> Solaar is not a device driver and responds only to special messages from devices that are otherwise ignored by the Linux input system.
The normal Linux drivers implement what's needed to receive the HID message. This just handles some vendor specific messages on top of that. A bit like how a program can send a custom vendor specific TCP message on top of the existing OS network drivers without having to itself be a kernel level network driver.
The normal Linux drivers implement what's needed to receive the HID message. This just handles some vendor specific messages on top of that. A bit like how a program can send a custom vendor specific TCP message on top of the existing OS network drivers without having to itself be a kernel level network driver.