Commit d20ebea8 authored Jul 16, 2019 by Lyude Paul

drm/amdgpu/dm: Resume short HPD IRQs before resuming MST topology



Since we're going to be reprobing the entire topology state on resume
now using sideband transactions, we need to ensure that we actually have
short HPD irqs enabled before calling drm_dp_mst_topology_mgr_resume().
So, do that.

Changes since v3:
* Fix typo in comments

Cc: Juston Li <juston.li@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Harry Wentland <hwentlan@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191022023641.8026-13-lyude@redhat.com

parent 6857f879

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

+3 −3

Original line number	Diff line number	Diff line
		@@ -1186,15 +1186,15 @@ static int dm_resume(void *handle)
		/* program HPD filter */
		dc_resume(dm->dc);

		/* On resume we need to rewrite the MSTM control bits to enamble MST*/
		s3_handle_mst(ddev, false);

		/*
		* early enable HPD Rx IRQ, should be done before set mode as short
		* pulse interrupts are used for MST
		*/
		amdgpu_dm_irq_resume_early(adev);

		/* On resume we need to rewrite the MSTM control bits to enable MST*/
		s3_handle_mst(ddev, false);

		/* Do detection*/
		drm_connector_list_iter_begin(ddev, &iter);
		drm_for_each_connector_iter(connector, &iter) {

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