[RFC 0/1] Add new sysfs ABI for chromebook devices

[Fabien Lahoudere <fabien.lahoudere@collabora.com>]

Chromebooks embedded controller (EC) provides new field in the 3rd version of 
its protocol. Those values need to be exposed as sysfs entries.

Minimum and maximum frequencies may probably be a standard iio ABI.
There is an existing ABI (sampling_frequency_available) but only for discrete 
set of values.
We have different possible solution and I want to ask interested people for the 
best one:
1. we keep the ABI proposed in this RFC (in the chromebook specific code)
2. we move min and max freq as 2 different standard ABI
3. we add a new standard iio ABI to set a range (sampling_frequency_range)
4. we change the 'sampling_frequency_available' ABI to return discrete values 
like '2 4 6 8' or a range like '[2 - 8]'
5. the solution I didn't think about

Thanks

Gwendal Grignou (1):
  iio: common: cros_ec_sensors: add extra sensor API

 .../ABI/testing/sysfs-bus-iio-cros-ec         |  24 ++++
 .../cros_ec_sensors/cros_ec_sensors_core.c    | 126 +++++++++++++++++-
 .../linux/iio/common/cros_ec_sensors_core.h   |   7 +
 include/linux/mfd/cros_ec_commands.h          |  21 +++
 4 files changed, 177 insertions(+), 1 deletion(-)

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2.19.2