On 2/3/26 9:41 AM, Erikas Bitovtas wrote: >> Pro tip: when you reply, trim out the not relevant parts like this. > > Noted. >> We could start with hard-coding the als_trans_ratio in this driver for the >> scale (and write comments explaining where it came from and what we know >> and don't know). Then at least we would have a scale. And if anyone needs >> something more accurate and reverse-engineers it we could fix it up later >> with a DT property or something like that. >> > > In arch/arm/boot/dts/qcom/libra/common-proximity.dtsi Xiaomi sets this > property > to 16, and they set integration time in their driver to 160ms. Maybe > als_trans_ratio has something to do with integration time?
I assume you have the hardware and can do a test to confirm this. :-) > In that case, we can > calculate the scale from a formula, like this: > scale = cm36686_als_it_times[index][1] / 10000 * 40000 > val = scale / 1000000 > val2 = scale % 1000000 > This would allow us to preserve lux value when changing integration time.
