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Tue, 20 Jan 2026 06:57:02 -0800 From: Sumit Gupta To: , , , , , , , , , , , , , , , , , , CC: , , , , , , , , Subject: [PATCH v6 3/9] ACPI: CPPC: Rename EPP constants for clarity Date: Tue, 20 Jan 2026 20:26:17 +0530 Message-ID: <20260120145623.2959636-4-sumitg@nvidia.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260120145623.2959636-1-sumitg@nvidia.com> References: <20260120145623.2959636-1-sumitg@nvidia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NVConfidentiality: public Content-Transfer-Encoding: quoted-printable X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000E9DB:EE_|MW4PR12MB7032:EE_ X-MS-Office365-Filtering-Correlation-Id: 4b86da8a-cc99-48d7-e2fd-08de58343e86 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|82310400026|7416014|376014|36860700013|921020; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Jan 2026 14:57:34.2470 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 4b86da8a-cc99-48d7-e2fd-08de58343e86 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.161];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000E9DB.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW4PR12MB7032 Content-Type: text/plain; charset="utf-8" Update EPP (Energy Performance Preference) constants for better clarity: - Add CPPC_EPP_PERFORMANCE_PREF (0x00) for performance preference - Rename CPPC_ENERGY_PERF_MAX to CPPC_EPP_ENERGY_EFFICIENCY_PREF (0xFF) for energy efficiency Signed-off-by: Sumit Gupta Reviewed-by: Lifeng Zheng --- drivers/acpi/cppc_acpi.c | 2 +- include/acpi/cppc_acpi.h | 3 ++- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c index 22d7fd669a6c..a09bdabaa804 100644 --- a/drivers/acpi/cppc_acpi.c +++ b/drivers/acpi/cppc_acpi.c @@ -1615,7 +1615,7 @@ EXPORT_SYMBOL_GPL(cppc_set_epp_perf); */ int cppc_set_epp(int cpu, u64 epp_val) { - if (epp_val > CPPC_ENERGY_PERF_MAX) + if (epp_val > CPPC_EPP_ENERGY_EFFICIENCY_PREF) return -EINVAL; =20 return cppc_set_reg_val(cpu, ENERGY_PERF, epp_val); diff --git a/include/acpi/cppc_acpi.h b/include/acpi/cppc_acpi.h index 6573a759eb8d..4d644f03098e 100644 --- a/include/acpi/cppc_acpi.h +++ b/include/acpi/cppc_acpi.h @@ -39,7 +39,8 @@ /* CPPC_AUTO_ACT_WINDOW_MAX_SIG is 127, so 128 and 129 will decay to 127 w= hen writing */ #define CPPC_AUTO_ACT_WINDOW_SIG_CARRY_THRESH 129 =20 -#define CPPC_ENERGY_PERF_MAX (0xFF) +#define CPPC_EPP_PERFORMANCE_PREF 0x00 +#define CPPC_EPP_ENERGY_EFFICIENCY_PREF 0xFF =20 /* Each register has the folowing format. */ struct cpc_reg { --=20 2.34.1