[Intel-gfx] [PATCH 3/3] drm/i915: Enable runtime pm autosuspend by default

[Vivi, Rodrigo]

On Mon, 2021-09-13 at 16:27 +0530, Gupta, Anshuman wrote:
> 
> 
> > -----Original Message-----
> > From: Vivi, Rodrigo <rodrigo.vivi at intel.com>
> > Sent: Friday, September 10, 2021 11:15 PM
> > To: intel-gfx at lists.freedesktop.org
> > Cc: Vivi, Rodrigo <rodrigo.vivi at intel.com>; Daniel Vetter
> > <daniel.vetter at ffwll.ch>; David Weinehall
> > <david.weinehall at linux.intel.com>;
> > Tangudu, Tilak <tilak.tangudu at intel.com>; Deak, Imre
> > <imre.deak at intel.com>;
> > Gupta, Anshuman <anshuman.gupta at intel.com>
> > Subject: [PATCH 3/3] drm/i915: Enable runtime pm autosuspend by
> > default
> > 
> > Let's enable runtime pm autosuspend by default everywhere.
> > 
> > But at this time let's not touch the autosuspend_delay time, what
> > caused some
> > regression on our previous attempt.
> > 
> > v2: CI on some gen9 platforms was not clean. But it came
> >     pretty clean on newer generations. For now, let's
> >     pick gen12 and newer. We will return later to extend
> >     that to older platforms.
> > 
> > Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
> > Cc: David Weinehall <david.weinehall at linux.intel.com>
> > Cc: Tilak Tangudu <tilak.tangudu at intel.com>
> > Cc: Imre Deak <imre.deak at intel.com>
> > Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
> > Reviewed-by: Anshuman Gupta <anshuman.gupta at intel.com> #v1
> > ---
> >  drivers/gpu/drm/i915/intel_runtime_pm.c | 4 ++++
> >  1 file changed, 4 insertions(+)
> > 
> > diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c
> > b/drivers/gpu/drm/i915/intel_runtime_pm.c
> > index f28b5bab61b4..f91a04c3ef14 100644
> > --- a/drivers/gpu/drm/i915/intel_runtime_pm.c
> > +++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
> > @@ -605,6 +605,10 @@ void intel_runtime_pm_enable(struct
> > intel_runtime_pm *rpm)
> >                 pm_runtime_use_autosuspend(kdev);
> >         }
> > 
> > +       /* XXX: Enable by default only for newer platforms for now
> > */
> > +       if (GRAPHICS_VER(i915) >= 12)
> > +               pm_runtime_allow(kdev);
>         Reviewed-by: Anshuman Gupta <anshuman.gupta at intel.com>
>         Looks good to me.
>         Br,
>         Anshuman Gupta.

Not so fast though :(
We found some bugs on DG2. Tilak will take a look there before we can
push this.

Thanks,
Rodrigo.


> > +
> >         /*
> >          * The core calls the driver load handler with an RPM
> > reference held.
> >          * We drop that here and will reacquire it during unloading
> > in
> > --
> > 2.31.1
>