[PATCH v2 3/4] tests/amdgpu/amd_abm: Add support for panel_power_saving property

[Mario Limonciello]

From: Mario Limonciello <superm1 at ubuntu.com>

When the "panel power saving" property is set to forbidden the
compositor has indicated that userspace prefers to have color
accuracy and fidelity instead of power saving.

Verify that the sysfs file behaves as expected in this situation.

Signed-off-by: Mario Limonciello <mario.limonciello at amd.com>
---
 tests/amdgpu/amd_abm.c | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/tests/amdgpu/amd_abm.c b/tests/amdgpu/amd_abm.c
index f74c3012c..3fa1366fa 100644
--- a/tests/amdgpu/amd_abm.c
+++ b/tests/amdgpu/amd_abm.c
@@ -365,6 +365,43 @@ static void abm_gradual(data_t *data)
 	}
 }
 
+
+static void abm_forbidden(data_t *data)
+{
+	igt_output_t *output;
+	enum pipe pipe;
+	int target, r;
+
+	for_each_pipe_with_valid_output(&data->display, pipe, output) {
+		if (output->config.connector->connector_type != DRM_MODE_CONNECTOR_eDP)
+			continue;
+
+		r = clear_power_saving_policy(data->drm_fd, output);
+		if (r == -ENODEV) {
+			igt_skip("No power saving policy prop\n");
+			return;
+		}
+		igt_assert_eq(r, 0);
+
+		target = 3;
+		r = set_abm_level(data, output, target);
+		igt_assert_eq(r, 0);
+
+		r = set_panel_power_saving_policy(data->drm_fd, output, DRM_MODE_REQUIRE_COLOR_ACCURACY);
+		igt_assert_eq(r, 0);
+
+		target = 0;
+		r = set_abm_level(data, output, target);
+		igt_assert_eq(r, -1);
+
+		r = clear_power_saving_policy(data->drm_fd, output);
+		igt_assert_eq(r, 0);
+
+		r = set_abm_level(data, output, target);
+		igt_assert_eq(r, 0);
+	}
+}
+
 igt_main
 {
 	data_t data = {};
@@ -393,6 +430,8 @@ igt_main
 		abm_enabled(&data);
 	igt_subtest("abm_gradual")
 		abm_gradual(&data);
+	igt_subtest("abm_forbidden")
+		abm_forbidden(&data);
 
 	igt_fixture {
 		igt_display_fini(&data.display);
-- 
2.43.0