[PATCH v2 4/4] tests/amdgpu/amd_psr: Add support for `power saving policy` property

[Mario Limonciello]

Verify that the property has disabled PSR
---
 tests/amdgpu/amd_psr.c | 74 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)

diff --git a/tests/amdgpu/amd_psr.c b/tests/amdgpu/amd_psr.c
index 9da161a09..a9f4a6aa5 100644
--- a/tests/amdgpu/amd_psr.c
+++ b/tests/amdgpu/amd_psr.c
@@ -338,6 +338,78 @@ static void run_check_psr(data_t *data, bool test_null_crtc) {
 	test_fini(data);
 }
 
+static void psr_forbidden(data_t *data)
+{
+	int edp_idx, ret, i, psr_state;
+	igt_fb_t ref_fb, ref_fb2;
+	igt_fb_t *flip_fb;
+	igt_output_t *output;
+
+	test_init(data);
+
+	edp_idx = check_conn_type(data, DRM_MODE_CONNECTOR_eDP);
+	igt_skip_on_f(edp_idx == -1, "no eDP connector found\n");
+
+	/* check if eDP support PSR1, PSR-SU.
+	 */
+	igt_skip_on(!psr_mode_supported(data, PSR_MODE_1) && !psr_mode_supported(data, PSR_MODE_2));
+	for_each_connected_output(&data->display, output) {
+
+		if (output->config.connector->connector_type != DRM_MODE_CONNECTOR_eDP)
+			continue;
+		ret = clear_power_saving_policy(data->fd, output);
+		if (ret == -ENODEV) {
+			igt_skip("No power saving policy prop\n");
+			return;
+		}
+		igt_require(ret == 0);
+
+		/* try to engage PSR */
+		ret = set_panel_power_saving_policy(data->fd, output, DRM_MODE_REQUIRE_LOW_LATENCY);
+		igt_assert_eq(ret, 0);
+
+		igt_create_color_fb(data->fd, data->mode->hdisplay,
+				    data->mode->vdisplay, DRM_FORMAT_XRGB8888, 0, 1.0,
+				    0.0, 0.0, &ref_fb);
+		igt_create_color_fb(data->fd, data->mode->hdisplay,
+				    data->mode->vdisplay, DRM_FORMAT_XRGB8888, 0, 0.0,
+				    1.0, 0.0, &ref_fb2);
+
+		igt_plane_set_fb(data->primary, &ref_fb);
+
+		igt_display_commit_atomic(&data->display, DRM_MODE_ATOMIC_ALLOW_MODESET, 0);
+
+		for (i = 0; i < N_FLIPS; i++) {
+			if (i % 2 == 0)
+				flip_fb = &ref_fb2;
+			else
+				flip_fb = &ref_fb;
+
+			ret = drmModePageFlip(data->fd, output->config.crtc->crtc_id,
+					      flip_fb->fb_id, DRM_MODE_PAGE_FLIP_EVENT, NULL);
+			igt_require(ret == 0);
+			kmstest_wait_for_pageflip(data->fd);
+		}
+
+		/* PSR state takes some time to settle its value on static screen */
+		sleep(PSR_SETTLE_DELAY);
+
+		psr_state =  igt_amd_read_psr_state(data->fd, output->name);
+		igt_require(psr_state == PSR_STATE3);
+
+		igt_remove_fb(data->fd, &ref_fb);
+		igt_remove_fb(data->fd, &ref_fb2);
+
+		ret = clear_power_saving_policy(data->fd, output);
+		if (ret == -ENODEV) {
+			igt_skip("No power saving policy prop\n");
+			return;
+		}
+		igt_require(ret == 0);
+
+	}
+}
+
 static void run_check_psr_su_mpo(data_t *data, bool scaling, float scaling_ratio)
 {
 	int edp_idx = check_conn_type(data, DRM_MODE_CONNECTOR_eDP);
@@ -756,6 +828,8 @@ igt_main_args("", long_options, help_str, opt_handler, NULL)
 	igt_describe("Test to validate PSR SU enablement with Visual Confirm "
 		     "and to validate PSR SU disable/re-enable w/ primary scaling ratio 0.75");
 	igt_subtest("psr_su_mpo_scaling_0_75") run_check_psr_su_mpo(&data, true, .75);
+	igt_describe("Test whether PSR can be forbidden");
+	igt_subtest("psr_forbidden") psr_forbidden(&data);
 
 	igt_fixture
 	{
-- 
2.43.0