Trackpad Support Request: Lenovo Y50-70

[Vladimir Kondratyev]

On 2015-09-11 16:37, Shawn Webb wrote:
> On Friday, 11 September 2015 11:40:11 AM Vladimir Kondratyev wrote:
>> On 2015-09-11 04:40, Shawn Webb wrote:
>> > Hey All,
>> >
>> > I've got a Lenovo Y50-70, the non-touchscreen version. The trackpad is
>> > semi-
>> > supported: I can move the mouse curser and do single-finger
>> > tap-to-click. Two-
>> > finger scrolling and two-finger tap for right-click doesn't work.
>> 
>> Hi Shawn
>> 
>> Its possible that Lenovo Y50-70 has unsupported elan touchpad:
>> http://marc.info/?l=linux-input&m=141646703528043&w=2 so you can try
>> patch from my yesterday mail to freebsd-mobile maillist
> 
> Hey Vladimir,
> 
> Awesome! Thanks for the prompt reply and the patch! You mentioned in 
> your
> email yesterday that PS/2 emulation mode is giving you headaches.

> Would it be possible to have the driver act like Synaptics touchpads? 
> Maybe provide some
> sort of driver shim to convert between Synaptics APIs and Elantech 
> APIs?

It should act exactly like synaptics as it shares common gesture 
processing code with synaptics kernel driver. Differences are 
initialization and fingers position extraction code (and bugs). But it 
is true if and only if it is used with moused and sysmouse protocol. 
x11-drivers/xf86-input-synaptics port definitely should not work as it 
disables kernel PS/2 protocol processing and use its own routines for 
decoding touchpad events.

> Granted, all of this may be moot and not even possible. I have no clue 
> how
> touchpad drivers work under-the-hoods, so my newbishness is most likely
> showing. ;)
> 
> Thanks,