ibmphp_hpc_writeslot
int ibmphp_hpc_writeslot(struct slot *, u8);
rc = ibmphp_hpc_writeslot(slot_cur, HPC_SLOT_OFF);
retval = ibmphp_hpc_writeslot(slot_cur, cmd);
retval = ibmphp_hpc_writeslot(slot_cur, cmd);
rc = ibmphp_hpc_writeslot(pslot, cmd);
#define attn_on(sl) ibmphp_hpc_writeslot(sl, HPC_SLOT_ATTNON)
#define attn_off(sl) ibmphp_hpc_writeslot(sl, HPC_SLOT_ATTNOFF)
#define attn_LED_blink(sl) ibmphp_hpc_writeslot(sl, HPC_SLOT_BLINKLED)
ibmphp_hpc_writeslot(slot_cur,
retval = ibmphp_hpc_writeslot(slot_cur, cmd);