tree 3709cc3e3791010321c2280936e3babe05d1a569
parent 6db0f7ccc9f3876840e36c23ce357204cdc2d0ae
author Fabrice Gasnier <fabrice.gasnier@st.com> 1485440909 +0100
committer Jonathan Cameron <jic23@kernel.org> 1485627826 +0000

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

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>