input/devices/alps.rst

2 ALPS Touchpad Protocol
7 Currently the ALPS touchpad driver supports seven protocol versions in use by
8 ALPS touchpads, called versions 1, 2, 3, 4, 5, 6, 7 and 8.
10 Since roughly mid-2010 several new ALPS touchpads have been released and
18 "Pinnacle", and "Dolphin", which you will see in the alps.c code.
19 For the purposes of this document, this group of ALPS touchpads will
20 generically be called "new ALPS touchpads".
24 different ALPS variants but there did not appear to be a 1:1 mapping.
31 All ALPS touchpads should respond to the "E6 report" command sequence:
32 E8-E6-E6-E6-E9. An ALPS touchpad should respond with either 00-00-0A or
45 The new ALPS touchpads have an E7 signature of 73-03-50 or 73-03-0A but
71 For the new ALPS touchpads, the EC command is used to enter command
72 mode. The response in the new ALPS touchpads is significantly different,
104 ALPS Absolute Mode - Protocol Version 1
116 ALPS Absolute Mode - Protocol Version 2
150 packets for the DualPoint Stick + ALPS Absolute Mode packets for the
154 ALPS Absolute Mode - Protocol Version 3
157 ALPS protocol version 3 has three different packet formats. The first two are
202 ALPS Absolute Mode - Protocol Version 4
246 ALPS Absolute Mode - Protocol Version 5
271 ALPS Absolute Mode - Protocol Version 6
294 ALPS Absolute Mode - Protocol Version 7
336 ALPS Absolute Mode - Protocol Version 8