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SubjectRe: [PATCH 0/2] Add Updown Counter support for Milbeaut M10V SoC
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Hi William,

On 2019/03/31 11:09, William Breathitt Gray wrote:
> On Sat, Mar 30, 2019 at 06:36:03PM +0000, Jonathan Cameron wrote:
>> On Tue, 26 Mar 2019 15:32:34 +0900
>> Shinji Kanematsu <kanematsu.shinji@socionext.com> wrote:
>>
>>> This is a series of patch which adds Updown Counter support on
>>> Milbeaut M10V SoC.
>>>
>>> The Updown Counter counts input pulse signal from external quadrature encoder.
>>> It also has input pulse signal counter function.
>> Hi Shinji,
>>
>> Are you aware of the counter subsystem that has been proposed (and
>> as far as I am concerned is ready to be merged)?
>>
>> https://patchwork.kernel.org/project/linux-iio/list/?series=147
>> (I think that's the latest version posted)..
>> William, perhaps you could give an update?
>>
>> (bad luck, you are getting popular ;)
>>
>> I'll take a quick review as it stands, as some issues may carry over.
>> I appreciate that it's always unfortunate to try to upstream stuff at the
>> same time as a new framework is being developed / upstreamed, but I don't
>> intend to take any additional counter drivers into IIO. We just
>> end up having to maintain old interfaces in more and more drivers.
>>
>> Thanks,
>>
>> Jonathan
>
> Shinji,
>
> If you reimplement this driver to use the new Generic Counter API, I can
> pick it up and include it with my next patchset submission. Please base
> your patches ontop of the "generic_counter_v10" branch from my personal
> repository:
>
> https://gitlab.com/vilhelmgray/iio/commits/generic_counter_v10
>
> Documentation can be found at:
>
> Documentation/driver-api/generic-counter.rst
> Documentation/ABI/testing/sysfs-bus-counter
>
> Look at the existing drivers inside the drivers/counter directory to
> serve as references:
>
> drivers/counter/ftm-quaddec.c
> drivers/counter/stm32-timer-cnt.c
>
> If you have any troubles or difficulties with the API, send me a message
> and I will be happy to help. :-)
>

Thank you for your information.
I read and understand the new Generic Counter API.

Thank you,
Kanematsu

> Thank you,
>
> William Breathitt Gray
>
>>
>>>
>>> Shinji Kanematsu (2):
>>> dt-bindings: iio: counter: Add Milbeaut Updown Counter
>>> iio: counter: Add support for Milbeaut Updown Counter
>>>
>>> .../bindings/iio/counter/milbeaut-updown_cnt.txt | 22 ++
>>> drivers/iio/counter/Kconfig | 12 +
>>> drivers/iio/counter/Makefile | 1 +
>>> drivers/iio/counter/milbeaut-updown.h | 38 ++
>>> drivers/iio/counter/milbeaut-updown_cnt.c | 385 +++++++++++++++++++++
>>> 5 files changed, 458 insertions(+)
>>> create mode 100644 Documentation/devicetree/bindings/iio/counter/milbeaut-updown_cnt.txt
>>> create mode 100644 drivers/iio/counter/milbeaut-updown.h
>>> create mode 100644 drivers/iio/counter/milbeaut-updown_cnt.c
>>>
>>

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