[PATCH 1/1] tests/kms_async_flips: add atomic test

[André Almeida]

From: Simon Ser <contact at emersion.fr>

This adds a simple test for DRM_MODE_PAGE_FLIP_ASYNC with the
atomic uAPI.

Signed-off-by: Simon Ser <contact at emersion.fr>
[Rebased and added modeset commit]
Signed-off-by: André Almeida <andrealmeid at igalia.com>
---
 tests/kms_async_flips.c | 44 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/tests/kms_async_flips.c b/tests/kms_async_flips.c
index 5dec71291..ce02db8e7 100644
--- a/tests/kms_async_flips.c
+++ b/tests/kms_async_flips.c
@@ -331,6 +331,42 @@ static void test_async_flip(data_t *data)
 	}
 }
 
+static void test_async_flip_atomic(data_t *data)
+{
+	int frame;
+	long long int fps;
+	struct timeval start, end, diff;
+
+	test_init(data);
+
+	/*
+	 * Async flips doesn't allow mode sets, so do a initial sync flip
+	 * setting this mode
+	 */
+	igt_plane_set_fb(data->plane, &data->bufs[0]);
+	igt_display_commit_atomic(&data->display, DRM_MODE_ATOMIC_ALLOW_MODESET, data);
+
+	gettimeofday(&start, NULL);
+	frame = 1;
+	do {
+		uint32_t flags = DRM_MODE_PAGE_FLIP_ASYNC | DRM_MODE_PAGE_FLIP_EVENT;
+
+		igt_plane_set_fb(data->plane, &data->bufs[frame % 4]);
+		igt_display_commit_atomic(&data->display, flags, data);
+
+		wait_flip_event(data);
+
+		gettimeofday(&end, NULL);
+		timersub(&end, &start, &diff);
+
+		frame++;
+	} while (diff.tv_sec < RUN_TIME);
+
+	fps = frame * 1000 / RUN_TIME;
+	igt_assert_f((fps / 1000) > (data->refresh_rate * MIN_FLIPS_PER_FRAME),
+		     "FPS should be significantly higher than the refresh rate\n");
+}
+
 static void wait_for_vblank(data_t *data, unsigned long *vbl_time, unsigned int *seq)
 {
 	drmVBlank wait_vbl;
@@ -765,6 +801,14 @@ igt_main
 		run_test(&data, test_async_flip);
 	}
 
+	igt_describe("Verify the async flip functionality and the fps during atomic async flips");
+	igt_subtest_with_dynamic("atomic-async-flip") {
+		require_monotonic_timestamp(data.drm_fd);
+		igt_require_f(igt_has_drm_cap(data.drm_fd, DRM_CAP_ATOMIC_ASYNC_PAGE_FLIP),
+			      "Atomic async page-flips are not supported\n");
+		run_test(&data, test_async_flip_atomic);
+	}
+
 	igt_fixture {
 		for (i = 0; i < NUM_FBS; i++)
 			igt_remove_fb(data.drm_fd, &data.bufs[i]);
-- 
2.47.0