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). Changes in v2: - counter fix and improvement patch applied, hence dropped in v2 series - mfd patch applied, hence dropped in v2 series - revisit watch events tool (mainly command line interface) - add one patch to rename STM32 Timer counter - various review comments from v1 Fabrice Gasnier (6): tools/counter: add a flexible watch events tool counter: stm32-timer-cnt: rename quadrature signal counter: stm32-timer-cnt: rename counter 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/stm32-timer-cnt.c | 558 ++++++++++++++++++++++++++- include/linux/mfd/stm32-timers.h | 15 + tools/counter/Build | 1 + tools/counter/Makefile | 12 +- tools/counter/counter_watch_events.c | 368 ++++++++++++++++++ 5 files changed, 934 insertions(+), 20 deletions(-) create mode 100644 tools/counter/counter_watch_events.c -- 2.25.1
