When topology changes before beginning a new HDCP authentication by
sending AKE_init message we need to first authenticate only the
repeater if that fails only then makes sense to enable a new HDCP
authentication. Even though it made sense to not enable HDCP directly
from check_link and schedule it repeater authentication needs to be
done immidieatly
Fixes: 47ef55a8b784 ("drm/i915/hdcp: Don't enable HDCP2.2 directly from check_link")
Signed-off-by: Suraj Kandpal <suraj.kandpal@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_hdcp.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
index f6e68a0e3b6d..9ff2274ed7e7 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -2182,6 +2182,19 @@ static int intel_hdcp2_check_link(struct intel_connector *connector)
drm_dbg_kms(display->drm,
"HDCP2.2 Downstream topology change\n");
+
+ ret = hdcp2_authenticate_repeater_topology(connector);
+ if (!ret) {
+ intel_hdcp_update_value(connector,
+ DRM_MODE_CONTENT_PROTECTION_ENABLED,
+ true);
+ goto out;
+ }
+
+ drm_dbg_kms(display->drm,
+ "[CONNECTOR:%d:%s] Repeater topology auth failed.(%d)\n",
+ connector->base.base.id, connector->base.name,
+ ret);
} else {
drm_dbg_kms(display->drm,
"[CONNECTOR:%d:%s] HDCP2.2 link failed, retrying auth\n",
--
2.34.1
