[U-Boot] [PATCH v3 0/3] dm: gpio: Add driver for MPC85xx GPIO controller

[Mario Six]

The functions for accessing GPIOs on MPC85xx are hardcoded in
arch/powerpc/include/asm/mpc85xx_gpio.h This leads to problems if another GPIO
controller supporting the driver model is to be used simultaneously.

Therefore, this patch moves the "static" functions into a DM-compatible driver,
and also introduces a set of functions into the GPIO uclass that expose the
controller's capability to switch individual GPIOs into open-drain-mode.

v3 also implements shadowing of the GPDAT register to work around a known issue
in some MPC85xx GPIO controllers (as pointed out by Joakim Tjernlund).

mario.six at gdsys.cc (3):
  dm: gpio: Add driver for MPC85XX GPIO controller
  dm: gpio: Add methods for open drain setting
  dm: gpio: Implement open drain for MPC85XX GPIO

 arch/powerpc/include/asm/arch-mpc85xx/gpio.h |   2 +
 arch/powerpc/include/asm/immap_85xx.h        |   2 +
 drivers/gpio/Kconfig                         |  25 ++++
 drivers/gpio/Makefile                        |   1 +
 drivers/gpio/gpio-uclass.c                   |  32 +++++
 drivers/gpio/mpc85xx_gpio.c                  | 206 +++++++++++++++++++++++++++
 include/asm-generic/gpio.h                   |  34 +++++
 7 files changed, 302 insertions(+)
 create mode 100644 drivers/gpio/mpc85xx_gpio.c

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2.7.0.GIT