This patch adds standard documentation for the userspace sysfs
attributes of the Generic Counter interface.

Signed-off-by: William Breathitt Gray <[email protected]>
---
 .../ABI/testing/sysfs-bus-counter-generic-sysfs    | 73 ++++++++++++++++++++++
 MAINTAINERS                                        |  1 +
 2 files changed, 74 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-counter-generic-sysfs

diff --git a/Documentation/ABI/testing/sysfs-bus-counter-generic-sysfs 
b/Documentation/ABI/testing/sysfs-bus-counter-generic-sysfs
new file mode 100644
index 000000000000..3b1c3c4498d1
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-counter-generic-sysfs
@@ -0,0 +1,73 @@
+What:          /sys/bus/counter/devices/counterX/countY
+KernelVersion: 4.16
+Contact:       [email protected]
+Description:
+               Count data of Count Y. Typically, this is an accumulated count
+               value.
+
+What:          /sys/bus/counter/devices/counterX/countY_function
+KernelVersion: 4.16
+Contact:       [email protected]
+Description:
+               Count function mode of Count Y; count function evaluation is
+               triggered by conditions specified by the countY_signalZ_action
+               attributes.
+
+What:          /sys/bus/counter/devices/counterX/countY_function_available
+KernelVersion: 4.16
+Contact:       [email protected]
+Description:
+               Discrete set of available count function modes for the
+               configuration of the respective Count Y are listed in this file.
+
+What:          /sys/bus/counter/devices/counterX/countY_name
+KernelVersion: 4.16
+Contact:       [email protected]
+Description:
+               Read-only attribute that indicates the device-specific name of
+               Count Y.
+
+What:          /sys/bus/counter/devices/counterX/countY_signalZ_action
+KernelVersion: 4.16
+Contact:       [email protected]
+Description:
+               Action mode of Count Y for Signal Z. This attribute indicates
+               the condition of Signal Z that triggers the count function
+               evaluation for Count Y.
+
+What:          
/sys/bus/counter/devices/counterX/countY_signalZ_action_available
+KernelVersion: 4.16
+Contact:       [email protected]
+Description:
+               Discrete set of available action modes are listed in this file
+               for the configuration of the respective Synapse associating
+               Signal Z to Count Y.
+
+What:          /sys/bus/counter/devices/counterX/counter_name
+KernelVersion: 4.16
+Contact:       [email protected]
+Description:
+               Read-only attribute that indicates the device-specific name of
+               the Counter.
+
+What:          /sys/bus/counter/devices/counterX/signalY
+KernelVersion: 4.16
+Contact:       [email protected]
+Description:
+               Signal data of Signal Y. Typically, this is an input line level
+               state.
+
+What:          /sys/bus/counter/devices/counterX/signalY_name
+KernelVersion: 4.16
+Contact:       [email protected]
+Description:
+               Read-only attribute that indicates the device-specific name of
+               Signal Y.
+
+What:          /sys/bus/counter/devices/counterX/countY_synapses
+KernelVersion: 4.16
+Contact:       [email protected]
+Description:
+               List of Synapses associating Signals to Count Y. The columns
+               represent the following in the respective order: Signal ID,
+               Signal name, and current action mode.
diff --git a/MAINTAINERS b/MAINTAINERS
index 07dd7b933bfa..38da1bc615b3 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3665,6 +3665,7 @@ COUNTER INTERFACE
 M:     William Breathitt Gray <[email protected]>
 L:     [email protected]
 S:     Maintained
+F:     Documentation/ABI/testing/sysfs-bus-counter-*
 F:     drivers/iio/counter/
 F:     include/linux/iio/counter.h
 
-- 
2.15.1

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