HB_SLOW_DOWN
if ((direction) == HB_SLOW_DOWN && \
CHANGE_REFRESH_COUNT(HB_SLOW_DOWN, cur_divisor, new_divisor);
CHANGE_REFRESH_COUNT(HB_SLOW_DOWN, cur_divisor, HB_HALF_DIV);
CHANGE_REFRESH_COUNT(HB_SLOW_DOWN, HB_HALF_DIV, new_divisor);
CHANGE_REFRESH_COUNT(HB_SLOW_DOWN, cur_divisor, new_divisor);