[PATCH i-g-t] tests/kms_async_flips: introduce new subtest to

[Santhosh Reddy Guddati]

validate async flips with suspend resume
---
 tests/kms_async_flips.c | 53 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/tests/kms_async_flips.c b/tests/kms_async_flips.c
index 5b70c4033..fd851397e 100644
--- a/tests/kms_async_flips.c
+++ b/tests/kms_async_flips.c
@@ -66,6 +66,9 @@
  *
  * SUBTEST: invalid-async-flip
  * Description: Negative case to verify if changes in fb are rejected from kernel as expected
+ *
+ * SUBTEST: async-flip-suspend-resume
+ * Description: Verify the async flip functionality with suspend and resume cycle
  */
 
 #define CURSOR_POS 128
@@ -672,6 +675,51 @@ static void run_test_with_modifiers(data_t *data, void (*test)(data_t *))
 	}
 }
 
+static void test_async_flip_suspend_resume(data_t *data)
+{
+	int ret, frame;
+	long long int fps;
+	struct timeval start, end, diff;
+	int suspend_time = 1;
+	int resume_time = 1;
+
+	igt_display_commit2(&data->display, data->display.is_atomic ? COMMIT_ATOMIC : COMMIT_LEGACY);
+
+	gettimeofday(&start, NULL);
+	frame = 1;
+	do {
+		int flags = DRM_MODE_PAGE_FLIP_ASYNC | DRM_MODE_PAGE_FLIP_EVENT;
+
+		ret = drmModePageFlip(data->drm_fd, data->crtc_id,
+				      data->bufs[frame % NUM_FBS].fb_id,
+				      flags, data);
+		igt_assert_eq(ret, 0);
+
+		wait_flip_event(data);
+
+		gettimeofday(&end, NULL);
+		timersub(&end, &start, &diff);
+
+		if (diff.tv_sec == suspend_time) {
+			igt_info("system suspending\n");
+			igt_system_suspend_autoresume(SUSPEND_STATE_MEM, SUSPEND_TEST_NONE);
+			suspend_time = 0;
+		}
+
+		if (diff.tv_sec == resume_time) {
+			igt_info("system resuming\n");
+			igt_system_suspend_autoresume(SUSPEND_STATE_MEM, SUSPEND_TEST_NONE);
+			resume_time = 0;
+		}
+
+		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 data_t data;
 
 igt_main
@@ -750,6 +798,11 @@ igt_main
 		run_test(&data, test_crc);
 	}
 
+	igt_describe("Verify the async flip functionality after suspend and resume cycle");
+	igt_subtest_with_dynamic("async-flip-suspend-resume") {
+		run_test(&data, test_async_flip_suspend_resume);
+	}
+
 	igt_fixture {
 		for (i = 0; i < NUM_FBS; i++)
 			igt_remove_fb(data.drm_fd, &data.bufs[i]);
-- 
2.25.1