[PATCH i-g-t v4 0/3] Fix 2-display test for MST shared-link BW

[Sowmiya S <sowmiya.s@intel.com>]

    On MST hubs / daisy-chain setups two display streams
share one DP link; a joint atomic commit can be rejected
by the driver if the combined mode bandwidth exceeds the
link capacity. The driver therefore adjusts per-pipe
settings (for example reducing pipe bpp and enabling
dithering) when both streams are committed together,
so tests must pick a mode combination the driver will accept.

Sowmiya S (3):
  lib/igt_kms: Add MST bandwidth-fitting support and helpers
  tests/kms_plane_multiple: Fix 2-display test for MST shared-link BW
  tests/intel/kms_pipe_stress: Fit display modes to MST link budget

 lib/igt_kms.c                 | 74 ++++++++++++++++++++++++++++++
 lib/igt_kms.h                 |  1 +
 tests/intel/kms_pipe_stress.c | 51 +++++++++++++++++++++
 tests/kms_plane_multiple.c    | 85 +++++++++++++++++++++++++++++------
 4 files changed, 197 insertions(+), 14 deletions(-)

-- 
2.51.0