linux-kernel - [PATCH v2 0/9] Add support for Software mode on AD7606's iio backend driver

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Message-Id: <20241210-ad7606_add_iio_backend_software_mode-v2-0-6619c3e50d81@baylibre.com>
Date: Tue, 10 Dec 2024 10:46:40 +0000
From: Guillaume Stols <gstols@...libre.com>
To: Lars-Peter Clausen <lars@...afoo.de>, 
 Michael Hennerich <Michael.Hennerich@...log.com>, 
 Jonathan Cameron <jic23@...nel.org>, Nuno Sa <nuno.sa@...log.com>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: Jonathan Cameron <Jonathan.Cameron@...wei.com>, 
 linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Michael Hennerich <michael.hennerich@...log.com>, 
 devicetree@...r.kernel.org, dlechner@...libre.com, jstephan@...libre.com, 
 aardelean@...libre.com, adureghello@...libre.com, 
 Guillaume Stols <gstols@...libre.com>
Subject: [PATCH v2 0/9] Add support for Software mode on AD7606's iio
 backend driver

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@...libre.com>
---
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@baylibre.com

---
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@...libre.com>