Messages in this thread | | | Date | Tue, 30 Sep 2003 22:51:54 +0200 | From | Hans-Georg Thien <> | Subject | [PORT to 2.6.x] "Disable Trackpad while typing" on Notebooks with a PS/2 Trackpad |
| |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
I have written a patch against the linux 2.4.x kernel and I want to port it to the 2.6.x Kernel now.
What it is - ---------- The trackpad on the MacIntosh iBook notebooks have a feature that prevents unintended trackpad input while typing on the keyboard. There are no mouse-moves or mouse-taps for a short period of time after each keystroke.
I thougt that was a nice-to-have for my i386 notebook and have implemented it ( with some very important help of other people, namely Torsten Foertsch ).
This feature is fully configurable via a proc entry.
How it currently works - ----------------------
In the 2.4.x kernel the handling of keyboard and PS/2 mouse where both done in linux/drivers/char/pc_keyb.c. So it was easy to apply a patch without touching other files.
It simply stores a timestamp whenever a key event occurs. If a mouse event occurs it compares the timestamp of the mouse event with stored timestamp of the key event. If the delta of these timestamps is less than a treshold value, than this mouse event is simply discarded. There where some things more to consider about, but I think you have the idea.
Where I need help now - --------------------- Since I do not want to touch the keyboard driver, I wonder if there is better way to get the timestamp when the last keyboard event occured?
Maybe a function call, a callback function where I can register to the be notified when a event occurs, a global accessible variable, a proc entry or something like that.
Any ideas ?
- - Hans
-----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (MingW32)
iD8DBQE/eezq2xSpXPjN/jsRAgyAAJ9djvaiYsgiR4pOf4GRJ2xNKCUa5QCdFreB 4/iOjaoS+3XX0dL8DFGEaJk= =zh+9 -----END PGP SIGNATURE-----
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |