linux-kernel - Re: [PATCH] hid: Support for Litra Glow

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Date:   Tue, 20 Dec 2022 10:22:53 +0100
From:   Bastien Nocera <hadess@...ess.net>
To:     Andreas Bergmeier <abergmeier@....net>,
        Jiri Kosina <jikos@...nel.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        Filipe Laíns <lains@...eup.net>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] hid: Support for Litra Glow

On Fri, 2022-12-16 at 15:27 +0100, Bastien Nocera wrote:
> On Fri, 2022-12-16 at 10:53 +0100, Bastien Nocera wrote:
> > On Thu, 2022-12-15 at 22:09 +0100, Andreas Bergmeier wrote:
> > > Tries to implement as general support for Illumination Light as
> > > possible. Note that it is singular, which means by Logitech spec
> > > we
> > > are
> > > fine off with just handling one capability/device.
> > 
> > Your email client absolutely trashed the patch's indentation, it's
> > unreadable as-is.
> > 
> > > Implementation currently only exposes Brightness and On/Off
> > > controls.
> > > Does currently not expose Color Temperature because LEDs does not
> > > support it.
> > > 
> > > Introduces HIDPP_QUIRK_CLASS_SIMPLE_START to prevent reconnect on
> > > startup. Could not get Glow to work with that.
> > 
> > I'd really rather we didn't introduce a new quirk, but instead
> > fixed
> > the fact that we need to restart the HID transport to support 3 (!)
> > devices.
> > 
> > Would something like the attached patch work? I haven't tested it
> > yet,
> > but if it works for you, I'll test it on the devices I have here.
> 
> A tested version attached. I'll need to test it against a T650 before
> sending it for review.

I've tested it with a T650, and it works, so I sent it for review.

Would be great to know if it helps simplify your driver.

Cheers