From patchwork Wed Sep 10 12:08:26 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Petazzoni X-Patchwork-Id: 4876681 Return-Path: X-Original-To: patchwork-linux-arm-msm@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 0C5E79F32E for ; Wed, 10 Sep 2014 12:08:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E12E72013D for ; Wed, 10 Sep 2014 12:08:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 871772018B for ; Wed, 10 Sep 2014 12:08:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751185AbaIJMIg (ORCPT ); Wed, 10 Sep 2014 08:08:36 -0400 Received: from top.free-electrons.com ([176.31.233.9]:36837 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751094AbaIJMIe (ORCPT ); Wed, 10 Sep 2014 08:08:34 -0400 Received: by mail.free-electrons.com (Postfix, from userid 106) id 7F521756; Wed, 10 Sep 2014 14:08:33 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-9.4 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from localhost (col31-4-88-188-83-94.fbx.proxad.net [88.188.83.94]) by mail.free-electrons.com (Postfix) with ESMTPSA id F069C6D4; Wed, 10 Sep 2014 14:08:32 +0200 (CEST) From: Thomas Petazzoni To: Viresh Kumar Cc: Rafael Wysocki , Lists linaro-kernel , "linux-pm@vger.kernel.org" , Shawn Guo , Stephen Boyd , "linux-arm-msm@vger.kernel.org" , Sachin Kamat , Thomas Abraham , Santosh Shilimkar , "pramod.gurav@smartplayin.com" , Rob Herring , Mike Turquette , Gregory Clement , Ezequiel Garcia , Tawfik Bayouk , Nadav Haklai , Lior Amsalem , Thomas Petazzoni Subject: [PATCHv2 2/4] cpufreq: cpufreq-dt: extend with platform_data Date: Wed, 10 Sep 2014 14:08:26 +0200 Message-Id: <1410350908-11316-3-git-send-email-thomas.petazzoni@free-electrons.com> X-Mailer: git-send-email 2.0.0 In-Reply-To: <1410350908-11316-1-git-send-email-thomas.petazzoni@free-electrons.com> References: <1410350908-11316-1-git-send-email-thomas.petazzoni@free-electrons.com> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This commit extends the cpufreq-dt driver to take a platform_data structure. This structure is for now used to tell the cpufreq-dt driver the layout of the clocks on the platform, i.e whether all CPUs share the same clock or whether each CPU has a separate clock. Signed-off-by: Thomas Petazzoni --- drivers/cpufreq/cpufreq-dt.c | 17 +++++++++++++++-- include/linux/cpufreq-dt.h | 22 ++++++++++++++++++++++ 2 files changed, 37 insertions(+), 2 deletions(-) create mode 100644 include/linux/cpufreq-dt.h diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c index e002650..987bbfa 100644 --- a/drivers/cpufreq/cpufreq-dt.c +++ b/drivers/cpufreq/cpufreq-dt.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include #include @@ -178,6 +179,7 @@ try_again: static int cpufreq_init(struct cpufreq_policy *policy) { + struct cpufreq_dt_platform_data *pd; struct cpufreq_frequency_table *freq_table; struct thermal_cooling_device *cdev; struct device_node *np; @@ -266,9 +268,18 @@ static int cpufreq_init(struct cpufreq_policy *policy) policy->driver_data = priv; policy->clk = cpu_clk; - ret = cpufreq_generic_init(policy, freq_table, transition_latency); - if (ret) + ret = cpufreq_table_validate_and_show(policy, freq_table); + if (ret) { + dev_err(cpu_dev, "%s: invalid frequency table: %d\n", __func__, + ret); goto out_cooling_unregister; + } + + policy->cpuinfo.transition_latency = transition_latency; + + pd = cpufreq_get_driver_data(); + if (pd && !pd->independent_clocks) + cpumask_setall(policy->cpus); return 0; @@ -334,6 +345,8 @@ static int dt_cpufreq_probe(struct platform_device *pdev) if (!IS_ERR(cpu_reg)) regulator_put(cpu_reg); + dt_cpufreq_driver.driver_data = dev_get_platdata(&pdev->dev); + ret = cpufreq_register_driver(&dt_cpufreq_driver); if (ret) dev_err(cpu_dev, "failed register driver: %d\n", ret); diff --git a/include/linux/cpufreq-dt.h b/include/linux/cpufreq-dt.h new file mode 100644 index 0000000..0414009 --- /dev/null +++ b/include/linux/cpufreq-dt.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2014 Marvell + * Thomas Petazzoni + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __CPUFREQ_DT_H__ +#define __CPUFREQ_DT_H__ + +struct cpufreq_dt_platform_data { + /* + * True when each CPU has its own clock to control its + * frequency, false when all CPUs are controlled by a single + * clock. + */ + bool independent_clocks; +}; + +#endif /* __CPUFREQ_DT_H__ */