[Intel-gfx] [PATCH v2 27/50] drm/i915/adl_p: Handle TC cold

[Imre Deak]

On Thu, Mar 25, 2021 at 11:06:57AM -0700, Matt Roper wrote:
> From: José Roberto de Souza <jose.souza at intel.com>
> 
> On ADL-P TC cold is exited and blocked when legacy aux is powered,
> that is exacly the same of what ICL need for static TC ports.
> 
> TODO: When a TBT hub or monitor is connected it will cause TBT and
> legacy aux to be powered at the same time, hopefully this will not
> cause any issues but if it do, some rework will be needed.

This needs Jose's patch to disable the assert in
intel_tc_port_reset_mode().

> 
> BSpec: 55480
> Cc: Imre Deak <imre.deak at intel.com>
> Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
> Signed-off-by: Clinton Taylor <Clinton.A.Taylor at intel.com>
> Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_display_power.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
> index 20cfb86c0174..3e407d0bf363 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_power.c
> +++ b/drivers/gpu/drm/i915/display/intel_display_power.c
> @@ -550,7 +550,8 @@ static void icl_tc_port_assert_ref_held(struct drm_i915_private *dev_priv,
>  	if (drm_WARN_ON(&dev_priv->drm, !dig_port))
>  		return;
>  
> -	if (IS_DISPLAY_VER(dev_priv, 11) && dig_port->tc_legacy_port)
> +	if (IS_ALDERLAKE_P(dev_priv) ||
> +	   (IS_DISPLAY_VER(dev_priv, 11) && dig_port->tc_legacy_port))
>  		return;
>  
>  	drm_WARN_ON(&dev_priv->drm, !intel_tc_port_ref_held(dig_port));
> -- 
> 2.25.4
> 
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