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    Subject[PATCH 0/4] media: platform: Add Aspeed Video Engine driver
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    The Video Engine (VE) embedded in the Aspeed AST2400 and AST2500 SOCs
    can capture and compress video data from digital or analog sources. With
    the Aspeed chip acting as a service processor, the Video Engine can
    capture the host processor graphics output.

    This series adds a V4L2 driver for the VE, providing a read() interface
    only. The driver triggers the hardware to capture the host graphics output
    and compress it to JPEG format.

    Testing on an AST2500 determined that the videobuf/streaming/mmap interface
    was significantly slower than the simple read() interface, so I have not
    included the streaming part.

    It's also possible to use an automatic mode for the VE such that
    re-triggering the HW every frame isn't necessary. However this wasn't
    reliable on the AST2400, and probably used more CPU anyway due to excessive
    interrupts. It was approximately 15% faster.

    The series also adds the necessary parent clock definitions to the Aspeed
    clock driver, with both a mux and clock divider.

    Eddie James (4):
    clock: aspeed: Add VIDEO reset index definition
    clock: aspeed: Setup video engine clocking
    dt-bindings: media: Add Aspeed Video Engine binding documentation
    media: platform: Add Aspeed Video Engine driver

    .../devicetree/bindings/media/aspeed-video.txt | 23 +
    drivers/clk/clk-aspeed.c | 41 +-
    drivers/media/platform/Kconfig | 8 +
    drivers/media/platform/Makefile | 1 +
    drivers/media/platform/aspeed-video.c | 1307 ++++++++++++++++++++
    include/dt-bindings/clock/aspeed-clock.h | 1 +
    6 files changed, 1379 insertions(+), 2 deletions(-)
    create mode 100644 Documentation/devicetree/bindings/media/aspeed-video.txt
    create mode 100644 drivers/media/platform/aspeed-video.c

    --
    1.8.3.1

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