linux-kernel - Re: SOLVED support of touchscreen reported as eGalax but is not working

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Date:	Mon, 2 Feb 2009 22:59:29 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Max Weninger <max.weninger@...il.com>
Cc:	linux-kernel@...r.kernel.org,
	Niels de Vos <niels.devos@...cor-nixdorf.com>,
	linux-usb@...r.kernel.org, Daniel Ritz <daniel.ritz@....ch>
Subject: Re: SOLVED support of touchscreen reported as eGalax but is not
 working

On Sat, 31 Jan 2009 23:09:01 +0100 Max Weninger <max.weninger@...il.com> wrote:

> Hi to all
> 
> On Fri, 30 Jan 2009 15:18:36 -0800
> Andrew Morton <akpm@...ux-foundation.org> wrote:
> 
> > (cc restored - please jsut do reply-to-all, always)
> > 
> > On Tue, 27 Jan 2009 02:05:29 +0100
> > Max Weninger <max.weninger@...il.com> wrote:
> > 
> > > Hi again
> > > 
> > > On Tue, 27 Jan 2009 01:48:22 +0100
> > > Max Weninger <max.weninger@...il.com> wrote:
> > > 
> > > > On Tue, 27 Jan 2009 01:38:06 +0100
> > > > Max Weninger <max.weninger@...il.com> wrote:
> > > > 
> > > > > Hi
> > > > > 
> > > > > On Mon, 26 Jan 2009 13:13:23 +0100
> > > > > Niels de Vos <niels.devos@...cor-nixdorf.com> wrote:
> > > > > 
> > > > > > Max Weninger wrote:
> > > > > > > Niels de Vos <niels.devos@...cor-nixdorf.com> wrote:
> > > > > > >> You can obviously download the drivers from
> > > > > > >> <http://home.eeti.com.tw/web20/TouchKitDriver/linuxDriver.htm>.
> > > > > > >>
> > > > > > >> It would be great if eGalax could be convinced to get these
> > > > > > >> drivers included in main-line ;)
> > > > > > > 
> > > > > > > Thanks for your quick reply
> > > > > > > BUT: I have tried those driver also
> > > > > > > 
> > > > > > > I tried this "brandnew" one (but also older ones)
> > > > > > > http://home.eeti.com.tw/web20/drivers/touch_driver/Linux/2.06.2416/TouchKit-2.06.2410-32b-k26.tar.gz
> > > > > > > after making it compile for 2.6.28.2 :)
> > > > > > > since there is source code delivered
> > > > > > 
> > > > > > For what it's worth; the version we use from eGalax is
> > > > > > 1.0.3.1701. I don't have the hardware here atm, so I can't
> > > > > > test an other driver now.
> > > > > 
> > > > > I tried kernel 2.6.23.17 and there the touchscreen is recognized
> > > > > using the builtin usbtouchscreen driver
> > > > 
> > > > It also works with 2.6.26.8
> > > 
> > > After comparing the usbtouchscreen.c sources between the different
> > > versions I got it working by commenting the follwoing lines
> > > 
> > > ...
> > > #ifdef CONFIG_TOUCHSCREEN_USB_EGALAX
> > >         /* ignore the HID capable devices, handled by usbhid */
> > >         {USB_DEVICE_HID_CLASS(0x0eef, 0x0001), .driver_info =
> > > DEVTYPE_IGNORE}, {USB_DEVICE_HID_CLASS(0x0eef,
> > > 0x0002), .driver_info = DEVTYPE_IGNORE}, ...
> > > 
> > > Now the entry in /proc/bus/input/devices is created as in the
> > > older versions.
> > > 
> > > So it seems that usbhid is not correctly handling my type
> > > of touchscreen if I understand the comment there correctly
> > > 
> > 
> > So... how do we fix this for real?
> 
> Well I am really not an expert in kernel programming :-)
> I found out that these lines where added based on this thread from 2008
> 
> http://kerneltrap.org/mailarchive/linux-kernel/2008/6/28/2286264/thread
> 
> So all I can do is to provide any help in testing if needed
> 

(optimistically cc'ing Daniel).
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