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Shenoy" , "Mario Limonciello" , Perry Yuan , , , , , "Shyam Sundar S K" , Perry Yuan Subject: [PATCH v2 09/13] platform/x86: hfi: add power management callback Date: Thu, 10 Oct 2024 14:37:01 -0500 Message-ID: <20241010193705.10362-10-mario.limonciello@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241010193705.10362-1-mario.limonciello@amd.com> References: <20241010193705.10362-1-mario.limonciello@amd.com> Precedence: bulk X-Mailing-List: linux-pm@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: SA2PEPF000015C6:EE_|LV3PR12MB9141:EE_ X-MS-Office365-Filtering-Correlation-Id: 621fdf6e-811c-48f5-d6bd-08dce963062a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|1800799024|82310400026|376014; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(36860700013)(1800799024)(82310400026)(376014);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Oct 2024 19:37:49.3335 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 621fdf6e-811c-48f5-d6bd-08dce963062a 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: SA2PEPF000015C6.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: LV3PR12MB9141 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 Co-developed-by: Mario Limonciello Signed-off-by: Mario Limonciello --- v2: * Whitespace changes * Use on online CPUs not present ones --- drivers/platform/x86/amd/hfi/hfi.c | 33 ++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/drivers/platform/x86/amd/hfi/hfi.c b/drivers/platform/x86/amd/hfi/hfi.c index c969ee7ea5ee..0263993b0a94 100644 --- a/drivers/platform/x86/amd/hfi/hfi.c +++ b/drivers/platform/x86/amd/hfi/hfi.c @@ -407,6 +407,38 @@ static int amd_hfi_metadata_parser(struct platform_device *pdev, return ret; } +static int amd_hfi_pm_resume(struct device *dev) +{ + int ret, cpu; + + for_each_present_cpu(cpu) { + ret = amd_hfi_set_state(cpu, true); + if (ret < 0) { + dev_err(dev, "failed to enable workload class config: %d\n", ret); + return ret; + } + } + + return 0; +} + +static int amd_hfi_pm_suspend(struct device *dev) +{ + int ret, cpu; + + for_each_online_cpu(cpu) { + ret = amd_hfi_set_state(cpu, false); + if (ret < 0) { + dev_err(dev, "failed to disable workload class config: %d\n", ret); + return ret; + } + } + + return 0; +} + +static DEFINE_SIMPLE_DEV_PM_OPS(amd_hfi_pm_ops, amd_hfi_pm_suspend, amd_hfi_pm_resume); + static const struct acpi_device_id amd_hfi_platform_match[] = { { "AMDI0104", 0}, { } @@ -458,6 +490,7 @@ 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,