linux/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c, branch v6.7

drm/amd/display: Add DCN35 DM Support

2023-08-30T19:51:16Z

[Why & How] Add DM handling for DCN35. Signed-off-by: Qingqing Zhuo Acked-by: Harry Wentland Signed-off-by: Alex Deucher

drm/amd/display: Change HDCP update sequence for DM

2023-08-07T21:14:09Z

Refactor the sequence in hdcp_update_display() to use mod_hdcp_update_display(). Previous sequence: - remove()->add() This Sequence was used to update the display, (mod_hdcp_update_display didn't exist at the time). This meant for any hdcp updates (type changes, enable/disable) we would remove, reconstruct, and add. This leads to unnecessary calls to psp eventually New Sequence using mod_hdcp_update_display(): - add() once when stream is enabled - use update() for all updates The update function checks for prev == new states and will not unnecessarily end up calling psp via add/remove. Reviewed-by: Qingqing Zhuo Acked-by: Tom Chung Signed-off-by: Bhawanpreet Lakha Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Clean up style problems in amdgpu_dm_hdcp.c

2023-07-18T15:09:09Z

Conform to Linux kernel coding style. And promote sysfs entry for set/get srm to kdoc. Suggested-by: Rodrigo Siqueira Cc: Rodrigo Siqueira Cc: Aurabindo Pillai Signed-off-by: Srinivasan Shanmugam Reviewed-by: Aurabindo Pillai Signed-off-by: Alex Deucher

drm/amd/display: Fix HDCP failing to enable after suspend

2023-03-13T21:27:48Z

[Why] On resume some displays are not ready for HDCP, so they will fail if we start the hdcp authentintication too soon. Add a delay so that the displays can be ready before we start. NOTE: Previoulsy this delay was set to 3 seconds but it was causing issues with compliance, 2 seconds should enough for compliance and the s3 resume case. [How] Change the Delay to 2 seconds. Reviewed-by: Aurabindo Pillai Acked-by: Qingqing Zhuo Signed-off-by: Bhawanpreet Lakha Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Updating Video Format Fall Back Policy.

2023-02-28T19:29:35Z

[WHY] Adding 1920x1080 as fail safe mode for Video Format Fall Back Policy. Reviewed-by: Jerry Zuo Acked-by: Qingqing Zhuo Signed-off-by: Jasdeep Dhillon Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: hdcp not enabled on connector 0

2023-01-17T20:41:30Z

[Why] incorrect skip when drm_connector.index = 0 within event_property_validate and update [How] handle hdcp validate and update for connector 0 Tested-by: Daniel Wheeler Reviewed-by: Bhawanpreet Lakha Acked-by: Rodrigo Siqueira Signed-off-by: hersen wu Signed-off-by: Alex Deucher

drm/amd/display: phase2 enable mst hdcp multiple displays

2023-01-17T20:41:19Z

[why] For MST topology with 1 physical link and multiple connectors (>=2), e.g. daisy cahined MST + SST, or 1-to-multi MST hub, if userspace set to enable the HDCP simultaneously on all connected outputs, the commit tail iteratively call the hdcp_update_display() for each display (connector). However, the hdcp workqueue data structure for each link has only one DM connector and encryption status members, which means the work queue of property_validate/update() would only be triggered for the last connector within this physical link, and therefore the HDCP property value of other connectors would stay on DESIRED instead of switching to ENABLED, which is NOT as expected. [how] Use array of AMDGPU_DM_MAX_DISPLAY_INDEX for both aconnector and encryption status in hdcp workqueue data structure for each physical link. For property validate/update work queue, we iterates over the array and do similar operation/check for each connected display. Tested-by: Daniel Wheeler Signed-off-by: hersen wu Signed-off-by: Alex Deucher

drm/amd/display: Fix HDCP 1.X 1A-04 failing

2022-10-27T18:43:39Z

[Why] On some linux based OS, the hotplug->HDCP start takes longer than 4seconds (by ~100ms) This is due to the HDCP delay (3 sec) so we only have 1 second to hotplug->stream enablement, which is not enough for certain OS configs. [How] Change the Delay to 0 seconds. From testing it seems like 0 Seconds can pass 1.x and 2.x compliances Tested-by: Mark Broadworth Reviewed-by: Aurabindo Pillai Acked-by: Rodrigo Siqueira Signed-off-by: Bhawanpreet Lakha Signed-off-by: Alex Deucher

drm/amd/display: Reboot while unplug hdcp enabled dp from mst hub

2022-07-25T21:15:50Z

[Why] event_property_update does not check NULL pointer [How] check aconnector->base.state equals NULL Reviewed-by: Bhawanpreet Lakha Acked-by: Alex Hung Signed-off-by: hersen wu Tested-by: Daniel Wheeler Signed-off-by: Alex Deucher

drm/amd/display: Enable DCN314 in DM

2022-07-14T00:57:05Z

Add support for DCN 3.1.4 in Display Manager Signed-off-by: Roman Li Signed-off-by: Alex Deucher