DC_STATE_EN_UPTO_DC6
mask |= DC_STATE_EN_UPTO_DC6;
mask |= DC_STATE_EN_UPTO_DC6;
WARN_ONCE((I915_READ(DC_STATE_EN) & DC_STATE_EN_UPTO_DC6),
gen9_set_dc_state(dev_priv, DC_STATE_EN_UPTO_DC6);
if (dev_priv->csr.allowed_dc_mask & DC_STATE_EN_UPTO_DC6)