On Sat, 29 Oct 2022 at 18:52, Pavel Machek <pavel@xxxxxx> wrote: > > On the device Logitech Litra Glow it is possible to set not only the > > brightness but also the color temperature (both via usb as well as via > > hardware). > > I am currently trying to add support for the device - and expose it > > via LED - into the kernel. > > So to support all device capabilities I am proposing to extend LEDs by > > color temperature: > > And initial patch for the headers: > > Internally, the litra glow is something like RGB LED, right? Can we > support it as a multicolor LED? The litra glow has 2 control dimensions - brightness and color temperature. Both dimensions can be controlled in something of a continuous range (not sure whether these are strictly linear or not). Thus mapping to RGB would look like more of a very sparse array. Also, not sure which exact RGB value you would map a color temperature to anyway. So at first glance supporting it as a multicolor LED does not seem a good match to me.
