linux-kernel - [RFC PATCH] Add pin control driver for Wondermedia SoCS

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Date:	Fri, 15 Feb 2013 15:48:53 +1300
From:	Tony Prisk <linux@...sktech.co.nz>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	linux-kernel@...r.kernel.org, grant.likely@...retlab.ca,
	linus.walleij@...aro.org, Tony Prisk <linux@...sktech.co.nz>
Subject: [RFC PATCH] Add pin control driver for Wondermedia SoCS

Before I get all carried away and start filling in all the data for
this driver, I was hoping someone (or a few people) could review the
basic design in case it requires changes to the data structures.

This driver is based on pinctrl-bcm2835.c as it seems to be similar in
design. The pin controller on Wondermedia SoC's only allows each pin to
either be a GPIO or to be its 'alternate' function. Functions cannot be
remapped to any other pin.

I have seperated out the data from the code as there are several SoC's
to support and each has it's own variation of registers / pin layout.
I borrowed this part of the design from the Tegra pinctrl driver.

Regards
Tony Prisk

Tony Prisk (1):
  pinctrl: gpio: vt8500: Add pin control driver for Wondermedia SoCs

 arch/arm/Kconfig                   |    4 +-
 arch/arm/boot/dts/wm8850-w70v2.dts |   15 +
 arch/arm/boot/dts/wm8850.dtsi      |    7 +-
 arch/arm/mach-vt8500/Kconfig       |    1 +
 drivers/pinctrl/Kconfig            |   10 +
 drivers/pinctrl/Makefile           |    2 +
 drivers/pinctrl/pinctrl-wm8850.c   |  166 +++++++++++
 drivers/pinctrl/pinctrl-wmt.c      |  565 ++++++++++++++++++++++++++++++++++++
 drivers/pinctrl/pinctrl-wmt.h      |   73 +++++
 9 files changed, 840 insertions(+), 3 deletions(-)
 create mode 100644 drivers/pinctrl/pinctrl-wm8850.c
 create mode 100644 drivers/pinctrl/pinctrl-wmt.c
 create mode 100644 drivers/pinctrl/pinctrl-wmt.h

-- 
1.7.9.5

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