[PATCH v4 0/3] iio: adc: ad4695: new driver for AD4695 and similar ADCs

[David Lechner]

This is adding DT bindings and a new driver for the AD4695 and similar
devices. The plan is to implement quite a few more features, but this
is a complex chip so we're spreading out the work. To start with, we
have a reasonably complete DT binding and a very basic driver.

This work is being done in collaboration with Analog Devices Inc.,
hence they listed as maintainers rather than me. The code has been
tested on a ZedBoard with an EVAL-AD4696FMCZ using the internal LDO,
an external reference and a variety of input channel configurations.

---
Changes in v4:
* Link to v3: https://lore.kernel.org/r/20240624-iio-adc-ad4695-v3-0-a22c302f06bf@xxxxxxxxxxxx

  [PATCH 1/3]
  * Picked up Conor's reviewed-by tag.

  [PATCH 2/3]
  * moved dt-bindings #include
  * don't initialize mask/val to 0
  * remove xfer[0].bits_per_word = 8;
  * reduce duplicate code in ad4695_read_one_sample()
  * pass st instead of indio_dev to ad4695_parse_channel_cfg()

  [PATCH 3/3]
  * none

Changes in v3:
* Dropped "dt-bindings: iio: adc: add common-mode-channel dependency"
  patch.
* Link to v2: https://lore.kernel.org/r/20240617-iio-adc-ad4695-v2-0-63ef6583f25d@xxxxxxxxxxxx

  [PATCH 1/3]
  * Change interrupts to be per pin instead of per signal.
  * Drop diff-channels and single-channel properties.
  * Odd numbered pins added to common-mode-channel property enum.
  * REFGND and COM values changed to avoid confusion with pin numbers.
  * Add inX-supply properties for odd numbed input pins.

  [PATCH 2/3]
  * always include all channels, not just ones customized in DT
  * rework channel fwnode parsing for DT changes

  [PATCH 3/3]
  * Rework DT examples for DT bindings changes

Changes in v2:
* Link to v1: https://lore.kernel.org/r/20240612-iio-adc-ad4695-v1-0-6a4ed251fc86@xxxxxxxxxxxx

  [PATCH 1/4]
  * New patch
  * Depends on recently applied patch
    https://lore.kernel.org/linux-iio/20240607-ad4111-v7-1-97e3855900a0@xxxxxxxxxx/

  [PATCH 2/4]
  * Drop *-wlcsp compatible strings
  * Don't use fallback compatible strings
  * Reword supply descriptions
  * Use standard channel properties instead of adi,pin-pairing
  * Fix unnecessary | character
  * Fix missing blank line
  * Add header file with common mode channel macros

  [PATCH 3/4]
  * rework register definition macros
  * remove code structure comments at top level
  * remove simple wrapper functions around regmap functions
  * rework channel fwnode parsing for DT changes
  * fix missing return value check

  [PATCH 4/4]
  * Rework DT examples for DT bindings changes
  * Fix wrong MAINTAINERS update

---
David Lechner (3):
      dt-bindings: iio: adc: add AD4695 and similar ADCs
      iio: adc: ad4695: Add driver for AD4695 and similar ADCs
      Documentation: iio: Document ad4695 driver

 .../devicetree/bindings/iio/adc/adi,ad4695.yaml    | 256 ++++++++
 Documentation/iio/ad4695.rst                       | 155 +++++
 Documentation/iio/index.rst                        |   1 +
 MAINTAINERS                                        |  12 +
 drivers/iio/adc/Kconfig                            |  11 +
 drivers/iio/adc/Makefile                           |   1 +
 drivers/iio/adc/ad4695.c                           | 719 +++++++++++++++++++++
 include/dt-bindings/iio/adi,ad4695.h               |   9 +
 8 files changed, 1164 insertions(+)
---
base-commit: 986da024b99a72e64f6bdb3f3f0e52af024b1f50
change-id: 20240517-iio-adc-ad4695-ef72b2a2cf88

Best regards,
-- 
David Lechner <dlechner@xxxxxxxxxxxx>