From patchwork Wed Oct 11 07:24:18 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Viresh Kumar X-Patchwork-Id: 115515 Delivered-To: patch@linaro.org Received: by 10.140.22.163 with SMTP id 32csp438002qgn; Wed, 11 Oct 2017 00:25:10 -0700 (PDT) X-Received: by 10.99.96.140 with SMTP id u134mr14567735pgb.191.1507706710224; Wed, 11 Oct 2017 00:25:10 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1507706710; cv=none; d=google.com; s=arc-20160816; b=0cngqVINqAO7AubKsYVz5QLbkccZFTdDcMcNrncwKUXu61jG6rGL43FbRAPor9L3hF 1EU2F7cEACTovsmLnrTrR5Xhx6M1E+2Wu/v7TDCzrPs9s1rcOjTvuQv7dQyY13Pfgmjj NKyPWOLVpPwYNIr6xSzqz2pwW/vvrYVlLkjxVIDAG8t/lzk9pfqNB2bYMqaPusM25xnG /Weq3woVq0kZ+vn2SXn63LC00VGpfWLh3xRaohnUcYCB50Nz9iqmpSzOWanOA43mqcfy CW1C5YH5QHVIt5/qGvGASnPbXqSBL3kbX/sLdWI4mFg6kaX32iI5aAG0EThX5GJbFD93 I8Jg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:references:in-reply-to:references :in-reply-to:message-id:date:subject:cc:to:from:dkim-signature :arc-authentication-results; bh=+f5+QUFkS35RwcgwIT5eMXmRywpl4nq8yoLJDvVqpxE=; b=hnPlCQjSCxTrKCLa1apDurXtf0VtOZQ34rp+y3fv+VfrLGT8UzqbYmu3agJ0p54upX 3KglHuHqu6udJb/lJqSuQ97X/s5ZCkjkC+qMAPpn/BWE0YY50hmWfXY+Z02vJlijo1A6 URU+M2aCOAkucFmtlWDglIuEmOVODtD9KifNlKivvkcgy0CyYy0LWFtSIgQvwOQdPx4A XoX4X5TVRGSbOLMGvImCWQJUueqz8CmA5DIS7BHU45S92Buezw+Wa8A0Qm8dYi87RHt/ RfDZzwMyts6ZE8JlILTEdOsYB5S1bkUaBgaDKw4M5Gt3fRl5MwS9qSWjUwDR1v2JmSx3 5d/Q== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=HCm7OA/g; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id i184si10573120pfc.575.2017.10.11.00.25.10; Wed, 11 Oct 2017 00:25:10 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=HCm7OA/g; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757163AbdJKHZG (ORCPT + 26 others); Wed, 11 Oct 2017 03:25:06 -0400 Received: from mail-pf0-f169.google.com ([209.85.192.169]:54537 "EHLO mail-pf0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757030AbdJKHZD (ORCPT ); Wed, 11 Oct 2017 03:25:03 -0400 Received: by mail-pf0-f169.google.com with SMTP id m28so678060pfi.11 for ; Wed, 11 Oct 2017 00:25:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :in-reply-to:references; bh=+f5+QUFkS35RwcgwIT5eMXmRywpl4nq8yoLJDvVqpxE=; b=HCm7OA/gYp0whS6lFwXeYxdBR7hTbBdGHBmT/cx1C5LPcT/2ryThk2xJ4pqLDdxLen XlnOqOAIbQ7SjFEolUvujWrpbYRDdXhXTeeP4BW48NBaMa040/qsncKA0KFQnJZspH4h rO6qyIub9PvDfqCOTdSZAVPVMbStO18IfSVC0= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:in-reply-to:references; bh=+f5+QUFkS35RwcgwIT5eMXmRywpl4nq8yoLJDvVqpxE=; b=qUdaY3OSMyXyb0lqNkHMySNi4+Jg1GYPvfL6Vh9KtfdMr1wplbBdMSYJ/FzG8k8PVY oURXOZdwPEZHU30EcpkhG6rslRTMb9tKi4nS407Fgp3Ab5bRg3mH4R1QZ4UWyBu+XDAv UmlINKmexZjbKYYJjAYAbs0hIsrQrBW/Znz5m3tfId01f7OHHgqI/nzQPzEosXw+lPos s1qxNU59CfOmNQNSWuUB8s4IlfbtbppvRWuGMuGGXL7Jk9weK37jAidSALLQNk7YIiP/ VqX6qBmd7xxzLRTKFyw3FA0ySB7PC2sDsm0KcCpu9mFRDrfBiokR1v7WFFXe2aQVJmcw 5Q7w== X-Gm-Message-State: AMCzsaUnIRXJqF9hIKDc1Nma3SWb0TbRce541oSwkvFj1LLLxicje3w4 wQRFvpXoEOa2a3QFk2DsPEAJgg== X-Google-Smtp-Source: AOwi7QBZDVdpjqlFdMhF/1luF1LQleByF3xsoCla7LLkm2++fJMRm5SoD/112IG++QsYkjuAiSCBnw== X-Received: by 10.159.211.4 with SMTP id bc4mr7152218plb.160.1507706702926; Wed, 11 Oct 2017 00:25:02 -0700 (PDT) Received: from localhost ([122.172.169.205]) by smtp.gmail.com with ESMTPSA id n19sm22964629pfj.52.2017.10.11.00.25.01 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 11 Oct 2017 00:25:02 -0700 (PDT) From: Viresh Kumar To: Rafael Wysocki , ulf.hansson@linaro.org, Kevin Hilman , Stephen Boyd Cc: Viresh Kumar , linux-pm@vger.kernel.org, Vincent Guittot , Nishanth Menon , robh+dt@kernel.org, lina.iyer@linaro.org, rnayak@codeaurora.org, sudeep.holla@arm.com, linux-kernel@vger.kernel.org, Len Brown , Pavel Machek , Andy Gross , David Brown Subject: [PATCH V11 6/7] OPP: qcom: Add support to get performance states corresponding to OPPs Date: Wed, 11 Oct 2017 12:54:18 +0530 Message-Id: <18686bc52546e9d73e5a08d6875dd80828cdd95e.1507703370.git.viresh.kumar@linaro.org> X-Mailer: git-send-email 2.15.0.rc1.236.g92ea95045093 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org NOT FOR MERGE. The OPP core needs to know the performance state for each OPP that the device supports, if we want to update performance states of the device's PM domain. Add support for Qualcomm's rpmpd for the same. Signed-off-by: Rajendra Nayak Signed-off-by: Viresh Kumar --- drivers/opp/Makefile | 2 + drivers/opp/qcom-rpmpd.c | 107 +++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 109 insertions(+) create mode 100644 drivers/opp/qcom-rpmpd.c -- 2.7.4 diff --git a/drivers/opp/Makefile b/drivers/opp/Makefile index e70ceb406fe9..b565031ce10f 100644 --- a/drivers/opp/Makefile +++ b/drivers/opp/Makefile @@ -2,3 +2,5 @@ ccflags-$(CONFIG_DEBUG_DRIVER) := -DDEBUG obj-y += core.o cpu.o obj-$(CONFIG_OF) += of.o obj-$(CONFIG_DEBUG_FS) += debugfs.o + +obj-$(CONFIG_QCOM_RPMPD) += qcom-rpmpd.o diff --git a/drivers/opp/qcom-rpmpd.c b/drivers/opp/qcom-rpmpd.c new file mode 100644 index 000000000000..ef301d7003d8 --- /dev/null +++ b/drivers/opp/qcom-rpmpd.c @@ -0,0 +1,107 @@ +/* + * Copyright (c) 2017, The Linux Foundation. All rights reserved. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include +#include + +struct device; + +enum rpmpd_levels { + NONE, + LOWER, /* SVS2 */ + LOW, /* SVS */ + NOMINAL, /* NOMINAL */ + HIGH, /* Turbo */ + MAX_LEVEL, +}; + +struct rpmpd_freq_map { + struct device *dev; + unsigned long freq[MAX_LEVEL]; +}; + +enum msm8996_devices { + SDHCI, +}; + +static struct rpmpd_freq_map msm8996_rpmpd_freq_map[] = { + [SDHCI] = { + .freq[LOWER] = 19200000, + .freq[LOW] = 200000000, + .freq[NOMINAL] = 400000000, + }, +}; + +static int get_pstate(struct device *dev, unsigned long rate) +{ + int i, j; + + for (i = 0; i < ARRAY_SIZE(msm8996_rpmpd_freq_map); i++) { + if (dev != msm8996_rpmpd_freq_map[i].dev) + continue; + + for (j = 0; j < MAX_LEVEL; j++) { + if (msm8996_rpmpd_freq_map[i].freq[j] >= rate) + return j; + } + + return MAX_LEVEL; + } + + /* Bug */ + WARN_ON(1); + + return 0; +} + +static const struct of_device_id devices[] = { + { .compatible = "qcom,sdhci-msm-v4", .data = (void *)SDHCI }, + { } +}; + +static int __init rpmpd_opp_init(void) +{ + struct platform_device *pdev; + struct device_node *np; + int i, index; + + if (!of_machine_is_compatible("qcom,msm8996-mtp")) + return 0; + + for (i = 0; i < ARRAY_SIZE(devices); i++) { + np = of_find_compatible_node(NULL, NULL, devices[i].compatible); + if (!np) + continue; + + pdev = of_find_device_by_node(np); + if (!pdev) + pdev = of_platform_device_create(np, NULL, NULL); + + of_node_put(np); + + if (!pdev) + continue; + + index = (enum msm8996_devices)(devices[i].data); + msm8996_rpmpd_freq_map[index].dev = &pdev->dev; + + dev_pm_opp_register_get_pstate_helper(&pdev->dev, get_pstate); + } + + return 0; +} +subsys_initcall(rpmpd_opp_init);