On Wed, Jun 27, 2018 at 11:08:58AM +1000, Peter Hutterer wrote: > On Thu, Jun 21, 2018 at 02:09:06PM +0200, Benjamin Tissoires wrote: > > From: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> > > > > According to Microsoft specification [1] for Precision Touchpads (and > > Touchscreens) the devices use "confidence" reports to signal accidental > > touches, or contacts that are "too large to be a finger". Instead of > > simply marking contact inactive in this case (which causes issues if > > contact was originally proper and we lost confidence in it later, as > > this results in accidental clicks, drags, etc), let's report such > > contacts as MT_TOOL_PALM and let userspace decide what to do. > > Additionally, let's report contact size for such touches as maximum > > allowed for major/minor, which should help userspace that is not yet > > aware of MT_TOOL_PALM to still perform palm rejection. > > tbh. I have a queasy feeling about this last bit. MT_TOOL_PALM has shown to > not be reliable on some devices (X1 Carbon 6th) and we mask it out on those. > Changing the major/minor means it's impossible to rely on the touch size for > palm detection once a device supports MT_TOOL_PALM. OK, then let's drop this bit. Thanks. -- Dmitry -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
