[Intel-gfx] [PATCH i-g-t v2] kms_atomic_transition: Split out modeset tests on internal panels

[Imre Deak]

Doing modeset on internal panels may have a considerable overhead due to
the panel specific power sequencing delays. To avoid long test runtimes
in CI split out the testing of internal panels from the plane modeset
subtests and test only a reduced number of plane combinations on these:
where only a single plane is enabled or all planes are enabled.

v2:
- Add code comment explaining the need for the separate internal-panels
  subtests.
- Calculate the number of enabled planes only once. (Chris)
- Disable the slow internal-panels subtests testing all combinations.
  (Petri)

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103334
Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
Cc: Petri Latvala <petri.latvala at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Signed-off-by: Imre Deak <imre.deak at intel.com>
---
 tests/kms_atomic_transition.c | 61 ++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 57 insertions(+), 4 deletions(-)

diff --git a/tests/kms_atomic_transition.c b/tests/kms_atomic_transition.c
index 4c295125..c57a9356 100644
--- a/tests/kms_atomic_transition.c
+++ b/tests/kms_atomic_transition.c
@@ -189,6 +189,7 @@ enum transition_type {
 	TRANSITION_PLANES,
 	TRANSITION_AFTER_FREE,
 	TRANSITION_MODESET,
+	TRANSITION_MODESET_FAST,
 	TRANSITION_MODESET_DISABLE,
 };
 
@@ -528,6 +529,13 @@ run_transition_test(igt_display_t *display, enum pipe pipe, igt_output_t *output
 	}
 
 	for (i = 0; i < iter_max; i++) {
+		int n_enable_planes = hweight32(i);
+
+		if (type == TRANSITION_MODESET_FAST &&
+		    n_enable_planes != 1 &&
+		    n_enable_planes != pipe_obj->n_planes)
+			continue;
+
 		igt_output_set_pipe(output, pipe);
 
 		wm_setup_plane(display, pipe, i, parms, fencing);
@@ -547,16 +555,23 @@ run_transition_test(igt_display_t *display, enum pipe pipe, igt_output_t *output
 
 			/* i -> i+1 will be done when i increases, can be skipped here */
 			for (j = iter_max - 1; j > i + 1; j--) {
+				n_enable_planes = hweight32(j);
+
+				if (type == TRANSITION_MODESET_FAST &&
+				    n_enable_planes != 1 &&
+				    n_enable_planes != pipe_obj->n_planes)
+					continue;
+
 				wm_setup_plane(display, pipe, j, parms, fencing);
 
-				if (type == TRANSITION_MODESET)
+				if (type >= TRANSITION_MODESET)
 					igt_output_override_mode(output, &override_mode);
 
 				atomic_commit(display, pipe, flags, (void *)(unsigned long) j, fencing);
 				wait_for_transition(display, pipe, nonblocking, fencing);
 
 				wm_setup_plane(display, pipe, i, parms, fencing);
-				if (type == TRANSITION_MODESET)
+				if (type >= TRANSITION_MODESET)
 					igt_output_override_mode(output, NULL);
 
 				atomic_commit(display, pipe, flags, (void *)(unsigned long) i, fencing);
@@ -864,6 +879,19 @@ static void run_modeset_transition(igt_display_t *display, int requested_outputs
 	run_modeset_tests(display, requested_outputs, nonblocking, fencing);
 }
 
+static bool output_is_internal_panel(igt_output_t *output)
+{
+	switch (output->config.connector->connector_type) {
+	case DRM_MODE_CONNECTOR_LVDS:
+	case DRM_MODE_CONNECTOR_eDP:
+	case DRM_MODE_CONNECTOR_DSI:
+	case DRM_MODE_CONNECTOR_DPI:
+		return true;
+	default:
+		return false;
+	}
+}
+
 igt_main
 {
 	igt_display_t display;
@@ -913,13 +941,38 @@ igt_main
 		for_each_pipe_with_valid_output(&display, pipe, output)
 			run_transition_test(&display, pipe, output, TRANSITION_AFTER_FREE, true, true);
 
+	/*
+	 * Test modeset cases on internal panels separately with a reduced
+	 * number of combinations, to avoid long runtimes due to modesets on
+	 * panels with long power cycle delays.
+	 */
 	igt_subtest("plane-all-modeset-transition")
-		for_each_pipe_with_valid_output(&display, pipe, output)
+		for_each_pipe_with_valid_output(&display, pipe, output) {
+			if (output_is_internal_panel(output))
+				continue;
 			run_transition_test(&display, pipe, output, TRANSITION_MODESET, false, false);
+		}
 
 	igt_subtest("plane-all-modeset-transition-fencing")
-		for_each_pipe_with_valid_output(&display, pipe, output)
+		for_each_pipe_with_valid_output(&display, pipe, output) {
+			if (output_is_internal_panel(output))
+				continue;
 			run_transition_test(&display, pipe, output, TRANSITION_MODESET, false, true);
+		}
+
+	igt_subtest("plane-all-modeset-transition-internal-panels")
+		for_each_pipe_with_valid_output(&display, pipe, output) {
+			if (!output_is_internal_panel(output))
+				continue;
+			run_transition_test(&display, pipe, output, TRANSITION_MODESET_FAST, false, false);
+		}
+
+	igt_subtest("plane-all-modeset-transition-fencing-internal-panels")
+		for_each_pipe_with_valid_output(&display, pipe, output) {
+			if (!output_is_internal_panel(output))
+				continue;
+			run_transition_test(&display, pipe, output, TRANSITION_MODESET_FAST, false, true);
+		}
 
 	igt_subtest("plane-toggle-modeset-transition")
 		for_each_pipe_with_valid_output(&display, pipe, output)
-- 
2.13.2