Hello, This patch series implements support for the Renesas R-Car VSP1 1-D and 2-D histogram generators (HGO and HGT). It is based on top of the VSP1 rotation patches and available for convenience at git://linuxtv.org/pinchartl/media.git vsp1-histogram-v3-20170228 The series starts with the implementation and documentation of the new V4L2 metadata API (1/8), followed by three VSP1 patches that add generic histogram support to the driver (2/8 to 4/8). Patches 5/8 and 7/8 then add new pixel formats for the R-Car VSP1 1-D and 2-D histograms, and patches 6/8 and 8/8 implement support for those histogram generators in the VSP1 driver. Laurent Pinchart (6): v4l: Add metadata buffer type and format v4l: vsp1: Add histogram support v4l: vsp1: Support histogram generators in pipeline configuration v4l: vsp1: Fix HGO and HGT routing register addresses v4l: Define a pixel format for the R-Car VSP1 1-D histogram engine v4l: vsp1: Add HGO support Niklas Söderlund (2): v4l: Define a pixel format for the R-Car VSP1 2-D histogram engine v4l: vsp1: Add HGT support Documentation/media/uapi/v4l/buffer.rst | 3 + Documentation/media/uapi/v4l/dev-meta.rst | 62 ++ Documentation/media/uapi/v4l/devices.rst | 1 + Documentation/media/uapi/v4l/meta-formats.rst | 16 + .../media/uapi/v4l/pixfmt-meta-vsp1-hgo.rst | 168 ++++++ .../media/uapi/v4l/pixfmt-meta-vsp1-hgt.rst | 120 ++++ Documentation/media/uapi/v4l/pixfmt.rst | 1 + Documentation/media/uapi/v4l/vidioc-querycap.rst | 3 + Documentation/media/videodev2.h.rst.exceptions | 2 + drivers/media/platform/Kconfig | 1 + drivers/media/platform/vsp1/Makefile | 1 + drivers/media/platform/vsp1/vsp1.h | 6 + drivers/media/platform/vsp1/vsp1_drm.c | 2 +- drivers/media/platform/vsp1/vsp1_drv.c | 70 ++- drivers/media/platform/vsp1/vsp1_entity.c | 154 ++++- drivers/media/platform/vsp1/vsp1_entity.h | 8 +- drivers/media/platform/vsp1/vsp1_hgo.c | 228 ++++++++ drivers/media/platform/vsp1/vsp1_hgo.h | 45 ++ drivers/media/platform/vsp1/vsp1_hgt.c | 222 +++++++ drivers/media/platform/vsp1/vsp1_hgt.h | 42 ++ drivers/media/platform/vsp1/vsp1_histo.c | 646 +++++++++++++++++++++ drivers/media/platform/vsp1/vsp1_histo.h | 84 +++ drivers/media/platform/vsp1/vsp1_pipe.c | 38 +- drivers/media/platform/vsp1/vsp1_pipe.h | 4 + drivers/media/platform/vsp1/vsp1_regs.h | 33 +- drivers/media/platform/vsp1/vsp1_video.c | 30 +- drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 19 + drivers/media/v4l2-core/v4l2-dev.c | 16 +- drivers/media/v4l2-core/v4l2-ioctl.c | 36 ++ drivers/media/v4l2-core/videobuf2-v4l2.c | 3 + include/media/v4l2-ioctl.h | 17 + include/trace/events/v4l2.h | 1 + include/uapi/linux/videodev2.h | 17 + 33 files changed, 2051 insertions(+), 48 deletions(-) create mode 100644 Documentation/media/uapi/v4l/dev-meta.rst create mode 100644 Documentation/media/uapi/v4l/meta-formats.rst create mode 100644 Documentation/media/uapi/v4l/pixfmt-meta-vsp1-hgo.rst create mode 100644 Documentation/media/uapi/v4l/pixfmt-meta-vsp1-hgt.rst create mode 100644 drivers/media/platform/vsp1/vsp1_hgo.c create mode 100644 drivers/media/platform/vsp1/vsp1_hgo.h create mode 100644 drivers/media/platform/vsp1/vsp1_hgt.c create mode 100644 drivers/media/platform/vsp1/vsp1_hgt.h create mode 100644 drivers/media/platform/vsp1/vsp1_histo.c create mode 100644 drivers/media/platform/vsp1/vsp1_histo.h -- Regards, Laurent Pinchart