Re: [v3 08/13] iio: document bno055 private sysfs attributes

Jonathan Cameron
2022-02-19T16:43:20Z

On Thu, 17 Feb 2022 17:27:05 +0100
Andrea Merello <andrea.merello@gmail.com> wrote:

> This patch adds ABI documentation for bno055 driver private sysfs
> attributes.
>
> Signed-off-by: Andrea Merello <andrea.merello@iit.it>
> ---
> .../ABI/testing/sysfs-bus-iio-bno055 | 81 +++++++++++++++++++
> 1 file changed, 81 insertions(+)
> create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-bno055
>
> diff --git a/Documentation/ABI/testing/sysfs-bus-iio-bno055 b/Documentation/ABI/testing/sysfs-bus-iio-bno055
> new file mode 100644
> index 000000000000..c239276f2b0f
> --- /dev/null
> +++ b/Documentation/ABI/testing/sysfs-bus-iio-bno055
> @@ -0,0 +1,81 @@
> +What: /sys/bus/iio/devices/iio:deviceX/in_accel_raw_range
> +KernelVersion: 5.17

Update this to 5.18 as hopefully we'll resolve remaining questions in
time to make the merge window.

> +Contact: linux-iio@vger.kernel.org
> +Description:
> + Range for acceleration readings in m/s^2.

If it is in m/s^2 then we need to not call it _raw_ as that implies application
of offset and scale. I didn't think this through in earlier discussion...

If it's in m/s^2 then in_accel_input_range would be appropriate.
Same for the other similar cases that follow.

> Note that this does
> + not affects the scale (which should be used when changing the
> + maximum and minimum readable value affects also the reading
> + scaling factor).
> +
> +What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_raw_range
> +KernelVersion: 5.17
> +Contact: linux-iio@vger.kernel.org
> +Description:
> + Range for angular velocity readings in radians per second. Note
> + that this does not affects the scale (which should be used when
> + changing the maximum and minimum readable value affects also the
> + reading scaling factor).
> +
> +What: /sys/bus/iio/devices/iio:deviceX/in_accel_raw_range_available
> +KernelVersion: 5.17
> +Contact: linux-iio@vger.kernel.org
> +Description:
> + List of allowed values for in_accel_raw_range attribute
> +
> +What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_raw_range_available
> +KernelVersion: 5.17
> +Contact: linux-iio@vger.kernel.org
> +Description:
> + List of allowed values for in_anglvel_raw_range attribute
> +
> +What: /sys/bus/iio/devices/iio:deviceX/in_magn_calibration_fast_enable
> +KernelVersion: 5.17
> +Contact: linux-iio@vger.kernel.org
> +Description:
> + Can be 1 or 0. Enables/disables the "Fast Magnetometer
> + Calibration" HW function.
> +
> +What: /sys/bus/iio/devices/iio:deviceX/fusion_enable
> +KernelVersion: 5.17
> +Contact: linux-iio@vger.kernel.org
> +Description:
> + Can be 1 or 0. Enables/disables the "sensor fusion" (a.k.a.
> + NDOF) HW function.
> +
> +What: /sys/bus/iio/devices/iio:deviceX/calibration_data
> +KernelVersion: 5.17
> +Contact: linux-iio@vger.kernel.org
> +Description:
> + Reports the binary calibration data blob for the IMU sensors.
> +
> +What: /sys/bus/iio/devices/iio:deviceX/in_accel_calibration_auto_status
> +KernelVersion: 5.17
> +Contact: linux-iio@vger.kernel.org
> +Description:
> + Reports the autocalibration status for the accelerometer sensor.
> + Can be 0 (calibration non even enabled) or 1 to 5 where the greater
> + the number, the better the calibration status.
> +
> +What: /sys/bus/iio/devices/iio:deviceX/in_gyro_calibration_auto_status
> +KernelVersion: 5.17
> +Contact: linux-iio@vger.kernel.org
> +Description:
> + Reports the autocalibration status for the gyroscope sensor.
> + Can be 0 (calibration non even enabled) or 1 to 5 where the greater
> + the number, the better the calibration status.
> +
> +What: /sys/bus/iio/devices/iio:deviceX/in_magn_calibration_auto_status
> +KernelVersion: 5.17
> +Contact: linux-iio@vger.kernel.org
> +Description:
> + Reports the autocalibration status for the magnetometer sensor.
> + Can be 0 (calibration non even enabled) or 1 to 5 where the greater
> + the number, the better the calibration status.
> +
> +What: /sys/bus/iio/devices/iio:deviceX/sys_calibration_auto_status
> +KernelVersion: 5.17
> +Contact: linux-iio@vger.kernel.org
> +Description:
> + Reports the status for the IMU overall autocalibration.
> + Can be 0 (calibration non even enabled) or 1 to 5 where the greater
> + the number, the better the calibration status.