iio: adc: stm32: add support for triggered buffer mode

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STM32 ADC conversions can be launched using hardware triggers.
It can be used to start conversion sequences (group of channels).
Selected channels are select via sequence registers.
Trigger source is selected via 'extsel' (external trigger mux).
Trigger polarity is set to rising edge by default.

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

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Fabrice Gasnier 2017-01-26 15:28:29 +01:00 • committed by Jonathan Cameron

parent 6db0f7ccc9

commit da9b948514

2 changed files with 298 additions and 21 deletions

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2

drivers/iio/adc/Kconfig

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319

drivers/iio/adc/stm32-adc.c

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