On 04/07/2025 10:04, Thierry Reding wrote:
On Mon, Jun 30, 2025 at 09:48:41AM +0100, Diogo Ivo wrote:
Hello,
This series adds support for the NVJPG hardware accelerator found in the
Tegra210 SoC.
The kernel driver is essentially a copy of the NVDEC driver as both
engines are Falcon-based.
For the userspace part I have written a Mesa Gallium backend [1] that,
while still very much experimental, works in decoding images with VA-API.
I have been using ffmpeg to call VA-API with the following command:
ffmpeg -v verbose -hwaccel vaapi -hwaccel_device /dev/dri/renderD129 -i
<input.jpg> -pix_fmt bgra -f fbdev /dev/fb0
which decodes <input.jpg> and shows the result in the framebuffer.
The firmware for the engine can be obtained from a Linux for Tegra
distribution. Due to the way the Gallium implementation works for Tegra
the GPU also needs to be enabled.
Thanks!
Diogo
To: Thierry Reding <[email protected]>
To: Mikko Perttunen <[email protected]>
To: David Airlie <[email protected]>
To: Simona Vetter <[email protected]>
To: Jonathan Hunter <[email protected]>
To: Philipp Zabel <[email protected]>
To: Rob Herring <[email protected]>
To: Krzysztof Kozlowski <[email protected]>
To: Conor Dooley <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Diogo Ivo <[email protected]>
[1]:
https://gitlab.freedesktop.org/d.ivo/mesa/-/tree/diogo/vaapi_gl?ref_type=heads
Dave, Simona,
This doesn't add new userspace ABI and instead reuses the same ABI that
we use for VIC and NVDEC, but it does technically add a new driver for
one of the multimedia engines.
Given that we have Diogo's VA-API work on gitlab, I think all of the
criteria are met to exercise this.
If you don't have any objections, I'd like to apply this for the
upcoming release.
We would like to merge this for v6.19 and so please let us know if you
have any objections.
For the series ...
Reviewed-by: Jon Hunter <[email protected]>
Cheers
Jon
--
nvpublic
