[Intel-gfx] [PATCH 37/37] drm/i915/dg1: Remove SHPD_FILTER_CNT register programming

[Souza, Jose]

On Wed, 2020-05-20 at 17:38 -0700, Lucas De Marchi wrote:
> From: Anusha Srivatsa <anusha.srivatsa at intel.com>
> 
> Bspec asks us to remove the special programming of the
> SHPD_FILTER_CNT register which we have been doing since CNP+.
> 
> Bspec: 49305
> 

Reviewed-by: José Roberto de Souza <jose.souza at intel.com>

> Cc: Matt Roper <matthew.d.roper at intel.com>
> Signed-off-by: Anusha Srivatsa <anusha.srivatsa at intel.com>
> Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
> ---
>  drivers/gpu/drm/i915/i915_irq.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
> index ca35edef492d..d4061d5b4d67 100644
> --- a/drivers/gpu/drm/i915/i915_irq.c
> +++ b/drivers/gpu/drm/i915/i915_irq.c
> @@ -3274,7 +3274,8 @@ static void icp_hpd_irq_setup(struct drm_i915_private *dev_priv,
>  	hotplug_irqs = sde_ddi_mask | sde_tc_mask;
>  	enabled_irqs = intel_hpd_enabled_irqs(dev_priv, dev_priv->hotplug.pch_hpd);
>  
> -	I915_WRITE(SHPD_FILTER_CNT, SHPD_FILTER_CNT_500_ADJ);
> +	if (INTEL_PCH_TYPE(dev_priv) <= PCH_TGP)
> +		I915_WRITE(SHPD_FILTER_CNT, SHPD_FILTER_CNT_500_ADJ);
>  
>  	ibx_display_interrupt_update(dev_priv, hotplug_irqs, enabled_irqs);
>