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SubjectRe: [PATCH 6/8] docs: counter: add latch_mode and latched_count sysfs attributes
On Sat, 16 Oct 2021 20:33:41 -0500
David Lechner <david@lechnology.com> wrote:

> This documents new counterX/latch_mode* and
> counterX/countY/latched_count* attributes.
>
> The counterX/signalY/*_available are moved to the
> counterX/countY/*_available section similar to the way we already have
> The counterX/*_component_id and The counterX/signalY/*_component_id
> grouped together so that we don't have to start a 3rd redundant section
> for device-level *_available section.

Two unrelated changes in the same patch. Please redo this as multiple patches.

Thanks,

Jonathan

>
> Signed-off-by: David Lechner <david@lechnology.com>
> ---
> Documentation/ABI/testing/sysfs-bus-counter | 39 ++++++++++++++++-----
> 1 file changed, 30 insertions(+), 9 deletions(-)
>
> diff --git a/Documentation/ABI/testing/sysfs-bus-counter b/Documentation/ABI/testing/sysfs-bus-counter
> index 37d960a8cb1b..78bb1a501007 100644
> --- a/Documentation/ABI/testing/sysfs-bus-counter
> +++ b/Documentation/ABI/testing/sysfs-bus-counter
> @@ -59,10 +59,13 @@ What: /sys/bus/counter/devices/counterX/countY/error_noise_available
> What: /sys/bus/counter/devices/counterX/countY/function_available
> What: /sys/bus/counter/devices/counterX/countY/prescaler_available
> What: /sys/bus/counter/devices/counterX/countY/signalZ_action_available
> +What: /sys/bus/counter/devices/counterX/latch_mode_available
> +What: /sys/bus/counter/devices/counterX/signalY/index_polarity_available
> +What: /sys/bus/counter/devices/counterX/signalY/synchronous_mode_available
> KernelVersion: 5.2
> Contact: linux-iio@vger.kernel.org
> Description:
> - Discrete set of available values for the respective Count Y
> + Discrete set of available values for the respective component
> configuration are listed in this file. Values are delimited by
> newline characters.
>
> @@ -147,6 +150,14 @@ Description:
> updates the respective count. Quadrature encoding
> determines the direction.
>
> +What: /sys/bus/counter/devices/counterX/countY/latched_count
> +KernelVersion: 5.16
> +Contact: linux-iio@vger.kernel.org
> +Description:
> + Latched count data of Count Y represented as a string. The value
> + is latched in based on the trigger selected by the
> + counterX/latch_mode attribute.
> +
> What: /sys/bus/counter/devices/counterX/countY/name
> KernelVersion: 5.2
> Contact: linux-iio@vger.kernel.org
> @@ -209,6 +220,7 @@ What: /sys/bus/counter/devices/counterX/countY/count_mode_component_id
> What: /sys/bus/counter/devices/counterX/countY/direction_component_id
> What: /sys/bus/counter/devices/counterX/countY/enable_component_id
> What: /sys/bus/counter/devices/counterX/countY/error_noise_component_id
> +What: /sys/bus/counter/devices/counterX/countY/latched_count_component_id
> What: /sys/bus/counter/devices/counterX/countY/prescaler_component_id
> What: /sys/bus/counter/devices/counterX/countY/preset_component_id
> What: /sys/bus/counter/devices/counterX/countY/preset_enable_component_id
> @@ -218,6 +230,7 @@ What: /sys/bus/counter/devices/counterX/signalY/cable_fault_enable_component_id
> What: /sys/bus/counter/devices/counterX/signalY/filter_clock_prescaler_component_id
> What: /sys/bus/counter/devices/counterX/signalY/index_polarity_component_id
> What: /sys/bus/counter/devices/counterX/signalY/synchronous_mode_component_id
> +What: /sys/bus/counter/devices/latch_mode_component_id
> What: /sys/bus/counter/devices/unit_timer_enable_component_id
> What: /sys/bus/counter/devices/unit_timer_period_component_id
> What: /sys/bus/counter/devices/unit_timer_time_component_id
> @@ -244,6 +257,22 @@ Description:
> counter_event data structures. The number of elements will be
> rounded-up to a power of 2.
>
> +What: /sys/bus/counter/devices/counterX/latch_mode
> +KernelVersion: 5.16
> +Contact: linux-iio@vger.kernel.org
> +Description:
> + Read/write attribute that selects the trigger for latching
> + values. Valid values are device-specific (given by
> + latch_mode_available attribute) and may include:
> +
> + "Read count":
> + Reading the countY/count attribute latches values.
> +
> + "Unit timeout":
> + Unit timer timeout event latches values.
> +
> + The latched values can be read from latched_* attributes.
> +
> What: /sys/bus/counter/devices/counterX/name
> KernelVersion: 5.2
> Contact: linux-iio@vger.kernel.org
> @@ -298,14 +327,6 @@ 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: 5.2
> -Contact: linux-iio@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/name
> KernelVersion: 5.2
> Contact: linux-iio@vger.kernel.org

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