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Ip=[165.204.84.17]; Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SA2PEPF000015C8.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR12MB5912 X-BeenThere: igt-dev@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development mailing list for IGT GPU Tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" Currently, the link settings persist after the link settings subtest, and can retain a lowered link rate/lane count going into subsequent subtests. Fix it by resetting the link settings on an igt_fixture after running the dsc_link_settings subtest. We can do so by setting it to lane count and link rate unknown and letting the driver set it to the default values. Signed-off-by: George Zhang --- tests/amdgpu/amd_dp_dsc.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/tests/amdgpu/amd_dp_dsc.c b/tests/amdgpu/amd_dp_dsc.c index ccaf64c66..a5668a31a 100644 --- a/tests/amdgpu/amd_dp_dsc.c +++ b/tests/amdgpu/amd_dp_dsc.c @@ -351,6 +351,25 @@ static void test_dsc_slice_dimensions_change(data_t *data) igt_skip_on(test_conn_cnt == 0); } +static void reset_link_settings(data_t *data) +{ + igt_output_t *output; + igt_crtc_t *crtc; + + if (!data) + return; + + for_each_crtc(&data->display, crtc) { + output = data->output[crtc->crtc_index]; + if (!output || !igt_output_is_connected(output) || + !is_dsc_capable(&data->mode[crtc->crtc_index])) + continue; + igt_amd_write_link_settings(data->fd, output->name, + LANE_COUNT_UNKNOWN, LINK_RATE_UNKNOWN, + LINK_TRAINING_DEFAULT); + } +} + static void test_dsc_link_settings(data_t *data) { igt_output_t *output; @@ -604,6 +623,9 @@ int igt_main() { igt_subtest("dsc-link-settings") test_dsc_link_settings(&data); + igt_fixture() + reset_link_settings(&data); + igt_describe("Tests different bpc settings and logs if DSC is enabled/disabled"); igt_subtest("dsc-bpc") test_dsc_bpc(&data); -- 2.55.0