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    Subject[RFC 0/4] IIO: add support for INA2xx power monitor
    Date
    This chip has fair support in the hwmon stack already, this work is more
    as a pathfinder for me, hence I post it as RFC to digg some more into 'does
    and donts' with IIO.

    Nevertheless, it provides a working streaming scheme for capturing
    power/voltage/current with this chip. It works in local and remote
    mode with iio_readdev and I did some sniffing tests with iio-oscilloscope
    with promising results inspite of timeout issues for long temporal buffers
    presumably due to the slow rates for this chip compared to expected high-speed
    CoDecs (and maybe the lack of a proper plugin?).

    The kthread I'm using does an active waiting to allow for sampling periods
    shorter than a tick. I have not experienced performance issues with it on
    the board (BeagleBoneBlack), IIOD could always schedule on time as far as I
    could see, maybe with other i2c backends a schedule() could be mandatory ?

    Many thanks,

    Marc Titinger (4):
    iio: ina2xx: add direct IO support for TI INA2xx Power Monitors
    iio: ina2xx: add SAMP_FREQ attribute.
    iio: ina2xx: add debugfs reg access
    iio: ina2xx: add SOFTWARE buffer mode using an iio kfifo.

    drivers/iio/adc/Kconfig | 11 +
    drivers/iio/adc/Makefile | 1 +
    drivers/iio/adc/ina2xx-iio.c | 579 +++++++++++++++++++++++++++++++++++++++++++
    3 files changed, 591 insertions(+)
    create mode 100644 drivers/iio/adc/ina2xx-iio.c

    --
    1.9.1



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