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charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit Hi Louis, On 3/16/2026 9:47 PM, Louis Chauvet wrote: > Adds two tests to validate unigraf communication. > > unigraf-connect checks if the device is connected and if the EDID is > properly applied. > > ungiraf-reconnect checks if the device can be connected/reconnected > using SST and MST configurations. > > Signed-off-by: Louis Chauvet > --- > tests/meson.build | 4 + > tests/unigraf/meson.build | 12 +++ > tests/unigraf/unigraf_connectivity.c | 138 +++++++++++++++++++++++++++++++++++ > 3 files changed, 154 insertions(+) > > diff --git a/tests/meson.build b/tests/meson.build > index cecb4a8ae34a..4d3399d0eff4 100644 > --- a/tests/meson.build > +++ b/tests/meson.build > @@ -475,6 +475,10 @@ foreach prog : intel_progs > endif > endforeach > > +if libtsi.found() > + subdir('unigraf') > +endif > + > if chamelium.found() > foreach prog : chamelium_progs > testexe = executable(prog, > diff --git a/tests/unigraf/meson.build b/tests/unigraf/meson.build > new file mode 100644 > index 000000000000..4ef8c32151e4 > --- /dev/null > +++ b/tests/unigraf/meson.build > @@ -0,0 +1,12 @@ > +unigraf_progs = [ > + 'unigraf_connectivity', > +] > + > +foreach prog : unigraf_progs > + test_executables += executable(prog, prog + '.c', > + dependencies : test_deps, > + install_dir : unigrafdir, > + install_rpath : unigraf_rpathdir, > + install : true) > + test_list += join_paths('unigraf', prog) > +endforeach > diff --git a/tests/unigraf/unigraf_connectivity.c b/tests/unigraf/unigraf_connectivity.c > new file mode 100644 > index 000000000000..b35149a4de9a > --- /dev/null > +++ b/tests/unigraf/unigraf_connectivity.c > @@ -0,0 +1,138 @@ > +// SPDX-License-Identifier: MIT > +/* > + * Copyright © 2026 Google > + * > + * Authors: > + * Louis Chauvet > + */ > + > +#include > +#include > +#include > +#include > + > +#include "drmtest.h" > +#include "igt_aux.h" > +#include "igt_core.h" > +#include "igt_kms.h" > +#include "unigraf/unigraf.h" > + > +/** > + * TEST: unigraf connectivity > + * Category: Core > + * Description: Testing connectivity with a unigraf device > + * > + * SUBTEST: unigraf-connect-edid > + * Description: Verify that the unigraf device is properly connected to the DUT > + * and that the correct EDID is detected and read. > + * > + * SUBTEST: unigraf-connect-mst > + * Description: Ensure that the DUT can correctly detect and handle the unigraf device > + * when it is configured to operate in MST mode. > + */ > + > +IGT_TEST_DESCRIPTION("Test basic unigraf connectivity"); > +int igt_main() > +{ > + int drm_fd; > + > + igt_fixture() { > + drm_fd = drm_open_driver_master(DRIVER_ANY); > + } > + > + igt_describe("Make sure that the unigraf device is connected to the DUT and EDID is properly detected"); > + igt_subtest("unigraf-connect-edid") { > + drmModePropertyBlobPtr edid_blob = NULL; > + struct igt_display display; > + uint64_t edid_blob_id; > + igt_output_t *output; > + uint32_t unigraf_edid_len; > + void *unigraf_edid; > + bool found = false; > + > + /* > + * Sleep are required to allow hardware to configure/detect the current > + * configuration > + */ > + unigraf_require_device(drm_fd); I think delays side need to check again. If i ran subtest alone observed new connector timeouts. Starting subtest: unigraf-connect-mst (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:(nil): Initialize unigraf... (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:(nil): No connector name configured, will autodetect. (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:(nil): MST usage not configured, using SST. (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:(nil): Detected unigraf device 0: UCD-500 [2607C673] (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Successfully opened the unigraf device 0. (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Role 0: DisplayPort Source and Sink (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Role 1: DisplayPort Source and USB-C, DP Alt Mode Sink (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Role 2: DisplayPort Sink and USB-C, DP Alt Mode Source (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Role 3: USB-C, DP Alt Mode Source and Sink (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Input 0: USB-C RX (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_FORCE_HOT_PLUG_STATE_W=0... (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_DPRX_LINK_FLAGS=86... (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_FORCE_HOT_PLUG_STATE_W=1... (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_DPRX_LINK_FLAGS=86... (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_FORCE_HOT_PLUG_STATE_W=0... (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_FORCE_HOT_PLUG_STATE_W=1... *(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: No newly connected connector, assuming that the unigraf is not connected.