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| author | Hans de Goede <hdegoede@redhat.com> | 2015-04-04 02:30:31 +0200 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-04-05 20:48:35 +0200 |
| commit | 58d8a3be36cf0fe2eb2609e205bb07a141c29a7c (patch) | |
| tree | 0a836c543704c5c2246556fc4ef3e13058a8a7da /Documentation/input/alps.txt | |
| parent | Input: alps - report V2 Dualpoint Stick events via the right evdev node (diff) | |
| download | linux-58d8a3be36cf0fe2eb2609e205bb07a141c29a7c.tar.xz linux-58d8a3be36cf0fe2eb2609e205bb07a141c29a7c.zip | |
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: Hans de Goede <hdegoede@redhat.com>
Acked-By: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation/input/alps.txt')
| -rw-r--r-- | Documentation/input/alps.txt | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/input/alps.txt b/Documentation/input/alps.txt index a63e5e013a8c..92ae734c00c3 100644 --- a/Documentation/input/alps.txt +++ b/Documentation/input/alps.txt @@ -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 --------------------------------------- |