Preferred way for a multitouch driver?

Preferred way for a multitouch driver?

[Florian Echtler]

Hello everyone,

I've just bought a Lenovo S10-3t convertible netbook, and now I'm 
experimenting with the "multitouch" screen (dual-touch, rather). It's 
being recognized as a HID device, and using hid-device-dump, I can nicely 
read the reports of both fingers. There's also some hacks floating around 
which use xf86-input-hidtouch, but AFAICT that doesn't do any kind of 
multitouch.

>From lurking here on the list, I've gathered that the evdev interface by 
now fully supports all kinds of multitouch events, so I guess the 
preferred way would be a hiddev-to-evdev bridge of some kind, right?

Can somebody point me into the right direction, e.g. to some other driver 
which also works that way?

Many thanks,
Florian
-- 
"_Nothing_ brightens up my morning. Coffee simply provides a shade of
grey just above the pitch-black of the infinite depths of the _abyss_."

Re: Preferred way for a multitouch driver?

[Michael Poole]

Florian Echtler writes:

> Hello everyone,
>
> I've just bought a Lenovo S10-3t convertible netbook, and now I'm
> experimenting with the "multitouch" screen (dual-touch, rather). It's
> being recognized as a HID device, and using hid-device-dump, I can
> nicely read the reports of both fingers. There's also some hacks
> floating around which use xf86-input-hidtouch, but AFAICT that doesn't
> do any kind of multitouch.
>
> From lurking here on the list, I've gathered that the evdev interface
> by now fully supports all kinds of multitouch events, so I guess the
> preferred way would be a hiddev-to-evdev bridge of some kind, right?

You don't need that -- HID drivers already generate evdev events.

> Can somebody point me into the right direction, e.g. to some other
> driver which also works that way?

You can find them by grepping for ABS_MT_ in the drivers/hid/ directory.
hid-3m-pct, hid-magicmouse, hid-mosart, hid-ntrig, hid-quanta and
hid-stratum all generate multitouch events.  Most of them use standard
HID report descriptors; however, hid-magicmouse has to translate input
reports that don't have published descriptors.  Depending on how the
screen behaves, you'll probably want to look more at the other drivers
than hid-magicmouse.

Michael Poole

Re: Preferred way for a multitouch driver?

[Rafi Rubin]

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On 04/11/10 12:41, Florian Echtler wrote:
> Hello everyone,
> 
> I've just bought a Lenovo S10-3t convertible netbook, and now I'm
> experimenting with the "multitouch" screen (dual-touch, rather). It's
> being recognized as a HID device, and using hid-device-dump, I can
> nicely read the reports of both fingers. There's also some hacks
> floating around which use xf86-input-hidtouch, but AFAICT that doesn't
> do any kind of multitouch.
> 
> From lurking here on the list, I've gathered that the evdev interface by
> now fully supports all kinds of multitouch events, so I guess the
> preferred way would be a hiddev-to-evdev bridge of some kind, right?
> 
> Can somebody point me into the right direction, e.g. to some other
> driver which also works that way?
> 
> Many thanks,
> Florian

I think Stéphane is working on that one.
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Re: Preferred way for a multitouch driver?

[Florian Echtler]

> > I've just bought a Lenovo S10-3t convertible netbook, and now I'm
> > experimenting with the "multitouch" screen (dual-touch, rather).
> > Can somebody point me into the right direction, e.g. to some other
> > driver which also works that way?
> I think Stéphane is working on that one.
Is there an alpha version around? I'd be happy to test.

Florian
-- 
0666 - Filemode of the Beast

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Re: Preferred way for a multitouch driver?

[Stéphane Chatty]

Le 11 avr. 10 à 22:09, Florian Echtler a écrit :

>>> I've just bought a Lenovo S10-3t convertible netbook, and now I'm
>>> experimenting with the "multitouch" screen (dual-touch, rather).
>>> Can somebody point me into the right direction, e.g. to some other
>>> driver which also works that way?
>> I think Stéphane is working on that one.
> Is there an alpha version around? I'd be happy to test.

Yes, there is. I was testing it with a guy from MeGoo but he had  
trouble compiling and testing the driver so he decided to send me the  
machine. I haven't received it yet though, so I'll be happy if  
someone else can play with me :-)

Florian, I'll send you files and instructions. I would not want to  
pollute the whole list with our attempts.

St.

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