Re: Maximum values for multi_intensity sysfs attribute

[Werner Sembach]

Am 03.03.26 um 21:11 schrieb Armin Wolf:
> Am 14.02.26 um 20:15 schrieb Armin Wolf:
>
> > Hello,
> >
> > i am currently adding support for RGB keyboard backlight control to the 
> > uniwill-laptop
> > driver, and want to use the multicolor LED class for that. However the 
> > hardware interface
> > is a bit exotic:
> >
> > - 5 global brightness levels
> > - 50 intensity levels for each R/G/B channel
> >
> > I am now asking myself how this should be mapped onto the multi_intensity 
> > sysfs attribute.
> > Should i set max_brightness to 5 and reject intensity values larger that 50? 
> > Or should
> > i set max_brightness to 50 and interpolate? What is the input range of 
> > intensity values?
> >
> > Thanks,
> > Armin Wolf 
>
> Any ideas on this? My current approach would be to use 5 for the max 
> brightness and clamp intensity
> values to 50.
Another idea is to have multi_intensity values 0-255 and then map it to the 
closest color so normal rgb values can be passed
> Thanks,
> Armin Wolf