[PATCH v2 0/4] Add AXP209 GPIO driver

[Maxime Ripard]

Hi,

The axp209 PMIC used in combination to some Allwinner SoCs has a bunch
of GPIOs accessible. Some boards use these to control their backlight
or a few LEDs.

There's supposed to be 4 of them, but the fourth one has a different
configuration register scheme, and I couldn't find any board that was
using this GPIO. It will be probably be supported eventually, but
until then, we support only the first 3 GPIOs.

Let me know what you think,
Maxime

Changes from v1:
  - Use gpiochip_add_data and gpiochip_get_data
  - Drop unneeded headers
  - Make sure gpio_get returns 0 or 1
  - Made sure it compiles
  - Rebased on linux-next

Maxime Ripard (4):
  gpio: Add AXP209 GPIO driver
  mfd: axp20x: Add AXP209 GPIO driver to the mfd
  ARM: dt: axp209: Add AXP209 GPIO driver
  ARM: sun5i: chip: Add status LED

 .../devicetree/bindings/gpio/gpio-axp209.txt       |  30 ++++
 arch/arm/boot/dts/axp209.dtsi                      |   6 +
 arch/arm/boot/dts/sun5i-r8-chip.dts                |  10 ++
 drivers/gpio/Kconfig                               |   6 +
 drivers/gpio/Makefile                              |   1 +
 drivers/gpio/gpio-axp209.c                         | 162 +++++++++++++++++++++
 drivers/mfd/axp20x.c                               |   3 +
 7 files changed, 218 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/gpio-axp209.txt
 create mode 100644 drivers/gpio/gpio-axp209.c

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2.9.0