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bootlin / v4l2-request-test

A standalone tool to test the Linux Video4Linux2 Request API
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Unable to find any connected connector #4

Closed petit-miner closed 5 years ago

petit-miner commented 5 years ago

Hi there,

I'm struggling to test the VPU of the V3s. The display-engine and sun4i-drm are enabled in the devicetree:

[ 1.729904] sun4i-drm display-engine: bound 1100000.mixer (ops 0xc094947c) [ 1.737527] sun4i-drm display-engine: bound 1c0c000.lcd-controller (ops 0xc0946160) [ 1.745296] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 1.751916] [drm] No driver support for vblank timestamp query. [ 1.758633] [drm] Initialized sun4i-drm 1.0.0 20150629 for display-engine on minor 0 [ 1.767556] [drm] Cannot find any crtc or sizes

When I try to run v4l2-request-test:

root@LicheePi:~/v4l2-request-test# ./v4l2-request-test -f 25 -l Config: Video path: /dev/video0 Media path: /dev/media0 DRM path: /dev/dri/card0 DRM driver: sun4i-drm Slices path: data/bbb-mpeg2 Slices filename format: slice-%d.dump FPS: 25

Preset: Name: bbb-mpeg2 Description: big_buck_bunny_480p_MPEG2_MP2_25fps_1800K.MPG License: Creative Commons Attribution 3.0 Attribution: Blender Foundation | www.blender.org Width: 854 Height: 480 Frames count: 25 Format: MPEG2

Media device driver: cedrus Destination format: NV12 YUV Unable to find any connected connector Unable to select DRM connector/encoder Unable to start display engine

I'm currently working with the mainline 5.0 kernel. Should I use the Linux Media tree?

thanks

paulkocialkowski commented 5 years ago

Hey!

It looks like the issue you're having is on the DRM driver side:

[drm] Cannot find any crtc or sizes

Indicates that you don't have a working display pipeline with the DRM driver. As a result, our tool doesn't find any connected connector and can't output anything.

Do you have a screen connected to your board at all and does it work properly with e.g. fbcon?

petit-miner commented 5 years ago

Yes I connected a parallel LCD and I can see the terminal, however my inital plan was to use the VPU to take video input from a parallel camera and decode it to h264. Is there userspace software out there, that supports this? (like ffmpeg?) Or is this WIP?

thanks