[0/4] Add support for ADMV8818

Message

Antoniu Miclaus Nov. 9, 2021, 12:31 p.m. UTC

The ADMV8818-EP is a fully monolithic microwave integrated 
circuit (MMIC) that features a digitally selectable frequency of 
operation. The device features four independently controlled high-
pass filters (HPFs) and four independently controlled low-pass 
filters (LPFs) that span the 2 GHz to 18 GHz frequency range.

This patch series includes a proposal to add a subsection in the
IIO subsystem for filter drivers.

NOTE:
Currently depends on 64-bit architecture since the input
clock that server as RFIN should support values
in the range 2 GHz to 18 GHz.

We might need some scaling implementation in the clock
framework so that u64 types are supported when using 32-bit
architectures.

Antoniu Miclaus (4):
  iio: add filter subfolder
  iio:filter:admv8818: add support for ADMV8818
  dt-bindings:iio:filter: add admv8818 doc
  iio:filter:admv8818: Add sysfs ABI documentation

 .../ABI/testing/sysfs-bus-iio-filter-admv8818 |  60 ++
 .../bindings/iio/filter/adi,admv8818.yaml     |  78 ++
 drivers/iio/Kconfig                           |   1 +
 drivers/iio/Makefile                          |   1 +
 drivers/iio/filter/Kconfig                    |  18 +
 drivers/iio/filter/Makefile                   |   7 +
 drivers/iio/filter/admv8818.c                 | 819 ++++++++++++++++++
 7 files changed, 984 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-filter-admv8818
 create mode 100644 Documentation/devicetree/bindings/iio/filter/adi,admv8818.yaml
 create mode 100644 drivers/iio/filter/Kconfig
 create mode 100644 drivers/iio/filter/Makefile
 create mode 100644 drivers/iio/filter/admv8818.c