[igt-dev] [PATCH i-g-t] tests/kms_multipipe_modeset: Add test to validate max pipe configuration

[Karthik B S <karthik.b.s@intel.com>]

Added test to validate max pipe configuration for a platform.
In the test, the reference CRC is collected first by doing modeset
on all the outputs individually.Then a simultaneous modeset is
done on all the outputs and the CRC is collected. This is compared
with the reference CRC.

If the number of outputs connected is less than the number of pipes
supported by the platform, then the test skips.

This test is added to verify if the max pipe configuration for a
given platform is working fine. Even though there are other tests
which test multipipe configuration, they test some other functionalities
as well together with multipipe. This is a stand alone test that
intends to only verify simultaneous modeset at the max pipe configuration.

Signed-off-by: Karthik B S <karthik.b.s@intel.com>
---
 tests/Makefile.sources        |   1 +
 tests/kms_multipipe_modeset.c | 180 ++++++++++++++++++++++++++++++++++
 tests/meson.build             |   1 +
 3 files changed, 182 insertions(+)
 create mode 100644 tests/kms_multipipe_modeset.c

diff --git a/tests/Makefile.sources b/tests/Makefile.sources
index 4e44c98c..903c5671 100644
--- a/tests/Makefile.sources
+++ b/tests/Makefile.sources
@@ -60,6 +60,7 @@ TESTS_progs = \
 	kms_lease \
 	kms_legacy_colorkey \
 	kms_mmap_write_crc \
+	kms_multipipe_modeset \
 	kms_panel_fitting \
 	kms_pipe_b_c_ivb \
 	kms_pipe_crc_basic \
diff --git a/tests/kms_multipipe_modeset.c b/tests/kms_multipipe_modeset.c
new file mode 100644
index 00000000..11328165
--- /dev/null
+++ b/tests/kms_multipipe_modeset.c
@@ -0,0 +1,180 @@
+/*
+ * Copyright © 2020 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Author:
+ *  Karthik B S <karthik.b.s@intel.com>
+ */
+
+#include "igt.h"
+
+IGT_TEST_DESCRIPTION("Test simultaneous modeset on all the supported pipes");
+
+typedef struct {
+	int drm_fd;
+	igt_display_t display;
+	struct igt_fb fb;
+} data_t;
+
+static void run_test(data_t *data, int valid_outputs)
+{
+	igt_output_t *output;
+	igt_pipe_crc_t *pipe_crcs[IGT_MAX_PIPES] = { 0 };
+	igt_crc_t ref_crcs[IGT_MAX_PIPES], new_crcs[IGT_MAX_PIPES];
+	igt_display_t *display = &data->display;
+	int width = 0, height = 0, i, count = 0;
+	int output_to_pipe[valid_outputs];
+	igt_pipe_t *pipe;
+	igt_plane_t *plane;
+	drmModeModeInfo *mode;
+
+	for_each_connected_output(display, output) {
+		mode = igt_output_get_mode(output);
+		igt_assert(mode);
+
+		igt_output_set_pipe(output, PIPE_NONE);
+
+		width = max(width, mode->hdisplay);
+		height = max(height, mode->vdisplay);
+	}
+
+	igt_create_pattern_fb(data->drm_fd, width, height, DRM_FORMAT_XRGB8888,
+			      LOCAL_DRM_FORMAT_MOD_NONE, &data->fb);
+
+	/* Make pipe-ouput mapping which will be used unchanged across the test */
+	for_each_pipe(display, i) {
+		count = 0;
+		for_each_connected_output(display, output) {
+			if (igt_pipe_connector_valid(i, output) &&
+			    output->pending_pipe == PIPE_NONE) {
+				igt_output_set_pipe(output, i);
+				output_to_pipe[count] = i;
+				break;
+			}
+			count++;
+		}
+	}
+
+	/* Collect reference CRC by Committing individually on all outputs*/
