Hi Guennadi, On 05/03/2015 06:11 PM, Guennadi Liakhovetski wrote: > Hi all, > > Just a quick opinion poll - where and how should the soc-camera framework > and drivers be heading? Possible (probably not all) directions: > > (1) all is good, keep as is. That means keep all drivers, killing them off > only when it becomes very obvious, that noone wants them, keep developing > drivers, that are still being used and updating all of them on any API > updates. Keep me as maintainer, which means slow patch processing rate and > no active participation in new developments - at hardware, soc-camera or > V4L levels. > > (2) we want more! I.e. some contributors are planning to either add new > drivers to it or significantly develop existing ones, see significant > benefit in it. In this case it might become necessary to replace me with > someone, who can be more active in this area. > > (3) slowly phase out. Try to either deprecate and remove soc-camera > drivers one by one or move them out to become independent V4L2 host or > subdevice drivers, but keep updating while still there. > > (4) basically as (3) but even more aggressively - get rid of it ASAP:) > > Opinions? Expecially would be interesting to hear from respective > host-driver maintainers / developers, sorry, not adding CCs, they probably > read the list anyway:) I'm closest to 1. I would certainly not use it for new drivers, I see no reason to do that anymore. The core frameworks are quite good these days and I think the need for soc-camera has basically disappeared. But there is no need to phase out or remove soc-camera drivers (unless they are clearly broken and nobody will fix them). And if someone wants to turn a soc-camera driver into a standalone driver, then I would encourage that. However, there are two things that need work fairly soon: 1) the dependency of subdev drivers on soc_camera: that has to go. I plan to work on that, but the first step is to replace the video crop ops by the pad selection ops. I finally got my Renesas sh7724 board up and running, so I hope to make progress on this soon. I'll update soc-camera as well to conform to v4l2-compliance. Once that's done I will investigate how to remove the soc-camera dependency. The soc-camera dependency kills the reusability of those drivers and it really needs to be addressed. 2) Converting soc-camera videobuf drivers to vb2. At some point vb1 will be removed, so any remaining vb1 driver will likely be killed off if nobody does the conversion. I believe it is only omap1 and pxa that still use videobuf. I think omap1 might be a candidate for removal, but I don't know about the pxa. Guennadi, what is the status of these drivers? If I would do a vb2 conversion for the pxa, would you be able to test it? Regards, Hans -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
