[PATCH 0/2] add AD8460 DAC driver

Mariel Tinaco
2024-05-10T06:41:55Z

The AD8460 is a 14-bit, high power +-40V 1A, high-speed DAC,
with dual digital input modes, programmable supply current and
fault monitoring and protection settings for output current,
output voltage and junction temperature.

The fault monitoring and shutdown protection features were
supported in the earlier versions of the IIO driver but was
scrapped due to uncertainties if the functionalities belong to
the IIO driver. However, it would be best to implement it for
the device's quality of life. I'd like to know if it's better
suited as a stand-alone HWMON driver.

The following are the configurable and readable parameters
through SPI that could be implemented on the HWMON driver:
* An enable bit to arm/protect the device on overcurrent,
overvoltage or overtemperature events. The device is shut down
upon detection.
* A configurable range/threshold for voltage, current and
temperature that raises alarm when exceeded while the device is
armed.
* Flags that can be polled to raise alarm upon detection of
overcurrent, overvoltage or overtemperature events, and apply
additional protective measures.
* Programmable quiescent current (optional)
* Thermal monitoring is done by measuring voltage on TMP pin
(unlikely to be included)

Mariel Tinaco (2):
dt-bindings: iio: dac: add docs for ad8460
iio: dac: support the ad8460 Waveform DAC

.../bindings/iio/dac/adi,ad8460.yaml | 67 ++
MAINTAINERS | 8 +
drivers/iio/dac/Kconfig | 13 +
drivers/iio/dac/Makefile | 1 +
drivers/iio/dac/ad8460.c | 652 ++++++++++++++++++
5 files changed, 741 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/dac/adi,ad8460.yaml
create mode 100644 drivers/iio/dac/ad8460.c

base-commit: 9900e7a54764998ba3a22f06ec629f7b5fe0b422
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2.34.1