On Thu, 22 Mar 2012, Arkadiusz Miśkiewicz wrote: > Hi, > > I'm detecting usb keyboards from shell using this simple script: > > for i in /sys/class/input/input*; do > [ ! -f $i/device/bInterfaceClass -o ! -f $i/device/bInterfaceProtocol ] && continue > bInterfaceClass=$(cat $i/device/bInterfaceClass) > bInterfaceProtocol=$(cat $i/device/bInterfaceProtocol) > if [ "$bInterfaceClass" = "03" -a "$bInterfaceProtocol" = "01" ]; then > module=$(readlink $i/device/driver/module) > module=$(basename $module) > > echo "found keyboard driven by $module" > fi > done > > but for keyboards hidden behind logitech unifying receiver there seem to > be no such information in /sys. > > Any ideas on how I can detect such keyboards via /sys or other > scriptable method? > > (note that I'm interested only in "regular" keyboards, so single buttons > and some other devices are not interesting) > > dmesg: > > [130816.672862] usb 6-2: new full-speed USB device number 4 using uhci_hcd > [130816.856173] usb 6-2: New USB device found, idVendor=046d, idProduct=c52b > [130816.856183] usb 6-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 > [130816.856190] usb 6-2: Product: USB Receiver > [130816.856195] usb 6-2: Manufacturer: Logitech > [130816.868751] logitech-djreceiver 0003:046D:C52B.000F: hiddev0,hidraw2: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:1d.0-2/input2 > [130816.878201] input: Logitech Unifying Device. Wireless PID:4004 as /devices/pci0000:00/0000:00:1d.0/usb6/6-2/6-2:1.2/0003:046D:C52B.000F/input/input14 > [130816.878717] logitech-djdevice 0003:046D:C52B.0010: input,hidraw3: USB HID v1.11 Keyboard [Logitech Unifying Device. Wireless PID:4004] on usb-0000:00:1d.0-2:1 I suggest you inspect all available input devices using EVIOCGBIT ioctl() instead, querying the device capabilities (and looking namely on the EV_KEY capabilities). Alternatively, you can find this information prepared for you in /proc/bus/input/devices. If you really want to restrict yourself to USB keyboards, you'll have to inspect 'Phys' as well. This you can do via EVIOCGPHYS ioctl() or look into procfs as well. -- Jiri Kosina SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
