VLV_GTLC_PW_STATUS
return wait_for((I915_READ_NOTRACE(VLV_GTLC_PW_STATUS) & mask) == val,
if (!(I915_READ(VLV_GTLC_PW_STATUS) & VLV_GTLC_ALLOWWAKEERR))
I915_WRITE(VLV_GTLC_PW_STATUS, VLV_GTLC_ALLOWWAKEERR);