On Wed, Dec 14, 2016 at 02:41:28PM +0200, Mikko Perttunen wrote: > On 14.12.2016 14:30, Daniel Vetter wrote: > > On Wed, Dec 14, 2016 at 01:16:10PM +0200, Mikko Perttunen wrote: > > > This series adds IOMMU support to Host1x and TegraDRM > > > and adds support for the VIC (Video Image Compositor) > > > host1x client. The series is available as a git repository at > > > git://github.com/cyndis/linux.git; branch vic-2. > > > > > > A userspace test case for VIC can be found at > > > https://github.com/cyndis/drm/tree/work/tegra. > > > The testcase is in tests/tegra and is called submit_vic. > > > The testcase/TRM include full headers and documentation > > > to program the unit. The unit by itself, however, does not > > > readily map to existing userspace library interfaces, so > > > implementations for those are not provided. > > > > Afaik libva has an entire pile of post-processing support. Pretty sure > > other video transcode libraries have similar interfaces, so should all be > > possible to implement this. > > We don't have any actual video transcoding support though, so unless it's > possible to just implement a part of libva and defer the rest to some CPU > implementation, I don't see how this is useful. I suppose I could implement > a GStreamer plugin for colorspace conversion or resizing, since those are > very modular. Hm, I guess the question then is, how did that get enabled? > > Until that exists I really think that the VIC part (and only that, since > > tk1/tx1 in general seems to work with nouveau and all that) should stay > > out of tree. > > Ok. I'll try to whip up something. But yeah some gstreamer thing might be doable, but not sure they take that (I don't have any contacts there). Video is a bit a mess, there's no clear go-to place for dropping some new hw support. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html