v1: https://lore.kernel.org/linux-iio/20231204144925.4fe9922f@jic23-huawei/T/#m222f5175273b81dbfe40b7f0daffcdc67d6cb8ff v2: https://lore.kernel.org/r/20231208-dev-iio-backend-v2-0-5450951895e1@xxxxxxxxxx Changes in v3: - Patch 1: * Use proposed generic schema [1]. Also make it a required property; * Improved the commit message. - Patch 2: * Improved commit message. - Patch 4: * Namespace all IIO DMAENGINE buffer exports; * Removed unrelated new line removal change. - Patch 5: * Namespace all IIO backend exports. - Patch 6: * Set backend.h in alphabetical order; * Import IIO backend namespace. - Patch 7: * Don't depend on OF in kbuild anymore; * Import IIO backend namespace. For the bindings patches, I tried not to enter into much details about the IIO framework as I think specifics of the implementation don't care from the bindings perspective. Hopefully the commit messages are good enough. I'm also aware that patch 1 is not backward compatible but we are anyways doing it on the driver side (and on the driver the property is indeed required). Anyways, just let me know if making the property required is not acceptable (I'm fairly confident no one was using the upstream version of the driver and so validating devicetrees for it). Keeping the block diagram in v3's cover so we don't have to follow links to check the one of the typicals setups. ------------------------------------------------------- ------------------ | ----------- ------------ ------- FPGA | | ADC |------------------------| | AXI ADC |---------| DMA CORE |------| RAM | | | (Frontend/IIO) | Serial Data (eg: LVDS) | |(backend)|---------| |------| | | | |------------------------| ----------- ------------ ------- | ------------------ ------------------------------------------------------- Jonathan, I was also tempted in including the diagram in the source file. Would that be a good idea? [1]: https://github.com/devicetree-org/dt-schema/pull/120 --- Nuno Sa (7): dt-bindings: adc: ad9467: add new io-backend property dt-bindings: adc: axi-adc: deprecate 'adi,adc-dev' driver: core: allow modifying device_links flags iio: buffer-dmaengine: export buffer alloc and free functions iio: add the IIO backend framework iio: adc: ad9467: convert to backend framework iio: adc: adi-axi-adc: move to backend framework Olivier Moysan (1): of: property: add device link support for io-backends .../devicetree/bindings/iio/adc/adi,ad9467.yaml | 5 + .../devicetree/bindings/iio/adc/adi,axi-adc.yaml | 4 +- MAINTAINERS | 8 + drivers/base/core.c | 14 +- drivers/iio/Kconfig | 5 + drivers/iio/Makefile | 1 + drivers/iio/adc/Kconfig | 4 +- drivers/iio/adc/ad9467.c | 243 +++++++------ drivers/iio/adc/adi-axi-adc.c | 381 +++++--------------- drivers/iio/buffer/industrialio-buffer-dmaengine.c | 8 +- drivers/iio/industrialio-backend.c | 386 +++++++++++++++++++++ drivers/of/property.c | 2 + include/linux/iio/adc/adi-axi-adc.h | 68 ---- include/linux/iio/backend.h | 68 ++++ include/linux/iio/buffer-dmaengine.h | 3 + 15 files changed, 730 insertions(+), 470 deletions(-) --- base-commit: 3cde3cdb0b23151dbaac476b17eb1868335993aa change-id: 20231120-dev-iio-backend-d14b473a1d9f -- Thanks! - Nuno Sá
