PADS_PU_PD_MASK
arg = (val & PADS_PU_PD_MASK) == PADS_PU_PD_HIGHZ;
arg = (val & PADS_PU_PD_MASK) == PADS_PU_PD_UP;
arg = (val & PADS_PU_PD_MASK) == PADS_PU_PD_DOWN;
arg = (val & PADS_PU_PD_MASK) == PADS_PU_PD_BUS;
val &= ~(PADS_PU_PD_MASK << PADS_PU_PD_SHIFT(pin));
val &= ~(PADS_PU_PD_MASK << PADS_PU_PD_SHIFT(pin));
val &= ~(PADS_PU_PD_MASK << PADS_PU_PD_SHIFT(pin));
val &= ~(PADS_PU_PD_MASK << PADS_PU_PD_SHIFT(pin));