[Intel-gfx] [PATCH i-g-t 00/10] Add support for atomic modeset to IGT.

[Maarten Lankhorst]

Big patch series to perform a single thing.

With legacy modesets if the primary plane had a null fb it was disabled,
and code would often do the following:

for_each_pipe(...)
	for_each_output(...) {
		igt_output_set_pipe(output, pipe);

		igt_display_commit();

		if (!output->valid)
			bail;

		cleanup;
		igt_output_set_pipe(output, PIPE_ANY);
		igt_display_commit();
	}

A straightforward replacement of igt_display_commit with
igt_display_commit2(COMMIT_ATOMIC) will not work with this
series, since in this case it can perform a modeset without
primary framebuffer, and invalid configurations get rejected.

Best solution is to do the following to get atomic behavior,
with fallback to legacy:

bool valid = false;

for_each_pipe_with_valid_output(display, pipe, output) {
	valid = true;

	igt_output_set_pipe(output, pipe);
	/* perform more setup here for planes, etc */
	igt_display_commit2(display, display->is_atomic ? COMMIT_ATOMIC : COMMIT_LEGACY);

	/* tests + cleanup */
	igt_output_set_pipe(output, PIPE_NONE);
}

igt_require_f(valid, "no valid crtc/connector combinations found\n");

If the test requires a fixed pipe, use for_each_valid_output_on_pipe instead.

Maarten Lankhorst (10):
  igt_kms: Remove kmstest_connector_config.crtc_idx
  igt_kms: Find optimal encoder only after selecting pipe
  kms_psr_sink_crc: Use for_each_pipe_with_valid_output to find a valid
    config.
  igt_kms: Make PIPE_ANY a alias for PIPE_NONE
  igt_kms: Change PIPE_ANY behavior to mean unassigned
  igt_kms: Handle atomic pipe properties better.
  igt_kms: Remove pan members from igt_plane
  igt_kms: Clear all _changed members centrally
  igt_kms: Add modeset support to atomic commits.
  tests: Add kms_rmfb test.

 lib/igt_kms.c             | 626 ++++++++++++++++++++++++++--------------------
 lib/igt_kms.h             |  48 ++--
 tests/Makefile.sources    |   1 +
 tests/kms_panel_fitting.c |   2 +-
 tests/kms_plane.c         |   8 +-
 tests/kms_plane_scaling.c |   2 +-
 tests/kms_psr_sink_crc.c  |   5 +-
 tests/kms_rmfb.c          | 171 +++++++++++++
 tests/testdisplay.c       |   4 +-
 9 files changed, 567 insertions(+), 300 deletions(-)
 create mode 100644 tests/kms_rmfb.c

-- 
2.5.5