[igt-dev] [PATCH i-g-t v8] tests/kms_display_modes: Add test for extended mode

[Jeevan B <jeevan.b@intel.com>]

Add test for validation of extended mode.

v2: - make subtest dynamic
    - rename testname
    - rename and delete unsed variable
v3: - break the loop after second output is found
v4: - add logic to set valid pipes for dynamic test

Signed-off-by: Jeevan B <jeevan.b@intel.com>
Reviewed-by: Karthik B S <karthik.b.s@intel.com>
---
 tests/kms_display_modes.c | 173 ++++++++++++++++++++++++++++++++++++++
 tests/meson.build         |   1 +
 2 files changed, 174 insertions(+)
 create mode 100644 tests/kms_display_modes.c

diff --git a/tests/kms_display_modes.c b/tests/kms_display_modes.c
new file mode 100644
index 00000000..b96eb4d4
--- /dev/null
+++ b/tests/kms_display_modes.c
@@ -0,0 +1,173 @@
+/*
+ * Copyright © 2022 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:
+ *  Jeevan B <jeevan.b@intel.com>
+ */
+
+#include "igt.h"
+
+IGT_TEST_DESCRIPTION("Test Display Modes");
+
+typedef struct {
+	int drm_fd;
+	igt_display_t display;
+	int n_pipes;
+} data_t;
+
+static void run_extendedmode_basic(data_t *data, int pipe1, int pipe2)
+{
+	struct igt_fb fb, fbs[2];
+	drmModeModeInfo *mode[2];
+	igt_output_t *output, *extended_output[2];
+	igt_display_t *display = &data->display;
+	igt_plane_t *plane[2];
+	igt_pipe_crc_t *pipe_crc[2] = { 0 };
+	igt_crc_t ref_crc[2], crc[2];
+	int count = 0, width, height;
+	cairo_t *cr;
+
+	for_each_connected_output(display, output) {
+		extended_output[count] = output;
+		count++;
+
+		if (count > 1)
+			break;
+	}
+
+	igt_output_set_pipe(extended_output[0], pipe1);
+	igt_output_set_pipe(extended_output[1], pipe2);
+
+	mode[0] = igt_output_get_mode(extended_output[0]);
+	mode[1] = igt_output_get_mode(extended_output[1]);
+
+	pipe_crc[0] = igt_pipe_crc_new(data->drm_fd, pipe1, INTEL_PIPE_CRC_SOURCE_AUTO);
+	pipe_crc[1] = igt_pipe_crc_new(data->drm_fd, pipe2, INTEL_PIPE_CRC_SOURCE_AUTO);
+
+	igt_create_color_fb(data->drm_fd, mode[0]->hdisplay, mode[0]->vdisplay,
+			     DRM_FORMAT_XRGB8888, 0, 1, 0, 0, &fbs[0]);
+	igt_create_color_fb(data->drm_fd, mode[1]->hdisplay, mode[1]->vdisplay,
+			     DRM_FORMAT_XRGB8888, 0, 0, 0, 1, &fbs[1]);
+
+	plane[0] = igt_pipe_get_plane_type(&display->pipes[pipe1], DRM_PLANE_TYPE_PRIMARY);
+	plane[1] = igt_pipe_get_plane_type(&display->pipes[pipe2], DRM_PLANE_TYPE_PRIMARY);
+
+	igt_plane_set_fb(plane[0], &fbs[0]);
+	igt_fb_set_size(&fbs[0], plane[0], mode[0]->hdisplay, mode[0]->vdisplay);
+	igt_plane_set_size(plane[0], mode[0]->hdisplay, mode[0]->vdisplay);
+
+	igt_plane_set_fb(plane[1], &fbs[1]);
+	igt_fb_set_size(&fbs[1], plane[1], mode[1]->hdisplay, mode[1]->vdisplay);
+	igt_plane_set_size(plane[1], mode[1]->hdisplay, mode[1]->vdisplay);
+
+	igt_display_commit2(display, COMMIT_ATOMIC);
+
+	igt_pipe_crc_collect_crc(pipe_crc[0], &ref_crc[0]);
+	igt_pipe_crc_collect_crc(pipe_crc[1], &ref_crc[1]);
+
