Renesas VSP1 driver

Hello,

Here's the second version of the VSP1 engine (a Video Signal Processor found
in several Renesas R-Car SoCs) driver. Many thanks to Hans Verkuil for his
very quick review of v1.

The VSP1 is a video processing engine that includes a blender, scalers,
filters and statistics computation. Configurable data path routing logic
allows ordering the internal blocks in a flexible way, making this driver a
prime candidate for the media controller API.

Due to the configurable nature of the pipeline the driver doesn't use the V4L2
mem-to-mem framework, even though the device usually operates in memory to
memory mode.

Only the read pixel formatters, up/down scalers, write pixel formatters and
LCDC interface are supported at this stage.

The patch series starts with a fix for the media controller graph traversal
code, a documentation fix and new pixel format and media bus code definitions.
The last patch finally adds the VSP1 driver.

Changes since v1:

- Updated to the v3.11 media controller API changes
- Only add the LIF entity to the entities list when the LIF is present
- Added a MODULE_ALIAS()
- Fixed file descriptions in comment blocks
- Removed function prototypes for the unimplemented destroy functions
- Fixed a typo in the HST register name
- Fixed format propagation for the UDS entities
- Added v4l2_capability::device_caps support
- Prefix the device name with "platform:" in bus_info
- Zero the v4l2_pix_format priv field in the internal try format handler
- Use vb2_is_busy() instead of vb2_is_streaming() when setting the
  format
- Use the vb2_ioctl_* handlers where possible

Laurent Pinchart (5):
  media: Fix circular graph traversal
  v4l: Fix V4L2_MBUS_FMT_YUV10_1X30 media bus pixel code value
  v4l: Add media format codes for ARGB8888 and AYUV8888 on 32-bit busses
  v4l: Add V4L2_PIX_FMT_NV16M and V4L2_PIX_FMT_NV61M formats
  v4l: Renesas R-Car VSP1 driver

 Documentation/DocBook/media/v4l/pixfmt-nv16m.xml   |  170 +++
 Documentation/DocBook/media/v4l/pixfmt.xml         |    1 +
 Documentation/DocBook/media/v4l/subdev-formats.xml |  611 +++++------
 Documentation/DocBook/media_api.tmpl               |    6 +
 drivers/media/media-entity.c                       |   17 +-
 drivers/media/platform/Kconfig                     |   10 +
 drivers/media/platform/Makefile                    |    2 +
 drivers/media/platform/vsp1/Makefile               |    5 +
 drivers/media/platform/vsp1/vsp1.h                 |   73 ++
 drivers/media/platform/vsp1/vsp1_drv.c             |  487 +++++++++
 drivers/media/platform/vsp1/vsp1_entity.c          |  186 ++++
 drivers/media/platform/vsp1/vsp1_entity.h          |   68 ++
 drivers/media/platform/vsp1/vsp1_lif.c             |  237 ++++
 drivers/media/platform/vsp1/vsp1_lif.h             |   37 +
 drivers/media/platform/vsp1/vsp1_regs.h            |  581 ++++++++++
 drivers/media/platform/vsp1/vsp1_rpf.c             |  209 ++++
 drivers/media/platform/vsp1/vsp1_rwpf.c            |  124 +++
 drivers/media/platform/vsp1/vsp1_rwpf.h            |   53 +
 drivers/media/platform/vsp1/vsp1_uds.c             |  345 ++++++
 drivers/media/platform/vsp1/vsp1_uds.h             |   40 +
 drivers/media/platform/vsp1/vsp1_video.c           | 1129 ++++++++++++++++++++
 drivers/media/platform/vsp1/vsp1_video.h           |  144 +++
 drivers/media/platform/vsp1/vsp1_wpf.c             |  233 ++++
 include/linux/platform_data/vsp1.h                 |   25 +
 include/uapi/linux/v4l2-mediabus.h                 |    6 +-
 include/uapi/linux/videodev2.h                     |    2 +
 26 files changed, 4428 insertions(+), 373 deletions(-)
 create mode 100644 Documentation/DocBook/media/v4l/pixfmt-nv16m.xml
 create mode 100644 drivers/media/platform/vsp1/Makefile
 create mode 100644 drivers/media/platform/vsp1/vsp1.h
 create mode 100644 drivers/media/platform/vsp1/vsp1_drv.c
 create mode 100644 drivers/media/platform/vsp1/vsp1_entity.c
 create mode 100644 drivers/media/platform/vsp1/vsp1_entity.h
 create mode 100644 drivers/media/platform/vsp1/vsp1_lif.c
 create mode 100644 drivers/media/platform/vsp1/vsp1_lif.h
 create mode 100644 drivers/media/platform/vsp1/vsp1_regs.h
 create mode 100644 drivers/media/platform/vsp1/vsp1_rpf.c
 create mode 100644 drivers/media/platform/vsp1/vsp1_rwpf.c
 create mode 100644 drivers/media/platform/vsp1/vsp1_rwpf.h
 create mode 100644 drivers/media/platform/vsp1/vsp1_uds.c
 create mode 100644 drivers/media/platform/vsp1/vsp1_uds.h
 create mode 100644 drivers/media/platform/vsp1/vsp1_video.c
 create mode 100644 drivers/media/platform/vsp1/vsp1_video.h
 create mode 100644 drivers/media/platform/vsp1/vsp1_wpf.c
 create mode 100644 include/linux/platform_data/vsp1.h

-- 
Regards,

Laurent Pinchart

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