[Intel-gfx] [PATCH v4] drm/i915: Force GPU Freq to lowest while suspending.

[Jesse Barnes]

On Tue, 15 Jul 2014 13:05:48 +0530
Deepak S <deepak.s at linux.intel.com> wrote:

> 
> On Friday 20 June 2014 08:03 PM, deepak.s at linux.intel.com wrote:
> > From: Deepak S <deepak.s at linux.intel.com>
> >
> > We might be leaving the GPU Frequency (and thus vnn) high during the suspend.
> > Force gt to move to lowest freq while suspending.
> >
> > v2: Fixed typo in commit message (Deepak)
> >
> > v3: Force gt to lowest freq in suspend_gt_powersave (Daniel)
> >
> > v4: Add GPU min freq set _after_ we've cancelled the rps works (Daniel)
> >
> > Signed-off-by: Deepak S <deepak.s at linux.intel.com>
> > ---
> >   drivers/gpu/drm/i915/intel_pm.c | 3 +++
> >   1 file changed, 3 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> > index 2043c4b..0543407 100644
> > --- a/drivers/gpu/drm/i915/intel_pm.c
> > +++ b/drivers/gpu/drm/i915/intel_pm.c
> > @@ -4884,6 +4884,9 @@ void intel_suspend_gt_powersave(struct drm_device *dev)
> >   	flush_delayed_work(&dev_priv->rps.delayed_resume_work);
> >   
> >   	cancel_work_sync(&dev_priv->rps.work);
> > +
> > +	/* Force GPU to min freq during suspend */
> > +	gen6_rps_idle(dev_priv);
> >   }
> >   
> >   void intel_disable_gt_powersave(struct drm_device *dev)
> 
> Hi Jesse,
> 
> Please review the patch

Reviewed-by: Jesse Barnes <jbarnes at virtuousgeek.org>

-- 
Jesse Barnes, Intel Open Source Technology Center