[PATCH v2 0/2] iio: adc: add support for pac1921

Matteo Martelli
2024-07-04T17:42:12Z

Add iio driver and DT binding for the Microchip PAC1921 Current/Power
monitor.

Implemented most of the features with few limitations listed in the
driver commit message.

Tested with a Pine64 host board connected to a PAC1921 click board [1]
via I2C. The PAC1921 click board embeds the Microchip PAC1921 device
and a 10 mOhms shunt resistor. The PAC1921 datasheet is at [2].

[1]: https://www.mikroe.com/pac1921-click
[2]: https://ww1.microchip.com/downloads/en/DeviceDoc/PAC1921-Data-Sheet-DS20005293E.pdf

Signed-off-by: Matteo Martelli <matteomartelli3@gmail.com>
---
Changes in v2:
- DT binding: remove vendor specific gains, add vdd-supply, add
read/int gpio and fix properties order in example
- Remove parsing of gains from DT
- Handle vdd regulator
- Fix return value in filter_en write handler
- Link to v1: https://lore.kernel.org/r/20240703-iio-pac1921-v1-0-54c47d9180b6@gmail.com

---
Matteo Martelli (2):
dt-bindings: iio: adc: add binding for pac1921
iio: adc: add support for pac1921

.../ABI/testing/sysfs-bus-iio-adc-pac1921 | 45 +
.../bindings/iio/adc/microchip,pac1921.yaml | 71 ++
MAINTAINERS | 7 +
drivers/iio/adc/Kconfig | 10 +
drivers/iio/adc/Makefile | 1 +
drivers/iio/adc/pac1921.c | 1038 ++++++++++++++++++++
6 files changed, 1172 insertions(+)
---
base-commit: 529d2e1900642eba6df28307e26e19793e227546
change-id: 20240606-iio-pac1921-77fa0fa3ac11

Best regards,
--
Matteo Martelli <matteomartelli3@gmail.com>