From mboxrd@z Thu Jan 1 00:00:00 1970 From: Leonard Crestez Subject: [PATCH v5 1/2] PM / Domains: Add GENPD_FLAG_RPM_ALWAYS_ON flag Date: Tue, 30 Apr 2019 15:06:11 +0000 Message-ID: <30247a52be55c3cb31d16b8ac0710d3ad51eea09.1556636234.git.leonard.crestez@nxp.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Ulf Hansson , Lucas Stach , Shawn Guo Cc: Aisheng Dong , "linux-pm@vger.kernel.org" , Viresh Kumar , "Rafael J. Wysocki" , dl-linux-imx , "kernel@pengutronix.de" , Fabio Estevam , "linux-arm-kernel@lists.infradead.org" List-Id: linux-pm@vger.kernel.org This is for power domains which can only be powered off for suspend but not as part of runtime PM. Suggested-by: Ulf Hansson Signed-off-by: Leonard Crestez --- drivers/base/power/domain.c | 8 ++++++-- include/linux/pm_domain.h | 4 ++++ 2 files changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 7a6aa2318915..33c30c1e6a30 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -126,10 +126,11 @@ static const struct genpd_lock_ops genpd_spin_ops = { #define genpd_status_on(genpd) (genpd->status == GPD_STATE_ACTIVE) #define genpd_is_irq_safe(genpd) (genpd->flags & GENPD_FLAG_IRQ_SAFE) #define genpd_is_always_on(genpd) (genpd->flags & GENPD_FLAG_ALWAYS_ON) #define genpd_is_active_wakeup(genpd) (genpd->flags & GENPD_FLAG_ACTIVE_WAKEUP) #define genpd_is_cpu_domain(genpd) (genpd->flags & GENPD_FLAG_CPU_DOMAIN) +#define genpd_is_rpm_always_on(genpd) (genpd->flags & GENPD_FLAG_RPM_ALWAYS_ON) static inline bool irq_safe_dev_in_no_sleep_domain(struct device *dev, const struct generic_pm_domain *genpd) { bool ret; @@ -513,11 +514,13 @@ static int genpd_power_off(struct generic_pm_domain *genpd, bool one_dev_on, /* * Abort power off for the PM domain in the following situations: * (1) The domain is configured as always on. * (2) When the domain has a subdomain being powered on. */ - if (genpd_is_always_on(genpd) || atomic_read(&genpd->sd_count) > 0) + if (genpd_is_always_on(genpd) || + genpd_is_rpm_always_on(genpd) || + atomic_read(&genpd->sd_count) > 0) return -EBUSY; list_for_each_entry(pdd, &genpd->dev_list, list_node) { enum pm_qos_flags_status stat; @@ -1810,11 +1813,12 @@ int pm_genpd_init(struct generic_pm_domain *genpd, genpd->dev_ops.stop = pm_clk_suspend; genpd->dev_ops.start = pm_clk_resume; } /* Always-on domains must be powered on at initialization. */ - if (genpd_is_always_on(genpd) && !genpd_status_on(genpd)) + if ((genpd_is_always_on(genpd) || genpd_is_rpm_always_on(genpd)) && + !genpd_status_on(genpd)) return -EINVAL; if (genpd_is_cpu_domain(genpd) && !zalloc_cpumask_var(&genpd->cpus, GFP_KERNEL)) return -ENOMEM; diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index 0e8e356bed6a..b21f35f0ee2e 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -51,16 +51,20 @@ * deploy idle power management support for CPUs * and groups of CPUs. Note that, the backend * driver must then comply with the so called, * last-man-standing algorithm, for the CPUs in the * PM domain. + * + * GENPD_FLAG_RPM_ALWAYS_ON: Instructs genpd to always keep the PM domain + * powered on except for system suspend. */ #define GENPD_FLAG_PM_CLK (1U << 0) #define GENPD_FLAG_IRQ_SAFE (1U << 1) #define GENPD_FLAG_ALWAYS_ON (1U << 2) #define GENPD_FLAG_ACTIVE_WAKEUP (1U << 3) #define GENPD_FLAG_CPU_DOMAIN (1U << 4) +#define GENPD_FLAG_RPM_ALWAYS_ON (1U << 5) enum gpd_status { GPD_STATE_ACTIVE = 0, /* PM domain is active */ GPD_STATE_POWER_OFF, /* PM domain is off */ }; -- 2.17.1 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_HELO_NONE,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 D0F5DC04AA6 for ; Tue, 30 Apr 2019 15:06:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 962B820652 for ; Tue, 30 Apr 2019 15:06:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=nxp.com header.i=@nxp.com header.b="EsAuthXk" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726150AbfD3PGT (ORCPT ); Tue, 30 Apr 2019 11:06:19 -0400 Received: from mail-eopbgr50089.outbound.protection.outlook.com ([40.107.5.89]:30126 "EHLO EUR03-VE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725995AbfD3PGS (ORCPT ); Tue, 30 Apr 2019 11:06:18 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=ig1Wrbhoin6EXNLkp5xNBfhV8s78xH9gLtnPEZMutrQ=; b=EsAuthXkizoIxqPHR5nj58R417bZ10F6nTSeNHjVU6ypx9iHnwsynoeuQY3kPhowIyb7gYpTQTC0vKAEk0BhVayL53M3RaPxOo2QM8re2cJC/C9KLXtnj5LMEpLxFTPPtST/5eZSQGLyikGaptHq+X7UK0x6y7YGdBJA67VYd1I= Received: from AM6PR04MB6440.eurprd04.prod.outlook.com (20.179.244.217) by AM6PR04MB5895.eurprd04.prod.outlook.com (20.179.3.216) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1856.10; Tue, 30 Apr 2019 15:06:11 +0000 Received: from AM6PR04MB6440.eurprd04.prod.outlook.com ([fe80::14c2:1e08:524c:6ff4]) by AM6PR04MB6440.eurprd04.prod.outlook.com ([fe80::14c2:1e08:524c:6ff4%2]) with mapi id 15.20.1856.008; Tue, 30 Apr 2019 15:06:11 +0000 From: Leonard Crestez To: Ulf Hansson , Lucas Stach , Shawn Guo CC: Aisheng Dong , Fabio Estevam , Viresh Kumar , "Rafael J. Wysocki" , "linux-pm@vger.kernel.org" , "kernel@pengutronix.de" , dl-linux-imx , "linux-arm-kernel@lists.infradead.org" Subject: [PATCH v5 1/2] PM / Domains: Add GENPD_FLAG_RPM_ALWAYS_ON flag Thread-Topic: [PATCH v5 1/2] PM / Domains: Add GENPD_FLAG_RPM_ALWAYS_ON flag Thread-Index: AQHU/2Y/h66odknpyEW0dAeBUTxZEg== Date: Tue, 30 Apr 2019 15:06:11 +0000 Message-ID: <30247a52be55c3cb31d16b8ac0710d3ad51eea09.1556636234.git.leonard.crestez@nxp.com> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [89.37.124.34] x-mailer: git-send-email 2.17.1 x-clientproxiedby: VI1PR0902CA0058.eurprd09.prod.outlook.com (2603:10a6:802:1::47) To AM6PR04MB6440.eurprd04.prod.outlook.com (2603:10a6:20b:f4::25) authentication-results: spf=none (sender IP is ) smtp.mailfrom=leonard.crestez@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 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