Hi Pavel, On 02/15/17 00:47, Pavel Machek wrote: > On Tue 2017-02-14 14:20:22, Sakari Ailus wrote: >> Add a V4L2 control class for voice coil lens driver devices. These are >> simple devices that are used to move a camera lens from its resting >> position. >> >> Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx> > > Looks good to me. > > I wonder... should we somehow expose the range of diopters to > userspace? I believe userland camera application will need that > information. It'd certainly be useful to be able to provide more information. The question is: where to store it, and how? It depends on the voice coil, the spring constant, the lens and the distance of the lens from the sensor --- at least. Probably the sensor size as well. On voice coil lenses it is also somewhat inexact. -- Kind regards, Sakari Ailus sakari.ailus@xxxxxxxxxxxxxxx
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