Daniel Ritz wrote:
On Saturday 28 June 2008 17:19:16 Daniel Ritz wrote:
hi
The eGalax touchscreen used in the HP tx1305us tablet PC (and presumably
the rest of the tx1000 series) uses a different format for events from
the device than the existing driver supports.
is there more information available? datasheets? drivers?
>>
Add a new device description and interrupt packet handler for the
touchscreen used in the tx1305us, claiming the USB device ID for the
device that this patch was tested with from the older eGalax device code.
NAK. you cannot change device IDs currently used to some new code.
this will break most eGalax setups as the device ID 0x0eef,0x0001 is used
in most of them, including the one i have..
you'll need to find a way to distinguish the screens. as a starting point
i attached an lsusb -vvv output from my screen...
reading the latest driver guide and programming guide from eGalax (now EETI btw.
www.eeti.com.tw ) it turns out that the newer devices should support the HID
format and report with that by default. those newer screens are handled by the
'usbhid' driver. have you tried loading that one before usbtouchscreen?
Okay, just built a kernel without the usbtouchscreen driver, and it
recognized the touchscreen as belonging to the usbhid driver, and it
works. Didn't even have to change my X configuration. Thank you.
can you give an lsusb -vvv output?
Bus 001 Device 005: ID 0eef:0001 D-WAV Scientific Co., Ltd eGalax
TouchScreen
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x0eef D-WAV Scientific Co., Ltd
idProduct 0x0001 eGalax TouchScreen
bcdDevice 1.00
iManufacturer 1 eGalax INC.
iProduct 2 USB TouchController
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 34
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 1 eGalax INC.
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Devices
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 2 Mouse
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 2.10
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 141
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 3
Device Status: 0x0002
(Bus Powered)
Remote Wakeup Enabled
in case the usbhid driver does not work, it's possible to put the touchscreen
into the non-HID operating mode and have to current code work again..it's easy
to code...but please try usbhid first...
And usbhid works, so... what's the next step?
rgds
-daniel
-- Alastair Bridgewater
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