drm/amd/display: Fix unstable HPCP compliance on Chrome Barcelo

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[Why]
Intermittently, there presents two occurrences of 0 stream
commits in a single HPD event. Current HDCP sequence does
not consider such scenerio, and will thus disable HDCP.

[How]
Add condition check to include stream remove and re-enable
case for HDCP enable.

Reviewed-by: Bhawanpreet Lakha <bhawanpreet.lakha@amd.com>
Acked-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

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Qingqing Zhuo 2021-08-27 06:58:38 -04:00 • committed by Alex Deucher

parent 68e1634d5f

commit 0d9a947b5c

1 changed files with 20 additions and 2 deletions

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

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