Commit 6c6d5752 authored by Dmitry Torokhov's avatar Dmitry Torokhov
Browse files

Input: docs - note that MT-A protocol is obsolete

Everyone should be using multitouch protocol B (slotted) now.
Signed-off-by: default avatarDmitry Torokhov <>
parent 4c79e98b
......@@ -22,6 +22,9 @@ describes how to send the raw data for all contacts to the receiver. For
devices capable of tracking identifiable contacts (type B), the protocol
describes how to send updates for individual contacts via event slots.
.. note::
MT potocol type A is obsolete, all kernel drivers have been
converted to use type B.
Protocol Usage
......@@ -400,9 +403,6 @@ in a finger packet must not be recognized as single-touch events.
For type A devices, all finger data bypasses input filtering, since
subsequent events of the same type refer to different fingers.
For example usage of the type A protocol, see the bcm5974 driver. For
example usage of the type B protocol, see the hid-egalax driver.
.. [#f1] Also, the difference (TOOL_X - POSITION_X) can be used to model tilt.
.. [#f2] The list can of course be extended.
.. [#f3] The mtdev project:
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment