From patchwork Wed Oct 1 14:41:33 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ulf Hansson X-Patchwork-Id: 5012291 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 0251E9F327 for ; Wed, 1 Oct 2014 14:44:49 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DFF5720263 for ; Wed, 1 Oct 2014 14:44:47 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E6D632015D for ; Wed, 1 Oct 2014 14:44:46 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XZL7M-0005GC-It; Wed, 01 Oct 2014 14:43:00 +0000 Received: from mail-la0-f51.google.com ([209.85.215.51]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XZL6n-0004NT-WC for linux-arm-kernel@lists.infradead.org; Wed, 01 Oct 2014 14:42:27 +0000 Received: by mail-la0-f51.google.com with SMTP id ge10so466407lab.38 for ; Wed, 01 Oct 2014 07:42:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=AsIWlxvHLQwjUJt+GZhXoEYYfIok+GJqX9XX0Y+2/nw=; b=Ep4ulTwtYAMVmctPA+tN5qNemX6DN1mVoD/jUbPqDZXDa0CWtOPRHxnI3oNCRzKeWI EQcQ4b6xhqo7IzSZxiYonRsJZ3/ZC7rkFjs+Z2XiBWaga6AyAB1v+c3NksLXIIo1a9qR 1+claDvP+AW6cLc7sfyCnskgCfvCbB11RSM8ORMLasx+5eZoaHn6kbhCQ66L2Vf0BWSY 74/TS2AlG1IuFYjTgP2pnbpW31fAdwiS9QXvpKCJj8j29bju0NCgLmDC2kz5oRo2q2eX F3tV94OH6+346pPswtPiK+WHQA7HYyFxXwyner/Z04hNyYobgLiYowm57Xb8dd/TR6pl gMdQ== X-Gm-Message-State: ALoCoQmRWMN6e7nJfZJ2Xfi3CtUpibHuzErggG0cKikskQPslyp2tSm14pyoZbuXNdEBZIDy52Q6 X-Received: by 10.112.134.101 with SMTP id pj5mr52360918lbb.47.1412174522781; Wed, 01 Oct 2014 07:42:02 -0700 (PDT) Received: from uffe-Latitude-E6430s.lan (90-231-160-185-no158.tbcn.telia.com. [90.231.160.185]) by mx.google.com with ESMTPSA id rl6sm485466lac.17.2014.10.01.07.41.59 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 01 Oct 2014 07:42:01 -0700 (PDT) From: Ulf Hansson To: "Rafael J. Wysocki" , Len Brown , Pavel Machek , linux-pm@vger.kernel.org Subject: [PATCH v2 3/4] PM / Domains: Expect PM domains being powered at initialization Date: Wed, 1 Oct 2014 16:41:33 +0200 Message-Id: <1412174494-15346-4-git-send-email-ulf.hansson@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1412174494-15346-1-git-send-email-ulf.hansson@linaro.org> References: <1412174494-15346-1-git-send-email-ulf.hansson@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20141001_074226_444997_6CE46E3C X-CRM114-Status: GOOD ( 18.21 ) X-Spam-Score: -0.7 (/) Cc: Simon Horman , Ulf Hansson , Kevin Hilman , Russell King , Philipp Zabel , Geert Uytterhoeven , Wolfram Sang , Greg Kroah-Hartman , Mark Brown , Dmitry Torokhov , Magnus Damm , Tomasz Figa , linux-samsung-soc@vger.kernel.org, Alan Stern , Ben Dooks , Jinkun Hong , Kukjin Kim , Jack Dai , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP At ->probe() it's common practice for drivers/subsystems to bring their devices to full power and without depending on CONFIG_PM_RUNTIME. We could also expect that drivers/subsystems requires their device's corresponding PM domains to be powered, to successfully complete a ->probe() sequence. Align the generic PM domain to the behavior above, by enforcing a PM domain to be powered at initialization. Previous patch changed the only call of pm_genpd_init() with "true" for the "is_off" parameter into "false". Thus all calls of pm_genpd_init() now uses "false" as the value for "is_off". To make it clear that genpd currently only supports powered PM domains at init, let's also remove the "is_off" parameter from the API. Signed-off-by: Ulf Hansson Acked-by: Geert Uytterhoeven Acked-by: Simon Horman --- arch/arm/mach-exynos/pm_domains.c | 2 +- arch/arm/mach-s3c64xx/pm.c | 4 ++-- arch/arm/mach-shmobile/pm-r8a7779.c | 2 +- arch/arm/mach-shmobile/pm-rmobile.c | 2 +- drivers/base/power/domain.c | 5 ++--- include/linux/pm_domain.h | 4 ++-- 6 files changed, 9 insertions(+), 10 deletions(-) diff --git a/arch/arm/mach-exynos/pm_domains.c b/arch/arm/mach-exynos/pm_domains.c index 58e18e9..f2e5096 100644 --- a/arch/arm/mach-exynos/pm_domains.c +++ b/arch/arm/mach-exynos/pm_domains.c @@ -158,7 +158,7 @@ no_clk: if (!