Pali Rohár <pali.rohar@xxxxxxxxx> writes: > On Wednesday 25 May 2016 14:32:28 Ben Gamari wrote: >> >> The first attached patch gets me partly there; I see multitouch events, >> the pressure appears to reflect reality, and things generally work as >> expected. That is, until I try to touch the touchstick, which causes the >> pointer to jump around wildly. > > So with first patch touchpad starts working fine and just trackstick > cause problems? > > Reason for non working trackstick is simple. Driver alps.c does not > support trackstick in V8 protocol. So you even does not see second > (trackstick) input device, right? > Correct. >> The second attached patch makes things behave slightly better, > > Looking at the alps.c code it should act exactly same. V8 does not > support trackpoint, so ALPS_DUALPOINT has no effect. There should not be > any difference between your first and second patch. Can you play more > and confirm it? > Ahh, so you are right. I apparently misread the code. >> but the touchstick still does not work as expected. Settting >> ALPS_PS2_INTERLEAVED as well doesn't appear to change anything. > > ALPS_PS2_INTERLEAVED is just for V2 protocol. It does not have any > effect for other protocols. > Good to know. It would be nice if there were a comment indicating this in alps.c. >> Ideas? > > I think now we just need description of trackstick format for V8 > protocol. And then implement it in alps V8 parser. > Lovely. I'd be happy to carry out the implementation if protocol documentation is available. Cheers, - Ben
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