libnvme(9) API Manual libnvme(9) NAME enum nvme_apst_entry - Autonomous Power State Transition SYNOPSIS enum nvme_apst_entry { NVME_APST_ENTRY_ITPS_SHIFT , NVME_APST_ENTRY_ITPT_SHIFT , NVME_APST_ENTRY_ITPS_MASK , NVME_APST_ENTRY_ITPT_MASK }; Constants NVME_APST_ENTRY_ITPS_SHIFT Idle Transition Power State Shift NVME_APST_ENTRY_ITPT_SHIFT Idle Time Prior to Transition Shift NVME_APST_ENTRY_ITPS_MASK Idle Transition Power State Mask NVME_APST_ENTRY_ITPT_MASK Idle Time Prior to Transition Mask October 2026 enum nvme_apst_entry libnvme(9)