[Intel-gfx] [PATCH 3/9] drm/i915/psr: Enable sink to trigger a interruption on PSR2 CRC mismatch

[Rodrigo Vivi]

On Mon, Nov 26, 2018 at 04:37:04PM -0800, 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>
> Cc: Rodrigo Vivi <rodrigo.vivi 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 888e348cc1b4..607c3ec41679 100644
> --- a/drivers/gpu/drm/i915/intel_psr.c
> +++ b/drivers/gpu/drm/i915/intel_psr.c
> @@ -390,7 +390,7 @@ 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;

good catch!


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



>  	} else {
>  		if (dev_priv->psr.link_standby)
>  			dpcd_val |= DP_PSR_MAIN_LINK_ACTIVE;
> -- 
> 2.19.2
>