From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6E36FC0044C for ; Mon, 5 Nov 2018 06:37:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 238752081D for ; Mon, 5 Nov 2018 06:37:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=linaro.org header.i=@linaro.org header.b="Rj4f5AW1" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 238752081D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729422AbeKEPzV (ORCPT ); Mon, 5 Nov 2018 10:55:21 -0500 Received: from mail-pl1-f196.google.com ([209.85.214.196]:44350 "EHLO mail-pl1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729398AbeKEPzU (ORCPT ); Mon, 5 Nov 2018 10:55:20 -0500 Received: by mail-pl1-f196.google.com with SMTP id s5-v6so3932446plq.11 for ; Sun, 04 Nov 2018 22:37:14 -0800 (PST) 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 :mime-version:content-transfer-encoding; bh=w59iisoJQ78soOoIeJ+J+gAbXxrCAkavZgo9Hnt+aE4=; b=Rj4f5AW1+BA3NUNvWqeTjieSLCp56uqjDOnTkd1zeupuaVDqmjavpQ9jwF4s8XRVfU uuKA4c/VT/XVQwq29U5ELFcqai41MZ62End4FWp2TXM43zl1KnFDh8+Meup6iU2IUSHa YmLF1RhPKhm5I2eKi7ukKVLRX5HcMC36ERHLs= 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:mime-version:content-transfer-encoding; bh=w59iisoJQ78soOoIeJ+J+gAbXxrCAkavZgo9Hnt+aE4=; b=lAQgNP/qBlADrvJU6w0JyGUCMm9JvZ+5Zto8JWHtmjJrJRyfSWFezdu0KRu+jeLNOp 59aeCfVlhm9rHoEJe2/PRZ6KNnYqA6bEylTYU7/OtIjrbjdBZNwAoePUg7xXATHLaH0g cFhLIsIFqIo7Od8VQhY3gnRQmecbfVUCgpXlCPHwHxp2U6UjSiXYkftaBGY3OzMDIjf6 1EVqxBGv7lh26NtV4mc8Ai50e/uJIkWED72HEguA1qZxj1NiOYHcBrRwAY4vKjY3onGE l/s9i+W/xw2anw0cZ+YRZIzwxQPNjQOfxS+trl4JQhuxVXr1aKiy7mfWCzFkXZw63X9T bNrw== X-Gm-Message-State: AGRZ1gJqz8UdGZFAPNkrPw1SpeQpMxFti7X33oMxy0uAthWRyTINFwCW z0XkV0u/6R0X34v96H6aYvONTQ== X-Google-Smtp-Source: AJdET5fhDFxR95kWS0fcU3f92QPJrhEgQZDOHpKe20DxevoGhrB81Q7ysM0rPNPYtty58zzLRoou9w== X-Received: by 2002:a17:902:a9:: with SMTP id a38-v6mr9378635pla.7.1541399833493; Sun, 04 Nov 2018 22:37:13 -0800 (PST) Received: from localhost ([171.61.116.174]) by smtp.gmail.com with ESMTPSA id m5-v6sm52108824pfc.188.2018.11.04.22.37.12 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 04 Nov 2018 22:37:12 -0800 (PST) From: Viresh Kumar To: ulf.hansson@linaro.org, Viresh Kumar , Nishanth Menon , Stephen Boyd , "Rafael J. Wysocki" Cc: Viresh Kumar , linux-pm@vger.kernel.org, Vincent Guittot , niklas.cassel@linaro.org, rnayak@codeaurora.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/4] OPP: Add dev_pm_opp_xlate_performance_state() helper Date: Mon, 5 Nov 2018 12:06:43 +0530 Message-Id: X-Mailer: git-send-email 2.19.1.568.g152ad8e3369a In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce a new helper dev_pm_opp_xlate_performance_state() which will be used to translate from pstate of a device to another one. Initially this will be used by genpd to find pstate of a master domain using its sub-domain's pstate. Signed-off-by: Viresh Kumar --- drivers/opp/core.c | 49 ++++++++++++++++++++++++++++++++++++++++++ include/linux/pm_opp.h | 7 ++++++ 2 files changed, 56 insertions(+) diff --git a/drivers/opp/core.c b/drivers/opp/core.c index 0eaa954b3f6c..010a4268e8dd 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -1707,6 +1707,55 @@ void dev_pm_opp_put_genpd_virt_dev(struct opp_table *opp_table, dev_err(virt_dev, "Failed to find required device entry\n"); } +/** + * dev_pm_opp_xlate_performance_state() - Find required OPP's pstate for src_table. + * @src_table: OPP table which has dst_table as one of its required OPP table. + * @dst_table: Required OPP table of the src_table. + * @pstate: Current performance state of the src_table. + * + * This Returns pstate of the OPP (present in @dst_table) pointed out by the + * "required-opps" property of the OPP (present in @src_table) which has + * performance state set to @pstate. + * + * Return: Positive performance state on success, otherwise 0 on errors. + */ +unsigned int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, + struct opp_table *dst_table, + unsigned int pstate) +{ + struct dev_pm_opp *opp; + unsigned int dest_pstate = 0; + int i; + + for (i = 0; i < src_table->required_opp_count; i++) { + if (src_table->required_opp_tables[i] == dst_table) + break; + } + + if (unlikely(i == src_table->required_opp_count)) { + pr_err("%s: Couldn't find matching OPP table (%p: %p)\n", + __func__, src_table, dst_table); + return 0; + } + + mutex_lock(&src_table->lock); + + list_for_each_entry(opp, &src_table->opp_list, node) { + if (opp->pstate == pstate) { + dest_pstate = opp->required_opps[i]->pstate; + goto unlock; + } + } + + pr_err("%s: Couldn't find matching OPP (%p: %p)\n", __func__, src_table, + dst_table); + +unlock: + mutex_unlock(&src_table->lock); + + return dest_pstate; +} + /** * dev_pm_opp_add() - Add an OPP table from a table definitions * @dev: device for which we do this operation diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index 2b2c3fd985ab..5a64a81a1789 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -128,6 +128,7 @@ struct opp_table *dev_pm_opp_register_set_opp_helper(struct device *dev, int (*s void dev_pm_opp_unregister_set_opp_helper(struct opp_table *opp_table); struct opp_table *dev_pm_opp_set_genpd_virt_dev(struct device *dev, struct device *virt_dev, int index); void dev_pm_opp_put_genpd_virt_dev(struct opp_table *opp_table, struct device *virt_dev); +unsigned int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate); int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq); int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask); int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask); @@ -280,6 +281,12 @@ static inline struct opp_table *dev_pm_opp_set_genpd_virt_dev(struct device *dev } static inline void dev_pm_opp_put_genpd_virt_dev(struct opp_table *opp_table, struct device *virt_dev) {} + +static inline unsigned int dev_pm_opp_xlate_performance_state(struct opp_table *src_table, struct opp_table *dst_table, unsigned int pstate) +{ + return 0; +} + static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq) { return -ENOTSUPP; -- 2.19.1.568.g152ad8e3369a