Re: [PATCH v2] drm/i915: Add RP1 render P state thresholds in CHV

[Daniel Vetter <daniel@ffwll.ch>]

On Fri, Jul 11, 2014 at 07:07:33PM +0300, Mika Kuoppala wrote:
> deepak.s@linux.intel.com writes:
> 
> > From: Deepak S <deepak.s@linux.intel.com>
> >
> > This is useful for userspace utilities to verify and micromanaging
> > the increase/decrease frequncy.
> >
> > v2: Use vlv_gpu_freq to get freq (Deepak)
> >
> > Signed-off-by: Deepak S <deepak.s@linux.intel.com>
> > ---
> >  drivers/gpu/drm/i915/intel_pm.c | 15 +++++++++++++++
> >  1 file changed, 15 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> > index 3fb65e9..225b6cb 100644
> > --- a/drivers/gpu/drm/i915/intel_pm.c
> > +++ b/drivers/gpu/drm/i915/intel_pm.c
> > @@ -3809,6 +3809,16 @@ static int cherryview_rps_rpe_freq(struct drm_i915_private *dev_priv)
> >  	return rpe;
> >  }
> >  
> > +int cherryview_rps_guar_freq(struct drm_i915_private *dev_priv)
> ^^static
> Daniel said he will add it, missing in other patches too.
> 
> Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>

Ok, I've stitched it together and merged to dinq, thanks.
-Daniel

> 
> > +{
> > +	u32 val, rp1;
> > +
> > +	val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
> > +	rp1 = (val >> PUNIT_GPU_STATUS_MAX_FREQ_SHIFT) & PUNIT_GPU_STATUS_MAX_FREQ_MASK;
> > +
> > +	return rp1;
> > +}
> > +
> >  int cherryview_rps_min_freq(struct drm_i915_private *dev_priv)
> >  {
> >  	u32 val, rpn;
> > @@ -4010,6 +4020,11 @@ static void cherryview_init_gt_powersave(struct drm_device *dev)
> >  			 vlv_gpu_freq(dev_priv, dev_priv->rps.efficient_freq),
> >  			 dev_priv->rps.efficient_freq);
> >  
> > +	dev_priv->rps.rp1_freq = cherryview_rps_guar_freq(dev_priv);
> > +	DRM_DEBUG_DRIVER("RP1(Guar) GPU freq: %d MHz (%u)\n",
> > +			 vlv_gpu_freq(dev_priv, dev_priv->rps.rp1_freq),
> > +			 dev_priv->rps.rp1_freq);
> > +
> >  	dev_priv->rps.min_freq = cherryview_rps_min_freq(dev_priv);
> >  	DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n",
> >  			 vlv_gpu_freq(dev_priv, dev_priv->rps.min_freq),
> > -- 
> > 1.9.1
> >
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch