You may want to look at http://www.signal11.us/oss/hidapi/ too, it has nice interface to HID device and supports libusb and hidraw backends (y) Regards, 2016-09-10 12:14 GMT-03:00 Greg KH <greg@kroah.com>:
On Sat, Sep 10, 2016 at 04:41:34PM +0200, Pol Eyschen wrote:
Hi everyone,
I want to implement some custom functions of my mouse (Madcatz RAT5) in Linux, e.g custom DPI-values. As this requires writing over USB to the firmware of the mouse I was thinking of writing a module to accomplish this. However I don't want to reimplement a whole mouse-driver,so I wanted to ask if there is a possibility of binding the device to 2 modules or having my module extend usbhid, so that my module would only be used to perform these custom operations while usbhid stays in charge of the whole "mouse business".
Please just use the hidraw userspace driver/library instead, that way you don't have to unbind the kernel driver and everything should work just fine without having to touch the kernel at all.
Hope this helps,
greg k-h
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