diff options
| author | Matt Fornero <matt.fornero@mathworks.com> | 2017-12-06 14:43:30 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-01-08 16:03:41 +0100 |
| commit | 350f6c75f6933d5d58548d68f9336543c56b4a02 (patch) | |
| tree | 056a75fe99ad2653d510bc2892574f5e6e1d3c70 /Documentation/ABI/testing/sysfs-bus-iio | |
| parent | 80e3f0103e126060721d96074ec6c1d252af23b9 (diff) | |
iio: buffer: Expose data available
Add a sysfs attribute that exposes buffer data available to userspace.
This attribute can be checked at runtime to determine the overall buffer
fill level (across all allocated buffers).
Signed-off-by: Matt Fornero <matt.fornero@mathworks.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-bus-iio')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-iio | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio index a478740e2783..9cc0ea1c0273 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio +++ b/Documentation/ABI/testing/sysfs-bus-iio @@ -1413,6 +1413,16 @@ Description: the available samples after the timeout expires and thus have a maximum delay guarantee. +What: /sys/bus/iio/devices/iio:deviceX/buffer/data_available +KernelVersion: 4.16 +Contact: linux-iio@vger.kernel.org +Description: + A read-only value indicating the bytes of data available in the + buffer. In the case of an output buffer, this indicates the + amount of empty space available to write data to. In the case of + an input buffer, this indicates the amount of data available for + reading. + What: /sys/bus/iio/devices/iio:deviceX/buffer/hwfifo_enabled KernelVersion: 4.2 Contact: linux-iio@vger.kernel.org |