imx1_read_bit
imx1_read_bit(ipctl, offset, MX1_GIUS),
imx1_read_bit(ipctl, offset, MX1_GPR),
imx1_read_bit(ipctl, offset, MX1_DDIR),
*config = imx1_read_bit(ipctl, pin_id, MX1_PUEN);