Hi, On Fri, Jun 10, 2011 at 05:18:39PM -0400, Alan Stern wrote: > > > 2. Until recently in the history of Linux, there was an irreconcilable > > > conflict. If a kernel driver for the video streaming mode was present and > > > installed, it was not possible to use the camera in stillcam mode at all. > > > Thus the only solution to the problem was to blacklist the kernel module > > > so that it would not get loaded automatically and only to install said > > > module by hand if the camera were to be used in video streaming mode, > > > then > > > to rmmod it immediately afterwards. Very cumbersome, obviously. > > > > true... but why couldn't we combine both in kernel or in userspace > > altogether ? Why do we have this split ? (words from a newbie in V4L2, > > go easy :-p) > > I think the problem may be that the PTP protocol used in the still-cam > mode isn't suitable for a kernel driver. Or if it is suitable, it > would have to be something like a shared-filesystem driver -- nothing > like a video driver. You certainly wouldn't want to put it in V4L2.
ach true.. Had forgotten that detail. Needs more thinking. -- balbi
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