This patch serie is to be applied on top of https://patchwork.kernel.org/project/linux-iio/list/?series=147 (a more recent version of the serie is available here : https://gitlab.com/vilhelmgray/iio/tree/generic_counter_v10 ) Main changes in v2: The code is a bit simpler, thanks to more use of devm_* functions. The polling/32bit signed version has been dropped, as not needed and no other driver is doing that. Patrick Havelange (7): include/fsl: add common FlexTimer #defines in a separate header. drivers/pwm: pwm-fsl-ftm: use common header for FlexTimer #defines drivers/clocksource: timer-fsl-ftm: use common header for FlexTimer #defines dt-bindings: counter: ftm-quaddec counter: add FlexTimer Module Quadrature decoder counter driver counter: ftm-quaddec: Documentation: Add specific counter sysfs documentation LS1021A: dtsi: add ftm quad decoder entries .../ABI/testing/sysfs-bus-counter-ftm-quaddec | 16 + .../bindings/counter/ftm-quaddec.txt | 18 + arch/arm/boot/dts/ls1021a.dtsi | 28 ++ drivers/clocksource/timer-fsl-ftm.c | 15 +- drivers/counter/Kconfig | 9 + drivers/counter/Makefile | 1 + drivers/counter/ftm-quaddec.c | 356 ++++++++++++++++++ drivers/pwm/pwm-fsl-ftm.c | 44 +-- include/linux/fsl/ftm.h | 88 +++++ 9 files changed, 519 insertions(+), 56 deletions(-) create mode 100644 Documentation/ABI/testing/sysfs-bus-counter-ftm-quaddec create mode 100644 Documentation/devicetree/bindings/counter/ftm-quaddec.txt create mode 100644 drivers/counter/ftm-quaddec.c create mode 100644 include/linux/fsl/ftm.h -- 2.19.1