drm/i915/hdcp: mst streams type1 capability check

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It requires to check streams type1 capability in mst topology
by checking Rxinfo instead connector HDCP2.x capability in
order to enforce type0 stream encryption in a mix of
HDCP {1.x,2.x} mst topology.
Rxcaps always shows HDCP 2.x capability of immediate downstream
connector. Let's use Rxinfo HDCP1_DEVICE_DOWNSTREAM bit to
detect a HDCP {1.x,2.x} mix mst topology.

Cc: Sean Paul <seanpaul@chromium.org>
Cc: Ramalingam C <ramalingam.c@intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210319091732.17547-1-anshuman.gupta@intel.com

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This commit is contained in:

Anshuman Gupta 2021-03-19 14:47:32 +05:30

parent 053ffdd164

commit 50e945cbaa

3 changed files with 59 additions and 1 deletions

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4

drivers/gpu/drm/i915/display/intel_display_types.h

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39

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

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17

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

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