Hi Sakari, On 4/12/23 14:05, Sakari Ailus wrote: > Hi Michael, > > On Wed, Apr 12, 2023 at 01:57:36PM +0200, Michael Riesch wrote: >> Hi Sakari, >> >> On 4/12/23 13:50, Sakari Ailus wrote: >>> Hi Michael, >>> >>> On Wed, Apr 12, 2023 at 10:00:26AM +0200, Michael Riesch wrote: >>>> - Different controls: If moving = (V4L2_CID_FOCUS_ABSOLUTE == current), >>>> then what happens if the application performs a >>>> V4L2_CID_FOCUS_RELATIVE with -3? current should reach 39, >>>> V4L2_CID_FOCUS_ABSOLUTE is still at 42, the lens is still moving from >>>> the application's point of view. >>> >>> Would there be a reason to implement both of these controls in a single >>> driver? AFAIU, the relative one should be used if there absolute value >>> isn't known to the driver. >> >> Probably not, but on the other hand there is nothing the prevents a >> driver developer from doing so, right? Point is that should there be a >> driver which does implement both controls, we are in trouble AFAIU. > > I think the documentation should be improved in this regard. The documentation of which control exactly? And what items should be added? Thanks for the pointers! Best regards, Michael > > Also cc Hans. >
