On Sat, Sep 12, 2015 at 10:17:51AM +0530, Sagar Arun Kamble wrote:
> WaRsDisableCoarsePowerGating: Coarse Power Gating (CPG) needs to be
> disabled for platforms prior to BXT B0 and SKL GT3/GT4 till E0.
> 
> v2: Added GT3/GT4 Check.
> 
> Change-Id: Ia3c4c16e050c88d3e259f601054875c812d69c3a
> Signed-off-by: Sagar Arun Kamble <sagar.a.kam...@intel.com>
> ---
>  drivers/gpu/drm/i915/intel_pm.c | 11 +++++++----
>  1 file changed, 7 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 1f6b5bb..c93d3a7 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -4853,11 +4853,14 @@ static void gen9_enable_rc6(struct drm_device *dev)
>  
>       /*
>        * 3b: Enable Coarse Power Gating only when RC6 is enabled.
> -      * WaDisableRenderPowerGating:skl,bxt - Render PG need to be disabled 
> with RC6.
> +      * WaRsDisableCoarsePowerGating:skl,bxt - Render/Media PG need to be 
> disabled with RC6.
>        */
> -     I915_WRITE(GEN9_PG_ENABLE, (rc6_mask & GEN6_RC_CTL_RC6_ENABLE) ?
> -                     GEN9_MEDIA_PG_ENABLE : 0);
> -
> +     if ((IS_BROXTON(dev) && (INTEL_REVID(dev) < BXT_REVID_B0)) ||
> +             ((IS_SKL_GT3(dev) || IS_SKL_GT4(dev)) && (INTEL_REVID(dev) <= 
> SKL_REVID_E0)))

I fixed up the continuation to be aligned properly while applying.
-Daniel

> +             I915_WRITE(GEN9_PG_ENABLE, 0);
> +     else
> +             I915_WRITE(GEN9_PG_ENABLE, (rc6_mask & GEN6_RC_CTL_RC6_ENABLE) ?
> +                             (GEN9_RENDER_PG_ENABLE | GEN9_MEDIA_PG_ENABLE) 
> : 0);
>  
>       intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
>  
> -- 
> 1.9.1
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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