[Intel-gfx] [PATCH i-g-t] tests/chamelium: Add common suspend and hibernate tests for DP and HDMI

[Paul Kocialkowski]

This adds two new tests: common-hpd-after-suspend and
common-hpd-after-hibernate that are aimed at testing HPD change during
suspend/hibernate for both DP and HDMI, at the same time.

The interest in bringing this test up is to reduce the time spent in
testing, with the downside of less precision regarding the test's
outcome. The per-connector tests are still available to get a more
precise idea of which connector causes a failure, when that happens.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski at linux.intel.com>
---
 tests/chamelium.c | 86 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)

diff --git a/tests/chamelium.c b/tests/chamelium.c
index 76b14e95..d569c8ee 100644
--- a/tests/chamelium.c
+++ b/tests/chamelium.c
@@ -241,6 +241,80 @@ test_suspend_resume_hpd(data_t *data, struct chamelium_port *port,
 }
 
 static void
+test_suspend_resume_hpd_common(data_t *data, enum igt_suspend_state state,
+			       enum igt_suspend_test test)
+{
+	struct udev_monitor *mon = igt_watch_hotplug();
+	struct chamelium_port *port;
+	int p;
+
+	for (p = 0; p < data->port_count; p++) {
+		port = data->ports[p];
+		if (chamelium_port_get_type(port) == DRM_MODE_CONNECTOR_VGA)
+			continue;
+
+		reset_state(data, port);
+
+		igt_debug("Testing port %s\n", chamelium_port_get_name(port));
+	}
+
+	igt_set_autoresume_delay(SUSPEND_RESUME_DELAY);
+	igt_flush_hotplugs(mon);
+
+	/* Make sure we notice new connectors after resuming */
+	for (p = 0; p < data->port_count; p++) {
+		port = data->ports[p];
+		if (chamelium_port_get_type(port) == DRM_MODE_CONNECTOR_VGA)
+			continue;
+
+		chamelium_async_hpd_pulse_start(data->chamelium, port, false,
+						SUSPEND_RESUME_DELAY / 2);
+	}
+
+	igt_system_suspend_autoresume(state, test);
+	chamelium_async_hpd_pulse_finish(data->chamelium);
+
+	igt_assert(igt_hotplug_detected(mon, HOTPLUG_TIMEOUT));
+
+	for (p = 0; p < data->port_count; p++) {
+		port = data->ports[p];
+		if (chamelium_port_get_type(port) == DRM_MODE_CONNECTOR_VGA)
+			continue;
+
+		igt_assert_eq(reprobe_connector(data, port),
+			      DRM_MODE_CONNECTED);
+	}
+
+	igt_flush_hotplugs(mon);
+
+	/* Now make sure we notice disconnected connectors after resuming */
+	for (p = 0; p < data->port_count; p++) {
+		port = data->ports[p];
+		if (chamelium_port_get_type(port) == DRM_MODE_CONNECTOR_VGA)
+			continue;
+
+		chamelium_async_hpd_pulse_start(data->chamelium, port, true,
+						SUSPEND_RESUME_DELAY / 2);
+	}
+
+	igt_system_suspend_autoresume(state, test);
+	chamelium_async_hpd_pulse_finish(data->chamelium);
+
+	igt_assert(igt_hotplug_detected(mon, HOTPLUG_TIMEOUT));
+
+	for (p = 0; p < data->port_count; p++) {
+		port = data->ports[p];
+		if (chamelium_port_get_type(port) == DRM_MODE_CONNECTOR_VGA)
+			continue;
+
+		igt_assert_eq(reprobe_connector(data, port),
+			      DRM_MODE_DISCONNECTED);
+	}
+
+	igt_cleanup_hotplug(mon);
+}
+
+static void
 test_suspend_resume_edid_change(data_t *data, struct chamelium_port *port,
 				enum igt_suspend_state state,
 				enum igt_suspend_test test,
@@ -750,6 +824,18 @@ igt_main
 			test_hpd_without_ddc(&data, port);
 	}
 
+	igt_subtest_group {
+		igt_subtest("common-hpd-after-suspend")
+			test_suspend_resume_hpd_common(&data,
+						       SUSPEND_STATE_MEM,
+						       SUSPEND_TEST_NONE);
+
+		igt_subtest("common-hpd-after-hibernate")
+			test_suspend_resume_hpd_common(&data,
+						       SUSPEND_STATE_DISK,
+						       SUSPEND_TEST_DEVICES);
+	}
+
 	igt_fixture {
 		close(data.drm_fd);
 	}
-- 
2.13.1