I was thinking about adding a slide control to dim the flashlight instead of just switching it on/off.

Now, I had a look at the source and there is an "intensity" parameter, but apparently, only 0 and 1 integer values are possible. As far as I can tell, the flashlight is controlled by some V4L-extension, but I can't find any documentation about that…

Does anybody know anything about that? Any possibilities to control the intensity?
I would be surprised if the flash LED didn't have these capabilities…

I would rather not go for software PWM