Hi Hans, On Vi, 2019-11-08 at 15:06 +0100, Hans Verkuil wrote: > > Is there a "good example" of a v4l m2m driver that passes these > vim2m. Also drivers/media/platform/mtk-jpeg/ (although I'm not sure > when > it was last tested with v4l2-compliance, so it might be a bit out of > date). > > > > > streaming tests? That would save some time on my side. Thanks a lot for the examples. I'm sending _v2 of the patch, with fixes for streaming tests. One mention here, I dropped the support for USERPTR buffers, based on this: https://lwn.net/Articles/447435/ "VB2_USERPTR: buffers allocated in user space. Normally, only devices which can do scatter/gather I/O can deal with user-space buffers. Interestingly, videobuf2 supports contiguous buffers allocated by user space; the only way to get those, though, is to use some sort of special mechanism like the out-of-tree Android "pmem" driver. Contiguous I/O to huge pages is not supported." I wonder if VB2_USERPTR make sense together with &vb2_dma_contig_memops? I see at least 1 driver with this combination (s5p-jpeg), I would be surprised if that passes the streaming tests. Regards, Mirela
