iio: add iio backend support to sd modulator

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The legacy sd modulator driver registers the sigma delta modulator as
an IIO channel provider. This implementation is not convenient when the
SD modulator has to be cascaded with another IIO device. The scaling
information is distributed across devices, which makes it difficult to
report consistent scaling data on IIO devices.

The solution is to expose these cascaded IIO devices as an aggregate
device, which report global scaling information.
Add IIO backend support to SD modulator to allow scaling information
management.

Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
Link: https://patch.msgid.link/20240730084640.1307938-9-olivier.moysan@foss.st.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

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Olivier Moysan 2024-07-30 10:46:38 +02:00 • committed by Jonathan Cameron

parent 3208fa0cd9

commit bd71b6d0ba

2 changed files with 97 additions and 1 deletions

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1

drivers/iio/adc/Kconfig

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97

drivers/iio/adc/sd_adc_modulator.c

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