[Intel-gfx] [PATCH i-g-t v3 1/2] tests/debugfs_test: Try to light all outputs to increase chances of finding fails, v3.

[Maarten Lankhorst]

Make sure read_all_entries has all outputs possible enabled, but also
add a test that runs with all outputs disabled.

This will maximize coverage of debugfs reading, and allows the test not
to be dependent on fbcon for setup.

Changes since v1:
- Put framebuffers on all primary planes, to get a crc from i915_sink_src_eDP1.
Changes since v2:
- Use igt_output_get_plane_type, not igt_output_get_plane.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk> #v1
---
 tests/debugfs_test.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/tests/debugfs_test.c b/tests/debugfs_test.c
index 5e7805e1559e..c4f43a65b61b 100644
--- a/tests/debugfs_test.c
+++ b/tests/debugfs_test.c
@@ -78,15 +78,64 @@ static void read_and_discard_sysfs_entries(int path_fd)
 igt_main
 {
 	int fd = -1, debugfs;
+	igt_display_t display;
+	struct igt_fb fb[IGT_MAX_PIPES];
+	enum pipe pipe;
+
 	igt_skip_on_simulation();
 
 	igt_fixture {
 		fd = drm_open_driver_master(DRIVER_INTEL);
 		igt_require_gem(fd);
 		debugfs = igt_debugfs_dir(fd);
+
+		kmstest_set_vt_graphics_mode();
+		igt_display_init(&display, fd);
 	}
 
 	igt_subtest("read_all_entries") {
+		/* try to light all pipes */
+		for_each_pipe(&display, pipe) {
+			igt_output_t *output;
+
+			for_each_valid_output_on_pipe(&display, pipe, output) {
+				igt_plane_t *primary;
+				drmModeModeInfo *mode;
+
+				if (output->pending_pipe != PIPE_NONE)
+					continue;
+
+				igt_output_set_pipe(output, pipe);
+				primary = igt_output_get_plane_type(output, DRM_PLANE_TYPE_PRIMARY);
+				mode = igt_output_get_mode(output);
+				igt_create_pattern_fb(display.drm_fd,
+						      mode->hdisplay, mode->vdisplay,
+						      DRM_FORMAT_XRGB8888,
+						      LOCAL_DRM_FORMAT_MOD_NONE, &fb[pipe]);
+
+				igt_plane_set_fb(primary, &fb[pipe]);
+				break;
+			}
+		}
+
+		igt_display_commit2(&display, display.is_atomic ? COMMIT_ATOMIC : COMMIT_LEGACY);
+
+		read_and_discard_sysfs_entries(debugfs);
+	}
+
+	igt_subtest("read_all_entries_display_off") {
+		igt_output_t *output;
+		igt_plane_t *plane;
+
+		for_each_connected_output(&display, output)
+			igt_output_set_pipe(output, PIPE_NONE);
+
+		for_each_pipe(&display, pipe)
+			for_each_plane_on_pipe(&display, pipe, plane)
+				igt_plane_set_fb(plane, NULL);
+
+		igt_display_commit2(&display, display.is_atomic ? COMMIT_ATOMIC : COMMIT_LEGACY);
+
 		read_and_discard_sysfs_entries(debugfs);
 	}
 
@@ -112,6 +161,7 @@ igt_main
 	}
 
 	igt_fixture {
+		igt_display_fini(&display);
 		close(debugfs);
 		close(fd);
 	}
-- 
2.14.1