iio: adc: stm32-dfsdm: claim direct mode for raw read and settings

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Claim direct mode to ensure no buffer mode is in use for:
- single conversion
- sample rate setting (must be set when filter isn't enabled).
- oversampling ratio (must be set when filter isn't enabled).

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

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Fabrice Gasnier 2019-03-21 17:47:29 +01:00 • committed by Jonathan Cameron

parent 11646e81d7

commit 37ada026be

1 changed files with 16 additions and 1 deletions

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drivers/iio/adc/stm32-dfsdm-adc.c

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