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Subject[PATCH v5 15/22] cpupower: initial AMD P-state capability
Date
If kernel starts the amd-pstate module, the cpupower will initial the
capability flag as CPUPOWER_CAP_AMD_PSTATE. And once amd-pstate
capability is set, it won't need to set legacy ACPI relative
capabilities anymore.

Signed-off-by: Huang Rui <ray.huang@amd.com>
---
tools/power/cpupower/utils/helpers/cpuid.c | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/tools/power/cpupower/utils/helpers/cpuid.c b/tools/power/cpupower/utils/helpers/cpuid.c
index 72eb43593180..2a6dc104e76b 100644
--- a/tools/power/cpupower/utils/helpers/cpuid.c
+++ b/tools/power/cpupower/utils/helpers/cpuid.c
@@ -149,6 +149,19 @@ int get_cpu_info(struct cpupower_cpu_info *cpu_info)
if (ext_cpuid_level >= 0x80000008 &&
cpuid_ebx(0x80000008) & (1 << 4))
cpu_info->caps |= CPUPOWER_CAP_AMD_RDPRU;
+
+ if (cpupower_amd_pstate_enabled()) {
+ cpu_info->caps |= CPUPOWER_CAP_AMD_PSTATE;
+
+ /*
+ * If AMD P-state is enabled, the firmware will treat
+ * AMD P-state function as high priority.
+ */
+ cpu_info->caps &= ~CPUPOWER_CAP_AMD_CPB;
+ cpu_info->caps &= ~CPUPOWER_CAP_AMD_CPB_MSR;
+ cpu_info->caps &= ~CPUPOWER_CAP_AMD_HW_PSTATE;
+ cpu_info->caps &= ~CPUPOWER_CAP_AMD_PSTATEDEF;
+ }
}

if (cpu_info->vendor == X86_VENDOR_INTEL) {
--
2.25.1
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