STM32 ADC, can use GPIOs configured as EXTI line (external interrupt) as trigger source for conversions. This patchset is based on latest IIO testing branch, and adds support for EXTi GPIO triggers in IIO. It also adds a dt option to configure default trigger polarity in STM32 ADC driver.
--- Changes in V2: - Fixed Kconfig dependencies Fabrice Gasnier (5): Documentation: dt: iio: document stm32 adc trigger polarity iio: adc: stm32: add dt option to set default trigger polarity Documentation: dt: iio: document stm32 exti trigger iio: trigger: add support for STM32 EXTI triggers iio: adc: stm32: add exti gpio trigger source .../devicetree/bindings/iio/adc/st,stm32-adc.txt | 3 + .../bindings/iio/trigger/st,stm32-exti-trigger.txt | 17 +++ drivers/iio/adc/stm32-adc.c | 14 +++ drivers/iio/trigger/Kconfig | 11 ++ drivers/iio/trigger/Makefile | 1 + drivers/iio/trigger/stm32-exti-trigger.c | 124 +++++++++++++++++++++ include/linux/iio/trigger/stm32-exti-trigger.h | 26 +++++ 7 files changed, 196 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/trigger/st,stm32-exti-trigger.txt create mode 100644 drivers/iio/trigger/stm32-exti-trigger.c create mode 100644 include/linux/iio/trigger/stm32-exti-trigger.h -- 1.9.1