* (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_DPRX_HPD_FORCE=12... (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_DPRX_MST_SINK_COUNT=1... (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value read: TSI_DPRX_MST_SINK_COUNT=1 (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_DPRX_LINK_FLAGS=86... (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Write EDID for stream 3... (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_EDID_SELECT_STREAM=3... (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Writing 2048 bytes to 0x1100 (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Write EDID for stream 2... (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_EDID_SELECT_STREAM=2... (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Writing 2048 bytes to 0x1100 (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Write EDID for stream 1... (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_EDID_SELECT_STREAM=1... (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Writing 2048 bytes to 0x1100 (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Write EDID for stream 0... (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_EDID_SELECT_STREAM=0... (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Writing 2048 bytes to 0x1100 (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_FORCE_HOT_PLUG_STATE_W=1... (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_DPRX_MAX_LANES=4... (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_DPRX_MAX_LINK_RATE=30... (unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_DPRX_LINK_FLAGS=86... Test requirement not met in function unigraf_require_device, file ../lib/unigraf/unigraf.c:534: Test requirement: unigraf_open_device(drm_fd) > + unigraf_hpd_deassert(); > + sleep(igt_default_display_detect_timeout()); > + unigraf_set_sst(); > + unigraf_hpd_assert(); > + sleep(igt_default_display_detect_timeout()); > + igt_display_require(&display, drm_fd); > + sleep(igt_default_display_detect_timeout()); > + > + unigraf_edid = unigraf_read_edid(0, &unigraf_edid_len); > + > + for_each_connected_output(&display, output) { > + if (output->config.connector->connector_type == > + DRM_MODE_CONNECTOR_DisplayPort) { > + igt_assert(kmstest_get_property(drm_fd, > + output->config.connector->connector_id, > + DRM_MODE_OBJECT_CONNECTOR, "EDID", > + NULL, &edid_blob_id, NULL)); > + edid_blob = drmModeGetPropertyBlob(drm_fd, edid_blob_id); > + if (!edid_blob) > + continue; > + > + if (!memcmp(unigraf_edid, edid_blob->data, > + min(edid_blob->length, unigraf_edid_len))) > + found = true; > + > + drmModeFreePropertyBlob(edid_blob); > + > + if (found) > + break; > + } > + } > + igt_assert_f(found, "No output with the correct EDID was found\n"); > + > + free(unigraf_edid); > + } > + > + igt_describe("Make sure that the unigraf device can be used as a MST device"); > + igt_subtest("unigraf-connect-mst") { > + int newly_connected_count, already_connected_count, diff_len; > + uint32_t *newly_connected = NULL, *already_connected = NULL, *diff = NULL; > + int max_count; > + > + unigraf_require_device(drm_fd); > + max_count = unigraf_get_mst_stream_max_count(); > + > + unigraf_hpd_deassert(); > + > + already_connected_count = igt_get_connected_connectors(drm_fd, &already_connected); > + > + igt_debug("Already connected count: %d\n", already_connected_count); > + > + // i = 0 is SST so we need to process max_count + 1 streams > + for (int i = 0; i <= max_count; i++) { > + unigraf_hpd_deassert(); > + // Let the hardware detect the new state > + sleep(igt_default_display_detect_timeout()); > + > + unigraf_set_mst_stream_count(max(i, 1)); > + if (!i) > + unigraf_set_sst(); > + else > + unigraf_set_mst(); > + > + unigraf_hpd_assert(); > + // Let the hardware detect the new state > + sleep(igt_default_display_detect_timeout()); > + > + newly_connected_count = kms_wait_for_new_connectors(&newly_connected, > + already_connected, > + already_connected_count, > + drm_fd); > + > + diff_len = get_array_diff(newly_connected, newly_connected_count, > + already_connected, already_connected_count, &diff); > + > + igt_assert_f(diff_len == max(i, 1), > + "Invalid connected connector count, expected %d found %d\n", > + max(i, 1), diff_len); > + } > + } > +} > --------------jAzkDPgZnkF5dZbmwcM95Sam Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: 8bit

