From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754826AbcHSBP4 (ORCPT ); Thu, 18 Aug 2016 21:15:56 -0400 Received: from mga04.intel.com ([192.55.52.120]:8849 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754202AbcHSBPw (ORCPT ); Thu, 18 Aug 2016 21:15:52 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.28,542,1464678000"; d="scan'208";a="1038140120" From: Srinivas Pandruvada To: mingo@redhat.com, tglx@linutronix.de, hpa@zytor.com, rjw@rjwysocki.net, peterz@infradead.org Cc: x86@kernel.org, bp@suse.de, sudeep.holla@arm.com, ak@linux.intel.com, linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org, alexey.klimov@arm.com, viresh.kumar@linaro.org, akpm@linux-foundation.org, linux-kernel@vger.kernel.org, lenb@kernel.org, tim.c.chen@linux.intel.com, srinivas.pandruvada@linux.intel.com, paul.gortmaker@windriver.com, jpoimboe@redhat.com, mcgrof@kernel.org, jgross@suse.com, robert.moore@intel.com, dvyukov@google.com, jeyu@redhat.com Subject: [PATCH 09/11] acpi: bus: Enable HWP CPPC objects Date: Thu, 18 Aug 2016 15:36:50 -0700 Message-Id: <1471559812-19967-10-git-send-email-srinivas.pandruvada@linux.intel.com> X-Mailer: git-send-email 2.5.5 In-Reply-To: <1471559812-19967-1-git-send-email-srinivas.pandruvada@linux.intel.com> References: <1471559812-19967-1-git-send-email-srinivas.pandruvada@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Need to set platform wide _OSC bits to enable CPPC and CPPC version 2. If platform supports CPPC, then BIOS exposess CPPC tables. Signed-off-by: Srinivas Pandruvada --- drivers/acpi/bus.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 85b7d07..61643a5 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -330,6 +330,13 @@ static void acpi_bus_osc_support(void) capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT; capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PCLPI_SUPPORT; +#ifdef CONFIG_X86 + if (boot_cpu_has(X86_FEATURE_HWP)) { + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPC_SUPPORT; + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPCV2_SUPPORT; + } +#endif + if (!ghes_disable) capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT; if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle))) -- 2.7.4