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path: root/Documentation/input/multi-touch-protocol.txt
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* Input: mt - document devices reporting more touches than slotsDaniel Kurtz2011-08-231-0/+14
| | | | | | | | | | | Some devices are capable of identifying and/or tracking more contacts than they can report to the driver. Document how a driver should handle this, and what userspace should expect. Signed-off-by: Daniel Kurtz <djkurtz@chromium.org> Acked-by: Chase Douglas <chase.douglas@canonical.com> Acked-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* input: mt: Document interface updatesHenrik Rydberg2010-12-201-18/+26
| | | | | | This patch documents the recent input-mt interface changes. Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
* input: mt: Add hovering distance axisHenrik Rydberg2010-12-161-1/+8
| | | | | | | | | | Touch devices capable of hovering, i.e., fingers detected a distance from the surface, are not supported by the current input MT protocol. This patch adds ABS_MT_DISTANCE, which may be used to indicate the distance between the contact and the surface. Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
* Input: document the MT event slot protocolHenrik Rydberg2010-07-151-69/+149
| | | | | | | | | This patch adds documentation for the ABS_MT_SLOT event and gives examples of how to use the event slot protocol. Reviewed-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: update the status of the Multitouch X driver projectHenrik Rydberg2010-03-211-6/+1
| | | | | | | | The Multitouch X driver project has moved to alpha status. This patch updates the documentation accordingly. Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: clarify the no-finger event in multitouch protocolHenrik Rydberg2010-03-211-0/+16
| | | | | | | | | | The current documentation does not explicitly specify how to report zero fingers, leaving a potential problem in the driver implementations and giving no parsing directive to userland. This patch defines two equally valid ways. Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: update multi-touch protocol documentationHenrik Rydberg2010-01-281-8/+40
| | | | | | | | | | | This patch documents a new ABS_MT parameter and adds further text to clarify some points around the MT protocol. Requested-by: Yoonyoung Shim <jy0922.shim@samsung.com> Requested-by: Mika Kuoppala <mika.kuoppala@nokia.com> Requested-by: Peter Hutterer <peter.hutterer@who-t.net> Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: multitouch - augment event semantics documentationHenrik Rydberg2009-05-231-24/+79
| | | | | | | | | | Through the collaboration to adapt the N-trig and Stantum HID drivers to the MT protocol, some semantic clarifications to the protocol have been made. This patch adds them to the MT documentation. Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Tested-by: Stéphane Chatty <chatty@enac.fr> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
* Input: document the multi-touch (MT) protocolHenrik Rydberg2009-04-301-0/+140
This patchs adds documentation for the multi-touch protocol to Documentation/input/. [randy.dunlap@oracle.com: grammar fixes] Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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