On Tue, 7 Nov 2017, Jason Gerecke wrote: > The Wacom Pro Pen 3D includes a third barrel switch which is intended to > be particularly useful in applications where one frequency uses pan, zoom, > and rotate to navigate around a scene or model. The pen is compatible with > the MobileStudio Pro, 2nd-gen Intuos Pro, and Cintiq Pro. When the third > button is pressed, these devices set both the HID_DG_BARRELSWITCH and > HID_DG_BARRELSWITCH2 usages since their HID descriptors do not include a > usage specific to the button. > > Rather than send both BTN_STYLUS and BTN_STYLUS2 when the third button is > pressed, userspace (libinput) has requested that we detect this condition > and report a newly-defined BTN_STYLUS3 event instead. We could define a > quirk specific to devices compatible with the Pro Pen 3D, but the liklihood > of seeing both barrel switch bits set with other pens/devices is low enough > to not worry about (pens mechanically prevent accidental activation of > multiple switches). > > Signed-off-by: Jason Gerecke <jason.gerecke@xxxxxxxxx> > Acked-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> > Acked-by: Peter Hutterer <peter.hutterer@xxxxxxxxx> > Acked-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx> Applied to for-4.15/wacom. -- Jiri Kosina SUSE Labs -- 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
