This series combines some fix and improvements to the counter interface, found while stm32 timer counter driver developements. It also introduces a new tool that can be used for testing. Then, it improves the stm32 timer counter driver by introducing new signals, e.g. counting frequency, and missing channels. It also adds support for interrupt based events using the chrdev interface. Two event types are added in this series: overflows and capture. Up to now, stm32 timer counter driver focused mainly on quadrature encoder feature. With this series, all timer instances can be enabled for simple counting (with overflow and capture events). Fabrice Gasnier (8): counter: chrdev: fix getting array extensions counter: chrdev: remove a typo in header file comment tools/counter: add a flexible watch events tool mfd: stm32-timers: add support for interrupts counter: stm32-timer-cnt: rename quadrature signal counter: stm32-timer-cnt: introduce clock signal counter: stm32-timer-cnt: populate capture channels and check encoder counter: stm32-timer-cnt: add support for events drivers/counter/counter-chrdev.c | 4 +- drivers/counter/stm32-timer-cnt.c | 585 ++++++++++++++++++++++++++- drivers/mfd/stm32-timers.c | 46 +++ include/linux/mfd/stm32-timers.h | 26 ++ include/uapi/linux/counter.h | 2 +- tools/counter/Build | 1 + tools/counter/Makefile | 8 +- tools/counter/counter_watch_events.c | 348 ++++++++++++++++ 8 files changed, 998 insertions(+), 22 deletions(-) create mode 100644 tools/counter/counter_watch_events.c -- 2.25.1
