slot_enable
u8 slot_enable; /* 0x01 */
SLOT_ENABLE = offsetof(struct ctrl_reg, slot_enable),
u8 slot_enable;
slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE);
slot_enable &= ~(0x01 << slot);
writeb(slot_enable, ctrl->hpc_reg + SLOT_ENABLE);
u8 slot_enable;
slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE);
slot_enable |= (0x01 << slot);
writeb(slot_enable, ctrl->hpc_reg + SLOT_ENABLE);
u8 slot_enable;
slot_enable = readb(ctrl->hpc_reg + SLOT_ENABLE);
slot_enable &= (0x01 << slot);
return slot_enable ? 1 : 0;
slot_enable(ctrl, hp_slot);
slot_enable(ctrl, hp_slot);