From patchwork Mon May 13 19:22:54 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ulf Hansson X-Patchwork-Id: 10941685 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 20E1E92A for ; Mon, 13 May 2019 19:31:31 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1318F28113 for ; Mon, 13 May 2019 19:31:31 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 05DF128358; Mon, 13 May 2019 19:31:31 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A10E128113 for ; Mon, 13 May 2019 19:31:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726803AbfEMTb3 (ORCPT ); Mon, 13 May 2019 15:31:29 -0400 Received: from mail-lj1-f193.google.com ([209.85.208.193]:42471 "EHLO mail-lj1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726290AbfEMTb3 (ORCPT ); Mon, 13 May 2019 15:31:29 -0400 Received: by mail-lj1-f193.google.com with SMTP id 188so12078979ljf.9 for ; Mon, 13 May 2019 12:31:27 -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; bh=x3HZaV7vcbo/XhlaM1d9i+kdcoQHiHqHOKB8XCuJnJg=; b=YrDb+TI/qptrO7/5RXe8SeC+HyCzsJJl8ml3Jr2kE2brTGKdFR7/IJ+N4lXVtKfgGo NAHroyR3jEv97wAFOv1N3DRBDosPKmtXcn1hEpIBtK5wsOrvMlCDRGJxZwA8Y/CGP+8R ab2aAEL3gSBOsIHFKZCpimEz0v0pvvsft17f2AvJ1ojeV6J8wLK4ixd+AfhWKPZ/c7ZC sQLCc6Vgosbnw6yG7ZCHQQ1u7R7deMgYPyyYMCopM3U1unF1AFl5Ap4t5OT1xuDe8t5f uoNBPb8pfj6ZvLWRNfIZPJf9225Y1ujm2szcS0/1CCTN+KdvBfR2+owHypKzCboaNJCY oIXg== 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; bh=x3HZaV7vcbo/XhlaM1d9i+kdcoQHiHqHOKB8XCuJnJg=; b=ECfh+Uhzj82/f9hnAL9nZwrktURMpxrRi/Bf41MGDEHe4j+R10CwjN0Wruxmdb2+EQ HV9Hmg94/S8POO50N8rsmbeoBYMvBntcFlBqZUmsMIRTmZZ8rFIgqzP6/u5XTVxQdloL WJj0do74/CeumXJ0rIthhLNdgmQR0WwsSsShsBpEcCUqNrqYDAg5fpvN3EzcFhV3UQrN 7YREAv9kGBv38Td7fl/6UfMJL/jVAup2FePIeQu40UvpK2TSERN+f4DHELS9VfrcEhCq kYmE76X4VndtpGY169TowrmKb8033yhB8v4gzPgcBNHjOdGFqcxQd3wEqgoJ6iyUZBSw 3LRg== X-Gm-Message-State: APjAAAXhd5axz9Fje5taJaA++TUbexw5EGw5xbUhmZ0ovc/9B/K9R7bk oUOI01NItdFMYjF8A1OfP/2i/g== X-Google-Smtp-Source: APXvYqxhImmrN+c//ITxcw8U+57BeFavH+R85RVOLDvIyx6W8pcBzSGLx1AMwoyfzWMRSAkXmhUcdQ== X-Received: by 2002:a2e:206:: with SMTP id 6mr13170535ljc.59.1557775408048; Mon, 13 May 2019 12:23:28 -0700 (PDT) Received: from localhost.localdomain (h-158-174-22-210.NA.cust.bahnhof.se. [158.174.22.210]) by smtp.gmail.com with ESMTPSA id q21sm3449365lfa.84.2019.05.13.12.23.26 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 13 May 2019 12:23:27 -0700 (PDT) From: Ulf Hansson To: Sudeep Holla , Lorenzo Pieralisi , Mark Rutland , linux-arm-kernel@lists.infradead.org Cc: "Rafael J . Wysocki" , Daniel Lezcano , "Raju P . L . S . S . S . N" , Amit Kucheria , Bjorn Andersson , Stephen Boyd , Niklas Cassel , Tony Lindgren , Kevin Hilman , Lina Iyer , Viresh Kumar , Vincent Guittot , Geert Uytterhoeven , Souvik Chakravarty , linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Ulf Hansson Subject: [PATCH 12/18] drivers: firmware: psci: Add a helper to attach a CPU to its PM domain Date: Mon, 13 May 2019 21:22:54 +0200 Message-Id: <20190513192300.653-13-ulf.hansson@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190513192300.653-1-ulf.hansson@linaro.org> References: <20190513192300.653-1-ulf.hansson@linaro.org> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Introduce a new PSCI DT helper function, psci_dt_attach_cpu(), which takes a CPU number as an in-parameter and tries to attach the CPU's struct device to its corresponding PM domain. Let's use dev_pm_domain_attach_by_name(), as to be able to specify "psci" as the required "power-domain-names". Additionally, let the helper prepare the CPU to be power managed via runtime PM. Signed-off-by: Ulf Hansson --- Changes: - Take into account whether the CPU is online/offline. - Convert from dev_pm_domain_attach() into using the more future proof dev_pm_domain_attach_by_name(). --- drivers/firmware/psci/psci.h | 3 +++ drivers/firmware/psci/psci_pm_domain.c | 17 +++++++++++++++++ 2 files changed, 20 insertions(+) diff --git a/drivers/firmware/psci/psci.h b/drivers/firmware/psci/psci.h index c36e0e6649e9..b4254405b8ef 100644 --- a/drivers/firmware/psci/psci.h +++ b/drivers/firmware/psci/psci.h @@ -4,6 +4,7 @@ #define __PSCI_H struct cpuidle_driver; +struct device; struct device_node; int psci_set_osi_mode(void); @@ -16,10 +17,12 @@ int psci_dt_parse_state_node(struct device_node *np, u32 *state); int psci_dt_init_pm_domains(struct device_node *np); int psci_dt_pm_domains_parse_states(struct cpuidle_driver *drv, struct device_node *cpu_node, u32 *psci_states); +struct device *psci_dt_attach_cpu(int cpu); #else static inline int psci_dt_init_pm_domains(struct device_node *np) { return 0; } static inline int psci_dt_pm_domains_parse_states(struct cpuidle_driver *drv, struct device_node *cpu_node, u32 *psci_states) { return 0; } +static inline struct device *psci_dt_attach_cpu(int cpu) { return NULL; } #endif #endif diff --git a/drivers/firmware/psci/psci_pm_domain.c b/drivers/firmware/psci/psci_pm_domain.c index 3aa645dba81b..1cbe745ee001 100644 --- a/drivers/firmware/psci/psci_pm_domain.c +++ b/drivers/firmware/psci/psci_pm_domain.c @@ -12,8 +12,10 @@ #include #include #include +#include #include #include +#include #include #include @@ -383,4 +385,19 @@ int psci_dt_pm_domains_parse_states(struct cpuidle_driver *drv, return 0; } + +struct device *psci_dt_attach_cpu(int cpu) +{ + struct device *dev, *cpu_dev = get_cpu_device(cpu); + + dev = dev_pm_domain_attach_by_name(cpu_dev, "psci"); + if (IS_ERR_OR_NULL(dev)) + return dev; + + pm_runtime_irq_safe(dev); + if (cpu_online(cpu)) + pm_runtime_get_sync(dev); + + return dev; +} #endif