[Intel-gfx] [PATCH v3 3/4] drm/i915: hdcp_check_link only on CP_IRQ

[Daniel Vetter]

On Mon, Oct 22, 2018 at 07:46:04PM +0530, Ramalingam C wrote:
> HDCP check link is invoked only on CP_IRQ detection, instead of all
> short pulses.
> 
> v3:
>   No Changes.
> v4:
>   Added sean in cc and collected the reviewed-by received.
> v5:
>   No Change.
> v6:
>   No Change.
> v7:
>   No Change.
> v8:
>   Rebased.
> 
> Signed-off-by: Ramalingam C <ramalingam.c at intel.com>
> cc: Sean Paul <seanpaul at chromium.org>
> Reviewed-by: Uma Shankar <uma.shankar at intel.com>
> Reviewed-by: Sean Paul <seanpaul at chromium.org>
Reviewed-by: Daniel Vetter <daniel.vetter at ffwll.ch>

> ---
>  drivers/gpu/drm/i915/intel_dp.c | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index 1f098e509143..27377bf8105c 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -4530,8 +4530,11 @@ static void intel_dp_check_service_irq(struct intel_dp *intel_dp)
>  	if (val & DP_AUTOMATED_TEST_REQUEST)
>  		intel_dp_handle_test_request(intel_dp);
>  
> -	if (val & (DP_CP_IRQ | DP_SINK_SPECIFIC_IRQ))
> -		DRM_DEBUG_DRIVER("CP or sink specific irq unhandled\n");
> +	if (val & DP_CP_IRQ)
> +		intel_hdcp_check_link(intel_dp->attached_connector);
> +
> +	if (val & DP_SINK_SPECIFIC_IRQ)
> +		DRM_DEBUG_DRIVER("Sink specific irq unhandled\n");
>  }
>  
>  /*
> @@ -5694,9 +5697,6 @@ intel_dp_hpd_pulse(struct intel_digital_port *intel_dig_port, bool long_hpd)
>  
>  		handled = intel_dp_short_pulse(intel_dp);
>  
> -		/* Short pulse can signify loss of hdcp authentication */
> -		intel_hdcp_check_link(intel_dp->attached_connector);
> -
>  		if (!handled)
>  			goto put_power;
>  	}
> -- 
> 2.7.4
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch