Here is the status so far. The digitizer is recognized by the USB
Subsystem but, there are no input handlers registered for it i.e. mouse
or event. I'm not sure how to get an input event handler registered on
the device. Below is the output of lsusb.
Bus 001 Device 008: ID 078c:0401
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x078c
idProduct 0x0401
bcdDevice 1.00
iManufacturer 1 GTCO/CalComp
iProduct 2 Digitizer
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 34
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x40
(Missing must-be-set bit!)
Self Powered
MaxPower 2mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Devices
bInterfaceSubClass 0 No Subclass
bInterfaceProtocol 0 None
iInterface 3 TABLET BQ1.4
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.00
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 147
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 5
Device Status: 0x0001
Self Powered
Regarding the IPanel. Both a mouse and input event handler are
registered to it when it is plugged in. Instead of blacklisting it and
using a separate driver, is there a way to unregister the mouse handler
and just leave the general event handler?
Please let me know if I should be working with someone else on these
issues, I don't want to bug anyone.
Thanks,
On Fri, 2007-02-09 at 08:46 -0800, Greg KH wrote:
> On Thu, Feb 08, 2007 at 09:37:47PM -0700, Roberson, Jeremy wrote:
> > The HID driver doesn't parse Digitizer data properly which, is why
> > Wacom, etc requires custom drivers for their digitizers. Same for our
> > digitizers. As far as I know, Digitizers have never been parsed
> > properly by the HID Driver. I can get more details on what is not
> > parsed properly by the HID Driver but, it will take some time.
>
> It would be good to learn more about this, so possibly we can fix the
> HID layer so that it works for everyone and these drivers can go away.
>
> thanks,
>
> greg k-h
--
Jeremy Roberson
Software Engineer
GTCO CalComp
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