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drm/amd/display: Add display only once.

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[Why]
We call add display multiple times because DESIRED->ENABLED cannot
happen instantaneously. We can't compare the new_state/old_state to
avoid this because on unplug we set the state to DESIRED and on hotplug
the state will still be DESIRED.

[How]
Add a flag to dm_connector_state to keep track of when to enable or
disable HDCP

Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: Zhan Liu <zhan.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Bhawanpreet Lakha
2019-09-26 16:55:24 -04:00
committed by Alex Deucher
parent c28f91dc5e
commit 97f6c91787
2 changed files with 14 additions and 4 deletions
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3
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
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@@ -483,6 +483,9 @@ struct dm_connector_state {
uint8_t underscan_hborder;
bool underscan_enable;
bool freesync_capable;
#ifdef CONFIG_DRM_AMD_DC_HDCP
bool update_hdcp;
#endif
uint8_t abm_level;
int vcpi_slots;
uint64_t pbn;