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| author |   Doug Berger <opendmb@gmail.com> | 2017-10-24 12:54:50 -0700 |
|---|---|---|
| committer |   Linus Walleij <linus.walleij@linaro.org> | 2017-10-31 10:34:40 +0100 |
| commit | 0ba31dc201deb4f47277d7ff676b45da31c530e4 (patch) | |
| tree | bba6d82d871dabab3374764818c6bec6eb89cdd5 /drivers/gpio/Kconfig | |
| parent | gpio: brcmstb: correct the configuration of level interrupts (diff) | |
| download | linux-dev-0ba31dc201deb4f47277d7ff676b45da31c530e4.tar.xz linux-dev-0ba31dc201deb4f47277d7ff676b45da31c530e4.zip | |
gpio: brcmstb: consolidate interrupt domains
The GPIOLIB IRQ chip helpers were very appealing, but badly broke
the 1:1 mapping between a GPIO controller's device_node and its
interrupt domain.
When another device-tree node references a GPIO device as its
interrupt parent, the irq_create_of_mapping() function looks for
the irq domain of the GPIO device and since all bank irq domains
reference the same GPIO device node it always resolves to the irq
domain of the first bank regardless of which bank the number of
the GPIO should resolve. This domain can only map hwirq numbers
0-31 so interrupts on GPIO above that can't be mapped by the
device-tree.
This commit effectively reverts the patch from Gregory Fong [1]
that was accepted upstream and replaces it with a consolidated
irq domain implementation with one larger interrupt domain per
GPIO controller instance spanning multiple GPIO banks based on
an earlier patch [2] also submitted by Gregory Fong.
[1] https://patchwork.kernel.org/patch/6921561/
[2] https://patchwork.kernel.org/patch/6347811/
Fixes: 19a7b6940b78 ("gpio: brcmstb: Add interrupt and wakeup source support")
Signed-off-by: Doug Berger <opendmb@gmail.com>
Reviewed-by: Gregory Fong <gregory.0xf0@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/Kconfig')
| -rw-r--r-- | drivers/gpio/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index e7f3f39e69df..f002edda555b 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -139,7 +139,7 @@ config GPIO_BRCMSTB default y if (ARCH_BRCMSTB || BMIPS_GENERIC) depends on OF_GPIO && (ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST) select GPIO_GENERIC - select GPIOLIB_IRQCHIP + select IRQ_DOMAIN help Say yes here to enable GPIO support for Broadcom STB (BCM7XXX) SoCs. |