[PATCH i-g-t v1 0/2] 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 (2):
  lib/igt_kms: Add MST bandwidth-fitting support and helpers
  tests/kms_plane_multiple: Fix 2-display test for MST shared-link BW

 lib/igt_kms.c              | 33 +++++++++++++++
 lib/igt_kms.h              |  3 ++
 tests/kms_plane_multiple.c | 87 ++++++++++++++++++++++++++++++++------
 3 files changed, 109 insertions(+), 14 deletions(-)

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2.43.0