IPS_ENABLE
crtc_state->ips_enabled = intel_de_read(display, IPS_CTL) & IPS_ENABLE;
val = IPS_ENABLE;
if (intel_de_read(display, IPS_CTL) & IPS_ENABLE)
if (intel_de_wait_for_set(display, IPS_CTL, IPS_ENABLE, 50))
if (intel_de_wait_for_clear(display, IPS_CTL, IPS_ENABLE, 100))