From patchwork Thu Jul 4 08:50:29 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lukasz Majewski X-Patchwork-Id: 2822481 Return-Path: X-Original-To: patchwork-linux-pm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 0A28E9F3C3 for ; Thu, 4 Jul 2013 08:54:38 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 2DF1E2010A for ; Thu, 4 Jul 2013 08:54:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1191B2013E for ; Thu, 4 Jul 2013 08:54:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964864Ab3GDIvm (ORCPT ); Thu, 4 Jul 2013 04:51:42 -0400 Received: from mailout2.samsung.com ([203.254.224.25]:34883 "EHLO mailout2.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933710Ab3GDIvW (ORCPT ); Thu, 4 Jul 2013 04:51:22 -0400 Received: from epcpsbgm1.samsung.com (epcpsbgm1 [203.254.230.26]) by mailout2.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0MPE009XSLWZ37K0@mailout2.samsung.com>; Thu, 04 Jul 2013 17:51:21 +0900 (KST) X-AuditID: cbfee61a-b7f3b6d000006edd-af-51d53789caca Received: from epmmp1.local.host ( [203.254.227.16]) by epcpsbgm1.samsung.com (EPCPMTA) with SMTP id 96.01.28381.98735D15; Thu, 04 Jul 2013 17:51:21 +0900 (KST) Received: from mcdsrvbld02.digital.local ([106.116.37.23]) by mmp1.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0MPE008KLLW9XTB0@mmp1.samsung.com>; Thu, 04 Jul 2013 17:51:20 +0900 (KST) From: Lukasz Majewski To: Viresh Kumar , "Rafael J. Wysocki" , Zhang Rui , Eduardo Valentin Cc: "cpufreq@vger.kernel.org" , Linux PM list , Jonghwa Lee , Lukasz Majewski , l.majewski@majess.pl, linux-kernel , Andre Przywara , Daniel Lezcano , Kukjin Kim , Myungjoo Ham Subject: [PATCH v5 6/7] cpufreq:boost:Kconfig: Enable software managed BOOST support at Kconfig Date: Thu, 04 Jul 2013 10:50:29 +0200 Message-id: <1372927830-2949-7-git-send-email-l.majewski@samsung.com> X-Mailer: git-send-email 1.7.10 In-reply-to: <1372927830-2949-1-git-send-email-l.majewski@samsung.com> References: <1370502472-7249-1-git-send-email-l.majewski@samsung.com> <1372927830-2949-1-git-send-email-l.majewski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrPLMWRmVeSWpSXmKPExsVy+t9jAd1O86uBBldOcVn8ebuc1eJp0w92 i3mfZS3W7P/JZNF59gmzRe+Cq2wWbx5xW7x5uJnR4vKuOWwWn3uPMFrcblzBZtG/sJfJ4snD PjaLjV89HPg8Fu95yeRx59oeNo91094ye/RtWcXo8WhxC6PH8RvbmTw+b5ILYI/isklJzcks Sy3St0vgyjh77wZTwU6RinUfZ7A0MN4X6GLk5JAQMJH4+eMmI4QtJnHh3nq2LkYuDiGBRYwS zXOOs0I4XUwSy7dMYgapYhPQk/h89ykTiC0iMIdR4s5RdxCbWWAls8SJRkcQW1ggUeLLtd/s IDaLgKrE1Nm72EBsXgFXidcL29ggtslLPL3fB2ZzCrhJXL7QwwSxrJFRYkPHB5YJjLwLGBlW MYqmFiQXFCel5xrqFSfmFpfmpesl5+duYgQH6zOpHYwrGywOMQpwMCrx8EpYXQkUYk0sK67M PcQowcGsJMLrxHE1UIg3JbGyKrUoP76oNCe1+BCjNAeLkjjvgVbrQCGB9MSS1OzU1ILUIpgs EwenVANjae0Tvsvml2fEpV6NfuL46MzUcoXsnlrrFa8WLZK9Z3tQ5OHq35cFFJ+23L/OM2H/ hVu9kxOL797ccD9ngbPjhh0BMXe1TzfHz886lrjEwDVH8oh6gsmMuz8FJmyZw3FUeIP2XK/f ipLLH/98MOXuNL/wBYH5qp8TJnpePLJhxfl+Vo8j85UfnFZiKc5INNRiLipOBAAWGohkUgIA AA== Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Spam-Status: No, score=-7.1 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 For safety reasons new flag - CONFIG_CPU_FREQ_BOOST_SW has been added. Only after selecting "CPU frequency BOOST support" Kconfig option the software managed boost is enabled. It also selects thermal subsystem to be compiled in. Thermal is necessary for disabling boost and cooling down the device when overheating detected. Boost _MUST_NOT_ be enabled without thermal subsystem with properly defined temperatures, which indicate overheating. This option doesn't affect x86's ACPI hardware managed boost support (i.e. Intel, AMD). In this situation boost management is embedded at hardware. Signed-off-by: Lukasz Majewski Signed-off-by: Myungjoo Ham --- Changes for v5: - New patch drivers/cpufreq/Kconfig | 14 ++++++++++++++ drivers/cpufreq/exynos-cpufreq.c | 5 ++++- 2 files changed, 18 insertions(+), 1 deletion(-) diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig index 534fcb8..e65a112 100644 --- a/drivers/cpufreq/Kconfig +++ b/drivers/cpufreq/Kconfig @@ -23,6 +23,20 @@ config CPU_FREQ_TABLE config CPU_FREQ_GOV_COMMON bool +config CPU_FREQ_BOOST_SW + bool "CPU frequency overclocking (BOOST)" + depends on ARM_EXYNOS_CPUFREQ && EXYNOS_THERMAL + default n + help + This driver supports software managed overclocking (BOOST). + It allows usage of special frequencies for a particular processor + if thermal conditions are appropriate. + + It reguires, for safe operation, thermal framework with properly defined + trip points. + + If in doubt, say N. + config CPU_FREQ_STAT tristate "CPU frequency translation statistics" select CPU_FREQ_TABLE diff --git a/drivers/cpufreq/exynos-cpufreq.c b/drivers/cpufreq/exynos-cpufreq.c index 4f42fcc..7586b28 100644 --- a/drivers/cpufreq/exynos-cpufreq.c +++ b/drivers/cpufreq/exynos-cpufreq.c @@ -288,7 +288,9 @@ static struct cpufreq_driver exynos_driver = { static int __init exynos_cpufreq_init(void) { +#ifdef CONFIG_CPU_FREQ_BOOST_SW struct device_node *node = pdev->dev.of_node; +#endif int ret = -EINVAL; exynos_info = kzalloc(sizeof(struct exynos_dvfs_info), GFP_KERNEL); @@ -319,9 +321,10 @@ static int __init exynos_cpufreq_init(void) } locking_frequency = exynos_getspeed(0); +#ifdef CONFIG_CPU_FREQ_BOOST_SW if (of_property_read_bool(node, "boost_mode")) exynos_driver.boost_supported = 1; - +#endif register_pm_notifier(&exynos_cpufreq_nb); if (cpufreq_register_driver(&exynos_driver)) {