tests/kms_universal_plane: turn off pipe when primary plane is off

GPU drivers can reject when crtc is on and primary plane is off,
so turn crtc off with primary plane and turn it on afterwards.

Signed-off-by: Alex Hung <alex.hung@amd.com>
Reviewed-by: Mark Yacoub <markyacoub@chromium.org>

tests/kms_universal_plane.c

@@ -228,11 +228,14 @@ functional_test_pipe(data_t *data, enum pipe pipe, igt_output_t *output)
 	igt_pipe_crc_collect_crc(test.pipe_crc, &test.crc_7);
 
 	/* Step 11: Disable primary plane */
+	igt_output_set_pipe(output, PIPE_NONE);
+	igt_display_commit2(display, COMMIT_ATOMIC);
 	igt_plane_set_fb(primary, NULL);
 	igt_display_commit2(display, COMMIT_UNIVERSAL);
 
 	/* Step 12: Legacy modeset to yellow FB (CRC 8) */
 	igt_plane_set_fb(primary, &test.yellow_fb);
+	igt_output_set_pipe(output, pipe);
 	igt_display_commit2(display, COMMIT_LEGACY);
 	igt_pipe_crc_collect_crc(test.pipe_crc, &test.crc_8);
 
@@ -497,6 +500,8 @@ pageflip_test_pipe(data_t *data, enum pipe pipe, igt_output_t *output)
 	igt_display_commit2(&data->display, COMMIT_LEGACY);
 
 	/* Disable the primary plane */
+	igt_output_set_pipe(output, PIPE_NONE);
+	igt_display_commit2(&data->display, COMMIT_ATOMIC);
 	igt_plane_set_fb(primary, NULL);
 	igt_display_commit2(&data->display, COMMIT_UNIVERSAL);
 
@@ -506,6 +511,7 @@ pageflip_test_pipe(data_t *data, enum pipe pipe, igt_output_t *output)
 	 * Note that crtc->primary->fb = NULL causes flip to return EBUSY for
 	 * historical reasons...
 	 */
+	igt_output_set_pipe(output, pipe);
 	igt_assert(drmModePageFlip(data->drm_fd, output->config.crtc->crtc_id,
 				   test.red_fb.fb_id, 0, NULL) == -EBUSY);
 
@@ -520,9 +526,13 @@ pageflip_test_pipe(data_t *data, enum pipe pipe, igt_output_t *output)
 	 * completes, which we don't have a good way to specifically test for,
 	 * but at least we can make sure that nothing blows up.
 	 */
+	igt_output_set_pipe(output, pipe);
+	igt_display_commit2(&data->display, COMMIT_ATOMIC);
 	igt_assert(drmModePageFlip(data->drm_fd, output->config.crtc->crtc_id,
 				   test.red_fb.fb_id, DRM_MODE_PAGE_FLIP_EVENT,
 				   &test) == 0);
+	igt_output_set_pipe(output, PIPE_NONE);
+	igt_display_commit2(&data->display, COMMIT_ATOMIC);
 	igt_plane_set_fb(primary, NULL);
 	igt_display_commit2(&data->display, COMMIT_UNIVERSAL);