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> Co-developed-by: Angelo Dureghello <adureghello@xxxxxxxxxxxx> Signed-off-by: Angelo Dureghello <adureghello@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 Changes in v3: - add some fixes found while testing, - general commit meessages fixes, - codying style fixes, - dt-bindings: add some properties as requirted, - use iio_device_claim_direct_mode (and release), - rename bus read/write functions with "bus" as done for ad3552r. --- Angelo Dureghello (2): dt-bindings: iio: dac: adi-axi-adc: fix ad7606 pwm-names iio: adc: ad7606: fix wrong scale available Guillaume Stols (8): 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,ad7606.yaml | 1 + .../devicetree/bindings/iio/adc/adi,axi-adc.yaml | 70 +++++++- drivers/iio/adc/ad7606.c | 152 ++++++++++++++--- drivers/iio/adc/ad7606.h | 111 +++++++++---- drivers/iio/adc/ad7606_bus_iface.h | 16 ++ drivers/iio/adc/ad7606_par.c | 69 +++++++- drivers/iio/adc/ad7606_spi.c | 145 +--------------- drivers/iio/adc/adi-axi-adc.c | 184 ++++++++++++++++++++- 8 files changed, 541 insertions(+), 207 deletions(-) --- base-commit: ae62b72e76b72f98a4955580cb1a46095fda7d8e change-id: 20250129-wip-bl-ad7606_add_backend_sw_mode-dd22a50663f3 Best regards, -- Angelo Dureghello <adureghello@xxxxxxxxxxxx>
