From: Kirill Yatsenko <kirill31051997f@gmail.com>
To: Greg KH <greg@kroah.com>
Cc: kernelnewbies@kernelnewbies.org
Subject: Re: Generic USB LED HID driver
Date: Fri, 19 Jan 2024 13:40:04 +0100 [thread overview]
Message-ID: <CA+rTsQ6+yoG6t8itMeCfwX0yakAwX13dAFBJziZnzF6DsuROTQ@mail.gmail.com> (raw)
In-Reply-To: <2024011912-flask-jawless-e8e4@gregkh>
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> > 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 again for your answer.
There is "LED Page" defined in HID Usage Tables. However, I can't find any
drivers that implement it.
But maybe I'm looking in the wrong direction.
Best regards,
Kirill Yatsenko
On Fri, 19 Jan 2024 at 13:07, Greg KH <greg@kroah.com> wrote:
> 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
>
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prev parent reply other threads:[~2024-01-19 12:41 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-19 10:21 Generic USB LED HID driver Kirill Yatsenko
2024-01-19 11:17 ` Greg KH
2024-01-19 11:45 ` Kirill Yatsenko
2024-01-19 12:07 ` Greg KH
2024-01-19 12:40 ` Kirill Yatsenko [this message]
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