The ThunderX/OCTEON-TX 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 v6:
- Trivial rebase to v4.13.0-rc4: Omit device tree bindings patch,
which was already merged, and fix MAINTAINERS patch collision.
Changes from v5:
- Added .irq_{request,release}_resources() functions to irq_chip.
- Quit calling irq_set_irq_type() in the irq_map() function.
- Added more error condition checking to irq_domain_{push,pop}_irq()
Changes from v4:
- Rebased to post-v4.10 to support .set_config() function.
- Added .get_direction() support.
- Added PIN_CONFIG_INPUT_DEBOUNCE support.
- Removed some improper use of ENOSYS.
Changes from v3:
- Add some "depends on" to the driver Kconfig to avoid build errors
in some architectures when doing COMPILE_TEST builds.
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 (5):
genirq: Export more irq_chip_*_parent() functions.
genirq: Add handle_fasteoi_{level,edge}_irq flow handlers.
irqdomain: Add irq_domain_{push,pop}_irq() functions.
gpio: Add gpio driver support for ThunderX and OCTEON-TX
MAINTAINERS: Add entry for THUNDERX GPIO Driver.
MAINTAINERS | 5 +
drivers/gpio/Kconfig | 8 +
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-thunderx.c | 639 +++++++++++++++++++++++++++++++++++++++++++
include/linux/irq.h | 2 +
include/linux/irqdomain.h | 3 +
kernel/irq/chip.c | 105 +++++++
kernel/irq/irqdomain.c | 178 ++++++++++++
8 files changed, 941 insertions(+)
create mode 100644 drivers/gpio/gpio-thunderx.c
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1.8.3.1
