[igt-dev] [PATCH 10/10] tests/kms_plane_multiple/tgl: Set highest mode for PCU messaging test

[Lucas De Marchi <lucas.demarchi@intel.com>]

From: Karthik B S <karthik.b.s@intel.com>

Set the highest mode allows for the stress test for PCU messaging, as
the BW requirement is the highest in this case.

Cc: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Karthik B S <karthik.b.s@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
---
 tests/kms_plane_multiple.c | 68 ++++++++++++++++++++++++++++++++------
 1 file changed, 58 insertions(+), 10 deletions(-)

diff --git a/tests/kms_plane_multiple.c b/tests/kms_plane_multiple.c
index 2c726fda..1bf44005 100644
--- a/tests/kms_plane_multiple.c
+++ b/tests/kms_plane_multiple.c
@@ -285,16 +285,45 @@ prepare_planes(data_t *data, enum pipe pipe_id, color_t *color,
 	free((void*)suffle);
 }
 
-/*
- * Multiple plane position test.
- *   - We start by grabbing a reference CRC of a full blue fb being scanned
- *     out on the primary plane
- *   - Then we scannout number of planes:
- *      * the primary plane uses a blue fb with a black rectangle holes
- *      * planes, on top of the primary plane, with a blue fb that is set-up
- *        to cover the black rectangles of the primary plane
- *     The resulting CRC should be identical to the reference CRC
- */
+static drmModeModeInfo
+get_highest_mode(int drmfd, int connector_id)
+{
+	drmModeRes *mode_resources = drmModeGetResources(drmfd);
+	drmModeModeInfo highestmode;
+	drmModeConnector *connector;
+	int i;
+	bool highestmodefound = false;
+
+	igt_require(mode_resources);
+
+	for (i = 0; i < mode_resources->count_connectors; i++) {
+		connector = drmModeGetConnectorCurrent(drmfd,
+						mode_resources->connectors[i]);
+		if (!connector) {
+			igt_warn("could not get connector %i: %s\n",
+				mode_resources->connectors[i], strerror(errno));
+			continue;
+		}
+
+		if (connector->connector_id != connector_id)
+			continue;
+
+		if (!connector->count_modes)
+			continue;
+
+		/* First mode has the highest pixel rate */
+		highestmodefound = true;
+		highestmode = connector->modes[0];
+		break;
+	}
+
+	if (connector)
+		drmModeFreeConnector(connector);
+	drmModeFreeResources(mode_resources);
+
+	igt_require(highestmodefound);
+	return highestmode;
+}
 
 static void
 prepare_planes2(data_t *data, enum pipe pipe_id, color_t *color,
@@ -366,11 +395,22 @@ prepare_planes2(data_t *data, enum pipe pipe_id, color_t *color,
 	}
 }
 
+/*
+ * Multiple plane position test.
+ *   - We start by grabbing a reference CRC of a full blue fb being scanned
+ *     out on the primary plane
+ *   - Then we scannout number of planes:
+ *      * the primary plane uses a blue fb with a black rectangle holes
+ *      * planes, on top of the primary plane, with a blue fb that is set-up
+ *        to cover the black rectangles of the primary plane
+ *     The resulting CRC should be identical to the reference CRC
+ */
 static void
 test_plane_position_with_output(data_t *data, enum pipe pipe,
 				igt_output_t *output, int n_planes,
 				uint64_t tiling)
 {
+	drmModeModeInfo mode_highres;
 	color_t blue  = { 0.0f, 0.0f, 1.0f };
 	igt_crc_t crc;
 	igt_plane_t *plane;
@@ -392,6 +432,11 @@ test_plane_position_with_output(data_t *data, enum pipe pipe,
 	test_init(data, pipe, n_planes);
 
 	if (data->flag == TEST_PCU_ALGO) {
+		mode_highres = get_highest_mode(data->drm_fd, output->id);
+
+		/* switch to highest resolution */
+		igt_output_override_mode(output, &mode_highres);
+
 		for (i = BW_PRIMARY_LOW; i < BW_INVALID; i++) {
 			if (i == BW_PRIMARY_LOW || i == BW_PRIMARY_LOW2)
 				get_reference_crc(data, output, pipe, &blue,
@@ -429,6 +474,9 @@ test_plane_position_with_output(data_t *data, enum pipe pipe,
 
 			igt_assert_crc_equal(&data->ref_crc, &crc);
 		}
+
+		/* switch back to default mode */
+		igt_output_override_mode(output, NULL);
 	} else {
 		i = 0;
 		get_reference_crc(data, output, pipe, &blue, tiling, FULL_SCREEN);
-- 
2.21.0

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