On Sat, Sep 10, 2016 at 08:58:07PM +0200, Pol Eyschen wrote: > On 10/09/16 17:14, Greg KH wrote: > > 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 > > > > I looked at hidraw, unfortunately it doesn't work for me, as the mouse > expects control URBs with proprietary requests, hence my thought for a > kernel module. Ok, then yes, you need to have a separate kernel driver. Look at one of the many examples of this in the kernel already, this is quite common. For specific questions about this, I suggest asking on the linux-input mailing list, as that is where the developers of this code live. good luck! greg k-h _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
