[PATCH i-g-t] tests/kms_rotation_crc: exercise invalid rotations

[Matthew Auld <matthew.auld@xxxxxxxxx>]

Add expect-to-fail tests for invalid rotations on each of the plane types.

v2:
(Ville Syrjälä)
    - use igt_create_fb
    - y-tiled will be rejected by gen < 9
    - don't hardcode all the plane rotation failure combinations

Cc: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>
---
 tests/kms_rotation_crc.c | 77 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)

diff --git a/tests/kms_rotation_crc.c b/tests/kms_rotation_crc.c
index f94f8f1..fb3e2e8 100644
--- a/tests/kms_rotation_crc.c
+++ b/tests/kms_rotation_crc.c
@@ -479,6 +479,71 @@ err_commit:
 	igt_assert(ret == 0);
 }
 
+static void exhaust_invalid_plane_rotations(data_t *data, enum igt_plane plane_type)
+{
+	igt_display_t *display = &data->display;
+	int fd = data->gfx_fd, fb_id;
+	uint64_t tiling;
+	uint32_t pixel_format = DRM_FORMAT_XRGB8888;
+	enum igt_commit_style commit = COMMIT_LEGACY;
+	igt_output_t *output = &display->outputs[0];
+	igt_plane_t *plane;
+	drmModeModeInfo *mode;
+	drmModePropertyPtr prop;
+	uint64_t supported_plane_rotations = 0, rotation = IGT_ROTATION_0;
+	int ret, i;
+
+	if (intel_gen(intel_get_drm_devid(fd)) >= 9)
+		tiling = LOCAL_I915_FORMAT_MOD_Y_TILED;
+	else
+		tiling = LOCAL_I915_FORMAT_MOD_X_TILED;
+
+	if (plane_type == IGT_PLANE_PRIMARY || plane_type == IGT_PLANE_CURSOR) {
+		igt_require(data->display.has_universal_planes);
+		commit = COMMIT_UNIVERSAL;
+	}
+
+	igt_require(output != NULL && output->valid == true);
+
+	plane = igt_output_get_plane(output, plane_type);
+	igt_require(igt_plane_supports_rotation(plane));
+
+	mode = igt_output_get_mode(output);
+
+	fb_id = igt_create_fb(fd, mode->hdisplay, mode->vdisplay, pixel_format,
+			      tiling, &data->fb);
+	igt_assert(fb_id);
+
+	igt_plane_set_fb(plane, NULL);
+	igt_display_commit(display);
+
+	igt_plane_set_fb(plane, &data->fb);
+
+	kmstest_get_property(fd, plane->drm_plane->plane_id, DRM_MODE_OBJECT_PLANE,
+			     "rotation", NULL, NULL, &prop);
+
+	for (i = 0; i < prop->count_enums; ++i)
+		supported_plane_rotations |= (1ULL << prop->enums[i].value);
+
+	for (i = 1; i <= 4; i++) {
+		if (!(rotation & supported_plane_rotations)) {
+			igt_plane_set_rotation(plane, rotation);
+
+			ret = igt_display_try_commit2(display, commit);
+			if (ret != -EINVAL)
+				goto err_commit;
+
+		}
+		rotation <<= 1;
+	}
+
+err_commit:
+	igt_remove_fb(fd, &data->fb);
+	kmstest_restore_vt_mode();
+
+	igt_assert_eq(ret, -EINVAL);
+}
+
 igt_main
 {
 	data_t data = {};
@@ -579,6 +644,18 @@ igt_main
 		test_plane_rotation_exhaust_fences(&data, IGT_PLANE_PRIMARY);
 	}
 
+	igt_subtest_f("primary-rotations-invalid") {
+		exhaust_invalid_plane_rotations(&data, IGT_PLANE_PRIMARY);
+	}
+
+	igt_subtest_f("sprite-rotations-invalid") {
+		exhaust_invalid_plane_rotations(&data, IGT_PLANE_2);
+	}
+
+	igt_subtest_f("cursor-rotations-invalid") {
+		exhaust_invalid_plane_rotations(&data, IGT_PLANE_CURSOR);
+	}
+
 	igt_fixture {
 		igt_display_fini(&data.display);
 	}
-- 
2.4.3

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