How to enable touchscreen/pen on Thinkpad x201t?

After a bit of digging I think I can say that on this laptop the digitizer is a serial input device.
I remember that on Linux you could get the touchscreen to be connected like so:

sudo inputattach --daemon -w8001 /dev/ttyS4

Uh, I realize that Haiku is very likely to be a lot different from Linux, but yeah, I’ve tried looking at /dev/ and found that my /dev/ports directory is empty (where the serial/parralel ports could be, I guessed). /dev/tt directory has more stuff though…

/dev/tt> ls -a
.   p2  p6  pa  pe  q2  q6  qa  qe  r2  r6  ra  re  s2  s6  sa  se
..  p3  p7  pb  pf  q3  q7  qb  qf  r3  r7  rb  rf  s3  s7  sb  sf
p0  p4  p8  pc  q0  q4  q8  qc  r0  r4  r8  rc  s0  s4  s8  sc
p1  p5  p9  pd  q1  q5  q9  qd  r1  r5  r9  rd  s1  s5  s9  sd

p0 can only be written to by group, and everything else can only be read by group.
owner can r/w all of these files.

I thought I could’ve tried to somehow read something from the serial port…
SerialConnect app has no serial ports available, and i’m not sure where to go next.

I thought that it could’ve been made so that the serial device was pointed to the right driver and it all would magically work lol. But it seems that serial devices need to have different drivers for them. (Found this thread: Serial mouse driver)
So It seems this means that while there’s no support for my device, nothing can be done except waiting for a driver to be ported or written for Haiku?