From patchwork Tue Nov 10 02:58:11 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: srinivas pandruvada X-Patchwork-Id: 7587741 X-Patchwork-Delegate: rjw@sisk.pl Return-Path: X-Original-To: patchwork-linux-pm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id F16B4C05C6 for ; Tue, 10 Nov 2015 02:59:10 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 4133E206BC for ; Tue, 10 Nov 2015 02:59:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B811020696 for ; Tue, 10 Nov 2015 02:59:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751843AbbKJC7F (ORCPT ); Mon, 9 Nov 2015 21:59:05 -0500 Received: from mga03.intel.com ([134.134.136.65]:43581 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751841AbbKJC7F (ORCPT ); Mon, 9 Nov 2015 21:59:05 -0500 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga103.jf.intel.com with ESMTP; 09 Nov 2015 18:59:03 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,268,1444719600"; d="scan'208";a="846624284" Received: from spandruv-desk3.jf.intel.com ([10.7.199.153]) by orsmga002.jf.intel.com with ESMTP; 09 Nov 2015 18:59:04 -0800 From: Srinivas Pandruvada To: rafael.j.wysocki@intel.com, lenlenb@kernel.org Cc: linux-pm@vger.kernel.org, Srinivas Pandruvada Subject: [PATCH 3/3] cpufreq: intel_pstate: Fix the scaling of _PSS entry[0] Date: Mon, 9 Nov 2015 18:58:11 -0800 Message-Id: <1447124291-14059-4-git-send-email-srinivas.pandruvada@linux.intel.com> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1447124291-14059-1-git-send-email-srinivas.pandruvada@linux.intel.com> References: <1447124291-14059-1-git-send-email-srinivas.pandruvada@linux.intel.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Spam-Status: No, score=-7.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Since even non core platforms like Atom SoC has _PSS table, we can't hardcode scaling. Instead we can use cpu->pstate.scaling. We need to convert to MHz as the scaling values are in KHz. Signed-off-by: Srinivas Pandruvada --- drivers/cpufreq/intel_pstate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 69dc9b5..50d3cff 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -312,7 +312,7 @@ static int intel_pstate_init_perf_limits(struct cpufreq_policy *policy) * Also need to convert to MHz as _PSS freq is in MHz. */ cpu->acpi_perf_data.states[0].core_frequency = - turbo_pss_ctl * 100; + turbo_pss_ctl * cpu->pstate.scaling / 1000; } pr_debug("intel_pstate: Updated limits using _PSS 0x%x 0x%x 0x%x\n",