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| author | Andrew F. Davis <afd@ti.com> | 2016-05-01 15:37:00 -0500 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2016-05-04 11:11:30 +0100 |
| commit | 1276187c5261217aa9cc23ec153e0e903181c16b (patch) | |
| tree | a2daeddaf3ecdf4b76dd888ef2fdc29904e3a8ec /Documentation/ABI/testing/sysfs-bus-iio-health-afe440x | |
| parent | b36e8257641a043764c62240316610c81e36376c (diff) | |
| download | blackbird-op-linux-1276187c5261217aa9cc23ec153e0e903181c16b.tar.gz blackbird-op-linux-1276187c5261217aa9cc23ec153e0e903181c16b.zip | |
iio: health/afe440x: Make gain settings a modifier for the stages
Currently the TIA gain settings are exported to userspace as sysfs
entries that do not clearly represent their internal relation to the
sampling stages. The gain settings are enabled on a per-stage basis,
this can be seen in figure 24 of the current AFE4404 datasheet.
These gain settings should therefore be tied to the channels that are
read during these stages. Make this change here.
Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-bus-iio-health-afe440x')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-iio-health-afe440x | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-iio-health-afe440x b/Documentation/ABI/testing/sysfs-bus-iio-health-afe440x index a06707320d84..6adba9058b22 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio-health-afe440x +++ b/Documentation/ABI/testing/sysfs-bus-iio-health-afe440x @@ -1,13 +1,3 @@ -What: /sys/bus/iio/devices/iio:deviceX/tia_resistanceY - /sys/bus/iio/devices/iio:deviceX/tia_capacitanceY -Date: December 2015 -KernelVersion: -Contact: Andrew F. Davis <afd@ti.com> -Description: - Get and set the resistance and the capacitance settings for the - Transimpedance Amplifier. Y is 1 for Rf1 and Cf1, Y is 2 for - Rf2 and Cf2 values. - What: /sys/bus/iio/devices/iio:deviceX/in_intensityY_raw Date: May 2016 KernelVersion: @@ -33,6 +23,15 @@ Description: Get and set the offset cancellation DAC setting for these stages. The values are expressed in 5-bit sign-magnitude. +What: /sys/bus/iio/devices/iio:deviceX/in_intensityY_resistance +What: /sys/bus/iio/devices/iio:deviceX/in_intensityY_capacitance +Date: May 2016 +KernelVersion: +Contact: Andrew F. Davis <afd@ti.com> +Description: + Get and set the resistance and the capacitance settings for the + Transimpedance Amplifier during the associated stage. + What: /sys/bus/iio/devices/iio:deviceX/out_currentY_raw Date: May 2016 KernelVersion: |
