Hi, I was trying to read raw HID input reports of a laptop touchpad (USB HID device) using /dev/hidraw* device file. I'm using Ubuntu 10.04 and looks like hidraw* file is not available for the touchpad. Also my laptop has a USB HID keyboard and corresponding hidraw file was successfully created for it at /dev/hidraw0. Is there any way to enable hidraw driver for the touchpad? Following is a part of dmesg output with lines related to HID devices: [ 2.001463] usb 3-1.1: new full speed USB device using uhci_hcd and address 3 [ 2.125566] usb 3-1.1: configuration #1 chosen from 1 choice [ 2.136714] usbcore: registered new interface driver hiddev [ 2.139772] input: HID 413c:8157 as /devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.1/3-1.1:1.0/input/input7 [ 2.139843] generic-usb 0003:413C:8157.0001: input,hidraw0: USB HID v1.11 Keyboard [HID 413c:8157] on usb-0000:00:1a.0-1.1/input0 [ 2.139866] usbcore: registered new interface driver usbhid [ 2.139868] usbhid: v2.6:USB HID core driver [ 2.211451] usb 3-1.2: new full speed USB device using uhci_hcd and address 4 [ 2.337585] usb 3-1.2: configuration #1 chosen from 1 choice [ 2.343878] input: HID 413c:8158 as /devices/pci0000:00/0000:00:1a.0/usb3/3-1/3-1.2/3-1.2:1.0/input/input8 [ 2.343971] generic-usb 0003:413C:8158.0002: input,hidraw1: USB HID v1.11 Mouse [HID 413c:8158] on usb-0000:00:1a.0-1.2/input0 >From this output we can see that both keyboard and touchpad (identified as mouse) devices were detected. Also the last contains a "hidraw1" string, but file with such name does not exists in /dev/. Following is usb-devices command output for keyboard and touchpad: T: Bus=03 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 3 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=413c ProdID=8157 Rev=01.00 C: #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=2mA I: If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=01 Prot=01 Driver=usbhid T: Bus=03 Lev=02 Prnt=02 Port=01 Cnt=02 Dev#= 4 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=413c ProdID=8158 Rev=01.00 C: #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=2mA I: If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=01 Prot=02 Driver=(none) You can see that "usbhid" driver is used for keyboard, but driver is none for the touchpad. Actually touchpad works normally, so I think some USB driver is really used. Thanks, Bohdan -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
