[igt-dev] [PATCH i-g-t 1/2] tests: Add feature_discovery

[Arkadiusz Hiler]

The main reason for adding this test is automatic tagging of the
machines for the purposes of CI and other automation systems.

The subtest are not doing much - they just check the presence of
interfaces and available hardware to make sure certain "feature" is
there and ready to be tested properly.

The subtests should only pass or skip.

Any failures or flip-floppers are reason for serious concern.

Cc: Martin Peres <martin.peres at intel.com>
Cc: Petri Latvala <petri.latvala at intel.com>
Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler at intel.com>
---
 tests/feature_discovery.c | 111 ++++++++++++++++++++++++++++++++++++++
 tests/meson.build         |   1 +
 2 files changed, 112 insertions(+)
 create mode 100644 tests/feature_discovery.c

diff --git a/tests/feature_discovery.c b/tests/feature_discovery.c
new file mode 100644
index 00000000..32ef9df7
--- /dev/null
+++ b/tests/feature_discovery.c
@@ -0,0 +1,111 @@
+/*
+ * 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.
+ *
+ */
+
+#include "igt.h"
+#include "igt_chamelium.h"
+#include "igt_kms.h"
+#include "igt_psr.h"
+#include "igt_sysfs.h"
+
+static int fd;
+static int debugfs_fd;
+static igt_display_t display;
+
+IGT_TEST_DESCRIPTION("A metatest that checks for \"features\" presence. "
+		     "The subtests here should only skip or pass, "
+		     "anything else means we have a serious problem.");
+igt_main {
+
+	igt_fixture {
+		fd = drm_open_driver_master(DRIVER_ANY);
+		debugfs_fd = igt_debugfs_dir(fd);
+	}
+
+	igt_subtest_group {
+
+		igt_fixture {
+			igt_display_require(&display, fd);
+		}
+
+		igt_describe("Make sure that we have display support with some outputs connected.");
+		igt_subtest("display") {
+			/* will skip because of the fixture */
+		}
+
+		igt_subtest_group {
+			volatile int output_count = 0;
+			igt_output_t *output;
+			enum pipe pipe;
+
+			igt_fixture {
+				/* this is what most of the 2x tests are doing */
+				for_each_pipe(&display, pipe) {
+					for_each_valid_output_on_pipe(&display, pipe, output) {
+						if (output->pending_pipe == PIPE_NONE) {
+							igt_output_set_pipe(output, pipe);
+							output_count++;
+							break;
+						}
+					}
+				}
+
+				for (int i = 0; i < display.n_outputs; i++) {
+					igt_output_set_pipe(&display.outputs[i], PIPE_NONE);
+				}
+			}
+
+			igt_describe("Make sure that we can use at least 2 outputs at the same time.");
+			igt_subtest("display-2x") {
+				igt_require(output_count >= 2);
+			}
+
+			igt_describe("Make sure that we can use at least 3 outputs at the same time.");
+			igt_subtest("display-3x") {
+				igt_require(output_count >= 3);
+			}
+
+			igt_describe("Make sure that we can use at least 4 outputs at the same time.");
+			igt_subtest("display-4x") {
+				igt_require(output_count >= 4);
+			}
+		}
+
+		igt_describe("Make sure that Chamelium is configured and reachable.");
+		igt_subtest("chamelium") {
+			struct chamelium *chamelium = chamelium_init(fd);
+			igt_require(chamelium);
+			chamelium_deinit(chamelium);
+		}
+
+		igt_describe("Make sure that we have eDP panel with PSR1 support.");
+		igt_subtest("psr1") {
+			igt_require(psr_sink_support(fd, debugfs_fd, PSR_MODE_1));
+		}
+
+		igt_describe("Make sure that we have eDP panel with PSR2 support.");
+		igt_subtest("psr2") {
+			igt_require(psr_sink_support(fd, debugfs_fd, PSR_MODE_2));
+		}
+	}
+}
diff --git a/tests/meson.build b/tests/meson.build
index ca792ed8..d7f3b373 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -13,6 +13,7 @@ test_progs = [
 	'drm_mm',
 	'drm_read',
 	'fbdev',
+	'feature_discovery',
 	'kms_3d',
 	'kms_addfb_basic',
 	'kms_atomic',
-- 
2.25.4