This patches are based on Sebastian Reichel work [1] which convert twl4030_madc mfd to iio
framework. Patches was tested on gta04 board. twl4030_madc_battery driver is converted in
first patch to iio consumer and in next patches is added support for devicetree.

Changes from V1:
- use iio_read_channel_processed instead iio_read_channel_processed
- convert probe to use devm_ as part of adding error handling for iio
- free iio channels on error and on module removal

[1] - https://lkml.org/lkml/2014/2/26/482

Marek Belisko (3):
  power: twl4030-madc-battery: Convert to iio consumer.
  power: twl4030_madc_battery: Add device tree support.
  Documentation: DT: Document twl4030-madc-battery bindings.

 .../bindings/power_supply/twl4030_madc_battery.txt |  43 ++++++
 drivers/power/twl4030_madc_battery.c               | 155 ++++++++++++++++-----
 2 files changed, 165 insertions(+), 33 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/power_supply/twl4030_madc_battery.txt

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1.8.3.2