HDCP_KEY_STATUS
ret = __intel_wait_for_register(dev_priv, HDCP_KEY_STATUS,
I915_WRITE(HDCP_KEY_STATUS, HDCP_KEY_LOAD_DONE | HDCP_KEY_LOAD_STATUS |
val = I915_READ(HDCP_KEY_STATUS);
if (!(I915_READ(HDCP_KEY_STATUS) & HDCP_KEY_LOAD_DONE))