From patchwork Thu Sep 1 20:33:42 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: srinivas pandruvada X-Patchwork-Id: 9309707 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 4019960760 for ; Thu, 1 Sep 2016 21:24:51 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0224929548 for ; Thu, 1 Sep 2016 21:24:51 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E861E2954A; Thu, 1 Sep 2016 21:24:50 +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 5D99429548 for ; Thu, 1 Sep 2016 21:24:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753093AbcIAVSl (ORCPT ); Thu, 1 Sep 2016 17:18:41 -0400 Received: from mga05.intel.com ([192.55.52.43]:44332 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753793AbcIAVHu (ORCPT ); Thu, 1 Sep 2016 17:07:50 -0400 Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga105.fm.intel.com with ESMTP; 01 Sep 2016 13:33:59 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.30,268,1470726000"; d="scan'208";a="3734175" Received: from spandruv-desk.jf.intel.com ([10.54.75.13]) by fmsmga006.fm.intel.com with ESMTP; 01 Sep 2016 13:33:49 -0700 From: Srinivas Pandruvada To: rjw@rjwysocki.net, tglx@linutronix.de, mingo@redhat.com, bp@suse.de, peterz@infradead.org Cc: x86@kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, tim.c.chen@linux.intel.com, Srinivas Pandruvada Subject: [PATCH v2 6/8] acpi: bus: Enable HWP CPPC objects Date: Thu, 1 Sep 2016 13:33:42 -0700 Message-Id: <1472762024-88771-7-git-send-email-srinivas.pandruvada@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1472762024-88771-1-git-send-email-srinivas.pandruvada@linux.intel.com> References: <1472762024-88771-1-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 | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 85b7d07..1001b92 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -330,6 +330,11 @@ static void acpi_bus_osc_support(void) capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_HOTPLUG_OST_SUPPORT; capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_PCLPI_SUPPORT; + if (IS_ENABLED(CONFIG_X86) && boot_cpu_has(X86_FEATURE_HWP)) { + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPC_SUPPORT; + capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_CPCV2_SUPPORT; + } + if (!ghes_disable) capbuf[OSC_SUPPORT_DWORD] |= OSC_SB_APEI_SUPPORT; if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))