+	for_each_pipe(display, i) {
+		pipe = &display->pipes[i];
+		plane = igt_pipe_get_plane_type(pipe, DRM_PLANE_TYPE_PRIMARY);
+
+		mode = NULL;
+
+		if (is_i915_device(display->drm_fd))
+			pipe_crcs[i] = igt_pipe_crc_new(display->drm_fd, i,
+							INTEL_PIPE_CRC_SOURCE_AUTO);
+
+		count = 0;
+		for_each_connected_output(display, output) {
+			if (output_to_pipe[count] == pipe->pipe) {
+				igt_output_set_pipe(output, i);
+				mode = igt_output_get_mode(output);
+				igt_assert(mode);
+			} else
+				igt_output_set_pipe(output, PIPE_NONE);
+			count++;
+		}
+
+		igt_plane_set_fb(plane, &data->fb);
+		igt_fb_set_size(&data->fb, plane, mode->hdisplay, mode->vdisplay);
+		igt_plane_set_size(plane, mode->hdisplay, mode->vdisplay);
+
+		igt_display_commit2(display, COMMIT_ATOMIC);
+		igt_pipe_crc_collect_crc(pipe_crcs[i], &ref_crcs[i]);
+	}
+
+	/* Simultaneously commit on all outputs */
+	for_each_pipe(display, i) {
+		pipe = &display->pipes[i];
+		plane = igt_pipe_get_plane_type(pipe, DRM_PLANE_TYPE_PRIMARY);
+
+		mode = NULL;
+
+		count = 0;
+		for_each_connected_output(display, output) {
+			if (output_to_pipe[count] == pipe->pipe) {
+				igt_output_set_pipe(output, i);
+				mode = igt_output_get_mode(output);
+				igt_assert(mode);
+				break;
+			}
+			count++;
+		}
+
+		igt_plane_set_fb(plane, &data->fb);
+		igt_fb_set_size(&data->fb, plane, mode->hdisplay, mode->vdisplay);
+		igt_plane_set_size(plane, mode->hdisplay, mode->vdisplay);
+	}
+
+	igt_display_commit2(display, COMMIT_ATOMIC);
+
+	/* CRC Verification */
+	for (count = 0; count < valid_outputs; count++) {
+		igt_pipe_crc_collect_crc(pipe_crcs[count], &new_crcs[count]);
+		igt_assert_crc_equal(&ref_crcs[count], &new_crcs[count]);
+	}
+
+	igt_plane_set_fb(plane, NULL);
+	igt_remove_fb(data->drm_fd, &data->fb);
+}
+
+static void test_multipipe(data_t *data)
+{
+	igt_output_t *output;
+	int valid_outputs = 0, num_pipes;
+
+	num_pipes = igt_display_get_n_pipes(&data->display);
+	for_each_connected_output(&data->display, output)
+		valid_outputs++;
+
+	igt_require_f(valid_outputs == num_pipes,
+		      "Number of connected outputs not equal to the "
+		      "number of pipes supported\n");
+
+	run_test(data, valid_outputs);
+}
+
+igt_main
+{
+	data_t data;
+	drmModeResPtr res;
+
+	igt_fixture {
+		data.drm_fd = drm_open_driver_master(DRIVER_ANY);
+		kmstest_set_vt_graphics_mode();
+		igt_display_require(&data.display, data.drm_fd);
+
+		res = drmModeGetResources(data.drm_fd);
+		igt_assert(res);
+
+		kmstest_unset_all_crtcs(data.drm_fd, res);
+	}
+
+	igt_describe("Verify if simultaneous modesets on all the supported "
+		     "pipes is successful. Validate using CRC verification");
+	igt_subtest("multipipe-modeset")
+		test_multipipe(&data);
+
+	igt_fixture
+		igt_display_fini(&data.display);
+}
diff --git a/tests/meson.build b/tests/meson.build
index e882f4dc..5044d131 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -44,6 +44,7 @@ test_progs = [
 	'kms_lease',
 	'kms_legacy_colorkey',
 	'kms_mmap_write_crc',
+	'kms_multipipe_modeset',
 	'kms_panel_fitting',
 	'kms_pipe_b_c_ivb',
 	'kms_pipe_crc_basic',
-- 
2.22.0

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