CHV_PADCTRL0_INTSEL_MASK
intr_line &= CHV_PADCTRL0_INTSEL_MASK;
intr_line &= CHV_PADCTRL0_INTSEL_MASK;
intsel &= CHV_PADCTRL0_INTSEL_MASK;
intsel = (value & CHV_PADCTRL0_INTSEL_MASK) >> CHV_PADCTRL0_INTSEL_SHIFT;
value = (value & ~CHV_PADCTRL0_INTSEL_MASK) | (i << CHV_PADCTRL0_INTSEL_SHIFT);
intsel &= CHV_PADCTRL0_INTSEL_MASK;