[igt-dev] [v4 i-g-t 00/14] Fix mode selection for 2x tests

[Bhanuprakash Modem]

When two monitors connected through MST, the second monitor also
tries to use the same mode. So two such modes may not fit into the
link bandwidth.

This series will find a combination of modes that fit into the BW.

IGT core helper would override the mode on all connectors that will
be modeset by the next igt_display_commit() call in the test. These
are all the connectors in igt_display_t that have a pending_pipe set
by the test up to the point of calling this helper.

For 1x tests, cleanup the state before exiting the test.

Follow-up:
As modeset will happen one by one, we can't apply this approach on
tests/kms_flip.c & tests/kms_setmode.c

Cc: Imre Deak <imre.deak at intel.com>
Cc: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem at intel.com>

Bhanuprakash Modem (14):
  lib/igt_kms: helper to override the mode on all connectors
  tests/kms_frontbuffer_tracking: Fix mode selection for 2x tests
  tests/kms_cursor_legacy: Fix mode selection for 2x tests
  tests/debugfs_test: Fix mode selection for MST
  tests/kms_content_protection: Fix mode selection for 2x tests
  tests/kms_plane_scaling: Fix mode selection for 2x tests
  tests/kms_atomic_transition: Fix mode selection for 2x tests
  tests/kms_plane: Reset the state before exiting the test
  tests/kms_plane_alpha_blend: Reset the state before exiting the test
  tests/kms_cursor_edge_walk: Reset the state before exiting the test
  tests/kms_plane_lowres: Reset the state before exiting the test
  tests/kms_plane_cursor: Reset the state before exiting the test
  tests/kms_flip_scaled_crc: Reset the state before exiting the test
  tests/kms_vblank: Reset the state before exiting the test

 lib/igt_kms.c                    | 72 ++++++++++++++++++++++++++++++++
 lib/igt_kms.h                    |  1 +
 tests/debugfs_test.c             | 10 +++++
 tests/kms_atomic_transition.c    | 10 +++++
 tests/kms_content_protection.c   | 41 +++++++-----------
 tests/kms_cursor_edge_walk.c     |  3 ++
 tests/kms_cursor_legacy.c        | 47 +++++++++++++++++++--
 tests/kms_flip_scaled_crc.c      |  5 +++
 tests/kms_frontbuffer_tracking.c | 33 +++++++++++++++
 tests/kms_plane.c                | 19 ++++++---
 tests/kms_plane_alpha_blend.c    |  5 ++-
 tests/kms_plane_cursor.c         |  4 ++
 tests/kms_plane_lowres.c         |  9 ++--
 tests/kms_plane_scaling.c        | 15 +++++--
 tests/kms_vblank.c               |  2 +
 15 files changed, 231 insertions(+), 45 deletions(-)

--
2.20.1