Re: ALPS v7 trackpad passthrough to Thinkpad trackpoint

On Fri, Aug 7, 2015 at 9:26 AM, Pali Rohár [off-list ref] wrote:

Hello,

ALPS devices does not support pass-throw mode like Synaptics devices.

Hmm... Then what are all of these references to passthrough in alps.c?
Does the alps driver use the term "passthrough" in a different way
than the synaptics driver does?

Are we 100% sure that alps devices can't do this? Is there any
possibility that we just don't know how to do it?

Thanks.

Ari

But our ALPS driver is good and can detect packet from device contains
data for touchpad or trackpoint. So ALPS driver create two input devices
and send events to userspace via correct input device and userspace see
that there are two different devices (touchpad and trackstick) and not
one "combined".

Looks like that ALPS devices does not support any speed or acceleration
configuration, so everything needs to be implemented in software -- in
userspace. X drivers already have such configuration ether via xorg.conf
or runtime via xinput. Speed or acceleration can be configured per input
device, so this is something which you probably want.

--
Pali Rohár
pali.rohar@gmail.com

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