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| author | Hans de Goede <hdegoede@redhat.com> | 2015-04-15 10:48:32 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-04-15 10:52:49 -0700 |
| commit | 2310568f570e0f95bfb1cc79ff7db617e782e25c (patch) | |
| tree | aa38c517231b0ec4a69cb1995ea3f1f3d2cc7354 /Documentation/input | |
| parent | 4f8d808889d05807f494f82f8cfaa6c113c2f761 (diff) | |
| download | linux-2310568f570e0f95bfb1cc79ff7db617e782e25c.tar.gz linux-2310568f570e0f95bfb1cc79ff7db617e782e25c.tar.bz2 linux-2310568f570e0f95bfb1cc79ff7db617e782e25c.zip | |
Input: alps - document separate pointstick button bits for V2 devices
Non interleaved dualpoint v2 devices have separate pointstick button bits,
document this.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation/input')
| -rw-r--r-- | Documentation/input/alps.txt | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/Documentation/input/alps.txt b/Documentation/input/alps.txt index 92ae734c00c3..e301887d8523 100644 --- a/Documentation/input/alps.txt +++ b/Documentation/input/alps.txt @@ -94,6 +94,10 @@ PS/2 packet format Note that the device never signals overflow condition. +For protocol version 2 devices when the trackpoint is used, and no fingers +are on the touchpad, the M R L bits signal the combined status of both the +pointingstick and touchpad buttons. + ALPS Absolute Mode - Protocol Version 1 -------------------------------------- @@ -107,7 +111,7 @@ ALPS Absolute Mode - Protocol Version 1 ALPS Absolute Mode - Protocol Version 2 --------------------------------------- - byte 0: 1 ? ? ? 1 ? ? ? + byte 0: 1 ? ? ? 1 PSM PSR PSL byte 1: 0 x6 x5 x4 x3 x2 x1 x0 byte 2: 0 x10 x9 x8 x7 ? fin ges byte 3: 0 y9 y8 y7 1 M R L @@ -115,7 +119,8 @@ ALPS Absolute Mode - Protocol Version 2 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. +the DualPoint Stick. For non interleaved dualpoint devices the pointingstick +buttons get reported separately in the PSM, PSR and PSL bits. Dualpoint device -- interleaved packet format --------------------------------------------- |