This is the second version of the series. I ended up trying the new directory route and think it does look nice and more future proof. Biggest change is the first patch where we now pass an info like structure to devm_iio_backend_register(). Again, this is likely also a more future proof approach and we would likely need it sooner or later (one usage I see is for backends to pass in some constant information that could be consumed from frontends when doing backend_get()) v1: * https://lore.kernel.org/linux-iio/20240709-dev-iio-backend-add-debugfs-v1-0-fb4b8f2373c7@xxxxxxxxxx/ v2: * Patch 1: - New patch; * Patch 2: - Added backendY directory with the direct_reg_access and name attributes; - Get the backend name directly from the backend driver; - Get the backend index from backend-names FW property; - Added debugfs-iio-backend to the ABI docs. --- Nuno Sa (8): iio: backend: introduce struct iio_backend_info iio: backend: add debugFs interface iio: backend: add a modified prbs23 support iio: adc: adi-axi-adc: support modified prbs23 iio: adc: adi-axi-adc: split axi_adc_chan_status() iio: adc: adi-axi-adc: implement backend debugfs interface iio: adc: ad9467: add backend test mode helpers iio: adc: ad9467: add digital interface test to debugfs Documentation/ABI/testing/debugfs-iio-backend | 20 ++ MAINTAINERS | 1 + drivers/iio/adc/ad9467.c | 255 +++++++++++++++++++++++--- drivers/iio/adc/adi-axi-adc.c | 71 ++++++- drivers/iio/dac/adi-axi-dac.c | 7 +- drivers/iio/industrialio-backend.c | 155 +++++++++++++++- include/linux/iio/backend.h | 28 ++- 7 files changed, 499 insertions(+), 38 deletions(-) --- base-commit: 168bed989d651794d03638e1f7f7b5a800a6f425 change-id: 20240802-dev-iio-backend-add-debugfs-0b13bb5a5b37 -- Thanks! - Nuno Sá