(__raw_readl(pd->base + 0x4) & INT_LOCAL_PWR_EN)) exynos_pd_power_on(&pd->pd); - pm_genpd_init(&pd->pd, NULL, false); + pm_genpd_init(&pd->pd, NULL); of_genpd_add_provider_simple(np, &pd->pd); } diff --git a/arch/arm/mach-s3c64xx/pm.c b/arch/arm/mach-s3c64xx/pm.c index aaf7bea..42dead0 100644 --- a/arch/arm/mach-s3c64xx/pm.c +++ b/arch/arm/mach-s3c64xx/pm.c @@ -315,10 +315,10 @@ int __init s3c64xx_pm_init(void) for (i = 0; i < ARRAY_SIZE(s3c64xx_always_on_pm_domains); i++) pm_genpd_init(&s3c64xx_always_on_pm_domains[i]->pd, - &pm_domain_always_on_gov, false); + &pm_domain_always_on_gov); for (i = 0; i < ARRAY_SIZE(s3c64xx_pm_domains); i++) - pm_genpd_init(&s3c64xx_pm_domains[i]->pd, NULL, false); + pm_genpd_init(&s3c64xx_pm_domains[i]->pd, NULL); #ifdef CONFIG_S3C_DEV_FB if (dev_get_platdata(&s3c_device_fb.dev)) diff --git a/arch/arm/mach-shmobile/pm-r8a7779.c b/arch/arm/mach-shmobile/pm-r8a7779.c index 82fe3d7..c20ef44 100644 --- a/arch/arm/mach-shmobile/pm-r8a7779.c +++ b/arch/arm/mach-shmobile/pm-r8a7779.c @@ -83,7 +83,7 @@ static void r8a7779_init_pm_domain(struct r8a7779_pm_domain *r8a7779_pd) { struct generic_pm_domain *genpd = &r8a7779_pd->genpd; - pm_genpd_init(genpd, NULL, false); + pm_genpd_init(genpd, NULL); genpd->dev_ops.stop = pm_clk_suspend; genpd->dev_ops.start = pm_clk_resume; genpd->dev_ops.active_wakeup = pd_active_wakeup; diff --git a/arch/arm/mach-shmobile/pm-rmobile.c b/arch/arm/mach-shmobile/pm-rmobile.c index 818de2f..e6a0490 100644 --- a/arch/arm/mach-shmobile/pm-rmobile.c +++ b/arch/arm/mach-shmobile/pm-rmobile.c @@ -107,7 +107,7 @@ static void rmobile_init_pm_domain(struct rmobile_pm_domain *rmobile_pd) struct generic_pm_domain *genpd = &rmobile_pd->genpd; struct dev_power_governor *gov = rmobile_pd->gov; - pm_genpd_init(genpd, gov ? : &simple_qos_governor, false); + pm_genpd_init(genpd, gov ? : &simple_qos_governor); genpd->dev_ops.stop = pm_clk_suspend; genpd->dev_ops.start = pm_clk_resume; genpd->dev_ops.active_wakeup = rmobile_pd_active_wakeup; diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c index 36871b3..cfb76e8 100644 --- a/drivers/base/power/domain.c +++ b/drivers/base/power/domain.c @@ -1836,10 +1836,9 @@ static int pm_genpd_default_restore_state(struct device *dev) * pm_genpd_init - Initialize a generic I/O PM domain object. * @genpd: PM domain object to initialize. * @gov: PM domain governor to associate with the domain (may be NULL). - * @is_off: Initial value of the domain's power_is_off field. */ void pm_genpd_init(struct generic_pm_domain *genpd, - struct dev_power_governor *gov, bool is_off) + struct dev_power_governor *gov) { if (IS_ERR_OR_NULL(genpd)) return; @@ -1852,7 +1851,7 @@ void pm_genpd_init(struct generic_pm_domain *genpd, INIT_WORK(&genpd->power_off_work, genpd_power_off_work_fn); genpd->in_progress = 0; atomic_set(&genpd->sd_count, 0); - genpd->status = is_off ? GPD_STATE_POWER_OFF : GPD_STATE_ACTIVE; + genpd->status = GPD_STATE_ACTIVE; init_waitqueue_head(&genpd->status_wait_queue); genpd->poweroff_task = NULL; genpd->resume_count = 0; diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index a21dfa9..ad4aa87 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -140,7 +140,7 @@ extern int pm_genpd_name_attach_cpuidle(const char *name, int state); extern int pm_genpd_detach_cpuidle(struct generic_pm_domain *genpd); extern int pm_genpd_name_detach_cpuidle(const char *name); extern void pm_genpd_init(struct generic_pm_domain *genpd, - struct dev_power_governor *gov, bool is_off); + struct dev_power_governor *gov); extern int pm_genpd_poweron(struct generic_pm_domain *genpd); extern int pm_genpd_name_poweron(const char *domain_name); @@ -206,7 +206,7 @@ static inline int pm_genpd_name_detach_cpuidle(const char *name) return -ENOSYS; } static inline void pm_genpd_init(struct generic_pm_domain *genpd, - struct dev_power_governor *gov, bool is_off) + struct dev_power_governor *gov) { } static inline int pm_genpd_poweron(struct generic_pm_domain *genpd)