Ho Robin, On Sat, Jan 29, 2011 at 09:15:11AM +0100, Robin Theunis wrote: > Hi Devs, > > Currently I am design a USB product, and in that process I also look > if almost every OS supports my device. > The device is just only a HID digitizer or touch tablet thingy. It > reports it self also as HID device. This is to have it > work PLUG and PLAY. But I gotten a cold shower when trying this on my > linux pcs. It doesn't work! > I did some investigation and found that the linux (kernel) only > support mouses and keyboard, all the other usage pages > that are included in the USB HID specs aren't implemented. > http://www.usb.org/developers/devclass_docs/Hut1_11.pdf > > Is there a reason why they aren't implemented? especially the > digitizer thingies because of all the new tablets? Linux HID driver does have code to handle digitizers, please take a look at drivers/hid/hid-input.c::hidinput_configure_usage(). > Is it difficult > to make a driver to support my device? It should not be. You might need to tweak usage mappings a bit by the way of writing small HID sub-driver. Look for examples in drivers/hid/hid-<vendor>.c If you need additional help I'd recommend asking on linux-input@xxxxxxxxxxxxxxx > I have seen that there are a > lot of wacom drivers, I think doing all the same thing. > Wacoms are quite different since they are not HID devices but handler by a completely separate driver. Thanks. -- Dmitry -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
