From patchwork Mon Mar 20 13:42:13 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abel Vesa X-Patchwork-Id: 13181287 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 96F5AC761AF for ; Mon, 20 Mar 2023 13:42:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231282AbjCTNmk (ORCPT ); Mon, 20 Mar 2023 09:42:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49750 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231318AbjCTNma (ORCPT ); Mon, 20 Mar 2023 09:42:30 -0400 Received: from mail-ed1-x52a.google.com (mail-ed1-x52a.google.com [IPv6:2a00:1450:4864:20::52a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BE9BDC663 for ; Mon, 20 Mar 2023 06:42:27 -0700 (PDT) Received: by mail-ed1-x52a.google.com with SMTP id ek18so46904183edb.6 for ; Mon, 20 Mar 2023 06:42:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1679319745; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=wjKiN0F5wVydodH1DdUegjCL8bujRKxDngFdNV9Cs2c=; b=CDVGNXBPBN3zdUl7FjlFIv2E0h2geCNhMI1PP8HGrSgTs+BJuRsvUQ8kKvW/9nHD6N ow11RnoeG6AyipGzzUF/lO2TgVbEawbgTLBNGTuFejZWb9xACrAOTxT0Pc+DyojUHoQj z6XSF+lwJMKFBd7D22ZkGy7V0IY7K+0c1K3HQzE2X+WVa7wCm1IXg4yUc2lPx8QODOc3 mS04vNuhq8CkG3cvPfStcuTLNmf7zvbJHoA98VNoLA4Ehm4wvwJ9NS5qSTVeudyu4MSB 3XpH2Aq0TssgKopj8KOSAqljUq6V79aGyWyrfVrfP4Q0Gl5ncE9tOmeL9rZtZSNVqcba ZPrA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1679319745; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=wjKiN0F5wVydodH1DdUegjCL8bujRKxDngFdNV9Cs2c=; b=nJIfo9RLOSILLapZbOZGkom2HXpKYeplCwXNB4gshJ5vQI/fdGRaIFmNn55v0zW2dD Fe3d3vUY7CHOdcVU365hxavKSbTPumdDukfuDm1qWuI6lI6Fhj4nkt8vd0gQL0NmuXkM Tm8Z3EExtFVEQ9d0aw0brqfTL01K//s15KFKh2grL6nMOWdAtbwsNa34Gzi7fXvMTpq/ bKElu6OniB9h0dqQodZW23GzDhlC41Tfx3Pdn7s7pP5DONLneheDCFLetkUNn3+Gxmpw rxNQUbQQn6Eoy2iwpeVeiBq4P+jkMLU8n2QqA1b2Rf/jV6w823uFKEKOPeO4dVv27he+ KpMw== X-Gm-Message-State: AO0yUKXFq9CPfWd6656vVrnbF7rRdktRjSvj55lXBuhGw3J4dKB3VSEr vDDuIv39K8IG/DiCZZ1C/muvVA== X-Google-Smtp-Source: AK7set8fdXj5wZW+bwPsLGCClZ5wHbtWt3lGG6NeFx2qa6Ytz64EWWAV2hS1cYoBxEYSKOOASiOrVw== X-Received: by 2002:a17:906:1e85:b0:931:1567:f84f with SMTP id e5-20020a1709061e8500b009311567f84fmr8266966ejj.4.1679319745664; Mon, 20 Mar 2023 06:42:25 -0700 (PDT) Received: from localhost.localdomain ([94.52.112.99]) by smtp.gmail.com with ESMTPSA id u23-20020a170906409700b009334a6ef3e8sm2368602ejj.141.2023.03.20.06.42.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Mar 2023 06:42:25 -0700 (PDT) From: Abel Vesa To: "Rafael J. Wysocki" , Kevin Hilman , Ulf Hansson , Pavel Machek , Len Brown , Greg Kroah-Hartman , Bjorn Andersson , Andy Gross , Konrad Dybcio , Mike Turquette , Stephen Boyd , Saravana Kannan Cc: linux-pm@vger.kernel.org, Linux Kernel Mailing List , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, Doug Anderson , Matthias Kaehlcke Subject: [RFC PATCH v2 1/5] PM: domains: Allow power off queuing from providers Date: Mon, 20 Mar 2023 15:42:13 +0200 Message-Id: <20230320134217.1685781-2-abel.vesa@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230320134217.1685781-1-abel.vesa@linaro.org> References: <20230320134217.1685781-1-abel.vesa@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org In some cases, the providers might choose to refuse powering off some domains until all of the consumer have had a chance to probe, that is, until sync state callback has been called. Such providers might choose to disable such domains on their on, from the sync state callback. So, in order to do that, they need a way to queue up a power off request. Since the generic genpd already has such API, make that available to those providers. Signed-off-by: Abel Vesa --- drivers/base/power/domain.c | 3 ++- include/linux/pm_domain.h | 6 ++++++ 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 32084e38b73d..97d4e2f2da91 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -649,10 +649,11 @@ static int _genpd_power_off(struct generic_pm_domain *genpd, bool timed) * Queue up the execution of genpd_power_off() unless it's already been done * before. */ -static void genpd_queue_power_off_work(struct generic_pm_domain *genpd) +void genpd_queue_power_off_work(struct generic_pm_domain *genpd) { queue_work(pm_wq, &genpd->power_off_work); } +EXPORT_SYMBOL_GPL(genpd_queue_power_off_work); /** * genpd_power_off - Remove power from a given PM domain. diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index f776fb93eaa0..f9729640f87e 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -231,6 +231,7 @@ int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd, int pm_genpd_init(struct generic_pm_domain *genpd, struct dev_power_governor *gov, bool is_off); int pm_genpd_remove(struct generic_pm_domain *genpd); +void genpd_queue_power_off_work(struct generic_pm_domain *genpd); int dev_pm_genpd_set_performance_state(struct device *dev, unsigned int state); int dev_pm_genpd_add_notifier(struct device *dev, struct notifier_block *nb); int dev_pm_genpd_remove_notifier(struct device *dev); @@ -278,6 +279,11 @@ static inline int pm_genpd_remove(struct generic_pm_domain *genpd) return -EOPNOTSUPP; } +void genpd_queue_power_off_work(struct generic_pm_domain *genpd) +{ + return -EOPNOTSUPP; +} + static inline int dev_pm_genpd_set_performance_state(struct device *dev, unsigned int state) {