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| author | Michael Ellerman <mpe@ellerman.id.au> | 2022-07-25 13:49:22 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-07-25 13:49:22 +1000 |
| commit | 3c69a99b62fde9de86a612ef1daaa07d95f0a773 (patch) | |
| tree | 2a82c3ba8926092d35a9ef1ddc62a08cf19ac981 /arch/x86/kernel/acpi/cppc.c | |
| parent | be640317a1d0b9cf42fedb2debc2887a7cfa38de (diff) | |
| parent | ff6992735ade75aae3e35d16b17da1008d753d28 (diff) | |
Merge tag 'v5.19-rc7' into fixes
Merge v5.19-rc7 into fixes to bring in:
d11219ad53dc ("amdgpu: disable powerpc support for the newer display engine")
Diffstat (limited to 'arch/x86/kernel/acpi/cppc.c')
| -rw-r--r-- | arch/x86/kernel/acpi/cppc.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/x86/kernel/acpi/cppc.c b/arch/x86/kernel/acpi/cppc.c index 8b8cbf22461a..8d8752b44f11 100644 --- a/arch/x86/kernel/acpi/cppc.c +++ b/arch/x86/kernel/acpi/cppc.c @@ -11,6 +11,22 @@ /* Refer to drivers/acpi/cppc_acpi.c for the description of functions */ +bool cpc_supported_by_cpu(void) +{ + switch (boot_cpu_data.x86_vendor) { + case X86_VENDOR_AMD: + case X86_VENDOR_HYGON: + if (boot_cpu_data.x86 == 0x19 && ((boot_cpu_data.x86_model <= 0x0f) || + (boot_cpu_data.x86_model >= 0x20 && boot_cpu_data.x86_model <= 0x2f))) + return true; + else if (boot_cpu_data.x86 == 0x17 && + boot_cpu_data.x86_model >= 0x70 && boot_cpu_data.x86_model <= 0x7f) + return true; + return boot_cpu_has(X86_FEATURE_CPPC); + } + return false; +} + bool cpc_ffh_supported(void) { return true; |