Hi Dmitry and Henrik- Regarding SEMI_MT vs. "simulated multitouch" . . . > > > > Patch #4 (new) reintroduces simulated multitouch for up to 5 fingers > > (#if CYPRESS_SIMULATE_MT), disabling SEMI_MT again. > > > > If that functionality (support for >2 fingers) can be acheived in some > > better way, please advise. On Sun, 2012-12-02 at 23:36 -0800, Dmitry Torokhov wrote: > You can still report true number of fingers on the pad via BTN_TOOL_*TAP > while reporting the bounding box, the same way as Synaptics, Elantech, > ALPS and Sentelic drivers are doing it. On Mon, 2012-12-03 at 08:45 +0100, Henrik Rydberg wrote: > + ret = input_mt_init_slots(input, CYTP_MAX_MT_SLOTS, > + INPUT_MT_POINTER|INPUT_MT_DROP_UNUSED|INPUT_MT_TRACK); > > Here, INPUT_MT_POINTER needs to be dropped; for semi-mt devices, the > number of fingers is propagated separately using > > input_mt_report_finger_count(dev, finger_count_as_reported_by_the_device), > > which conflicts with automatic handling of pointer logic. Well... The forthcoming PATCH v4 version now implements all that ^^ as you requested, but it appears that my desktop (X with Unity desktop in Ubuntu 12.10) does not actually respond to input_mt_report_finger_count events (e.g. BTN_TOOL_TRIPLETAP). I asked a colleague test a couple of other semi-mt touchpads (Synaptics and ALPS) and we found the same result: The desktop doesn't see >2 finger events with any of these semi-mt devices, even though 'input-events' does show that the BTN_TOOL_*TAP events are in the input stream. (Do other X desktops actually support BTN_TOOL_*TAP?) I understand that this may be "a userspace problem", but from my perspective the "simulated multitouch" patch is still necessary for >2 finger tap/drag. I have left it in my PATCH v4 set for that reason (patch 4/4; disabled by an ifdef). It can be included and left disabled, or enabled, or dropped as you see fit. -Kamal -- 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
