[v2,0/2] add AD8460 DAC driver

Message

Mariel Tinaco July 30, 2024, 3:05 a.m. UTC

Add support to AD8460 Waveform Generator DAC

changes in v2

ad8460:
  * Mapped the fault monitoring settings for overcurrent, overvoltage
    and overtemperature limits to IIO Event threshold controls.
  * Added optional raw temperature attribute that gets data from an
    IIO provider if it is present. e.g. an ADC channel that reads data
    from TMP pin
  * Added setter/getter for raw current
  * Used devm_iio_dmaengine_buffer_setup_ext to setup DMA engine buffer
    (No IIO Backend)
  * Used byte-swapping and bulk-transfer for HVDAC data words
  * Refactored regulator section to make us of
    devm_regulator_get_enable_read_voltage
  * Fixed error handling for rset_ohms property
  * Reverted IIO_ALTVOLTAGE channel type to IIO_VOLTAGE. Setting it aside
    for when IIO backend would be implemented
  * Added attributes for toggle_en, symbol and 16 raw values following
    the generalized sysfs ABI for DAC devices.
    toggle_en: (0) to enable Arbitrary Waveform Generator (AWG) mode,
                   generate DAC output from parallel interface
               (1) to enable Arbitrary Pattern Generator (APG) mode,
                   generate DAC output from HVDAC data words
    symbol: for APG mode, declare the number of raw HVDAC data words
            from 0 to cycle through in the DAC output, a.k.a Pattern Depth
    rawN: HVDAC Data words available, from 0 to 15

Bindings:
  * Matched property name of REFIO_1P2V regulator to its pin name.
  * Added GPIO bindings for sdn-reset, reset, and sdn-io although only
    reset is supported by the driver.
  * Added Regulator bindings for hvcc, hvee, vcc-5v, vref-5v,
    dvdd-3p3v and avdd-3p3v
  * Added DMA-channel bindings.
  * Hard-coded limits for voltage, current and temperature

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

 .../bindings/iio/dac/adi,ad8460.yaml          | 154 +++
 MAINTAINERS                                   |   8 +
 drivers/iio/dac/Kconfig                       |  13 +
 drivers/iio/dac/Makefile                      |   1 +
 drivers/iio/dac/ad8460.c                      | 976 ++++++++++++++++++
 5 files changed, 1152 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/dac/adi,ad8460.yaml
 create mode 100644 drivers/iio/dac/ad8460.c


base-commit: 9900e7a54764998ba3a22f06ec629f7b5fe0b422