linux-kernel - [PATCH v2 0/2] iio: adc: ti-ads7924: add Texas Instruments ADS7924 driver

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Date:   Tue, 10 Jan 2023 11:01:22 -0500
From:   Hugo Villeneuve <hugo@...ovil.com>
To:     hvilleneuve@...onoff.com, jic23@...nel.org, lars@...afoo.de,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org
Cc:     linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, hugo@...ovil.com
Subject: [PATCH v2 0/2] iio: adc: ti-ads7924: add Texas Instruments ADS7924 driver

From: Hugo Villeneuve <hvilleneuve@...onoff.com>

Hello,
this patch series adds the driver for the Texas Instruments ADS7924.

The Texas Instruments ADS7924 is a 4 channels, 12-bit analog to
digital converter (ADC) with an I2C interface.

Patch 1 contains the driver for the ADS7924.

Patch 2 add the dt-bindings for the ADS7924.

I have tested the driver using the Texas Instruments ADS7924EVM board connected
to a Variscite Symphony EVK with a IMX8MN NANO SOM:
  - Tested reset pin Ok
  - Tested regulator setup Ok
  - Tested reading sysfs in_voltage_scale Ok
  - Tested reading sysfs in_voltageX_raw (x=0 to 3) Ok

Thank you.

Link: [v1] https://lore.kernel.org/linux-iio/20221222203610.2571287-1-hugo@hugovil.com/#t

Changes for V2:
- Dropped patch "iio: adc: Kconfig: add SPI interface mention to AD7924
  description"
- Fixed comments style
- Removed unused defines/variables/etc related to buffered support (no buffered
  support for the moment).
- Convert of-specific code to use the generic firmware property accessors in
  include/linux/property.h.
- Use FIELD_GET / FIELD_PREP for bit operations/defines
- Simplified conversion result registers definitions/usage.
- Now using mutex lock/unlock only for INFO_RAW switch branch
- Use dev_err_probe() in all return paths of ads7924_probe()
- Removed ads7924_remove() after adding callbacks with
  devm_add_action_or_reset().
- Change iio_device_register() to devm_iio_device_register().
- Add the legacy i2c_device_id table
- DT bindings: reorder entries, fix indentation,improve comments, add interrupt
  line

Hugo Villeneuve (2):
  iio: adc: ti-ads7924: add Texas Instruments ADS7924 driver
  dt-bindings: iio: adc: add Texas Instruments ADS7924

 .../bindings/iio/adc/ti,ads7924.yaml          | 104 ++++
 MAINTAINERS                                   |   7 +
 drivers/iio/adc/Kconfig                       |  11 +
 drivers/iio/adc/Makefile                      |   1 +
 drivers/iio/adc/ti-ads7924.c                  | 492 ++++++++++++++++++
 5 files changed, 615 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/ti,ads7924.yaml
 create mode 100644 drivers/iio/adc/ti-ads7924.c


base-commit: bfcae956d9b50ea0e221cefc171604c569017d7e
-- 
2.30.2