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[v1,0/5] media: Replace media graph walk in several drivers

Message ID 20221212141621.724-1-laurent.pinchart@ideasonboard.com
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Series media: Replace media graph walk in several drivers | expand

Message

Laurent Pinchart Dec. 12, 2022, 2:16 p.m. UTC 
Hello,

This patch series replaces the media graph walk API usage in several
drivers with iteration over entities or pads stored in the
media_pipeline object. Iteration over the constructed pipeline is more
efficient, and will support the V4L2 stream API correctly.

Patches 1/5 and 2/5 start by adding two macros to iterate over pads and
entities in a pipeline. Patch 2/5 also marks the media graph walk API as
deprecated as a result. Patches 3/5 to 5/5 then use the new iterators in
three drivers (omap3isp, omap4iss and xilinx).

With this series applied, only two drivers still use the media graph
walk API: exynos4-is and vsp1. Those are more difficult to address. I
plan to work on the vsp1 driver, but not on exynos4-is as I miss
knowledge of the code base and have no hardware to test changes on.
Volunteers would be appreciated :-)

Laurent Pinchart (5):
  media: mc: entity: Add pad iterator for media_pipeline
  media: mc: entity: Add entity iterator for media_pipeline
  media: ti: omap3isp: Use media_pipeline_for_each_entity()
  media: ti: omap4iss: Use media_pipeline_for_each_entity()
  media: xilinx: dma: Use media_pipeline_for_each_pad()

 drivers/media/mc/mc-entity.c                  | 55 +++++++++++
 drivers/media/platform/ti/omap3isp/ispvideo.c | 21 +---
 drivers/media/platform/xilinx/xilinx-dma.c    | 28 ++----
 drivers/staging/media/omap4iss/iss_video.c    | 56 +++--------
 include/media/media-entity.h                  | 98 +++++++++++++++++++
 5 files changed, 177 insertions(+), 81 deletions(-)


base-commit: 3178804c64ef7c8c87a53cd5bba0b2942dd64fec