linux-kernel - Re: [PATCH] HID: add multi-input quirk for NextWindow Touchscreen.

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Date:	Fri, 18 Dec 2009 15:02:06 +1000
From:	Peter Hutterer <peter.hutterer@...hat.com>
To:	Peter Korsgaard <jacmet@...site.dk>
CC:	Jiri Kosina <jkosina@...e.cz>, linux-input@...r.kernel.org,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] HID: add multi-input quirk for NextWindow Touchscreen.

On 09/12/09 19:42, Peter Korsgaard wrote:
>   Peter>  [root@...chie sbin]# ./nwtool -u -i
>   Peter>  Version:		2.99
>   Peter>  Serial:			617241
>   Peter>  Model:			1901
>   Peter>  HW capabilities:	0x40
>   Peter>  Rightclick delay:	1000 ms
>   Peter>  Doubleclick time:	200 ms
>   Peter>  Report mode:		4
>   Peter>  Drag threshold:		500
>   Peter>  Buzzer time:		40 ms
>   Peter>  Buzzer tone:		40
>   Peter>  Calibration key:	4
>   Peter>  Calibration presses:	3
>
> Hmm, what is report mode 4? Some kind of multi touch mode?
>
> What do you see if you install the Nextwindow USB config tool under
> Windows (unfortunately doesn't work under Wine) and look in the mouse
> tab? I guess you have a 4th option here.
>
> I see this:  http://peter.korsgaard.com/nw.png

argh. now you made me use vista! ;)

Installed version 2.8 today, it offers three modes in his interface: 
None, HID Mouse and "USB Digitiser". The last one was selected when I 
started into Vista. There's an extra checkbox "Multi-Touch reporting" 
that was not ticked.

The different combinations and the reporting mode output of nwtool:
USB Digitizer - multi-touch not ticked: reporting mode 4
USB Digitizer - multi-touch ticked: reporting mode 3
USB HID Mouse - multi-touch not ticked: reporting mode 1
USB HID Mouse - multi-touch ticked: reporting mode 9
None - multi-touch not ticked: reporting mode 0
None - multi-touch ticked: reporting mode 8

For reporting mode 4 and 3, the events are Z/Rx + touch
For reporting mode 1 and 9, the events are ABS_X/Y and left button
For reporting mode 0 and 8, no events are sent (unsurprisingly)

So it seems the only difference between our two models is the default 
reporting mode - assuming that 4 is the default, we've had this thing 
for a year without doing much with it but it could well be that someone 
set it earlier or one of the HP Touchsmart software pieces changed it.

>   >>  It's probably offtopic here, but we can move the discussion to the X
>   >>  list if you prefer - Last time I asked there I didn't get any reply
>   >>  though:
>   >>
>   >>  http://article.gmane.org/gmane.comp.freedesktop.xorg/40071/
>
>   Peter>  Ask louder :) I think I remember your email but it got flooded out of
>   Peter>  my inbox. In general there should be some method to do that though I
>   Peter>  need to check the implementation.
>
> OK, great - Let me know what you find. I did hack something up with
> evtouch, but would like to move to evdev instead.
> I'm willing to work on getting evdev to handle multi screen touchscreen
> setups better if needed, I just need a bit of guidance on how it should
> be handled.

replying to your email right now.

Cheers,
   Peter
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