[Intel-gfx] [PATCH 1/4] drm/i915/display: Ignore IGNORE_PSR2_HW_TRACKING for platforms without sel fetch

[Rodrigo Vivi]

On Mon, Aug 31, 2020 at 06:09:21PM -0700, José Roberto de Souza wrote:
> For platforms without selective fetch this register is reserved so
> do not write 0 to it.
> 
> Cc: Gwan-gyeong Mun <gwan-gyeong.mun at intel.com>
> Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Signed-off-by: José Roberto de Souza <jose.souza at intel.com>

Reviewed-by: Rodrigo Vivi <rodrigo.vivi at intel.com>

> ---
>  drivers/gpu/drm/i915/display/intel_psr.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
> index 8a9d0bdde1bf..4e09ae61d4aa 100644
> --- a/drivers/gpu/drm/i915/display/intel_psr.c
> +++ b/drivers/gpu/drm/i915/display/intel_psr.c
> @@ -942,7 +942,7 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp,
>  		intel_de_write(dev_priv, EXITLINE(cpu_transcoder), val);
>  	}
>  
> -	if (HAS_PSR_HW_TRACKING(dev_priv))
> +	if (HAS_PSR_HW_TRACKING(dev_priv) && HAS_PSR2_SEL_FETCH(dev_priv))
>  		intel_de_rmw(dev_priv, CHICKEN_PAR1_1, IGNORE_PSR2_HW_TRACKING,
>  			     dev_priv->psr.psr2_sel_fetch_enabled ?
>  			     IGNORE_PSR2_HW_TRACKING : 0);
> -- 
> 2.28.0
> 
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