From: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
Signed-off-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
---
drivers/staging/iio/Documentation/sysfs-bus-iio | 16 ++++++++++++++++
drivers/staging/iio/iio.h | 2 ++
drivers/staging/iio/industrialio-core.c | 1 +
3 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/drivers/staging/iio/Documentation/sysfs-bus-iio b/drivers/staging/iio/Documentation/sysfs-bus-iio
index 1d52c96..12e70be 100644
--- a/drivers/staging/iio/Documentation/sysfs-bus-iio
+++ b/drivers/staging/iio/Documentation/sysfs-bus-iio
@@ -201,6 +201,22 @@ Description:
for variation between different instances of the part, typically
adjusted by using some hardware supported calibration procedure.
+What: /sys/bus/iio/devices/iio:deviceX/in_capacitanceY_bias
+KernelVersion: 3.1.0
+Contact: linux-iio@xxxxxxxxxxxxxxx
+Description:
+ If known for a device, offset/bias to be added to <type>[Y]_raw
+ post to scaling by <type>[Y]_scale in order to obtain value in
+ the <type> units as specified in <type>[y]_raw documentation.
+ Not present if the bias/offset is always 0 or unknown.
+ If Y is not present, then the bias/offset applies to all in
+ channels of <type>. May be writable if a variable offset bias
+ can be applied on the device. Note that this is different to
+ calibbias which is for devices (or drivers) that apply offsets
+ to compensate for variation between different instances of the
+ part, typically adjusted by using some hardware supported
+ calibration procedure.
+
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_scale
What: /sys/bus/iio/devices/iio:deviceX/in_voltageY_supply_scale
What: /sys/bus/iio/devices/iio:deviceX/in_voltage_scale
diff --git a/drivers/staging/iio/iio.h b/drivers/staging/iio/iio.h
index 8ef04f8..06527ba 100644
--- a/drivers/staging/iio/iio.h
+++ b/drivers/staging/iio/iio.h
@@ -83,6 +83,8 @@ enum iio_chan_info_enum {
IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW_SEPARATE,
IIO_CHAN_INFO_AVERAGE_RAW_SHARED,
IIO_CHAN_INFO_AVERAGE_RAW_SEPARATE,
+ IIO_CHAN_INFO_BIAS_SHARED,
+ IIO_CHAN_INFO_BIAS_SEPARATE,
};
enum iio_endian {
diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c
index fd4aada..5e9a65d 100644
--- a/drivers/staging/iio/industrialio-core.c
+++ b/drivers/staging/iio/industrialio-core.c
@@ -86,6 +86,7 @@ static const char * const iio_chan_info_postfix[] = {
[IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW_SHARED/2]
= "quadrature_correction_raw",
[IIO_CHAN_INFO_AVERAGE_RAW_SHARED/2] = "mean_raw",
+ [IIO_CHAN_INFO_BIAS_SHARED/2] = "bias",
};
/**
--
1.7.0.4
--
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