Hi Louis,

On 3/16/2026 9:47 PM, Louis Chauvet wrote:
Adds two tests to validate unigraf communication.

unigraf-connect checks if the device is connected and if the EDID is
properly applied.

ungiraf-reconnect checks if the device can be connected/reconnected
using SST and MST configurations.

Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com>
---
 tests/meson.build                    |   4 +
 tests/unigraf/meson.build            |  12 +++
 tests/unigraf/unigraf_connectivity.c | 138 +++++++++++++++++++++++++++++++++++
 3 files changed, 154 insertions(+)

diff --git a/tests/meson.build b/tests/meson.build
index cecb4a8ae34a..4d3399d0eff4 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -475,6 +475,10 @@ foreach prog : intel_progs
 	endif
 endforeach
 
+if libtsi.found()
+	subdir('unigraf')
+endif
+
 if chamelium.found()
 	foreach prog : chamelium_progs
 		testexe = executable(prog,
diff --git a/tests/unigraf/meson.build b/tests/unigraf/meson.build
new file mode 100644
index 000000000000..4ef8c32151e4
--- /dev/null
+++ b/tests/unigraf/meson.build
@@ -0,0 +1,12 @@
+unigraf_progs = [
+	'unigraf_connectivity',
+]
+
+foreach prog : unigraf_progs
+	test_executables += executable(prog, prog + '.c',
+				       dependencies : test_deps,
+				       install_dir : unigrafdir,
+				       install_rpath : unigraf_rpathdir,
+				       install : true)
+	test_list += join_paths('unigraf', prog)
+endforeach
diff --git a/tests/unigraf/unigraf_connectivity.c b/tests/unigraf/unigraf_connectivity.c
new file mode 100644
index 000000000000..b35149a4de9a
--- /dev/null
+++ b/tests/unigraf/unigraf_connectivity.c
@@ -0,0 +1,138 @@
+// SPDX-License-Identifier: MIT
+/*
+ * Copyright © 2026 Google
+ *
+ * Authors:
+ *   Louis Chauvet <louis.chauvet@bootlin.com>
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <xf86drmMode.h>
+
+#include "drmtest.h"
+#include "igt_aux.h"
+#include "igt_core.h"
+#include "igt_kms.h"
+#include "unigraf/unigraf.h"
+
+/**
+ * TEST: unigraf connectivity
+ * Category: Core
+ * Description: Testing connectivity with a unigraf device
+ *
+ * SUBTEST: unigraf-connect-edid
+ * Description: Verify that the unigraf device is properly connected to the DUT
+ *              and that the correct EDID is detected and read.
+ *
+ * SUBTEST: unigraf-connect-mst
+ * Description: Ensure that the DUT can correctly detect and handle the unigraf device
+ *              when it is configured to operate in MST mode.
+ */
+
+IGT_TEST_DESCRIPTION("Test basic unigraf connectivity");
+int igt_main()
+{
+	int drm_fd;
+
+	igt_fixture() {
+		drm_fd = drm_open_driver_master(DRIVER_ANY);
+	}
+
+	igt_describe("Make sure that the unigraf device is connected to the DUT and EDID is properly detected");
+	igt_subtest("unigraf-connect-edid") {
+		drmModePropertyBlobPtr edid_blob = NULL;
+		struct igt_display display;
+		uint64_t edid_blob_id;
+		igt_output_t *output;
+		uint32_t unigraf_edid_len;
+		void *unigraf_edid;
+		bool found = false;
+
+		/*
+		 * Sleep are required to allow hardware to configure/detect the current
+		 * configuration
+		 */
+		unigraf_require_device(drm_fd);

I think delays side need to check again. If i ran subtest alone observed new connector timeouts.

