[PATCH 0/3] XRA1403,gpio - add XRA1403 gpio expander driver

[Nandor Han]

The patchset will add a driver to support basic functionality for
XRA1403 device. Features supported:
	- configure gpin as input/out
	- get/set gpio status

Documentation: A gpio-xra1403.txt file was added to document the DTS
	bindings related to driver.

Testing:

1. XRA1403 connected to iMX53 MCU
2. Export gpio from userspace
3. Verify that corresponding gpio directories are created
   in `/sys/class/gpio/gpioXX`
4. Export gpios from first and second bank as output
5. Set the output gpio pin to high/low and verify with the 
   oscilloscope that gpio status is according with the configured
   value.

Nandor Han (3):
  gpio - Add EXAR XRA1403 SPI GPIO expander driver
  doc,dts - add XRA1403 DTS binding documentation
  Add XRA1403 support to MAINTAINERS file

 .../devicetree/bindings/gpio/gpio-xra1403.txt      |  37 +++
 .../devicetree/bindings/vendor-prefixes.txt        |   1 +
 MAINTAINERS                                        |   8 +
 drivers/gpio/Kconfig                               |   5 +
 drivers/gpio/Makefile                              |   1 +
 drivers/gpio/gpio-xra1403.c                        | 252 +++++++++++++++++++++
 6 files changed, 304 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/gpio-xra1403.txt
 create mode 100644 drivers/gpio/gpio-xra1403.c

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2.10.1