lib/igt_fb: Add a helper to retreive the plane bpp for a given format
  chamelium: Add a CRC-based display test for randomized planes

 lib/drmtest.c         |  10 ++
 lib/drmtest.h         |   2 +
 lib/igt_fb.c          |  87 ++++++++++-
 lib/igt_fb.h          |   4 +
 lib/igt_vc4.c         |  96 ++++++++++++
 lib/igt_vc4.h         |   4 +
 tests/kms_chamelium.c | 352 ++++++++++++++++++++++++++++++++++++++++--
 7 files changed, 537 insertions(+), 18 deletions(-)

-- 
2.19.2