[Intel-gfx] [PATCH 3/8] drm/i915/psr: Enable sink to trigger a interruption on PSR2 CRC mismatch

[Pandiyan, Dhinakaran]

On Thu, 2018-09-20 at 13:43 -0700, José Roberto de Souza wrote:
> eDP spec states 2 different bits to enable sink to trigger a
> interruption when there is a CRC mismatch.
> DP_PSR_CRC_VERIFICATION is for PSR only and
> DP_PSR_IRQ_HPD_WITH_CRC_ERRORS is for PSR2 only.
> 
> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
> Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
> ---
>  drivers/gpu/drm/i915/intel_psr.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_psr.c
> b/drivers/gpu/drm/i915/intel_psr.c
> index 6f3c6f0c539f..b4edbbda8d71 100644
> --- a/drivers/gpu/drm/i915/intel_psr.c
> +++ b/drivers/gpu/drm/i915/intel_psr.c
> @@ -340,7 +340,7 @@ static void intel_psr_enable_sink(struct intel_dp
> *intel_dp)
>  	if (dev_priv->psr.psr2_enabled) {
>  		drm_dp_dpcd_writeb(&intel_dp->aux,
> DP_RECEIVER_ALPM_CONFIG,
>  				   DP_ALPM_ENABLE);
> -		dpcd_val |= DP_PSR_ENABLE_PSR2;
> +		dpcd_val |= DP_PSR_ENABLE_PSR2 |
> DP_PSR_IRQ_HPD_WITH_CRC_ERRORS;
>  	} 
	} else if (INTEL_GEN(dev_priv) >=8) {

		dpcd_val |= DP_PSR_CRC_VERIFICATION;
	}

How about doing this for clarity? 


	
>  
>  	if (dev_priv->psr.link_standby)