linux-kernel - Touchscreen hardware hacking/driver hacking.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <E8C008223DD5F64485DFBDF6D4B7F71D020C5E83@msgswbmnmsp25.wellsfargo.com>
Date:	Tue, 17 Oct 2006 15:30:43 -0500
From:	<Greg.Chandler@...lsfargo.com>
To:	<linux-kernel@...r.kernel.org>
Subject: Touchscreen hardware hacking/driver hacking.

I'm working on a prototype Hitachi tablet, it uses a Fujitsu 4-wire
resistive touchscreen. {10.4" I think}
I've found that windows-xp embedded uses a generic ps/2 driver for the
device.

I've ripped this thing to pieces on several occasions looking for chips
to help the porting, my problem is that I can not find the
analog-digital converter for this thing.  The connector goes to a
surface mount header on an 8 layer board.
I loose the traces almost instantly.  Given that I can't find the
converter anywhere what should I do next?

I've done my homework and found that this HAS to be either serial or usb
attached according to Fujitsu.
Aparently it's neither.  There are no unknown USB devices {or known
matching}, and there is no activity on the single serial port on the
system.  Since the windows driver uses PS/2 as the interface I have a
horrible feeling this thing has an interpretation layer that makes it a
PS/2 mouse, and that may or may not royally be a nightmare.

I would have posted this to a different group but there is no "input"
mailing list.

Help?

I'll give a reward to anyone willing to actually help me get this hacked
out.
Reward defined:
  Permanent shell access to my personal development envirnoment for
testing kernel code.
  Equipment in the environment: ARM, Alpha, x86-32, MIPS/Origin, HPPA,
SPARC, PPC

--Greg Chandler
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/