Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754395Ab3DVOPa (ORCPT ); Mon, 22 Apr 2013 10:15:30 -0400 Received: from devils.ext.ti.com ([198.47.26.153]:37269 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753233Ab3DVOP1 (ORCPT ); Mon, 22 Apr 2013 10:15:27 -0400 Message-ID: <517545C2.3080006@ti.com> Date: Mon, 22 Apr 2013 17:14:26 +0300 From: Grygorii Strashko User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130308 Thunderbird/17.0.4 MIME-Version: 1.0 To: Sourav Poddar CC: , , , , , , , Santosh Shilimkar , Felipe Balbi , Rajendra nayak Subject: Re: [RFC/PATCHv2 5/5] arm: omap2+: omap_device: remove no_idle_on_suspend References: <1366638237-6880-1-git-send-email-sourav.poddar@ti.com> <1366638237-6880-6-git-send-email-sourav.poddar@ti.com> In-Reply-To: <1366638237-6880-6-git-send-email-sourav.poddar@ti.com> Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [10.167.145.172] X-EXCLAIMER-MD-CONFIG: f9c360f5-3d1e-4c3c-8703-f45bf52eff6b Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3987 Lines: 108 On 04/22/2013 04:43 PM, Sourav Poddar wrote: > Remove the "OMAP_DEVICE_NO_IDLE_ON_SUSPEND" check, since > driver should be able to prevent idling of an omap device > whenever required. > > Cc: Santosh Shilimkar > Cc: Felipe Balbi > Cc: Rajendra nayak > Cc: Grygorii Strashko > Signed-off-by: Sourav Poddar > --- > Hi Kevin, > > I have put this as an RFC, due to few comments on cover letter of > the previous version by Grygorii Strashko. > As, he has mentioned that there are Audio playback use cases which > also requires "no_idle_on_suspend" and using them on mainline after > this series can cause regression. > > What you think will be the right approach on this in relation to this patch? > I mean every driver(if possible) should prevent > runtime PM for no_idle_on_suspend usecase and we get > rid of this OMAP_DEVICE_NO_IDLE_ON_SUSPEND check? OR we should > drop this patch as of now? > > Hi Grygorii, > > Is it possible to handle ABE no_idle_on_suspend uscase the way I am > trying to handle it for UART in the 2nd patch of this series? Unfortunately, I don't know ASOC details (my part is PM), but from the first look it will be not easy, because map4-dmic have no Runtime PM handlers at all, for example (( > > arch/arm/mach-omap2/omap_device.c | 12 +++--------- > arch/arm/mach-omap2/omap_device.h | 10 ---------- > 2 files changed, 3 insertions(+), 19 deletions(-) > > diff --git a/arch/arm/mach-omap2/omap_device.c b/arch/arm/mach-omap2/omap_device.c > index 381be7a..2043d71 100644 > --- a/arch/arm/mach-omap2/omap_device.c > +++ b/arch/arm/mach-omap2/omap_device.c > @@ -170,9 +170,6 @@ static int omap_device_build_from_dt(struct platform_device *pdev) > r->name = dev_name(&pdev->dev); > } > > - if (of_get_property(node, "ti,no_idle_on_suspend", NULL)) > - omap_device_disable_idle_on_suspend(pdev); > - > pdev->dev.pm_domain = &omap_device_pm_domain; > > odbfd_exit1: > @@ -620,11 +617,9 @@ static int _od_suspend_noirq(struct device *dev) > ret = pm_generic_suspend_noirq(dev); > > if (!ret && !pm_runtime_status_suspended(dev)) { > - if (pm_generic_runtime_suspend(dev) == 0) { > - if (!(od->flags & OMAP_DEVICE_NO_IDLE_ON_SUSPEND)) > - omap_device_idle(pdev); > + if (pm_generic_runtime_suspend(dev) == 0) > + omap_device_idle(pdev); > od->flags |= OMAP_DEVICE_SUSPENDED; > - } > } > > return ret; > @@ -638,8 +633,7 @@ static int _od_resume_noirq(struct device *dev) > if ((od->flags & OMAP_DEVICE_SUSPENDED) && > !pm_runtime_status_suspended(dev)) { > od->flags &= ~OMAP_DEVICE_SUSPENDED; > - if (!(od->flags & OMAP_DEVICE_NO_IDLE_ON_SUSPEND)) > - omap_device_enable(pdev); > + omap_device_enable(pdev); > pm_generic_runtime_resume(dev); > } > > diff --git a/arch/arm/mach-omap2/omap_device.h b/arch/arm/mach-omap2/omap_device.h > index 044c31d..17ca1ae 100644 > --- a/arch/arm/mach-omap2/omap_device.h > +++ b/arch/arm/mach-omap2/omap_device.h > @@ -38,7 +38,6 @@ extern struct dev_pm_domain omap_device_pm_domain; > > /* omap_device.flags values */ > #define OMAP_DEVICE_SUSPENDED BIT(0) > -#define OMAP_DEVICE_NO_IDLE_ON_SUSPEND BIT(1) > > /** > * struct omap_device - omap_device wrapper for platform_devices > @@ -101,13 +100,4 @@ static inline struct omap_device *to_omap_device(struct platform_device *pdev) > { > return pdev ? pdev->archdata.od : NULL; > } > - > -static inline > -void omap_device_disable_idle_on_suspend(struct platform_device *pdev) > -{ > - struct omap_device *od = to_omap_device(pdev); > - > - od->flags |= OMAP_DEVICE_NO_IDLE_ON_SUSPEND; > -} > - > #endif -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/