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authorIngo Molnar <mingo@kernel.org>2015-05-11 16:05:09 +0200
committerIngo Molnar <mingo@kernel.org>2015-05-11 16:05:09 +0200
commit191a66353b22fad8ac89404ab4c929cbe7b0afb2 (patch)
treebd7affc4bc640eb42e5ff3285922497285f8fdd7 /Documentation/input/alps.txt
parentx86/smpboot: Skip delays during SMP initialization similar to Xen (diff)
parentx86/alternatives: Switch AMD F15h and later to the P6 NOPs (diff)
downloadlinux-191a66353b22fad8ac89404ab4c929cbe7b0afb2.tar.xz
linux-191a66353b22fad8ac89404ab4c929cbe7b0afb2.zip
Merge branch 'x86/asm' into x86/apic, to resolve a conflict
Conflicts: arch/x86/kernel/apic/io_apic.c arch/x86/kernel/apic/vector.c Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation/input/alps.txt')
-rw-r--r--Documentation/input/alps.txt9
1 files changed, 7 insertions, 2 deletions
diff --git a/Documentation/input/alps.txt b/Documentation/input/alps.txt
index b9d229fee6b9..c86f2f1ae4f6 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
---------------------------------------------