Re: Generic USB LED HID driver

On Fri, Jan 19, 2024 at 12:45:52PM +0100, Kirill Yatsenko wrote:

Hello Greg,

Thanks for the suggestions! Yes, it will be better to implement the communication from the userspace.

However, I was curious if the kernel implements some generic LED HID interface already, without the need to write custom code. Similarly, as it's done for example for the HID multitouch, where the device only needs to report the correct report descriptor.

I do not think there is a generic HID description yet, is there? If so, the kernel should support it, otherwise it is all vendor-specific stuff that belongs in userspace. thanks, greg k-h