linux-kernel - [PATCH v5 0/3] Add gpio support to Broadcom Cygnus SoC

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Date:	Thu, 11 Dec 2014 16:05:03 -0800
From:	Ray Jui <rjui@...adcom.com>
To:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	"Mark Rutland" <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	"Linus Walleij" <linus.walleij@...aro.org>,
	Alexandre Courbot <gnurou@...il.com>,
	Grant Likely <grant.likely@...aro.org>,
	Christian Daudt <bcm@...thebug.org>,
	Matt Porter <mporter@...aro.org>,
	Florian Fainelli <f.fainelli@...il.com>,
	Russell King <linux@....linux.org.uk>,
	Joe Perches <joe@...ches.com>, "Arnd Bergmann" <arnd@...db.de>
CC:	Scott Branden <sbranden@...adcom.com>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-gpio@...r.kernel.org>,
	<bcm-kernel-feedback-list@...adcom.com>,
	<devicetree@...r.kernel.org>, "Ray Jui" <rjui@...adcom.com>
Subject: [PATCH v5 0/3] Add gpio support to Broadcom Cygnus SoC

This patchset contains the initial GPIO support for the Broadcom Cygnus SoC.
Cygnus has 3 GPIO controllers: 1) the ASIU GPIO; 2) the chipCommonG GPIO;
and 3) the ALWAYS-ON GPIO. All 3 types of GPIO controllers are supported by
the same Cygnus GPIO driver

Changes from v4:
 - Use DT property "linux,gpio-base" to define GPIO base number
 - factorize common code to improve code readability and reduce code size
 - remove "bcm_" prefix on function and struct names
 - improve debugging prints
 - default GPIO_BCM_CYGNUS to y in Kconfig (it still depends on
   ARCH_BCM_CYGNUS). This way we do not need to select it from the
   arch/arm/mach-bcm/Kconfig
 - Get rid of redundant MAINTAINER entry for this driver. It will be maintained
   by Broadcom iProc/Cygnus maintainers
 - Update device tree document based on driver changes

Changes from v3:
 - Fix dt property tpyo
 - Fix incorrect GPIO compatible ID in device tree binding document example

Changes from v2:
 - Consolidate different compatible IDs into "brcm,cygnus-gpio"
 - Get rid of redundant "no-interrupt" property

Changes from v1:
 - Get rid of inline qualifier
 - Get rid of redundant check in the ISR
 - Other minor fixes to imrove code readability

Ray Jui (3):
  gpio: Cygnus: define Broadcom Cygnus GPIO binding
  gpio: Cygnus: add GPIO driver
  ARM: dts: enable GPIO for Broadcom Cygnus

 .../devicetree/bindings/gpio/brcm,cygnus-gpio.txt  |   87 +++
 arch/arm/boot/dts/bcm-cygnus.dtsi                  |   33 ++
 drivers/gpio/Kconfig                               |   12 +
 drivers/gpio/Makefile                              |    1 +
 drivers/gpio/gpio-bcm-cygnus.c                     |  613 ++++++++++++++++++++
 5 files changed, 746 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/brcm,cygnus-gpio.txt
 create mode 100644 drivers/gpio/gpio-bcm-cygnus.c

-- 
1.7.9.5

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