cpupower: Initial AMD P-State capability

If kernel starts the AMD P-State module, the cpupower will initial the
capability flag as CPUPOWER_CAP_AMD_PSTATE. And once AMD P-State
capability is set, it won't need to set legacy ACPI relative
capabilities anymore.

Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

diff --git a/tools/power/cpupower/utils/helpers/cpuid.c b/tools/power/cpupower/utils/helpers/cpuid.c
index 72eb4359318032f939e06db0ff5279a52573013d..eae91f11d187003e92d76af03905c70d61c8cb65 100644 (file)
--- a/tools/power/cpupower/utils/helpers/cpuid.c
+++ b/tools/power/cpupower/utils/helpers/cpuid.c
@@ -149,6 +149,19 @@ out:
                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) {