[PATCH v4 00/13] Fixes and cleanups for the AD5686 IIO driver

[Rodrigo Alencar via B4 Relay <devnull+rodrigo.alencar.analog.com@kernel.org>]

This is the first series of three on updating the AD5686 driver.

A bigger patch series was sent before ("Extend device support for AD5686 driver"),
but this is not exactly a v2:

https://lore.kernel.org/r/20260422-ad5313r-iio-support-v1-0-ed7dca001d1b@analog.com

This one adds a number of cleanups and fixes, like:
- Refactor include headers (IWYU);
- Remove redundant register definition;
- Drop enum chip id in favor of per-device chip_info structs;
- Fix internal voltage reference control for single-channel devices;
- Acquire lock when doing power down control;
- Fix powerdown control for dual-channel devices;

Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
---
Changes in v4:
- Address issues spotted by sashiko.
- Link to v3: https://lore.kernel.org/r/20260428-ad5686-fixes-v3-0-9cff7bd67a15@analog.com

Changes in v3:
- Misc changes like parenthesis removal and line breaks
- Link to v2: https://lore.kernel.org/r/20260427-ad5686-fixes-v2-0-188e05199368@analog.com

Changes in v2:
- Bring fixes first and cleanups later
- Link to v1: https://lore.kernel.org/r/20260426-ad5686-fixes-v1-0-7c946a77794e@analog.com

---
Rodrigo Alencar (13):
      iio: dac: ad5686: fix ref bit initialization for single-channel parts
      iio: dac: ad5686: fix input raw value check
      iio: dac: ad5686: acquire lock when doing powerdown control
      iio: dac: ad5686: fix powerdown control on dual-channel devices
      iio: dac: ad5686: fix overlapping DMA buffers in I2C read
      iio: dac: ad5686: refactor include headers
      iio: dac: ad5686: remove redundant register definition
      iio: dac: ad5686: drop enum id
      iio: dac: ad5686: add of_match table to the spi driver
      iio: dac: ad5686: remove powerdown mask magic number
      iio: dac: ad5686: add control_sync() for single-channel devices
      iio: dac: ad5686: cleanup doc header of local structs
      iio: dac: ad5686: create bus ops struct

 drivers/iio/dac/ad5686-spi.c |  73 ++++--
 drivers/iio/dac/ad5686.c     | 526 +++++++++++++++++++++----------------------
 drivers/iio/dac/ad5686.h     | 120 +++++-----
 drivers/iio/dac/ad5696-i2c.c |  84 +++----
 4 files changed, 419 insertions(+), 384 deletions(-)
---
base-commit: d86db1905add39f905cf9f04252804b359914ed6
change-id: 20260426-ad5686-fixes-63ea68811bdb

Best regards,
-- 
Rodrigo Alencar <rodrigo.alencar@analog.com>