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    Subject[PATCH v2 12/14] staging: iio: ad7746: Add ABI documentation
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    The use cases for this driver don't comply with the current ABI. The
    ad7746 and ad7152 need an external capacitance or voltage reference to
    automatically calibrate themselves which is not the normal use case of
    the calibscale and calibbias ABIs, a new ABI was needed.

    Signed-off-by: Hernán Gonzalez <hernan@vanguardiasur.com.ar>
    ---
    Documentation/ABI/testing/sysfs-bus-iio-ad7746 | 17 +++++++++++++++++
    1 file changed, 17 insertions(+)
    create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-ad7746

    diff --git a/Documentation/ABI/testing/sysfs-bus-iio-ad7746 b/Documentation/ABI/testing/sysfs-bus-iio-ad7746
    new file mode 100644
    index 0000000..96a41b7
    --- /dev/null
    +++ b/Documentation/ABI/testing/sysfs-bus-iio-ad7746
    @@ -0,0 +1,17 @@
    +What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceX_calibscale_calibration
    +What: /sys/bus/iio/devices/iio:deviceX/in_voltage0_calibscale_calibration
    +KernelVersion: 4.17.0
    +Contact: linux-iio@vger.kernel.org
    +Description:
    + Enter gain calibration mode, in which a full-scale
    + {capacitance, voltage reference} must be connected to the
    + {capacitance, voltage} input beforehand to automatically
    + calibrate the device.
    +
    +What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceX_calibbias_calibration
    +KernelVersion: 4.17.0
    +Contact: linux-iio@vger.kernel.org
    +Description:
    + Enter offset calibration mode, in which a zero-scale
    + capacitance must be connected to the capacitance input
    + beforehand to automatically calibrate the device.
    --
    2.7.4
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