[PATCH v8 0/8] iio: adi-axi-adc,ad9647: Add support for AD9467 ADC

[Alexandru Ardelean <alexandru.ardelean@analog.com>]

This changeset adds support for the AD9467 LVDS High-Speed ADC.
In order to support it, support for an FPGA ADI AXI ADC is added in this
set.
This uses the current support for IIO buffer DMAEngine.

Changelog v7 -> v8:
* in 'iio: adc: adi-axi-adc: add support for AXI ADC IP core'
  - updated register definitions and bits to newer format/docs; the ref driver wasn't really up-to-date
    -- prefixed bit names with reg-name to avoid bit definition colisions; that makes some macros longer, but at least the format is consistent
  - using dev_name(&pdev->dev) for indio_dev->name
  - moved reset to own axi_adc_reset() function; may be re-used later
  - some re-formatting/alignment changes
  - address ENOSYS checkpatch complaint; changed with EOPNOTSUPP

Changelog v6 -> v7:
* Fixed dt-schema build for adi,axi-adc.yaml based on Rob's suggestion
  - added '$ref: /schemas/types.yaml#/definitions/phandle' to 'adi,adc-dev'
  - dropped 'maxItems' from 'adi,adc-dev'

Changelog v5 -> v6
* fix URLs; got changed during rename
   https://wiki.analog.com/resources/fpga/docs/adi_axi_adc_ip ->
   https://wiki.analog.com/resources/fpga/docs/axi_adc_ip
  - noticed while working on the AXI DAC driver

Changelog v4 -> v5:
* update drivers/iio/adc/Kconfig note about module name; omitted during first rename
   - 'module will be called axi-adc.' -> 'module will be called adi-axi-adc.'

Changelog v3 -> v4:
* addressed Rob's dt-remarks
   - change 'adi-axi-adc-client' prop to 'adi,adc-dev'

Changelog v2 -> v3:
* addressed compiler warning

Changelog v1 -> v2:
* first series was added a bit hastily
* addressed  'make dt_binding_check' complaints; seems I missed a few when running the check; 
* added missing patches to include/linux/fpga/adi-axi-common.h
   - 'include: fpga: adi-axi-common.h: fixup whitespace tab -> space'
   - 'include: fpga: adi-axi-common.h: add version helper macros'
* patch 'iio: buffer-dmaengine: add dev-managed calls for buffer alloc/free'
   - remove copy+pasted comment for 'devm_iio_dmaengine_buffer_alloc()'
   - removed devm_iio_dmaengine_buffer_free() ; hopefully it might never be needed
   - fix-up alignment for devm_iio_dmaengine_buffer_alloc() in header
* patch 'iio: adc: adi-axi-adc: add support for AXI ADC IP core'
   - renamed axi-adc.c -> adi-axi-adc.c & Kconfig symbol
   - prefix all axi_adc -> adi_axi_adc
   - removed switch statement in axi_adc_read_raw() & axi_adc_write_raw()
   - remove axi_adc_chan_spec ; replaced with iio_chan_spec directly ; will think of a simpler solution for extra chan params
   - removed left-over 'struct axi_adc_cleanup_data'
   - moved 'devm_add_action_or_reset()' call right after 'adi_axi_adc_attach_client()'
   - switched to using 'devm_platform_ioremap_resource()'
* patch 'iio: adc: ad9467: add support AD9467 ADC'
  - renamed ADI_ADC reg prefixes to AN877_ADC
  - dropped 'info_mask_separate' field in AD9467_CHAN - will be re-added later when driver gets more features; was left-over from the initial ref driver
  - remove .shift = 0,  in AD9467_CHAN
  - renamed 'sample-clock' -> 'adc-clock'
  - direct returns in ad9467_read_raw() & ad9467_write_raw() & ad9467_setup() switch statements
  - removed blank line after devm_axi_adc_conv_register()
  - removed ad9467_id & reworked to use ad9467_of_match
Alexandru Ardelean (6):
  include: fpga: adi-axi-common.h: fixup whitespace tab -> space
  include: fpga: adi-axi-common.h: add version helper macros
  iio: buffer-dmaengine: use %zu specifier for sprintf(align)
  iio: buffer-dmaengine: add dev-managed calls for buffer alloc
  dt-bindings: iio: adc: add bindings doc for AXI ADC driver
  dt-bindings: iio: adc: add bindings doc for AD9467 ADC

Michael Hennerich (2):
  iio: adc: adi-axi-adc: add support for AXI ADC IP core
  iio: adc: ad9467: add support AD9467 ADC

 .../bindings/iio/adc/adi,ad9467.yaml          |  65 ++
 .../bindings/iio/adc/adi,axi-adc.yaml         |  63 ++
 drivers/iio/adc/Kconfig                       |  35 +
 drivers/iio/adc/Makefile                      |   2 +
 drivers/iio/adc/ad9467.c                      | 432 ++++++++++++
 drivers/iio/adc/adi-axi-adc.c                 | 618 ++++++++++++++++++
 .../buffer/industrialio-buffer-dmaengine.c    |  41 +-
 include/linux/fpga/adi-axi-common.h           |   6 +-
 include/linux/iio/adc/adi-axi-adc.h           |  63 ++
 include/linux/iio/buffer-dmaengine.h          |   3 +
 10 files changed, 1326 insertions(+), 2 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad9467.yaml
 create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,axi-adc.yaml
 create mode 100644 drivers/iio/adc/ad9467.c
 create mode 100644 drivers/iio/adc/adi-axi-adc.c
 create mode 100644 include/linux/iio/adc/adi-axi-adc.h

-- 
2.20.1