On Mon, Feb 15, 2021 at 10:10:26AM +0100, Neil Armstrong wrote:
> Hi,
> 
> On 13/02/2021 11:15, Mikko Perttunen wrote:
> > Hi all,
> > 
> > with the release of documentation headers for Tegra multimedia engines
> > (NVDEC, NVENC, NVJPG) [1], I have started working on the corresponding
> > implementations. Here's the first one, NVDEC.
> > 
> > The kernel driver is a simple Falcon boot driver based on the VIC
> > driver. Some code sharing should be considered there in the future.
> > The userspace driver to accompany this is a bit more complicated -
> > I have expanded vaapi-tegra-driver[2] to support MPEG2 decoding.
> > It should be noted that the implementation is still very clunky
> > and has poor performance, but it's a start.
> 
> Funny how all this tries to avoid all the DRM, remoteproc, V4L2-M2M stateless & co
> all the other vendors tries to make usage of...

Care to elaborate why you think this is trying to avoid anything? Mikko
pointed you at the documentation for these engines, provided a link to
an open-source (albeit work in progress) userspace driver and posts an
extension to an existing DRM driver to add the required kernel
functionality. That's a standard approach for submitting this kind of
driver.

Thierry