[igt-dev] [PATCH RFC i-g-t v2 7/8] tests/kms_universal_plane: decouple verification of ablity to explicitly disable an already implicitly-disabled primary plane

[Alaa Emad <aemad@igalia.com>]

decouple verification of ablity to explicitly disable an already implicitly-disabled primary plane
in a separated subtests to be able to run it individually, creating the function.

Signed-off-by: Alaa Emad <aemad@igalia.com>
---
 tests/kms_universal_plane.c | 94 +++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)

diff --git a/tests/kms_universal_plane.c b/tests/kms_universal_plane.c
index c513eff9..743ccbc6 100644
--- a/tests/kms_universal_plane.c
+++ b/tests/kms_universal_plane.c
@@ -546,6 +546,94 @@ test_set_primary_completely_offscreen(data_t *data, enum pipe pipe, igt_output_t
 	functional_test_fini(&test, output);
 }
 
+//SUCCESS on VKMS and i915
+static void
+test_explicitly_disable_primary(data_t *data, enum pipe pipe, igt_output_t *output)
+{
+	functional_test_t test = {.data = data};
+	igt_display_t *display = &data->display;
+	igt_plane_t *primary, *sprite;
+	int num_primary = 0, num_cursor = 0;
+	int i;
+
+	igt_require_pipe(display, pipe);
+
+	igt_info("Testing connector %s using pipe %s\n", igt_output_name(output),
+			 kmstest_pipe_name(pipe));
+
+	functional_test_init(&test, output, pipe);
+
+	/*
+	 * Make sure we have no more than one primary or cursor plane per crtc.
+	 * If the kernel accidentally calls drm_plane_init() rather than
+	 * drm_universal_plane_init(), the type enum can get interpreted as a
+	 * boolean and show up in userspace as the wrong type.
+	 */
+	for (i = 0; i < display->pipes[pipe].n_planes; i++)
+		if (display->pipes[pipe].planes[i].type == DRM_PLANE_TYPE_PRIMARY)
+			num_primary++;
+		else if (display->pipes[pipe].planes[i].type == DRM_PLANE_TYPE_CURSOR)
+			num_cursor++;
+
+	igt_warn_on(num_primary != 1);
+	igt_warn_on(num_cursor > 1);
+
+	primary = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
+	sprite = igt_output_get_plane_type(output, DRM_PLANE_TYPE_OVERLAY);
+	if (!sprite)
+	{
+		functional_test_fini(&test, output);
+		igt_skip("No sprite plane available\n");
+	}
+
+	igt_plane_set_position(sprite, 100, 100);
+
+	/* Step 3: Legacy API's, yellow primary (CRC 3) */
+	igt_plane_set_fb(primary, &test.yellow_fb);
+	igt_display_commit2(display, COMMIT_LEGACY);
+	igt_pipe_crc_collect_crc(test.pipe_crc, &test.crc_3);
+
+	/* Step 4: Universal API's, blue primary, red sprite (CRC 4) */
+	igt_plane_set_fb(primary, &test.blue_fb);
+	igt_plane_set_fb(sprite, &test.red_fb);
+	igt_display_commit2(display, COMMIT_UNIVERSAL);
+	igt_pipe_crc_collect_crc(test.pipe_crc, &test.crc_4);
+
+	/* Step 5: Universal API's, disable primary plane (CRC 5) */
+	if (!is_amdgpu_device(data->drm_fd)) {
+		igt_plane_set_fb(primary, NULL);
+		igt_display_commit2(display, COMMIT_UNIVERSAL);
+		igt_pipe_crc_collect_crc(test.pipe_crc, &test.crc_5);
+	}
+
+	/*
+	 * Step 15: Explicitly disable primary after it's already been
+	 * implicitly disabled (CRC 10).
+	 */
+	if (!is_amdgpu_device(data->drm_fd)) {
+		igt_plane_set_fb(primary, NULL);
+		igt_display_commit2(display, COMMIT_UNIVERSAL);
+		igt_pipe_crc_collect_crc(test.pipe_crc, &test.crc_10);
+	}
+
+	/* Step 16: Legacy API's, blue primary, red sprite */
+	igt_plane_set_fb(primary, &test.blue_fb);
+	igt_plane_set_fb(sprite, &test.red_fb);
+	igt_display_commit2(display, COMMIT_LEGACY);
+
+	/*
+	 * We should be able to explicitly disable an already
+	 * implicitly-disabled primary plane
+	 */
+	igt_assert_crc_equal(&test.crc_5, &test.crc_10);
+
+	igt_plane_set_fb(primary, NULL);
+	igt_plane_set_fb(sprite, NULL);
+
+	functional_test_fini(&test, output);
+}
+
+
 /*
  * Universal plane functional testing.
  *   - Black primary plane via traditional interfaces, red sprite, grab CRC:1.
@@ -1251,6 +1339,12 @@ run_tests_for_pipe(data_t *data, enum pipe pipe)
 		      kmstest_pipe_name(pipe))
 		for_each_valid_output_on_pipe(&data->display, pipe, output)
 			test_set_primary_completely_offscreen(data, pipe, output);
+	
+	igt_describe("Check the switching between different primary plane fbs with CRTC off");
+	igt_subtest_f("explicitly-disable-primary-%s",
+		      kmstest_pipe_name(pipe))
+		for_each_valid_output_on_pipe(&data->display, pipe, output)
+			test_explicitly_disable_primary(data, pipe, output);
 
 	igt_describe("Check the switching between different primary plane fbs with CRTC off");
 	igt_subtest_f("universal-plane-pipe-%s-functional",
-- 
2.34.1