diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_hdcp.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_hdcp.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c index 8ea66a2e1b09..7dbc9f0bb24f 100644 --- a/drivers/gpu/drm/i915/display/intel_hdcp.c +++ b/drivers/gpu/drm/i915/display/intel_hdcp.c @@ -30,8 +30,30 @@ static int intel_conn_to_vcpi(struct intel_connector *connector) { + struct drm_dp_mst_topology_mgr *mgr; + struct drm_dp_mst_atomic_payload *payload; + struct drm_dp_mst_topology_state *mst_state; + int vcpi = 0; + /* For HDMI this is forced to be 0x0. For DP SST also this is 0x0. */ - return connector->port ? connector->port->vcpi.vcpi : 0; + if (!connector->port) + return 0; + mgr = connector->port->mgr; + + drm_modeset_lock(&mgr->base.lock, NULL); + mst_state = to_drm_dp_mst_topology_state(mgr->base.state); + payload = drm_atomic_get_mst_payload_state(mst_state, connector->port); + if (drm_WARN_ON(mgr->dev, !payload)) + goto out; + + vcpi = payload->vcpi; + if (drm_WARN_ON(mgr->dev, vcpi < 0)) { + vcpi = 0; + goto out; + } +out: + drm_modeset_unlock(&mgr->base.lock); + return vcpi; } /* |