changes v8: - use use enum index instead of enum value for the counter function - register signal unconditionally and return error is signal revel is read changes v7: - make most of structs dynamically allocatable to assign IRQ based description to the signal - assign dev name instead for driver name to the IRQ changes v6: - rename it to interrupt-counter - driver fixes - device tree fixes changes v5: - rename it to event counter, since it support different event sources - make it work with gpio-only or irq-only configuration - update yaml binding changes v4: - use IRQ_NOAUTOEN to not enable IRQ by default - rename gpio_ from name pattern and make this driver work any IRQ source. changes v3: - convert counter to atomic_t changes v2: - add commas - avoid possible unhandled interrupts in the enable path - do not use of_ specific gpio functions Add support for GPIO based pulse counter. For now it can only count pulses. With counter char device support, we will be able to attach timestamps and measure actual pulse frequency. Never the less, it is better to mainline this driver now (before chardev patches go mainline), to provide developers additional use case for the counter framework with chardev support. Oleksij Rempel (2): dt-bindings: counter: add interrupt-counter binding counter: add IRQ or GPIO based counter .../bindings/counter/interrupt-counter.yaml | 62 +++++ MAINTAINERS | 7 + drivers/counter/Kconfig | 10 + drivers/counter/Makefile | 1 + drivers/counter/interrupt-cnt.c | 244 ++++++++++++++++++ 5 files changed, 324 insertions(+) create mode 100644 Documentation/devicetree/bindings/counter/interrupt-counter.yaml create mode 100644 drivers/counter/interrupt-cnt.c -- 2.29.2