+	/*Create a big framebuffer and display it on 2 monitors*/
+	width = mode[0]->hdisplay + mode[1]->hdisplay;
+	height = max(mode[0]->vdisplay, mode[1]->vdisplay);
+
+	igt_create_fb(data->drm_fd, width, height, DRM_FORMAT_XRGB8888, 0, &fb);
+	cr = igt_get_cairo_ctx(data->drm_fd, &fb);
+	igt_paint_color(cr, 0, 0, mode[0]->hdisplay, mode[0]->vdisplay, 1, 0, 0);
+	igt_paint_color(cr, mode[0]->hdisplay, 0, mode[1]->hdisplay, mode[1]->vdisplay, 0, 0, 1);
+	igt_put_cairo_ctx(cr);
+
+	igt_plane_set_fb(plane[0], &fb);
+	igt_fb_set_position(&fb, plane[0], 0, 0);
+	igt_fb_set_size(&fb, plane[0], mode[0]->hdisplay, mode[0]->vdisplay);
+
+	igt_plane_set_fb(plane[1], &fb);
+	igt_fb_set_position(&fb, plane[1], mode[0]->hdisplay, 0);
+	igt_fb_set_size(&fb, plane[1], mode[1]->hdisplay, mode[1]->vdisplay);
+
+	igt_display_commit2(display, COMMIT_ATOMIC);
+
+	igt_pipe_crc_collect_crc(pipe_crc[0], &crc[0]);
+	igt_pipe_crc_collect_crc(pipe_crc[1], &crc[1]);
+
+	/*Clean up*/
+	igt_remove_fb(data->drm_fd, &fbs[0]);
+	igt_remove_fb(data->drm_fd, &fbs[1]);
+	igt_remove_fb(data->drm_fd, &fb);
+
+	igt_pipe_crc_free(pipe_crc[0]);
+	igt_pipe_crc_free(pipe_crc[1]);
+
+	igt_output_set_pipe(extended_output[0], PIPE_NONE);
+	igt_output_set_pipe(extended_output[1], PIPE_NONE);
+
+	igt_plane_set_fb(igt_pipe_get_plane_type(&display->pipes[pipe1],
+			  DRM_PLANE_TYPE_PRIMARY), NULL);
+	igt_plane_set_fb(igt_pipe_get_plane_type(&display->pipes[pipe2],
+			  DRM_PLANE_TYPE_PRIMARY), NULL);
+	igt_display_commit2(display, COMMIT_ATOMIC);
+
+	/*Compare CRC*/
+	igt_assert_crc_equal(&crc[0], &ref_crc[0]);
+	igt_assert_crc_equal(&crc[1], &ref_crc[1]);
+}
+
+igt_main
+{
+	data_t data;
+	int valid_output = 0, i, j = 0;
+	igt_output_t *output;
+	int pipe[IGT_MAX_PIPES];
+
+	igt_fixture {
+		data.drm_fd = drm_open_driver_master(DRIVER_ANY);
+		kmstest_set_vt_graphics_mode();
+		igt_display_require(&data.display, data.drm_fd);
+
+		for_each_connected_output(&data.display, output) {
+			valid_output++;
+
+			if (valid_output > 1)
+				break;
+		}
+
+		data.n_pipes = 0;
+		for_each_pipe(&data.display, i) {
+			data.n_pipes++;
+			pipe[j] = i;
+			j++;
+		}
+
+		igt_require_f(valid_output > 1, "No valid Second output found\n");
+	}
+
+	igt_describe("Test for validating display extended mode with a pair of connected displays");
+	igt_subtest_with_dynamic("extended-mode-basic") {
+		for (i = 0; i < data.n_pipes - 1; i++) {
+			igt_dynamic_f("pipe-%s%s", kmstest_pipe_name(pipe[i]),
+					kmstest_pipe_name(pipe[i+1]));
+			run_extendedmode_basic(&data, pipe[i], pipe[i+1]);
+		}
+	}
+
+	igt_fixture {
+		igt_display_fini(&data.display);
+	}
+}
diff --git a/tests/meson.build b/tests/meson.build
index 7003d064..3dbba7a1 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -26,6 +26,7 @@ test_progs = [
 	'kms_cursor_edge_walk',
 	'kms_cursor_legacy',
 	'kms_dither',
+	'kms_display_modes',
 	'kms_dp_aux_dev',
 	'kms_dp_tiled_display',
 	'kms_flip',
-- 
2.17.1