[Intel-gfx] [PATCH 5/7] drm/i915: Limit Wa_22010178259 to affected platforms

[Matt Roper]

On Thu, Jul 08, 2021 at 02:18:25PM -0700, José Roberto de Souza wrote:
> This workaround is not needed for platforms with display 13.
> 
> Cc: Gwan-gyeong Mun <gwan-gyeong.mun at intel.com>
> Signed-off-by: José Roberto de Souza <jose.souza at intel.com>

Reviewed-by: Matt Roper <matthew.d.roper at intel.com>

> ---
>  drivers/gpu/drm/i915/display/intel_display_power.c | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
> index 285380079aab2..6fc766da66054 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_power.c
> +++ b/drivers/gpu/drm/i915/display/intel_display_power.c
> @@ -5822,10 +5822,11 @@ static void tgl_bw_buddy_init(struct drm_i915_private *dev_priv)
>  			intel_de_write(dev_priv, BW_BUDDY_PAGE_MASK(i),
>  				       table[config].page_mask);
>  
> -			/* Wa_22010178259:tgl,rkl */
> -			intel_de_rmw(dev_priv, BW_BUDDY_CTL(i),
> -				     BW_BUDDY_TLB_REQ_TIMER_MASK,
> -				     BW_BUDDY_TLB_REQ_TIMER(0x8));
> +			/* Wa_22010178259:tgl,dg1,rkl,adl-s */
> +			if (DISPLAY_VER(dev_priv) == 12)
> +				intel_de_rmw(dev_priv, BW_BUDDY_CTL(i),
> +					     BW_BUDDY_TLB_REQ_TIMER_MASK,
> +					     BW_BUDDY_TLB_REQ_TIMER(0x8));
>  		}
>  	}
>  }
> -- 
> 2.32.0
> 
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-- 
Matt Roper
Graphics Software Engineer
VTT-OSGC Platform Enablement
Intel Corporation
(916) 356-2795