linux-kernel - [PATCH v5 7/8] counter: stm32-timer-cnt: Add sysfs documentation

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Message-Id: <d85788df126b716b05fe1d56fca292933fee1db2.1520614431.git.vilhelm.gray@gmail.com>
Date:   Fri,  9 Mar 2018 13:43:44 -0500
From:   William Breathitt Gray <vilhelm.gray@...il.com>
To:     jic23@...nel.org, knaack.h@....de, lars@...afoo.de,
        pmeerw@...erw.net
Cc:     benjamin.gaignard@...com, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        William Breathitt Gray <vilhelm.gray@...il.com>
Subject: [PATCH v5 7/8] counter: stm32-timer-cnt: Add sysfs documentation

From: Benjamin Gaignard <benjamin.gaignard@...com>

In addition of the generic sysfs-bus-counter ABI stm32-timer-cnt
offerts three functionality:
- enable the counter
- set preset value
- allow to read counter direction

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...com>
Signed-off-by: William Breathitt Gray <vilhelm.gray@...il.com>
---
 .../ABI/testing/sysfs-bus-counter-stm32-timer-cnt   | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-counter-stm32-timer-cnt

diff --git a/Documentation/ABI/testing/sysfs-bus-counter-stm32-timer-cnt b/Documentation/ABI/testing/sysfs-bus-counter-stm32-timer-cnt
new file mode 100644
index 000000000000..73328e8e6d7e
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-counter-stm32-timer-cnt
@@ -0,0 +1,21 @@
+What:		/sys/bus/counter/devices/counterX/countY_direction
+KernelVersion:	4.17
+Contact:	linux-iio@...r.kernel.org
+Description:
+		Read-only attribute that indicates the count direction of
+		Count Y. Two count directions are available: Forward and
+		Backward.
+
+What:		/sys/bus/counter/devices/counterX/countY_enable
+KernelVersion:	4.17
+Contact:	linux-iio@...r.kernel.org
+Description:
+		Whether channel Y inputs A and B are enabled. Valid attribute
+		values are boolean.
+
+What:		/sys/bus/counter/devices/counterX/countY_preset
+KernelVersion:	4.17
+Contact:	linux-iio@...r.kernel.org
+Description:
+		If the counter device supports preset registers, the preset
+		count for channel Y is provided by this attribute.
-- 
2.16.2