From 83e2908c1d425a6ef2e96457ad95b886b8ddfc48 Mon Sep 17 00:00:00 2001 From: Sumit Gupta Date: Tue, 20 Jan 2026 20:26:17 +0530 Subject: [PATCH] ACPI: CPPC: Rename EPP constants for clarity Update EPP (Energy Performance Preference) constants for more 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 [ rjw: Changelog edits ] Link: https://patch.msgid.link/20260120145623.2959636-4-sumitg@nvidia.com Signed-off-by: Rafael J. Wysocki --- 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 e66e20d1f31b7..c67494939f7bc 100644 --- a/drivers/acpi/cppc_acpi.c +++ b/drivers/acpi/cppc_acpi.c @@ -1609,7 +1609,7 @@ 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; 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 a090b010f5f15..44d41ecb1b1d6 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 when writing */ #define CPPC_AUTO_ACT_WINDOW_SIG_CARRY_THRESH 129 -#define CPPC_ENERGY_PERF_MAX (0xFF) +#define CPPC_EPP_PERFORMANCE_PREF 0x00 +#define CPPC_EPP_ENERGY_EFFICIENCY_PREF 0xFF /* Each register has the folowing format. */ struct cpc_reg { -- 2.47.3