This series presents an initial version of a write back video node for the VSP DRM pipeline, utilising the existing vsp1_video base where possible. The current version limits the output of the video node to match the frames presented by updates from the CRTC atomic flush events. Matching the output rate against the vsync/display rate has proven more difficult and I wanted to get this out for review early. This series is based on renesas-drivers-2016-10-25-v4.9-rc2, and has been tested on a Salvator-H3. An updated/recent firmware is essential on this target otherwise WPF underruns will occur. This output can be tested with kmstest to generate frames and yavta to capture: Terminal 1: # kmstest --flip --sync Terminal 2: # yavta -c60 -n8 -f RGB24 -s1024x768 \ --file=frame-rgb24-1024x768-#.bin /dev/$VIDEO $VIDEO must be determined for your platform and represents the WPF Video node from the VSP-D. On Salvator-H3, on renesas-drivers-2016-10-25-v4.9-rc2 this is active at /dev/video28 Kieran Bingham (3): Revert "[media] v4l: vsp1: Supply frames to the DU continuously" v4l: vsp1: allow entities to have multiple source pads v4l: vsp1: Provide a writeback video device drivers/media/platform/vsp1/vsp1.h | 1 + drivers/media/platform/vsp1/vsp1_bru.c | 2 +- drivers/media/platform/vsp1/vsp1_clu.c | 2 +- drivers/media/platform/vsp1/vsp1_drm.c | 20 ++++ drivers/media/platform/vsp1/vsp1_drv.c | 5 +- drivers/media/platform/vsp1/vsp1_entity.c | 15 +-- drivers/media/platform/vsp1/vsp1_entity.h | 3 +- drivers/media/platform/vsp1/vsp1_histo.c | 2 +- drivers/media/platform/vsp1/vsp1_hsit.c | 2 +- drivers/media/platform/vsp1/vsp1_lif.c | 2 +- drivers/media/platform/vsp1/vsp1_lut.c | 2 +- drivers/media/platform/vsp1/vsp1_rpf.c | 2 +- drivers/media/platform/vsp1/vsp1_rwpf.c | 15 ++- drivers/media/platform/vsp1/vsp1_rwpf.h | 2 + drivers/media/platform/vsp1/vsp1_sru.c | 2 +- drivers/media/platform/vsp1/vsp1_uds.c | 2 +- drivers/media/platform/vsp1/vsp1_video.c | 172 +++++++++++++++++++++++++++--- drivers/media/platform/vsp1/vsp1_video.h | 5 + drivers/media/platform/vsp1/vsp1_wpf.c | 23 +++- 19 files changed, 238 insertions(+), 41 deletions(-) -- 2.7.4
