iio: core: introduce IIO_CHAN_INFO_HARDWAREGAIN
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 2ce4dad..5bc8a47 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -280,6 +280,13 @@
If a discrete set of scale values are available, they
are listed in this attribute.
+What /sys/bus/iio/devices/iio:deviceX/out_voltageY_hardwaregain
+KernelVersion: 2.6.35
+Contact: linux-iio@vger.kernel.org
+Description:
+ Hardware applied gain factor. If shared across all channels,
+ <type>_hardwaregain is used.
+
What: /sys/.../in_accel_filter_low_pass_3db_frequency
What: /sys/.../in_magn_filter_low_pass_3db_frequency
What: /sys/.../in_anglvel_filter_low_pass_3db_frequency
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index 425cd4c..86f3460 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -91,6 +91,7 @@
[IIO_CHAN_INFO_SAMP_FREQ] = "sampling_frequency",
[IIO_CHAN_INFO_FREQUENCY] = "frequency",
[IIO_CHAN_INFO_PHASE] = "phase",
+ [IIO_CHAN_INFO_HARDWAREGAIN] = "hardwaregain",
};
const struct iio_chan_spec
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index 6fdbdb8..897c6b01 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -34,6 +34,7 @@
IIO_CHAN_INFO_SAMP_FREQ,
IIO_CHAN_INFO_FREQUENCY,
IIO_CHAN_INFO_PHASE,
+ IIO_CHAN_INFO_HARDWAREGAIN,
};
#define IIO_CHAN_INFO_SHARED_BIT(type) BIT(type*2)
@@ -95,6 +96,10 @@
IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_PHASE)
#define IIO_CHAN_INFO_PHASE_SHARED_BIT \
IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_PHASE)
+#define IIO_CHAN_INFO_HARDWAREGAIN_SEPARATE_BIT \
+ IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_HARDWAREGAIN)
+#define IIO_CHAN_INFO_HARDWAREGAIN_SHARED_BIT \
+ IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_HARDWAREGAIN)
enum iio_endian {
IIO_CPU,