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Subject[RFCv3 0/7] Convert twl4030-madc to IIO API and add DT support

This is RFCv3 for converting twl4030-madc to the IIO API and
adding DT support. The patchset compiles and has been tested
on my Nokia N900.

Changes since RFCv2:
* Use "--find-renames" for the move from mfd/ to iio/adc/ ;)
* Added Acked-by from Lee Jones (MFD subsystem maintainer)
* Fixed issue found by Joe Perches
- twl4030_madc_request.do_avg should be bool instead of u16
* Fixed issues found by Peter Meerwald
- some style issues (e.g. /** instead of /*)
- typos
- usage of u16 read/write
* Tested with converted rx51-battery driver on Nokia N900

* Remove twl4030-madc-hwmon in favour of iio-hwmon
This driver is currently only used by board-omap3beagle.c
and board-rx51-peripherals.c. The instanciation in the
rx51 boardcode is a bug, since actually only twl4030-madc
is needed. Thus board-omap3beagle.c needs to be updated to
iio-hwmon and board-rx51-peripherals.c to twl4030-madc.
Both tasks are pretty trivial and twl4030-madc-hwmon can
be removed afterwards :)
* Update twl4030-madc-battery to the IIO API. I guess Marek
will do this update in the near future, since he is currently
writing DT bindings for the driver.
* I updated twl4030-madc-battery already and will send it
in a separate patchset.
* Once all of the above steps happened the old API can be
removed from the driver, which allows some more cleanups.

-- Sebastian

Sebastian Reichel (7):
mfd: twl4030-madc: Use managed resources
mfd: twl4030-madc: Add DT support and convert to IIO framework
mfd: twl4030-madc: Cleanup driver
mfd: twl-core: Add twl_i2c_read/write_u16
mfd: twl4030-madc: Use twl_i2c_read/write_u16 for 16 bit registers
Documentation: DT: Document twl4030-madc binding
mfd: twl4030-madc: Move driver to drivers/iio/adc

.../devicetree/bindings/iio/adc/twl4030-madc.txt | 24 ++
drivers/iio/adc/Kconfig | 10 +
drivers/iio/adc/Makefile | 1 +
drivers/{mfd => iio/adc}/twl4030-madc.c | 278 +++++++++++++--------
drivers/mfd/Kconfig | 10 -
drivers/mfd/Makefile | 1 -
include/linux/i2c/twl.h | 12 +
include/linux/i2c/twl4030-madc.h | 2 +-
8 files changed, 224 insertions(+), 114 deletions(-)
create mode 100644 Documentation/devicetree/bindings/iio/adc/twl4030-madc.txt
rename drivers/{mfd => iio/adc}/twl4030-madc.c (77%)


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