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... Neil > > This series is based on top of the "Host1x/TegraDRM UAPI" series. > For testing, appropriate firmware should be obtained from a > Linux for Tegra distribution for now; the GPU should also be > enabled in the device tree. > > Series was tested on Tegra186. > > Thanks! > > Mikko > > [1] https://github.com/NVIDIA/open-gpu-doc/tree/master/classes/video > [2] https://github.com/cyndis/vaapi-tegra-driver > > Mikko Perttunen (3): > dt-bindings: Add YAML bindings for Host1x and NVDEC > arm64: tegra: Add NVDEC to Tegra186 device tree > drm/tegra: Add NVDEC driver > > .../gpu/host1x/nvidia,tegra20-host1x.yaml | 129 +++++ > .../gpu/host1x/nvidia,tegra210-nvdec.yaml | 90 ++++ > MAINTAINERS | 1 + > arch/arm64/boot/dts/nvidia/tegra186.dtsi | 15 + > drivers/gpu/drm/tegra/Makefile | 3 +- > drivers/gpu/drm/tegra/drm.c | 4 + > drivers/gpu/drm/tegra/drm.h | 1 + > drivers/gpu/drm/tegra/nvdec.c | 497 ++++++++++++++++++ > drivers/gpu/host1x/dev.c | 12 + > include/linux/host1x.h | 1 + > 10 files changed, 752 insertions(+), 1 deletion(-) > create mode 100644 Documentation/devicetree/bindings/gpu/host1x/nvidia,tegra20-host1x.yaml > create mode 100644 Documentation/devicetree/bindings/gpu/host1x/nvidia,tegra210-nvdec.yaml > create mode 100644 drivers/gpu/drm/tegra/nvdec.c > _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
