[PATCH v5 0/6] iio: gyro: add fxas21002c driver

[Rui Miguel Silva <rui.silva@linaro.org>]

Hi,
This series introduce a NXP fxas21002c tri axis gyroscope driver [0]
It add a core implementaiton plus an i2c and spi.

This device can be found in the warp7 board [1], where it was tested.

---
Cheers,
   Rui

v4->v5:
Jonathan Cameron:
  - remove init ret
  - change handle of iio register, buffer and trigger in probe and
   remove (I think this is what you mean, Jonathan)

v3->v4:
Tomasz Duszynski:
  - mention irq flags in bindings
  - add reference to drive-open-drain in bindings
  - fix headers files
  - drop comas in of_device_id sentinel
  - drop of_match_ptr
  - use probe_new

Jonathan Cameron:
  - disable vdd regulator in case of vddio fail
  - use devm_add_action_or_reset
  - simpler functions returns
  - remove noisy dev_info
  - remove EAGAIN from runtime_suspend

v2->v3:
Jonathan Cameron:
  - cacheline aligned (DMA safe buffer)
     Great presentation [2] and links in the presentation, thanks
  - global renaming, including filenames, fxas2100x->fxas21002c
  - provide spi info in dts bidings
  - Remove SPI_MASTER in Kconfig i2c patch and move it to right patch
  - remove extra blank line in comment
  - add break range_value_from_fs after found
  - in range_value_from_fs use local variable
  - remove mode check at mode_set
  - combine two if statements in mode_set
  - in scale_get return 0 and let caller to set IIO_VAL_FRACTIONAL
  - remove dev_err from vdd_io regulator get
  - handle regulator error path
  - devm_add_action
  - check unwind order
  - simplify data in _suspend and alike
  - disable regulators at suspend
  - error handling at _resume
  - return -EAGAIN at runtime_resume

Rob Herring:
   - Set label as gyroscope

- add interrupt to bindings
- add entry to maintainers


v1->v2:
Peter Meerwal-Stadler:
  - changed (c) to current year
  - add regmap include file in .h
  - fix comments s/cuttof/cutoff/
  - add more info in mutex comment
  - check value in range_fs_from_value
  - ret not checked in range_value_from_fs
  - move mode to enum type
  - remove line between value get and validation of value in all file
  - pre-write, regmap_field_write, post_write refactoring
  - check val2 and val == 0 in write raw
  - check in_anglvel_scale: 7.8125?
  - trigger_handler: 2 => sizeof(s16)
  - check buffer size
  - print %02% to output chip id
  - remove !! as state is bool
  - trigger probe return devm_iio_trigger_register
  - remove error msg in case of devm_iio_device_register
Fabio Estebam:
  - rename FXAS2100X to FXAS21002
  - change compatible nxp,fxas2100x to the exact support
  - add VDD and VDDIO regulators in bindings and driver

[0]: https://www.nxp.com/docs/en/data-sheet/FXAS21002.pdf
[1]: https://www.element14.com/community/community/designcenter/single-board-computers/warp7/overview
[2]: https://events.linuxfoundation.org/wp-content/uploads/2017/12/20181023-Wolfram-Sang-ELCE18-safe_dma_buffers.pdf

Rui Miguel Silva (6):
  iio: gyro: add DT bindings to fxas21002c
  iio: gyro: add core driver for fxas21002c
  iio: gyro: fxas21002c: add i2c driver
  iio: gyro: fxas21002c: add spi driver
  ARM: dts: imx7s-warp: add fxas21002c gyroscope
  MAINTAINERS: add entry for fxas21002c gyro driver

 .../bindings/iio/gyroscope/nxp,fxas21002c.txt |   31 +
 MAINTAINERS                                   |   10 +
 arch/arm/boot/dts/imx7s-warp.dts              |    7 +
 drivers/iio/gyro/Kconfig                      |   22 +
 drivers/iio/gyro/Makefile                     |    3 +
 drivers/iio/gyro/fxas21002c.h                 |  151 +++
 drivers/iio/gyro/fxas21002c_core.c            | 1006 +++++++++++++++++
 drivers/iio/gyro/fxas21002c_i2c.c             |   69 ++
 drivers/iio/gyro/fxas21002c_spi.c             |   70 ++
 9 files changed, 1369 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/gyroscope/nxp,fxas21002c.txt
 create mode 100644 drivers/iio/gyro/fxas21002c.h
 create mode 100644 drivers/iio/gyro/fxas21002c_core.c
 create mode 100644 drivers/iio/gyro/fxas21002c_i2c.c
 create mode 100644 drivers/iio/gyro/fxas21002c_spi.c

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2.21.0