[PATCH v9 06/11] counter: 104-quad-8: Documentation: Add Generic Counter sysfs documentation
From: William Breathitt Gray <hidden>
Date: 2018-07-22 22:51:23
Also in:
linux-devicetree, linux-iio, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
This patch adds standard documentation for the Generic Counter interface userspace sysfs attributes of the 104-QUAD-8 driver. Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: William Breathitt Gray <redacted> --- .../ABI/testing/sysfs-bus-counter-104-quad-8 | 36 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 37 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-counter-104-quad-8
diff --git a/Documentation/ABI/testing/sysfs-bus-counter-104-quad-8 b/Documentation/ABI/testing/sysfs-bus-counter-104-quad-8
new file mode 100644
index 000000000000..2d9fa57af101
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-counter-104-quad-8@@ -0,0 +1,36 @@ +What: /sys/bus/counter/devices/counterX/signalY/index_polarity +KernelVersion: 4.19 +Contact: linux-iio at vger.kernel.org +Description: + Active level of index input Signal Y; irrelevant in + non-synchronous load mode. + +What: /sys/bus/counter/devices/counterX/signalY/index_polarity_available +What: /sys/bus/counter/devices/counterX/signalY/synchronous_mode_available +KernelVersion: 4.19 +Contact: linux-iio at vger.kernel.org +Description: + Discrete set of available values for the respective Signal Y + configuration are listed in this file. + +What: /sys/bus/counter/devices/counterX/signalY/synchronous_mode +KernelVersion: 4.19 +Contact: linux-iio at vger.kernel.org +Description: + Configure the counter associated with Signal Y for + non-synchronous or synchronous load mode. Synchronous load mode + cannot be selected in non-quadrature (Pulse-Direction) clock + mode. + + non-synchronous: + A logic low level is the active level at this index + input. The index function (as enabled via preset_enable) + is performed directly on the active level of the index + input. + + synchronous: + Intended for interfacing with encoder Index output in + quadrature clock mode. The active level is configured + via index_polarity. The index function (as enabled via + preset_enable) is performed synchronously with the + quadrature clock on the active level of the index input.
diff --git a/MAINTAINERS b/MAINTAINERS
index f41c45246e2b..865c47a3feae 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS@@ -270,6 +270,7 @@ ACCES 104-QUAD-8 DRIVER M: William Breathitt Gray <vilhelm.gray@gmail.com> L: linux-iio at vger.kernel.org S: Maintained +F: Documentation/ABI/testing/sysfs-bus-counter-104-quad-8 F: Documentation/ABI/testing/sysfs-bus-iio-counter-104-quad-8 F: drivers/counter/104-quad-8.c
--
2.18.0