[PATCH v4 0/2] iio: stm32 trigger: Add quadrature device and counter

[Benjamin Gaignard <benjamin.gaignard@linaro.org>]

A first encoder IIO driver (104-quad-8) with a count channel already exist.
STM32 driver have the same type of feature but with different counting modes.
Some parts, like counting direction (up/down) could be generalized so move the
corresponding documentation from driver file to sysfs-bus-iio.

version 4:
- fix indentation in documentation
- reword triggered description

version 3:
- fix typo in documentation
- change some functions names

version 2:
- since iio: Generalize counting direction modes commit of version has being
  pushed in iio.git testing branch I have remove it from this serie.
- split the original attribute in 2: one for quadrature modes and one for
  enable modes.
- add scale info
- change modes to more generic names to be able to merge them with 104-quad-8
  in the futur.


Benjamin Gaignard (2):
  iio: stm32 trigger: Add quadrature encoder device
  iio: stm32 trigger: Add counter enable modes

 .../ABI/testing/sysfs-bus-iio-timer-stm32          |  71 ++++-
 drivers/iio/trigger/stm32-timer-trigger.c          | 314 ++++++++++++++++++++-
 include/linux/mfd/stm32-timers.h                   |   2 +
 3 files changed, 377 insertions(+), 10 deletions(-)

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1.9.1