From patchwork Thu Sep 8 22:26:53 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: srinivas pandruvada X-Patchwork-Id: 9322189 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 8B3DB60B16 for ; Thu, 8 Sep 2016 22:27:50 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 906DC29A1A for ; Thu, 8 Sep 2016 22:27:50 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8541929A21; Thu, 8 Sep 2016 22:27:50 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3630229A23 for ; Thu, 8 Sep 2016 22:27:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965349AbcIHW1S (ORCPT ); Thu, 8 Sep 2016 18:27:18 -0400 Received: from mga06.intel.com ([134.134.136.31]:37131 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932808AbcIHW1I (ORCPT ); Thu, 8 Sep 2016 18:27:08 -0400 Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga104.jf.intel.com with ESMTP; 08 Sep 2016 15:27:02 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.30,302,1470726000"; d="scan'208";a="1053344270" Received: from spandruv-desk.jf.intel.com ([10.54.75.13]) by fmsmga002.fm.intel.com with ESMTP; 08 Sep 2016 15:27:01 -0700 From: Srinivas Pandruvada To: rjw@rjwysocki.net, tglx@linutronix.de, mingo@redhat.com, bp@suse.de Cc: x86@kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, peterz@infradead.org, tim.c.chen@linux.intel.com, Srinivas Pandruvada Subject: [PATCH v3 6/8] acpi: bus: Enable HWP CPPC objects Date: Thu, 8 Sep 2016 15:26:53 -0700 Message-Id: <1473373615-51427-7-git-send-email-srinivas.pandruvada@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1473373615-51427-1-git-send-email-srinivas.pandruvada@linux.intel.com> References: <1473373615-51427-1-git-send-email-srinivas.pandruvada@linux.intel.com> Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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)))