[PATCH v2 0/1] counter: cros_ec: Add sync sensor driver

Some chromebook EC provides a counter to get all vsync coming from the back
camera.
This series introduces a patch coming from chromebook kernel 4.4 designed as an
IIO counter. As IIO counter will be deprecated in favor of counter, I rebase the
original patch and support the new counter API.

The serie need to be merged after https://lkml.org/lkml/2019/7/9/305

Changes since v1:
- Drop code related to IIO_COUNT
- Add external attribute to the counter driver
- Add cros_ec_sensors_sync.c to MAINTAINERS file

Gwendal Grignou (1):
  counter: cros_ec: Add synchronization sensor

 Documentation/driver-api/generic-counter.rst  |   3 +
 MAINTAINERS                                   |   7 +
 drivers/counter/Kconfig                       |   9 +
 drivers/counter/Makefile                      |   1 +
 drivers/counter/counter.c                     |   2 +
 drivers/counter/cros_ec_sensors_sync.c        | 208 ++++++++++++++++++
 .../cros_ec_sensors/cros_ec_sensors_core.c    |   1 +
 drivers/mfd/cros_ec_dev.c                     |   3 +
 include/linux/counter.h                       |   1 +
 9 files changed, 235 insertions(+)
 create mode 100644 drivers/counter/cros_ec_sensors_sync.c

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2.20.1