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From: Mario Six <mario.six@gdsys.cc>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v3 0/3] dm: gpio: Add driver for MPC85xx GPIO controller
Date: Fri, 13 May 2016 13:15:07 +0200	[thread overview]
Message-ID: <1463138110-18565-1-git-send-email-mario.six@gdsys.cc> (raw)

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

--
2.7.0.GIT

             reply	other threads:[~2016-05-13 11:15 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-13 11:15 Mario Six [this message]
2016-05-13 11:15 ` [U-Boot] [PATCH v3 1/3] dm: gpio: Add driver for MPC85XX GPIO controller Mario Six
2016-05-19  4:02   ` Simon Glass
2016-05-13 11:15 ` [U-Boot] [PATCH v3 2/3] dm: gpio: Add methods for open drain setting Mario Six
2016-05-13 11:15 ` [U-Boot] [PATCH v3 3/3] dm: gpio: Implement open drain for MPC85XX GPIO Mario Six
2016-05-13 11:50 ` [U-Boot] [PATCH v3 0/3] dm: gpio: Add driver for MPC85xx GPIO controller Joakim Tjernlund
2016-05-15 18:35   ` Mario Six

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