[PATCH 2/2] drm/xe: Add missing HPD interrupt enabling during non-d3cold RPM resume

[Imre Deak]

On Mon, Oct 07, 2024 at 02:52:22PM -0400, Rodrigo Vivi wrote:
> On Mon, Oct 07, 2024 at 09:46:53PM +0300, Imre Deak wrote:
> > On Mon, Oct 07, 2024 at 09:29:46PM +0300, Cavitt, Jonathan wrote:
> > > -----Original Message-----
> > > From: Intel-xe <intel-xe-bounces at lists.freedesktop.org> On Behalf Of Imre Deak
> > > Sent: Monday, October 7, 2024 7:06 AM
> > > To: intel-xe at lists.freedesktop.org; intel-gfx at lists.freedesktop.org
> > > Cc: Vivi, Rodrigo <rodrigo.vivi at intel.com>
> > > Subject: [PATCH 2/2] drm/xe: Add missing HPD interrupt enabling during non-d3cold RPM resume
> > > >
> > > > Atm the display HPD interrupts that got disabled during runtime
> > > > suspend, are re-enabled only if d3cold is enabled. Fix things by
> > > > also re-enabling the interrupts if d3cold is disabled.
> > > >
> > > > Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
> > > > Signed-off-by: Imre Deak <imre.deak at intel.com>
> > > 
> > > Is there a reason this ended up as a separate patch?
> > 
> > On the principle of doing one thing in one patch: the first is
> > refactoring, this one is a fix.
> 
> We do need this, but we need a lot more.

I think this should be applied before other changes and from your
patchset similar fixes (ideally xe-only changes) should be applied first
before other refactoring changes (I think there are other such changes
there). These fixes could be backported then if needed.

> Please help on the review of the consolidation and the true split:
> https://lore.kernel.org/intel-xe/20240924204222.246862-1-rodrigo.vivi@intel.com/T/#m482df5716f81e6f6a3b5f459f57f193a4292ab52
> 
> > 
> > > Not blocking, just curious.
> > > Reviewed-by: Jonathan Cavitt <jonathan.cavitt at intel.com>
> > > -Jonathan Cavitt
> > > 
> > > > ---
> > > >  drivers/gpu/drm/xe/display/xe_display.c | 1 +
> > > >  1 file changed, 1 insertion(+)
> > > >
> > > > diff --git a/drivers/gpu/drm/xe/display/xe_display.c b/drivers/gpu/drm/xe/display/xe_display.c
> > > > index cb2449b7921ac..695c27ac6b0f8 100644
> > > > --- a/drivers/gpu/drm/xe/display/xe_display.c
> > > > +++ b/drivers/gpu/drm/xe/display/xe_display.c
> > > > @@ -486,6 +486,7 @@ void xe_display_pm_runtime_resume(struct xe_device *xe)
> > > >               return;
> > > >       }
> > > >
> > > > +     intel_hpd_init(xe);
> > > >       intel_hpd_poll_disable(xe);
> > > >  }
> > > >
> > > > --
> > > > 2.44.2
> > > >
> > > >