The AD7606C-16 and AD7606C-18 are pretty similar with the AD7606B. The main difference between AD7606C-16 & AD7606C-18 is the precision in bits (16 vs 18). Because of that, some scales need to be defined for the 18-bit variants, as they need to be computed against 2**18 (vs 2**16 for the 16 bit-variants). Because the AD7606C-16,18 also supports bipolar & differential channels, for SW-mode, the default range of 10 V or ±10V should be set at probe. On reset, the default range (in the registers) is set to value 0x3 which corresponds to '±10 V single-ended range', regardless of bipolar or differential configuration. Aside from the scale/ranges, the AD7606C-16 is similar to the AD7606B. This changeset, does a bit of rework to the existing ad7606 driver and then adds support for the AD7606C-16 & AD7606C-18 parts. Datasheet links: https://www.analog.com/media/en/technical-documentation/data-sheets/ad7606c-16.pdf https://www.analog.com/media/en/technical-documentation/data-sheets/ad7606c-18.pdf Alexandru Ardelean (7): iio: adc: ad7606: add 'bits' parameter to channels macros iio: adc: ad7606: move 'val' pointer to ad7606_scan_direct() iio: adc: ad7606: split a 'ad7606_sw_mode_setup()' from probe iio: adc: ad7606: wrap channel ranges & scales into struct iio: adc: ad7606: rework available attributes for SW channels dt-bindings: iio: adc: add adi,ad7606c-{16,18} compatible strings iio: adc: ad7606: add support for AD7606C-{16,18} parts .../bindings/iio/adc/adi,ad7606.yaml | 83 ++++ drivers/iio/adc/ad7606.c | 445 +++++++++++++++--- drivers/iio/adc/ad7606.h | 77 ++- drivers/iio/adc/ad7606_spi.c | 110 ++++- 4 files changed, 624 insertions(+), 91 deletions(-) -- 2.46.0
