This patchset adds a driver support for Cadence GPIO controller.

Number of supported lines is configurable.
The driver initializes all pins as inputs in probe().
Currently it only supports level-sensitive interrupts.

The interrupts controller was tested with I2C and SPI IPs
acting as interrupt sources.

Changes since V2:
	Added spinlocks in request, free and irq_set_type functions.

Changes since V1:
	Switched to generic GPIO infrastructure.
	Redesigned interrupts, now uses chained irqchip.
	Drop support for edge-sensitive interrupts.
	Restore bypass settings at unexport/remove.

Jan Kotas (2):
  dt-bindings: gpio: Add bindings for Cadence GPIO
  gpio: Add Cadence GPIO driver

 .../devicetree/bindings/gpio/cdns,gpio.txt         |  44 ++++
 drivers/gpio/Kconfig                               |   8 +
 drivers/gpio/Makefile                              |   1 +
 drivers/gpio/gpio-cadence.c                        | 291 +++++++++++++++++++++
 4 files changed, 344 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/cdns,gpio.txt
 create mode 100644 drivers/gpio/gpio-cadence.c

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2.15.0