The previous series added iio_backend mode, but the configuration for this mode was only possible through GPIOs (Hardware mode). Here, we add support for configuring the chip using its registers (Software mode). The bus access is based on Angelo's ad3552 implementation, that is we have a particular compatible for the backend (here axi-adc) version supporting the ad7606's register writing, and the ad7606 is defined as a child node of the backend in the devicetree. Small changes are added to make the code a bit more straightforward to understand, and more compact. Signed-off-by: Guillaume Stols <gstols@xxxxxxxxxxxx> --- Changes in v2: - Improved descriptions. - dt-bindings: improved descriptions, added exemple and additional property for the custom IP. - Reworked some macro commits to avoid changing order and associated diff artifacts. - Various cleanups and formatting fixes. - Link to v1: https://lore.kernel.org/r/20241121-ad7606_add_iio_backend_software_mode-v1-0-8a693a5e3fa9@xxxxxxxxxxxx --- Guillaume Stols (9): iio: adc: ad7606: Fix hardcoded offset in the ADC channels dt-bindings: iio: dac: adi-axi-adc: Add ad7606 variant iio:adc: ad7606: Move the software mode configuration iio: adc: ad7606: Move software functions into common file iio: adc: adi-axi-adc: Add platform children support iio: adc: adi-axi-adc: Add support for AD7606 register writing iio: adc: ad7606: change r/w_register signature iio: adc: ad7606: Change channel macros parameters iio: adc: ad7606: Add support for writing registers when using backend .../devicetree/bindings/iio/adc/adi,axi-adc.yaml | 53 ++++++ drivers/iio/adc/ad7606.c | 202 +++++++++++++++++---- drivers/iio/adc/ad7606.h | 113 ++++++++---- drivers/iio/adc/ad7606_bi.h | 16 ++ drivers/iio/adc/ad7606_par.c | 56 ++++++ drivers/iio/adc/ad7606_spi.c | 145 +-------------- drivers/iio/adc/adi-axi-adc.c | 175 +++++++++++++++++- 7 files changed, 544 insertions(+), 216 deletions(-) --- base-commit: 5ab39233382c621d3271cc274d1534e1b687f4d3 change-id: 20241009-ad7606_add_iio_backend_software_mode-567d9c392243 Best regards, -- Guillaume Stols <gstols@xxxxxxxxxxxx>
