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authorWilliam Breathitt Gray <william.gray@linaro.org>2022-09-27 18:53:40 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2022-09-30 14:32:35 +0200
commit45d2918520b2d8e640e4fb3fbf664dfb823dc520 (patch)
tree94e9ccceeb8ef6f7ea716ead09f4a929fef8a70c /Documentation/ABI
parent9830288aeada5ec8ded1665aafe2d2b8f4121bad (diff)
downloadlinux-45d2918520b2d8e640e4fb3fbf664dfb823dc520.tar.gz
counter: Introduce the Count capture component
Some devices provide a latch function to save historic Count values.
This patch standardizes exposure of such functionality as Count capture
components. A COUNTER_COMP_CAPTURE macro is provided for driver authors
to define a capture component. A new event COUNTER_EVENT_CAPTURE is
introduced to represent Count value capture events.

Cc: Julien Panis <jpanis@baylibre.com>
Link: https://lore.kernel.org/r/c239572ab4208d0d6728136e82a88ad464369a7a.1664204990.git.william.gray@linaro.org/
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>
Link: https://lore.kernel.org/r/3cebaa0b807a225eb277d771504fe6dba7269ffd.1664318353.git.william.gray@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/ABI')
-rw-r--r--Documentation/ABI/testing/sysfs-bus-counter7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-counter b/Documentation/ABI/testing/sysfs-bus-counter
index 2a996deabe9e..3eb6b063970a 100644
--- a/Documentation/ABI/testing/sysfs-bus-counter
+++ b/Documentation/ABI/testing/sysfs-bus-counter
@@ -4,6 +4,12 @@ Contact:	linux-iio@vger.kernel.org
 Description:
 		Count data of Count Y represented as a string.
 
+What:		/sys/bus/counter/devices/counterX/countY/capture
+KernelVersion:	6.1
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Historical capture of the Count Y count data.
+
 What:		/sys/bus/counter/devices/counterX/countY/ceiling
 KernelVersion:	5.2
 Contact:	linux-iio@vger.kernel.org
@@ -203,6 +209,7 @@ Description:
 		both edges:
 			Any state transition.
 
+What:		/sys/bus/counter/devices/counterX/countY/capture_component_id
 What:		/sys/bus/counter/devices/counterX/countY/ceiling_component_id
 What:		/sys/bus/counter/devices/counterX/countY/floor_component_id
 What:		/sys/bus/counter/devices/counterX/countY/count_mode_component_id