Commit 2a0f9270 authored by Bhawanpreet Lakha's avatar Bhawanpreet Lakha Committed by Alex Deucher
Browse files

drm/amd/display: handle DP cpirq 



[Why]
This is needed for DP as DP can send us info using irq.

[How]
Check if irq bit is set on short pulse and call the
function that handles cpirq in amdgpu_dm_hdcp

Signed-off-by: default avatarBhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 0c8620d6

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

+15 −0
Original line number Diff line number Diff line
@@ -1626,6 +1626,12 @@ static void handle_hpd_rx_irq(void *param) 
	struct dc_link *dc_link = aconnector->dc_link;

	bool is_mst_root_connector = aconnector->mst_mgr.mst_state;

	enum dc_connection_type new_connection_type = dc_connection_none;

#ifdef CONFIG_DRM_AMD_DC_HDCP

	union hpd_irq_data hpd_irq_data;

	struct amdgpu_device *adev = dev->dev_private;



	memset(&hpd_irq_data, 0, sizeof(hpd_irq_data));

#endif



	/*

	 * TODO:Temporary add mutex to protect hpd interrupt not have a gpio
@@ -1635,7 +1641,12 @@ static void handle_hpd_rx_irq(void *param) 
	if (dc_link->type != dc_connection_mst_branch)

		mutex_lock(&aconnector->hpd_lock);





#ifdef CONFIG_DRM_AMD_DC_HDCP

	if (dc_link_handle_hpd_rx_irq(dc_link, &hpd_irq_data, NULL) &&

#else

	if (dc_link_handle_hpd_rx_irq(dc_link, NULL, NULL) &&

#endif

			!is_mst_root_connector) {

		/* Downstream Port status changed. */

		if (!dc_link_detect_sink(dc_link, &new_connection_type))
@@ -1670,6 +1681,10 @@ static void handle_hpd_rx_irq(void *param) 
			drm_kms_helper_hotplug_event(dev);

		}

	}

#ifdef CONFIG_DRM_AMD_DC_HDCP

	if (hpd_irq_data.bytes.device_service_irq.bits.CP_IRQ)

		hdcp_handle_cpirq(adev->dm.hdcp_workqueue,  aconnector->base.index);

#endif

	if ((dc_link->cur_link_settings.lane_count != LANE_COUNT_UNKNOWN) ||

	    (dc_link->type == dc_connection_mst_branch))

		dm_handle_hpd_rx_irq(aconnector);

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