From: Pu Wen <puwen@hygon.cn>
Date: Sun, 23 Sep 2018 17:37:05 +0800
Subject: ACPI: Add Hygon Dhyana support
Git-commit: 7377ed4bd56e6cc1ddbb63f03626fc5b92d3d6fe
Patch-mainline: v4.20-rc1
References: fate#327735

The Hygon Dhyana CPU has NONSTOP TSC feature, so enable the ACPI driver
support to it.

Signed-off-by: Pu Wen <puwen@hygon.cn>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: rjw@rjwysocki.net
Cc: tglx@linutronix.de
Cc: mingo@redhat.com
Cc: hpa@zytor.com
Cc: x86@kernel.org
Cc: thomas.lendacky@amd.com
Cc: lenb@kernel.org
Cc: rafael@kernel.org
Cc: linux-acpi@vger.kernel.org
Link: https://lkml.kernel.org/r/cce6ee26f4e2ebbab493433264d89d7cea661284.1537533369.git.puwen@hygon.cn
---
 drivers/acpi/acpi_pad.c       |    1 +
 drivers/acpi/processor_idle.c |    1 +
 2 files changed, 2 insertions(+)

--- a/drivers/acpi/acpi_pad.c
+++ b/drivers/acpi/acpi_pad.c
@@ -70,6 +70,7 @@ static void power_saving_mwait_init(void
 
 #if defined(CONFIG_X86)
 	switch (boot_cpu_data.x86_vendor) {
+	case X86_VENDOR_HYGON:
 	case X86_VENDOR_AMD:
 	case X86_VENDOR_INTEL:
 		/*
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -203,6 +203,7 @@ static void lapic_timer_state_broadcast(
 static void tsc_check_state(int state)
 {
 	switch (boot_cpu_data.x86_vendor) {
+	case X86_VENDOR_HYGON:
 	case X86_VENDOR_AMD:
 	case X86_VENDOR_INTEL:
 		/*