Re: [PATCH v4 03/16] drm/i915/hotplug: Handle CP_IRQ for DP-MST

[Ramalingam C]

On 2020-10-27 at 22:11:55 +0530, Anshuman Gupta wrote:
> Handle CP_IRQ in DEVICE_SERVICE_IRQ_VECTOR_ESI0
> It requires to call intel_hdcp_handle_cp_irq() in case
> of CP_IRQ is triggered by a sink in DP-MST topology.
> 
> Cc: "Ville Syrjälä" 
> Cc: Ramalingam C 
> Reviewed-by: Uma Shankar 
Reviewed-by: Ramalingam C 
> Signed-off-by: Anshuman Gupta 
> ---
>  drivers/gpu/drm/i915/display/intel_dp.c | 14 +-
>  1 file changed, 13 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c 
> b/drivers/gpu/drm/i915/display/intel_dp.c
> index 818daab252f3..21c6c9828cd7 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -5657,6 +5657,17 @@ static void intel_dp_handle_test_request(struct 
> intel_dp *intel_dp)
>   "Could not write test response to sink\n");
>  }
>  
> +static void
> +intel_dp_mst_hpd_irq(struct intel_dp *intel_dp, u8 *esi, bool *handled)
> +{
> + drm_dp_mst_hpd_irq(_dp->mst_mgr, esi, handled);
> +
> + if (esi[1] & DP_CP_IRQ) {
> + intel_hdcp_handle_cp_irq(intel_dp->attached_connector);
> + *handled = true;
> + }
> +}
> +
>  /**
>   * intel_dp_check_mst_status - service any pending MST interrupts, check 
> link status
>   * @intel_dp: Intel DP struct
> @@ -5701,7 +5712,8 @@ intel_dp_check_mst_status(struct intel_dp *intel_dp)
>  
>   drm_dbg_kms(>drm, "got esi %3ph\n", esi);
>  
> - drm_dp_mst_hpd_irq(_dp->mst_mgr, esi, );
> + intel_dp_mst_hpd_irq(intel_dp, esi, );
> +
>   if (!handled)
>   break;
>  
> -- 
> 2.26.2
> 
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[PATCH v4 03/16] drm/i915/hotplug: Handle CP_IRQ for DP-MST

[Anshuman Gupta]

Handle CP_IRQ in DEVICE_SERVICE_IRQ_VECTOR_ESI0
It requires to call intel_hdcp_handle_cp_irq() in case
of CP_IRQ is triggered by a sink in DP-MST topology.

Cc: "Ville Syrjälä" 
Cc: Ramalingam C 
Reviewed-by: Uma Shankar 
Signed-off-by: Anshuman Gupta 
---
 drivers/gpu/drm/i915/display/intel_dp.c | 14 +-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c 
b/drivers/gpu/drm/i915/display/intel_dp.c
index 818daab252f3..21c6c9828cd7 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -5657,6 +5657,17 @@ static void intel_dp_handle_test_request(struct intel_dp 
*intel_dp)
"Could not write test response to sink\n");
 }
 
+static void
+intel_dp_mst_hpd_irq(struct intel_dp *intel_dp, u8 *esi, bool *handled)
+{
+   drm_dp_mst_hpd_irq(_dp->mst_mgr, esi, handled);
+
+   if (esi[1] & DP_CP_IRQ) {
+   intel_hdcp_handle_cp_irq(intel_dp->attached_connector);
+   *handled = true;
+   }
+}
+
 /**
  * intel_dp_check_mst_status - service any pending MST interrupts, check link 
status
  * @intel_dp: Intel DP struct
@@ -5701,7 +5712,8 @@ intel_dp_check_mst_status(struct intel_dp *intel_dp)
 
drm_dbg_kms(>drm, "got esi %3ph\n", esi);
 
-   drm_dp_mst_hpd_irq(_dp->mst_mgr, esi, );
+   intel_dp_mst_hpd_irq(intel_dp, esi, );
+
if (!handled)
break;
 
-- 
2.26.2

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