Nouveau - Mar 2020 - [PATCH i-g-t 2/2] tests/kms_pipe_crc_basic: Add disable-crc-after-crtc-pipe-* tests

From: Lyude Paul <lyude at redhat.com>

Signed-off-by: Lyude Paul <lyude at redhat.com>
---
 tests/kms_pipe_crc_basic.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/tests/kms_pipe_crc_basic.c b/tests/kms_pipe_crc_basic.c
index d169b7bd..f121e27e 100644
--- a/tests/kms_pipe_crc_basic.c
+++ b/tests/kms_pipe_crc_basic.c
@@ -65,15 +65,14 @@ static void test_bad_source(data_t *data)
 static void test_read_crc(data_t *data, enum pipe pipe, unsigned flags)
 {
 	igt_display_t *display = &data->display;
-	igt_output_t *output = igt_get_single_output_for_pipe(display, pipe);
+	igt_output_t *output;
 	igt_plane_t *primary;
 	drmModeModeInfo *mode;
 	igt_crc_t *crcs = NULL;
 	int c, j;
 
-	igt_skip_on(pipe >= data->display.n_pipes);
-	igt_require_f(output, "No connector found for pipe %s\n",
-		      kmstest_pipe_name(pipe));
+	igt_display_require_output_on_pipe(display, pipe);
+	output = igt_get_single_output_for_pipe(display, pipe);
 
 	igt_display_reset(display);
 	igt_output_set_pipe(output, pipe);
-- 
2.24.1

From: Lyude Paul <lyude at redhat.com>

I ended up hitting some bugs when writing nouveau's CRC implementation
due to incorrectly handling the situation where we disable CRCs on a
pipe that already been disabled, which ended up causing some other vague
igt issues when running certain tests in multi-mode.

So, let's add a trivial test for this scenario while we're at it.

Signed-off-by: Lyude Paul <lyude at redhat.com>
---
 tests/kms_pipe_crc_basic.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/tests/kms_pipe_crc_basic.c b/tests/kms_pipe_crc_basic.c
index f121e27e..4a58332a 100644
--- a/tests/kms_pipe_crc_basic.c
+++ b/tests/kms_pipe_crc_basic.c
@@ -152,6 +152,41 @@ static void test_read_crc(data_t *data, enum pipe pipe,
unsigned flags)
 	}
 }
 
+static void test_disable_crc_after_crtc(data_t *data, enum pipe pipe)
+{
+	igt_display_t *display = &data->display;
+	igt_output_t *output = igt_get_single_output_for_pipe(&data->display,
pipe);
+	igt_pipe_crc_t *pipe_crc = igt_pipe_crc_new(data->drm_fd, pipe,
"auto");
+	drmModeModeInfo *mode = igt_output_get_mode(output);
+	igt_crc_t crc[2];
+
+	igt_display_reset(display);
+	igt_output_set_pipe(output, pipe);
+
+	igt_create_color_fb(data->drm_fd,
+			    mode->hdisplay, mode->vdisplay,
+			    DRM_FORMAT_XRGB8888,
+			    LOCAL_DRM_FORMAT_MOD_NONE,
+			    0.0, 1.0, 0.0, &data->fb);
+	igt_plane_set_fb(igt_output_get_plane(output, 0), &data->fb);
+	igt_display_commit(display);
+
+	igt_pipe_crc_start(pipe_crc);
+	igt_pipe_crc_get_current(data->drm_fd, pipe_crc, &crc[0]);
+
+	kmstest_set_connector_dpms(data->drm_fd, output->config.connector,
+				   DRM_MODE_DPMS_OFF);
+	igt_pipe_crc_stop(pipe_crc);
+
+	kmstest_set_connector_dpms(data->drm_fd, output->config.connector,
+				   DRM_MODE_DPMS_ON);
+	igt_pipe_crc_collect_crc(pipe_crc, &crc[1]);
+	igt_assert_crc_equal(&crc[0], &crc[1]);
+
+	igt_pipe_crc_free(pipe_crc);
+	igt_remove_fb(data->drm_fd, &data->fb);
+}
+
 data_t data = {0, };
 
 igt_main
@@ -196,6 +231,9 @@ igt_main
 			test_read_crc(&data, pipe, 0);
 		}
 
+		igt_subtest_f("disable-crc-after-crtc-pipe-%s",
kmstest_pipe_name(pipe))
+			test_disable_crc_after_crtc(&data, pipe);
+
 		igt_subtest_f("hang-read-crc-pipe-%s", kmstest_pipe_name(pipe)) {
 			igt_hang_t hang = igt_allow_hang(data.drm_fd, 0, 0);
 
-- 
2.24.1