On Sun, Apr 3, 2011 at 7:51 PM, Peter Hutterer <peter.hutte...@who-t.net>wrote:
> On Sun, Apr 03, 2011 at 07:23:34PM -0700, Ping Cheng wrote:
> > On Sun, Apr 3, 2011 at 6:35 PM, Peter Hutterer <peter.hutte...@who-t.net
> >wrote:
> >
> > > >
> > > > What information can the user use for Uniq to associate the devices,
> > > which
> > > > we do not have in the driver? Both devices have the same product ID
> and
> > > > name.
> > >
> > > I only have one Bamboo, but the test code below gives me the right
> answer.
> > > argv[1,2] are the two device nodes (/dev/input/eventX and
> > > /dev/input/eventY).
> > >
> > > static struct udev_device *udev_from_file(struct udev *udev, const char
> > > *filename)
> > > {
> > > struct stat st;
> > > stat(filename, &st);
> > > return udev_device_new_from_devnum(udev, 'c', st.st_rdev);
> > > }
> > >
> > > int main(int argc, char** argv)
> > > {
> > > int rc = 1;
> > > struct udev *udev = NULL;
> > > struct udev_device *dev1, *dev2 = NULL;
> > > struct udev_device *parent1, *parent2;
> > > const char *syspath1, *syspath2;
> > >
> > > if (argc < 3)
> > > goto out;
> > >
> > > udev = udev_new();
> > > dev1 = udev_from_file(udev, argv[1]);
> > > dev2 = udev_from_file(udev, argv[2]);
> > >
> > > if (!dev1 || !dev2)
> > > goto out;
> > >
> > > parent1 = udev_device_get_parent_with_subsystem_devtype(dev1, "usb",
> > > "usb_device");
> > > parent2 = udev_device_get_parent_with_subsystem_devtype(dev2, "usb",
> > > "usb_device");
> > >
> > > syspath1 = udev_device_get_syspath(parent1);
> > > syspath2 = udev_device_get_syspath(parent2);
> > >
> >
> >
> > This looks very promising. So, we do not need anything from the user.
> > Everything could be done inside the driver. Are you going to make a
> patch?
>
> can't right now, got too many other things on my slate, sorry.
>
That's fine. I may be able to get to it after next week.
Can you test the code with two of your Intuos4's? If we get "Nope, different
devices" for two identical devices, we are ready to move forward. Otherwise,
...
I will not be in the office next whole week. So, I do not have two identical
devices to play with.
Ping
------------------------------------------------------------------------------
Create and publish websites with WebMatrix
Use the most popular FREE web apps or write code yourself;
WebMatrix provides all the features you need to develop and
publish your website. http://p.sf.net/sfu/ms-webmatrix-sf
_______________________________________________
Linuxwacom-devel mailing list
Linuxwacom-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linuxwacom-devel
