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drm/i915/hdcp: Fail Repeater authentication if Type1 device not present

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Fail repeater authentication step in case RX_INFO indicates
HDCP1.x or HDCP2.0/2.1 device is present downstream in repeater
topology and content type set by userspace is Type1.

--v2
-Fix build error.

--v3
-remove mst encoder check as branch device also act as repeater

Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231215050915.2070119-1-suraj.kandpal@intel.com
This commit is contained in:
Suraj Kandpal
2023-12-15 10:39:16 +05:30
committed by Ankit Nautiyal
parent 89d6708d94
commit da2d668480
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/i915/display/intel_hdcp.c
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@@ -1633,6 +1633,12 @@ int hdcp2_authenticate_repeater_topology(struct intel_connector *connector)
!HDCP_2_2_HDCP1_DEVICE_CONNECTED(rx_info[1]) &&
!HDCP_2_2_HDCP_2_0_REP_CONNECTED(rx_info[1]);
if (!dig_port->hdcp_mst_type1_capable && hdcp->content_type) {
drm_dbg_kms(&i915->drm,
"HDCP1.x or 2.0 Legacy Device Downstream\n");
return -EINVAL;
}
/* Converting and Storing the seq_num_v to local variable as DWORD */
seq_num_v =
drm_hdcp_be24_to_cpu((const u8 *)msgs.recvid_list.seq_num_v);