[PATCH v3 00/12] iio: accel: adxl313: add power-save on activity/inactivity

[Lothar Rubusch <l.rubusch@gmail.com>]

The patch set covers the following topics:
- add debug register and regmap cache
- prepare iio channel scan_type and scan_index
- prepare interrupt handling
- implement fifo with watermark
- add activity/inactivity together with auto-sleep with link bit
- documentation

Since activity and inactivity here are implemented covering all axis, I
assumed x&y&z. Thus the driver uses a fake channel for activity/inactiviy.

Signed-off-by: Lothar Rubusch <l.rubusch@gmail.com>
---
v2 -> v3:
- verify keeping trailing comma when it's multi-line assignment [v1 02/12]
- adxl313_set_fifo(): verify have two on one line to make it easier to read [v1 07/12]
- adxl313_fifo_transfer(): verify removal of useless initialization of ret [v1 07/12]
- adxl313_fifo_transfer(): verify usage of array_size() from overflow.h [v1 07/12]
- adxl313_fifo_transfer(): verify return 0 here [v1 07/12]
- adxl313_irq_handler(): verify "Why do we need the label?" / moving the call under the conditional [v1 07/12]
- verify reorganization of half condition for Activity [v1 09/12] and Inactivity [v1 10/12]
- verify usage of MICRO instead of 1000000
- adxl313_is_act_inact_en(): restructure according to return logic value, or negative error
- adxl313_set_act_inact_en(): restructure function, use regmap_assign_bits()
- adxl313_set_act_inact_en(): verify makeing it a logical split [v1 11/12]
- adxl313_fifo_transfer(): change iterator variable type from int to unsigned int [v2 07/12]
- adxl313_fifo_reset(): add comment on why reset status registers does not do error check ("At least comment...") [v2 07/12]
- adxl313_fifo_push(): change iterator variable from int to unsigned int [v2 08/12]
- adxl313_fifo_push(): remove duplicate check for samples being <0 [v2 08/12]
- apply regmap_assign_bits() in several places to replace regmap_update_bits() depending on bools
- adxl313_set_watermark(): rename mask variable to make it more comprehensive
- removal of duplicate blanks in various places (sry, my keyboard died) [v1 07/12]

v1 -> v2:
- usage of units.h
- simplify approach for return values
---
Lothar Rubusch (12):
  iio: accel: adxl313: add debug register
  iio: accel: adxl313: introduce channel scan_index
  iio: accel: adxl313: configure scan type for buffer
  iio: accel: adxl313: make use of regmap cache
  iio: accel: adxl313: add function to enable measurement
  iio: accel: adxl313: prepare interrupt handling
  iio: accel: adxl313: add basic interrupt handling
  iio: accel: adxl313: add FIFO watermark
  iio: accel: adxl313: add activity sensing
  iio: accel: adxl313: add inactivity sensing
  iio: accel: adxl313: implement power-save on inactivity
  docs: iio: add ADXL313 accelerometer

 Documentation/iio/adxl313.rst    | 196 ++++++++++
 Documentation/iio/index.rst      |   1 +
 drivers/iio/accel/adxl313.h      |  35 +-
 drivers/iio/accel/adxl313_core.c | 625 ++++++++++++++++++++++++++++++-
 drivers/iio/accel/adxl313_i2c.c  |   6 +
 drivers/iio/accel/adxl313_spi.c  |   6 +
 6 files changed, 859 insertions(+), 10 deletions(-)
 create mode 100644 Documentation/iio/adxl313.rst

-- 
2.39.5