Hi, On Mon, Apr 22, 2013 at 07:13:57PM +0530, 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 <santosh.shilim...@ti.com> > Cc: Felipe Balbi <ba...@ti.com> > Cc: Rajendra nayak <rna...@ti.com> > Cc: Grygorii Strashko <grygorii.stras...@ti.com> > Signed-off-by: Sourav Poddar <sourav.pod...@ti.com> > --- > 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?
let's ask Péter.
Péter, OMAP_DEVICE_NO_IDLE_ON_SUSPEND should be removed as driver's can
get same behavior by just returning -EBUSY from their ->runtime_suspend
callbacks. Do you see any problems with patch below (left for
reference) ? Would it be too difficult to add
->runtime_suspend/->runtime_resume on ASoC layer ?
> 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
> --
> 1.7.1
>
--
balbi
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