[PATCH 0/5] Introduce STMFX I2C GPIO expander

From: Amelie Delaunay
Date: Wed Apr 11 2018 - 05:48:07 EST


This series adds support for STMicroelectronics Multi-Function eXpander
(STMFX) GPIO expander, used on some STM32 discovery and evaluation boards.

STMFX is an STM32L152 based I2C slave controller, whose firmware embeds an
I/O expansion feature, offering 24 GPIOs.

STMFX pinctrl/GPIO driver provides a GPIO interface supporting inputs and
outputs, and a pinctrl interface supporting push-pull and open-drain
configuration.
STMFX GPIO expander can also be used as interrupt controller.

Previous series [1], based on MFD and GPIO frameworks, is abandoned and
completely reworked.

[1] https://lkml.org/lkml/2018/2/8/300

Amelie Delaunay (5):
dt-bindings: pinctrl: document the STMFX pinctrl bindings
pinctrl: Add STMFX GPIO expander Pinctrl/GPIO driver
ARM: dts: stm32: add STMFX pinctrl/gpio expander support on
stm32746g-eval
ARM: dts: stm32: add orange and blue leds on stm32746g-eval
ARM: dts: stm32: add joystick support on stm32746g-eval

.../devicetree/bindings/pinctrl/pinctrl-stmfx.txt | 118 +++
arch/arm/boot/dts/stm32746g-eval.dts | 66 ++
drivers/pinctrl/Kconfig | 13 +
drivers/pinctrl/Makefile | 1 +
drivers/pinctrl/pinctrl-stmfx.c | 985 +++++++++++++++++++++
5 files changed, 1183 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pinctrl/pinctrl-stmfx.txt
create mode 100644 drivers/pinctrl/pinctrl-stmfx.c

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