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Commit 58d8a3be authored by Hans de Goede's avatar Hans de Goede Committed by Dmitry Torokhov
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Input: alps - document stick behavior for protocol V2 



Document that protocol V2 uses standard (bare) PS/2 mouse packets for the
DualPoint stick.

Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Acked-By: default avatarPali Rohár <pali.rohar@gmail.com>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent e3a79212

Documentation/input/alps.txt

+8 −0
Original line number Diff line number Diff line
@@ -114,6 +114,9 @@ ALPS Absolute Mode - Protocol Version 2 
 byte 4:  0   y6   y5   y4   y3   y2   y1   y0

 byte 5:  0   z6   z5   z4   z3   z2   z1   z0



Protocol Version 2 DualPoint devices send standard PS/2 mouse packets for

the DualPoint Stick.



Dualpoint device -- interleaved packet format

---------------------------------------------
@@ -127,6 +130,11 @@ Dualpoint device -- interleaved packet format 
 byte 7:    0   y6   y5   y4   y3   y2   y1   y0

 byte 8:    0   z6   z5   z4   z3   z2   z1   z0



Devices which use the interleaving format normally send standard PS/2 mouse

packets for the DualPoint Stick + ALPS Absolute Mode packets for the

touchpad, switching to the interleaved packet format when both the stick and

the touchpad are used at the same time.



ALPS Absolute Mode - Protocol Version 3

---------------------------------------