Messages in this thread | | | Date | Mon, 11 Oct 2010 09:28:10 +0200 | From | Takashi Iwai <> | Subject | Re: [PATCH 0/3] Input: synaptics - multitouch and multifinger support |
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At Sun, 10 Oct 2010 13:59:32 -0700, Dmitry Torokhov wrote: > > On Sun, Oct 10, 2010 at 09:49:45AM +0200, Henrik Rydberg wrote: > > Takashi, Chase, > > > > talk about Heinz effect. :-) > > > > Rather than taking any of the patches, I was wondering if we could get a single > > patch including all the later findings and considerations on what devices should > > have the multitouch mode. Also, unless there is a really really good reason for > > it, without kernel parameters. After all, these patches should only add new > > functionality without regressions. > > Yes, I think we should limit number of module options (and even more so > Kconfig options). I believe that either MT support is ready for prime-time > and then it should be enabled unconditionally, or it is not ready and > should be kept as patches. his also means that we should not introduce > regressions in ST (even when emulated in MT mode).
Right, but it's pretty hard to know whether it works really for all machines, simply because the current MT-detection is nothing but a pure guess work. As mentioned in another mail, there are devices that have no this bit but reports multi-finger detections without tracking. So, there are definitely other things to be checked.
Thus, I'm inclined to add a module option, at least, for *disabling* MT for non-working machines. Also, another question is whether it's safe to enable MT even for user-space that don't understand MT.
Takashi
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