DC_STATE_EN_DC9
mask = DC_STATE_EN_DC9;
if (!(dev_priv->csr.allowed_dc_mask & DC_STATE_EN_DC9) &&
WARN_ONCE((I915_READ(DC_STATE_EN) & DC_STATE_EN_DC9),
mask |= DC_STATE_EN_DC9;
gen9_set_dc_state(dev_priv, DC_STATE_EN_DC9);