[PATCH v10 0/2] drivers/gpio: Altera soft IP GPIO driver

[thloh]

From: Tien Hock Loh <thloh@xxxxxxxxxx>

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.

v10:
Updated conflicting device tree parameters
Removed unused headers
Used macro instead of magic numbers for ngpio
Code readability cleanup using ?: and temporal variables
Removed leftover garbage and unnecessary function calls
Checked bgpio_init but unusable because Altera GPIO may not be a multiple of 8 bits

v9:
Removed duplicated initialization on set_type using temporals to improve code readability in calling generic_handle_irq Using ?: ternary to reduce code size

v8:
Using for_each_set_bit
added const for struct definition
removed naggy pr_err
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                               |  10 +
 drivers/gpio/Makefile                              |   1 +
 drivers/gpio/gpio-altera.c                         | 374 +++++++++++++++++++++
 5 files changed, 434 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/gpio-altera.txt
 create mode 100644 drivers/gpio/gpio-altera.c

-- 
1.7.11.GIT

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