On Fri, Dec 4, 2020 at 10:40 PM Gwendal Grignou <gwendal@xxxxxxxxxxxx> wrote: > > Add timestamp channel: use standard procedure to collect timestamp. > As some firmware do not notify on illuminance changes, add a do -> does > trigger to periodically query light. Sounds like two things in one change, you have to split. > We can either use the device trigger, or a software trigger like sysfs > or hrtimer. > > This change is not backward compatible. You mean you are breaking ABI? It won't go like this. > To get samples from bios that bios -> BIOS > supports notification, we need to register the hardware trigger first: -- With Best Regards, Andy Shevchenko