[PATCH v2 0/3] AUXADC: Mediatek auxadc driver

[Zhiyong Tao <zhiyong.tao@mediatek.com>]

This series includes three patches:
1.Change the device tree binding documentation.
2.Add auxadc driver based on linux iio.
3.Add auxadc nodes in the mediatek MT2701 dtsi file.

changes in patch 2:
1).Change the file name mt65xx_auxadc.c to mt6577_auxadc.c.
2).Add 'depends on ARCH_MEDIATEK || COMPILE_TEST and HAS_IOMEM' for MEDIATEK_MT65XX_AUXADC config.
3).Add check case for return value of 'readl_poll_timeout'.
4).Remove returning 1 and 0 for SCALE and OFFSET. use channel type 'IIO_CHAN_INFO_PROCESSED' instead of 'IIO_CHAN_INFO_RAW'.
5).Remove 'IIO_CHAN_INFO_OFFSET' and 'IIO_CHAN_INFO_SCALE' in 'MT65XX_AUXADC_CHANNEL' channel type.
6).Add check case when auxadc power on failure. if auxadc power on failure, clk_disable_unprepare should be executed.
7).Put 'platform_set_drvdata' before 'iio_device_register'.
8).Fix coding style and spelling error.

Zhiyong Tao (3):
  dt-bindings: auxadc: Add binding document for Mediatek auxadc.
  auxadc: Add Mediatek auxadc driver for mt2701.
  arm: dts: auxadc: Add auxadc node.

 .../devicetree/bindings/iio/adc/mt65xx_auxadc.txt  |   27 ++
 .../devicetree/bindings/soc/mediatek/auxadc.txt    |   21 --
 arch/arm/boot/dts/mt2701.dtsi                      |    9 +
 drivers/iio/adc/Kconfig                            |   13 +
 drivers/iio/adc/Makefile                           |    1 +
 drivers/iio/adc/mt6577_auxadc.c                    |  301 ++++++++++++++++++++
 6 files changed, 351 insertions(+), 21 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/mt65xx_auxadc.txt
 delete mode 100644 Documentation/devicetree/bindings/soc/mediatek/auxadc.txt
 create mode 100644 drivers/iio/adc/mt6577_auxadc.c