Starting subtest: unigraf-connect-mst
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:(nil): Initialize unigraf...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:(nil): No connector name configured, will autodetect.
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:(nil): MST usage not configured, using SST.
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:(nil): Detected unigraf device 0: UCD-500 [2607C673]
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Successfully opened the unigraf device 0.
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Role 0: DisplayPort Source and Sink
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Role 1: DisplayPort Source and USB-C, DP Alt Mode Sink
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Role 2: DisplayPort Sink and USB-C, DP Alt Mode Source
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Role 3: USB-C, DP Alt Mode Source and Sink
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Input 0: USB-C RX
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_FORCE_HOT_PLUG_STATE_W=0...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_DPRX_LINK_FLAGS=86...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_FORCE_HOT_PLUG_STATE_W=1...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_DPRX_LINK_FLAGS=86...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_FORCE_HOT_PLUG_STATE_W=0...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_FORCE_HOT_PLUG_STATE_W=1...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: No newly connected connector, assuming that the unigraf is not connected.
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_DPRX_HPD_FORCE=12...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_DPRX_MST_SINK_COUNT=1...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value read: TSI_DPRX_MST_SINK_COUNT=1
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_DPRX_LINK_FLAGS=86...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Write EDID for stream 3...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_EDID_SELECT_STREAM=3...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Writing 2048 bytes to 0x1100
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Write EDID for stream 2...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_EDID_SELECT_STREAM=2...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Writing 2048 bytes to 0x1100
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Write EDID for stream 1...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_EDID_SELECT_STREAM=1...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Writing 2048 bytes to 0x1100
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Write EDID for stream 0...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_EDID_SELECT_STREAM=0...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Writing 2048 bytes to 0x1100
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_FORCE_HOT_PLUG_STATE_W=1...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_DPRX_MAX_LANES=4...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_DPRX_MAX_LINK_RATE=30...
(unigraf_connectivity:7675) unigraf/unigraf-DEBUG: TSI:0x630f991906c0: Value write: TSI_DPRX_LINK_FLAGS=86...
Test requirement not met in function unigraf_require_device, file ../lib/unigraf/unigraf.c:534:
Test requirement: unigraf_open_device(drm_fd)

+		unigraf_hpd_deassert();
+		sleep(igt_default_display_detect_timeout());
+		unigraf_set_sst();
+		unigraf_hpd_assert();
+		sleep(igt_default_display_detect_timeout());
+		igt_display_require(&display, drm_fd);
+		sleep(igt_default_display_detect_timeout());
+
+		unigraf_edid = unigraf_read_edid(0, &unigraf_edid_len);
+
+		for_each_connected_output(&display, output) {
+			if (output->config.connector->connector_type ==
+			    DRM_MODE_CONNECTOR_DisplayPort) {
+				igt_assert(kmstest_get_property(drm_fd,
+								output->config.connector->connector_id,
+								DRM_MODE_OBJECT_CONNECTOR, "EDID",
+								NULL, &edid_blob_id, NULL));
+				edid_blob = drmModeGetPropertyBlob(drm_fd, edid_blob_id);
+				if (!edid_blob)
+					continue;
+
+				if (!memcmp(unigraf_edid, edid_blob->data,
+					    min(edid_blob->length, unigraf_edid_len)))
+					found = true;
+
+				drmModeFreePropertyBlob(edid_blob);
+
+				if (found)
+					break;
+			}
+		}
+		igt_assert_f(found, "No output with the correct EDID was found\n");
+
+		free(unigraf_edid);
+	}
+
+	igt_describe("Make sure that the unigraf device can be used as a MST device");
+	igt_subtest("unigraf-connect-mst") {
+		int newly_connected_count, already_connected_count, diff_len;
+		uint32_t *newly_connected = NULL, *already_connected = NULL, *diff = NULL;
+		int max_count;
+
+		unigraf_require_device(drm_fd);
+		max_count = unigraf_get_mst_stream_max_count();
+
+		unigraf_hpd_deassert();
+
+		already_connected_count = igt_get_connected_connectors(drm_fd, &already_connected);
+
+		igt_debug("Already connected count: %d\n", already_connected_count);
+
+		// i = 0 is SST so we need to process max_count + 1 streams
+		for (int i = 0; i <= max_count; i++) {
+			unigraf_hpd_deassert();
+			// Let the hardware detect the new state
+			sleep(igt_default_display_detect_timeout());
+
+			unigraf_set_mst_stream_count(max(i, 1));
+			if (!i)
+				unigraf_set_sst();
+			else
+				unigraf_set_mst();
+
+			unigraf_hpd_assert();
+			// Let the hardware detect the new state
+			sleep(igt_default_display_detect_timeout());
+
+			newly_connected_count = kms_wait_for_new_connectors(&newly_connected,
+									    already_connected,
+									    already_connected_count,
+									    drm_fd);
+
+			diff_len = get_array_diff(newly_connected, newly_connected_count,
+						  already_connected, already_connected_count, &diff);
+
+			igt_assert_f(diff_len == max(i, 1),
+				     "Invalid connected connector count, expected %d found %d\n",
+				     max(i, 1), diff_len);
+		}
+	}
+}
--------------jAzkDPgZnkF5dZbmwcM95Sam--