[U-Boot] [PATCH v4 0/4] 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/v4 also implement shadowing of the GPDAT register to work around a known
issue in some MPC85xx GPIO controllers (as pointed out by Joakim Tjernlund).

Furthermore, v4 adds tests for the open drain setting feature and extends the
sandbox GPIO driver accordingly.

Mario Six (4):
  dm: gpio: Add driver for MPC85XX GPIO controller
  dm: gpio: Add methods for open drain setting
  dm: gpio: Implement open drain for MPC85XX GPIO
  dm: test: Add GPIO open drain tests

 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                  | 228 +++++++++++++++++++++++++++
 drivers/gpio/sandbox.c                       |  35 ++++
 include/asm-generic/gpio.h                   |  34 ++++
 test/dm/gpio.c                               |   7 +
 9 files changed, 366 insertions(+)
 create mode 100644 drivers/gpio/mpc85xx_gpio.c

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2.7.0.GIT