linux-kernel - [PATCH v8 0/2] drivers/gpio: Altera soft IP GPIO driver

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Date:	Wed, 24 Dec 2014 00:22:23 -0800
From:	<thloh@...era.com>
To:	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>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"David S. Miller" <davem@...emloft.net>,
	"Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
	Joe Perches <joe@...ches.com>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	Antti Palosaari <crope@....fi>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-gpio@...r.kernel.org>
CC:	Dinh Nguyen <dinguyen@...era.com>, Tien Hock Loh <thloh@...era.com>
Subject: [PATCH v8 0/2] drivers/gpio: Altera soft IP GPIO driver

From: Tien Hock Loh <thloh@...era.com>

Adds a new device tree binding and driver for Altera soft GPIO IP.
The driver is able to do read/write and allows GPIO to be a interrupt
controller.

Tested on Altera GHRD on interrupt handling and IO.

v8:
Using for_each_set_bit
added const for struct definition
removed naggy pr_err
changed from
sort alpha header
remove unused macros
use fixed width data types instead of unsigned long
whitespace issue fixes
removed _relaxed function for better compatibility across different CPU
changed irq_create_mapping to platform_get_irq
updated implementation to use gpiochip_irqchip_add
reserve interrupt-cells number 2 in device tree binding for future use
remove confusing sections on devicetree bindings
Added tristate Kconfig help text

v7:
used dev_warn instead of pr_warn
clean up unnecesarry if else indentation

v6:
Added irq_startup and irq_shutdown
changed bitwise clamping style
cleanup bitwise operation to improve readability
change naming of mapped irqs from virq to mapped_irq

v5:
dispose irq_domain mapping correctly
update optional binding description in binding docs

v4:
added vendor prefix to devicetree binding for IP specific properties
using MMIO GPIO helper library instead of manually map PIO to memory
altera_gpio_chip inline struct documentation to kerneldoc
using dev_ print to print a better failure message

v2, v3:
Do not reference NO_IRQ
Updated irq_set_type to only allow the hardware configured irq type


Tien Hock Loh (2):
  drivers/gpio: Altera soft IP GPIO driver device tree binding
  drivers/gpio: Altera soft IP GPIO driver

 .../devicetree/bindings/gpio/gpio-altera.txt       |   43 ++
 MAINTAINERS                                        |    6 +
 drivers/gpio/Kconfig                               |    8 +
 drivers/gpio/Makefile                              |    1 +
 drivers/gpio/gpio-altera.c                         |  410 ++++++++++++++++++++
 5 files changed, 468 insertions(+), 0 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/gpio/gpio-altera.txt
 create mode 100644 drivers/gpio/gpio-altera.c

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