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CAT:NONE; SFS:(13230001)(4636009)(40470700004)(36840700001)(46966006)(82310400004)(26005)(36860700001)(508600001)(83380400001)(336012)(40460700003)(15650500001)(426003)(1076003)(6666004)(2616005)(186003)(4326008)(70586007)(8936002)(70206006)(6916009)(316002)(5660300002)(36756003)(356005)(47076005)(16526019)(8676002)(81166007)(2906002)(54906003)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 05 Feb 2022 01:50:55.7737 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 0b2dad80-b658-4a39-96ac-08d9e849f32b X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CO1NAM11FT067.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR12MB1160 X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: stylon.wang@amd.com, Sunpeng.Li@amd.com, Harry.Wentland@amd.com, qingqing.zhuo@amd.com, Jasdeep Dhillon , Rodrigo.Siqueira@amd.com, roman.li@amd.com, Wenjing Liu , solomon.chiu@amd.com, Aurabindo.Pillai@amd.com, wayne.lin@amd.com, "Guo, Bing" , Bhawanpreet.Lakha@amd.com, agustin.gutierrez@amd.com, pavle.kotarac@amd.com Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" From: "Guo, Bing" Why: When resume from sleep or hiberation, blocked MST Topology discovery might need to be used. How: Added "DETECT_REASON_RESUMEFROMS3S4" to enum dc_detect_reason; use it to require blocked MST Topology discovery. Reviewed-by: Wenjing Liu Acked-by: Jasdeep Dhillon Signed-off-by: "Bing Guo" --- drivers/gpu/drm/amd/display/dc/core/dc_link.c | 2 +- drivers/gpu/drm/amd/display/dc/dc_link.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index cb6c91cd6e83..ec4b300ec067 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -831,7 +831,7 @@ static bool discover_dp_mst_topology(struct dc_link *link, enum dc_detect_reason link->type = dc_connection_mst_branch; dm_helpers_dp_update_branch_info(link->ctx, link); if (dm_helpers_dp_mst_start_top_mgr(link->ctx, - link, reason == DETECT_REASON_BOOT)) { + link, (reason == DETECT_REASON_BOOT || reason == DETECT_REASON_RESUMEFROMS3S4))) { link_disconnect_sink(link); } else { link->type = dc_connection_sst_branch; diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h index e7ead9e25318..9ad3ee4079c3 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_link.h +++ b/drivers/gpu/drm/amd/display/dc/dc_link.h @@ -312,6 +312,7 @@ void dc_link_blank_dp_stream(struct dc_link *link, bool hw_init); */ enum dc_detect_reason { DETECT_REASON_BOOT, + DETECT_REASON_RESUMEFROMS3S4, DETECT_REASON_HPD, DETECT_REASON_HPDRX, DETECT_REASON_FALLBACK, -- 2.25.1