Add support for max_sampling_frequency, this will help user to
set sampling frequency to an acceptable range.
Signed-off-by: Song Hongyan <hongyan.song@xxxxxxxxx>
---
Documentation/ABI/testing/sysfs-bus-iio | 7 +++++++
drivers/iio/industrialio-core.c | 1 +
include/linux/iio/iio.h | 1 +
3 files changed, 9 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
index 60b7406..cbcd2b8 100644
--- a/Documentation/ABI/testing/sysfs-bus-iio
+++ b/Documentation/ABI/testing/sysfs-bus-iio
@@ -54,6 +54,13 @@ Description:
relevant directories. If it effects all of the above
then it is to be found in the base device directory.
+What: /sys/bus/iio/devices/iio:deviceX/max_sampling_frequency
+KernelVersion: 4.11
+Contact: linux-iio@xxxxxxxxxxxxxxx
+Description:
+ This parameter shows the max sampling frequency, which can
+ help user to set sampling frequency to an acceptable range.
+
What: /sys/bus/iio/devices/iio:deviceX/sampling_frequency_available
What: /sys/.../iio:deviceX/buffer/sampling_frequency_available
What: /sys/bus/iio/devices/triggerX/sampling_frequency_available
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index 72fc96a..5203e75 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -140,6 +140,7 @@ struct bus_type iio_bus_type = {
[IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY]
= "filter_high_pass_3db_frequency",
[IIO_CHAN_INFO_SAMP_FREQ] = "sampling_frequency",
+ [IIO_CHAN_INFO_MAX_SAMP_FREQ] = "max_sampling_frequency",
[IIO_CHAN_INFO_FREQUENCY] = "frequency",
[IIO_CHAN_INFO_PHASE] = "phase",
[IIO_CHAN_INFO_HARDWAREGAIN] = "hardwaregain",
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
index b4a0679..f9eba2e 100644
--- a/include/linux/iio/iio.h
+++ b/include/linux/iio/iio.h
@@ -34,6 +34,7 @@ enum iio_chan_info_enum {
IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY,
IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY,
IIO_CHAN_INFO_SAMP_FREQ,
+ IIO_CHAN_INFO_MAX_SAMP_FREQ,
IIO_CHAN_INFO_FREQUENCY,
IIO_CHAN_INFO_PHASE,
IIO_CHAN_INFO_HARDWAREGAIN,
--
1.9.1
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