This patchset adds support for the STM32H7 DAC controller It's a 12-bit, voltage output digital-to-analog converter. It has two output channels, each with its own converter, trigger sources and waveform generator. Each channel can be used independently, so common resources are managed in stm32-dac-core driver (e.g. clock, reset, regulator, registers). One IIO device is instantiated per DAC output channel, in stm32-dac driver, so each channel can have its own trigger. Please find bellow basic examples, using this driver to: - generate DC voltage output on channel1 - generate a triangle waveform on channel2 # set max DC voltage / enable / min DC voltage / disable on out1: cd /sys/bus/iio/devices/iio\:device0 echo 4095 > out_voltage1_raw echo 1 > out_voltage1_en echo 0 > out_voltage1_raw echo 0 > out_voltage1_en # configure timer trigger, and set triangle waveform with max # amplitude on out2: cd /sys/bus/iio/devices/trigger9 cat name tim2_trgo echo 10000 > sampling_frequency cd /sys/bus/iio/devices/iio\:device1 echo triangle > wave echo 11 > mamp echo tim2_trgo > trigger/current_trigger echo 1 > out_voltage2_en Fabrice Gasnier (4): dt-bindings: iio: stm32-dac: Add support for STM32 DAC iio: dac: add support for stm32 DAC iio: dac: stm32: add support for trigger events iio: dac: stm32: add support for waveform generator Documentation/ABI/testing/sysfs-bus-iio-dac-stm32 | 32 ++ .../devicetree/bindings/iio/dac/st,stm32-dac.txt | 56 +++ drivers/iio/dac/Kconfig | 18 + drivers/iio/dac/Makefile | 2 + drivers/iio/dac/stm32-dac-core.c | 180 +++++++ drivers/iio/dac/stm32-dac-core.h | 63 +++ drivers/iio/dac/stm32-dac.c | 538 +++++++++++++++++++++ 7 files changed, 889 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-dac-stm32 create mode 100644 Documentation/devicetree/bindings/iio/dac/st,stm32-dac.txt create mode 100644 drivers/iio/dac/stm32-dac-core.c create mode 100644 drivers/iio/dac/stm32-dac-core.h create mode 100644 drivers/iio/dac/stm32-dac.c -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
