<div dir="ltr">> > Hello Greg,<br>> ><br>> > Thanks for the suggestions!<br>> > Yes, it will be better to implement the communication from the userspace.<br>> ><br>> > However, I was curious if the kernel implements some generic LED HID<br>> > interface already,<br>> > without the need to write custom code. Similarly, as it's done for example<br>> > for the HID multitouch,<br>> > where the device only needs to report the correct report descriptor.<br><br>> I do not think there is a generic HID description yet, is there? If so,<br>> the kernel should support it, otherwise it is all vendor-specific stuff<br>> that belongs in userspace.<br><br>Thanks again for your answer.<div>There is "LED Page" defined in HID Usage Tables. However, I can't find any drivers that implement it.</div><div><br></div><div>But maybe I'm looking in the wrong direction.</div><div><br></div><div>Best regards,</div><div>Kirill Yatsenko<br><br></div></div><br><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, 19 Jan 2024 at 13:07, Greg KH <<a href="mailto:greg@kroah.com">greg@kroah.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Fri, Jan 19, 2024 at 12:45:52PM +0100, Kirill Yatsenko wrote:<br>
> Hello Greg,<br>
> <br>
> Thanks for the suggestions!<br>
> Yes, it will be better to implement the communication from the userspace.<br>
> <br>
> However, I was curious if the kernel implements some generic LED HID<br>
> interface already,<br>
> without the need to write custom code. Similarly, as it's done for example<br>
> for the HID multitouch,<br>
> where the device only needs to report the correct report descriptor.<br>
<br>
I do not think there is a generic HID description yet, is there? If so,<br>
the kernel should support it, otherwise it is all vendor-specific stuff<br>
that belongs in userspace.<br>
<br>
thanks,<br>
<br>
greg k-h<br>
</blockquote></div>