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Tue, 8 Sep 2026 06:35:15 -0500 From: Chenyu Chen To: CC: Harry Wentland , Leo Li , Aurabindo Pillai , Roman Li , Wayne Lin , Tom Chung , "Fangzhi Zuo" , Dan Wheeler , Ray Wu , Ivan Lipski , Alex Hung , James Lin , Chenyu Chen , Bhawanpreet Lakha , "Chenyu Chen" Subject: [PATCH 11/66] drm/amd/display: Test DCC reject for multi-plane format Date: Tue, 8 Sep 2026 19:31:04 +0800 Message-ID: <20260908113338.2433445-12-chen-yu.chen@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260908113338.2433445-1-chen-yu.chen@amd.com> References: <20260908113338.2433445-1-chen-yu.chen@amd.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN2PEPF0000A891:EE_|PH8PR12MB6961:EE_ X-MS-Office365-Filtering-Correlation-Id: 25347fa0-fbe6-48d3-8188-08df0d9d4617 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|376014|82310400026|23010399003|1800799024|36860700016|10067099003|11063799006|56012099006|18002099003|22082099003; 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DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: FxBVTxzKhryFCwST4CcW1WaZV2su8TjtmWpu/L6WKXa/0cPIUCpnrcpJadVhlmhR/ywnX9bGWXoOCXN7jBgnWJzemnzgoauJafWaIIKXBHXSu5QKc1j0oUKq7Az+1mQRPdO87jaRXafExZjPuxvWohJkaJrIUjdNDqF7bgsbGgmfoDGQiryom8nYD0PHOlcleraDB/HHF/nqsxtrRLVTw8IPCYkih4rANVDf/A6jKOtvu4YMkjfFNw4Rtp2f33XKBQl+UM3BOrK8AcTqUi+RHej2QmCNrLGDcIg2T7PpPiJfGQEV67Z78MbHozThA+1nFjFW4vj6Q3lfo7Q6D60GRnl85Rsjr7PTcsG+7LysFgze55dSBBUpC5Sx2utj/wYYPabP2NWCRdChm/6IcPic63pJ/C7L1tV4kblO7dEwxHWam8uMZSfRCxI2qaGEm+lQ X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Sep 2026 11:35:24.6441 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 25347fa0-fbe6-48d3-8188-08df0d9d4617 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=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN2PEPF0000A891.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR12MB6961 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: , Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" From: Alex Hung [WHAT] Extend the amdgpu_dm_plane_format_mod_supported() test to cover the rejection of a format that carries an extra plane alongside a DCC modifier. [HOW] Reuse the existing GFX9 DCC modifier and ask for XRGB8888_A8, whose 4 bytes-per-pixel main plane passes the bpp check but whose alpha plane collides with the DCC metadata plane. Assisted-by: Copilot:Claude-Opus-5 Reviewed-by: Bhawanpreet Lakha Signed-off-by: Alex Hung Signed-off-by: Chenyu Chen --- .../drm/amd/display/amdgpu_dm/tests/amdgpu_dm_plane_test.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_plane_test.c b/drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_plane_test.c index 1b39f41c8414..939f79422d7e 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_plane_test.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_plane_test.c @@ -506,6 +506,11 @@ static void dm_test_format_mod_supported(struct kunit *test) KUNIT_EXPECT_FALSE(test, amdgpu_dm_plane_format_mod_supported(plane, DRM_FORMAT_NV12, listed_mod)); + + /* 4 bytes per pixel, but its extra plane collides with the DCC metadata plane. */ + KUNIT_EXPECT_FALSE(test, + amdgpu_dm_plane_format_mod_supported(plane, DRM_FORMAT_XRGB8888_A8, + listed_mod)); } /** -- 2.43.0