drm/i915/hdcp: HDCP2.2 MST Link failure recovery

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DP MST Link Check performed only for the connector involved with
HDCP port authentication and encryption, for other connector it
simply returns link check with true and update the uevent.
Therefore in case of HDCP 2.2 link failure, disable HDCP encryption
and de-authenticate the port so next time it can enable port
authentication and encryption.

Cc: Ramalingam C <ramalingam.c@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210319100208.5886-2-anshuman.gupta@intel.com

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Anshuman Gupta 2021-03-19 15:32:06 +05:30

parent 50e945cbaa

commit ee912b5565

1 changed files with 6 additions and 4 deletions

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drivers/gpu/drm/i915/display/intel_hdcp.c

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