Re: 2.6: Synaptics TouchPad and GPM (GPM patches)

[Vojtech Pavlik]

On Fri, Aug 22, 2003 at 09:46:56PM -0500, Dmitry Torokhov wrote:
> Hi,
> 
> Apologies for the semi-offtopic message but ever since support for 
> Synaptics' absolute mode went in many people complained that it 
> broke GPM. 
> 
> I did some work on extending evdev support in GPM, the new protocol
> implementation supports following subtypes:
> 
> 1. relative device - standard relative device like generic PS/2 mouse
>    reporting via /dev/input/eventX
> 2. absolute device - touch screens and tablets.
> 3. touchpad - device reporting absolute coordinates and pressure via
>    /dev/input/event, GPM recognizes normal and corner tapping.
> 4. synaptics - same as touchpad but also supports multi-finger taps
>    (expects MSC_GESTURE messages from the kernel).
> 
> Kernel has to support EV_SYNC for touchpad and synaptics support, 
> relative and absolute modes can be used with 2.4 kernels by specifying
> nosync option.

You should not need any options for this - it's all queryable via ioctls ...

> You will find the patches at:
> http://www.geocities.com/dt_or/gpm/patches/
> 
> RPMs (binary and source) built on RH8 are at:
> http://www.geocities.com/dt_or/gpm/RPMS/
> 
> The README is at:
> http://www.geocities.com/dt_or/gpm/gpm.html
> 
> The patches work pretty well for me and I hope they will work for others too.
> Because of limited hardware I could not test evdev with touchscreen or a 
> tablet.
> 
> Dmitry.
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-- 
Vojtech Pavlik
SuSE Labs, SuSE CR
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