Olivier Moysan 0ae0c43abc iio: adc: stm32-dfsdm: fix data type ...

commit c6013bf50e upstream.

Fix the data type as DFSDM raw output is complements 2,
24bits left aligned in a 32-bit register.
This change does not affect AUDIO path
- Set data as signed for IIO (as for AUDIO)
- Set 8 bit right shift for IIO.
The 8 LSBs bits of data contains channel info and are masked.

Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Fixes: e2e6771c64 ("IIO: ADC: add STM32 DFSDM sigma delta ADC support")
Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2019-09-19 09:09:40 +02:00

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accel

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adc

iio: adc: stm32-dfsdm: fix data type

2019-09-19 09:09:40 +02:00

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