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@xxxxxxxxxxxxx> 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, 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 > > >
