When repeater notifies a downstream topology change, this patch reauthenticate the repeater alone with out disabling the hdcp encryption. If that fails then complete reauthentication is executed. v2: Rebased. v3: No Changes. Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx> --- drivers/gpu/drm/i915/intel_hdcp.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_hdcp.c b/drivers/gpu/drm/i915/intel_hdcp.c index e2aec73aefe3..fd30e2b1ddc3 100644 --- a/drivers/gpu/drm/i915/intel_hdcp.c +++ b/drivers/gpu/drm/i915/intel_hdcp.c @@ -1497,8 +1497,23 @@ static int intel_hdcp2_check_link(struct intel_connector *connector) goto out; } - DRM_INFO("[%s:%d] HDCP2.2 link failed, retrying authentication\n", - connector->base.name, connector->base.base.id); + if (ret == DRM_HDCP_TOPOLOGY_CHANGE) { + if (hdcp->hdcp_value == DRM_MODE_CONTENT_PROTECTION_UNDESIRED) + goto out; + + DRM_DEBUG_KMS("HDCP2.2 Downstream topology change\n"); + ret = hdcp2_authenticate_repeater_topology(connector); + if (!ret) { + hdcp->hdcp_value = DRM_MODE_CONTENT_PROTECTION_ENABLED; + schedule_work(&hdcp->hdcp_prop_work); + goto out; + } + DRM_ERROR("[%s:%d] Repeater topology auth failed.(%d)\n", + connector->base.name, connector->base.base.id, ret); + } else { + DRM_ERROR("[%s:%d] HDCP2.2 link failed, retrying auth\n", + connector->base.name, connector->base.base.id); + } ret = _intel_hdcp2_disable(connector); if (ret) { -- 2.7.4 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel