Per the Subject: Add driver for ThunderX and OCTEON-TX SoCs

This GPIO hardware looks like a PCIe device, with the interrupt signal
from each GPIO line being routed to a dedicated MSI-X.  This interrupt
routing requires that we add some custom processing to the beginning
of the MSI-X irqdomain hierarchy.


Changes from v2:

 - in 4/6: Added Rob Harring's Acked-by

 - Added three patches to genirq/irqdomain to support interrupt code
   in the driver.

 - Rewrite irq code in driver to use irqdomain hierarchy.

 - Other naming and style changes as recommended by Linus Walleij.

Changes from v1:

 - in 1/3: Addressed Rob Harring's comments.

 - in 2/3: Trivial cleanups found in internal review + add some
   comments.

David Daney (6):
  genirq: Export more irq_chip_*_parent() functions.
  genirq: Add handle_fasteoi_{level,edge}_irq flow handlers.
  irqdomain: Add irq_domain_{push,pop}_irq() functions.
  dt-bindings: gpio: Add binding documentation for gpio-thunderx
  gpio: Add gpio driver support for ThunderX and OCTEON-TX
  MAINTAINERS: Add entry for THUNDERX GPIO Driver.

 .../devicetree/bindings/gpio/gpio-thunderx.txt     |  27 ++
 MAINTAINERS                                        |   5 +
 drivers/gpio/Kconfig                               |   7 +
 drivers/gpio/Makefile                              |   1 +
 drivers/gpio/gpio-thunderx.c                       | 490 +++++++++++++++++++++
 include/linux/irq.h                                |   2 +
 include/linux/irqdomain.h                          |   3 +
 kernel/irq/chip.c                                  | 105 +++++
 kernel/irq/irqdomain.c                             | 137 ++++++
 9 files changed, 777 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/gpio/gpio-thunderx.txt
 create mode 100644 drivers/gpio/gpio-thunderx.c

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1.8.3.1