diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2019-01-25 21:59:11 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2019-04-23 16:02:13 +0200 |
| commit | 813e7d36f22762f89856048a32446c8972309566 (patch) | |
| tree | 90cd921732bce88d0726abac72a3e2114ee4d6cd /drivers/gpio/Kconfig | |
| parent | 5b978c10665973d8ee7050b03ef6e97013066b03 (diff) | |
gpio: ixp4xx: Add driver for the IXP4xx GPIO
This adds a driver for the IXP4xx GPIO block found in
the Intel XScale IXP4xx systems.
The GPIO part of this block is pretty straight-forward and
just uses the generic MMIO GPIO library.
The irqchip side of this driver is hierarchical where
the main irqchip will receive a processed level trigger
in response to the edge detector of the GPIO block,
so for this reason the v2 version of the irqdomain API
is used (as well as in the parent IXP4xx irqchip) and
masking, unmasking and setting up the type on IRQ
happens on several levels.
Currently this GPIO controller will grab the parent
irqdomain using a special function, but as the platform
move toward device tree probing, this will not be needed:
we can just look up the parent irqdomain from the device
tree.
Cc: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/Kconfig')
| -rw-r--r-- | drivers/gpio/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 3f50526a771f..a77b3b25a779 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -287,6 +287,19 @@ config GPIO_IOP If unsure, say N. +config GPIO_IXP4XX + bool "Intel IXP4xx GPIO" + depends on ARM # For <asm/mach-types.h> + depends on ARCH_IXP4XX + select GPIO_GENERIC + select IRQ_DOMAIN + select IRQ_DOMAIN_HIERARCHY + help + Say yes here to support the GPIO functionality of a number of Intel + IXP4xx series of chips. + + If unsure, say N. + config GPIO_LOONGSON bool "Loongson-2/3 GPIO support" depends on CPU_LOONGSON2 || CPU_LOONGSON3 |