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authorAndrew F. Davis <afd@ti.com>2016-05-01 15:37:00 -0500
committerJonathan Cameron <jic23@kernel.org>2016-05-04 11:11:30 +0100
commit1276187c5261217aa9cc23ec153e0e903181c16b (patch)
treea2daeddaf3ecdf4b76dd888ef2fdc29904e3a8ec /Documentation/ABI
parentb36e8257641a043764c62240316610c81e36376c (diff)
downloadop-kernel-dev-1276187c5261217aa9cc23ec153e0e903181c16b.zip
op-kernel-dev-1276187c5261217aa9cc23ec153e0e903181c16b.tar.gz
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')
-rw-r--r--Documentation/ABI/testing/sysfs-bus-iio-health-afe440x19
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 a067073..6adba90 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:
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