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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by BL02EPF00021F6A.mail.protection.outlook.com (10.167.249.6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.7918.13 via Frontend Transport; Tue, 27 Aug 2024 09:37:46 +0000 Received: from pyuan-Chachani-VN.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Tue, 27 Aug 2024 04:37:42 -0500 From: Perry Yuan To: , , , , CC: , , , , , , , Subject: [PATCH 09/11] platform/x86/: hfi: add power management callback Date: Tue, 27 Aug 2024 17:36:57 +0800 Message-ID: X-Mailer: git-send-email 2.34.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: platform-driver-x86@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF00021F6A:EE_|SA1PR12MB7128:EE_ X-MS-Office365-Filtering-Correlation-Id: bd306d05-6ea8-4f9e-41ab-08dcc67be8c7 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|376014|36860700013|1800799024; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Aug 2024 09:37:46.7011 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: bd306d05-6ea8-4f9e-41ab-08dcc67be8c7 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: BL02EPF00021F6A.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB7128 From: Perry Yuan Introduces power management callbacks for the `amd_hfi` driver. Specifically, the `suspend` and `resume` callbacks have been added to handle the necessary operations during system low power states and wake-up. Signed-off-by: Perry Yuan Reviewed-by: Mario Limonciello --- drivers/platform/x86/amd/hfi/hfi.c | 34 ++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/drivers/platform/x86/amd/hfi/hfi.c b/drivers/platform/x86/amd/hfi/hfi.c index 57b642c4c522..c3da2edf8590 100644 --- a/drivers/platform/x86/amd/hfi/hfi.c +++ b/drivers/platform/x86/amd/hfi/hfi.c @@ -304,6 +304,39 @@ static void amd_hfi_remove(struct platform_device *pdev) mutex_destroy(&dev->lock); } +static int amd_hfi_pm_resume(struct device *dev) +{ + int cpu, err; + + for_each_present_cpu(cpu) { + err = amd_hfi_set_state(cpu, true); + if (err < 0) { + dev_err(dev, "failed to enable workload class config: %d\n", err); + return err; + } + } + + return 0; +} + +static int amd_hfi_pm_suspend(struct device *dev) +{ + int err, cpu; + + for_each_possible_cpu(cpu) { + err = amd_hfi_set_state(cpu, false); + if (err < 0) { + dev_err(dev, "failed to disable workload class config: %d\n", err); + return err; + } + } + + return 0; +} + +static DEFINE_SIMPLE_DEV_PM_OPS(amd_hfi_pm_ops, + amd_hfi_pm_suspend, amd_hfi_pm_resume); + static int amd_set_hfi_ipcc_score(struct amd_hfi_cpuinfo *hfi_cpuinfo, int cpu) { int i, *hfi_scores; @@ -569,6 +602,7 @@ static struct platform_driver amd_hfi_driver = { .driver = { .name = AMD_HFI_DRIVER, .owner = THIS_MODULE, + .pm = &amd_hfi_pm_ops, .acpi_match_table = ACPI_PTR(amd_hfi_platform_match), }, .probe = amd_hfi_probe,