Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753969AbdF0WyF (ORCPT ); Tue, 27 Jun 2017 18:54:05 -0400 Received: from cloudserver094114.home.net.pl ([79.96.170.134]:53730 "EHLO cloudserver094114.home.net.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753461AbdF0WyA (ORCPT ); Tue, 27 Jun 2017 18:54:00 -0400 From: "Rafael J. Wysocki" To: Mikko Perttunen , ulf.hansson@linaro.org Cc: khilman@kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, cyndis@kapsi.fi Subject: Re: [PATCH v3] PM / Domains: Call driver's noirq callbacks Date: Wed, 28 Jun 2017 00:46:33 +0200 Message-ID: <2563367.LhaMUqlW8y@aspire.rjw.lan> User-Agent: KMail/4.14.10 (Linux/4.12.0-rc1+; KDE/4.14.9; x86_64; ; ) In-Reply-To: <1498115913-8785-1-git-send-email-mperttunen@nvidia.com> References: <1498115913-8785-1-git-send-email-mperttunen@nvidia.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4828 Lines: 158 On Thursday, June 22, 2017 10:18:33 AM Mikko Perttunen wrote: > Currently genpd installs its own noirq callbacks, but never calls down > to the driver's corresponding callbacks. Add these calls. > > Signed-off-by: Mikko Perttunen Ulf? > --- > v3: > - Factored out common code in pm_genpd_{suspend,poweroff}_noirq > - Added pm_generic_* calls to rest of callbacks > > drivers/base/power/domain.c | 68 +++++++++++++++++++++++++++++++++++++++------ > 1 file changed, 59 insertions(+), 9 deletions(-) > > diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c > index d3f1d96f75e9..248c5f79f588 100644 > --- a/drivers/base/power/domain.c > +++ b/drivers/base/power/domain.c > @@ -899,19 +899,19 @@ static int pm_genpd_prepare(struct device *dev) > } > > /** > - * pm_genpd_suspend_noirq - Completion of suspend of device in an I/O PM domain. > + * genpd_finish_suspend - Completion of suspend or hibernation of device in an > + * I/O pm domain. > * @dev: Device to suspend. > + * @poweroff: Specifies if this is a poweroff_noirq or suspend_noirq callback. > * > * Stop the device and remove power from the domain if all devices in it have > * been stopped. > */ > -static int pm_genpd_suspend_noirq(struct device *dev) > +static int genpd_finish_suspend(struct device *dev, bool poweroff) > { > struct generic_pm_domain *genpd; > int ret; > > - dev_dbg(dev, "%s()\n", __func__); > - > genpd = dev_to_genpd(dev); > if (IS_ERR(genpd)) > return -EINVAL; > @@ -919,6 +919,13 @@ static int pm_genpd_suspend_noirq(struct device *dev) > if (dev->power.wakeup_path && genpd_dev_active_wakeup(genpd, dev)) > return 0; > > + if (poweroff) > + ret = pm_generic_poweroff_noirq(dev); > + else > + ret = pm_generic_suspend_noirq(dev); > + if (ret) > + return ret; > + > if (genpd->dev_ops.stop && genpd->dev_ops.start) { > ret = pm_runtime_force_suspend(dev); > if (ret) > @@ -934,6 +941,20 @@ static int pm_genpd_suspend_noirq(struct device *dev) > } > > /** > + * pm_genpd_suspend_noirq - Completion of suspend of device in an I/O PM domain. > + * @dev: Device to suspend. > + * > + * Stop the device and remove power from the domain if all devices in it have > + * been stopped. > + */ > +static int pm_genpd_suspend_noirq(struct device *dev) > +{ > + dev_dbg(dev, "%s()\n", __func__); > + > + return genpd_finish_suspend(dev, false); > +} > + > +/** > * pm_genpd_resume_noirq - Start of resume of device in an I/O PM domain. > * @dev: Device to resume. > * > @@ -961,6 +982,10 @@ static int pm_genpd_resume_noirq(struct device *dev) > if (genpd->dev_ops.stop && genpd->dev_ops.start) > ret = pm_runtime_force_resume(dev); > > + ret = pm_generic_resume_noirq(dev); > + if (ret) > + return ret; > + > return ret; > } > > @@ -984,6 +1009,10 @@ static int pm_genpd_freeze_noirq(struct device *dev) > if (IS_ERR(genpd)) > return -EINVAL; > > + ret = pm_generic_freeze_noirq(dev); > + if (ret) > + return ret; > + > if (genpd->dev_ops.stop && genpd->dev_ops.start) > ret = pm_runtime_force_suspend(dev); > > @@ -1008,10 +1037,28 @@ static int pm_genpd_thaw_noirq(struct device *dev) > if (IS_ERR(genpd)) > return -EINVAL; > > - if (genpd->dev_ops.stop && genpd->dev_ops.start) > + if (genpd->dev_ops.stop && genpd->dev_ops.start) { > ret = pm_runtime_force_resume(dev); > + if (ret) > + return ret; > + } > > - return ret; > + return pm_generic_thaw_noirq(dev); > +} > + > +/** > + * pm_genpd_poweroff_noirq - Completion of hibernation of device in an > + * I/O PM domain. > + * @dev: Device to poweroff. > + * > + * Stop the device and remove power from the domain if all devices in it have > + * been stopped. > + */ > +static int pm_genpd_poweroff_noirq(struct device *dev) > +{ > + dev_dbg(dev, "%s()\n", __func__); > + > + return genpd_finish_suspend(dev, true); > } > > /** > @@ -1048,10 +1095,13 @@ static int pm_genpd_restore_noirq(struct device *dev) > genpd_sync_power_on(genpd, true, 0); > genpd_unlock(genpd); > > - if (genpd->dev_ops.stop && genpd->dev_ops.start) > + if (genpd->dev_ops.stop && genpd->dev_ops.start) { > ret = pm_runtime_force_resume(dev); > + if (ret) > + return ret; > + } > > - return ret; > + return pm_generic_restore_noirq(dev); > } > > /** > @@ -1493,7 +1543,7 @@ int pm_genpd_init(struct generic_pm_domain *genpd, > genpd->domain.ops.resume_noirq = pm_genpd_resume_noirq; > genpd->domain.ops.freeze_noirq = pm_genpd_freeze_noirq; > genpd->domain.ops.thaw_noirq = pm_genpd_thaw_noirq; > - genpd->domain.ops.poweroff_noirq = pm_genpd_suspend_noirq; > + genpd->domain.ops.poweroff_noirq = pm_genpd_poweroff_noirq; > genpd->domain.ops.restore_noirq = pm_genpd_restore_noirq; > genpd->domain.ops.complete = pm_genpd_complete; > >