diff options
| author |   Yixun Lan <dlan@gentoo.org> | 2025-04-08 23:11:20 +0800 |
|---|---|---|
| committer |   Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2025-04-08 18:56:19 +0200 |
| commit | 27986833e8e675b6c17654d13623590a46f9033e (patch) | |
| tree | 6103dd307f96e2cb75a9654254d6b22e9c2754d3 /drivers/gpio/gpiolib.c | |
| parent | Merge tag 'irqdomain-04-08-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into gpio/for-next (diff) | |
| download | wireguard-linux-27986833e8e675b6c17654d13623590a46f9033e.tar.xz wireguard-linux-27986833e8e675b6c17654d13623590a46f9033e.zip | |
gpiolib: support parsing gpio three-cell interrupts scheme
gpio irq which using three-cell scheme should always call
instance_match() function to find the correct irqdomain.
The select() function will be called with !DOMAIN_BUS_ANY,
so for specific gpio irq driver, it need to set bus token
explicitly, something like:
irq_domain_update_bus_token(girq->domain, DOMAIN_BUS_WIRED);
Signed-off-by: Yixun Lan <dlan@gentoo.org>
Link: https://lore.kernel.org/r/20250408-04-gpio-irq-threecell-v4-1-fd170d5e2d2b@gentoo.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Diffstat (limited to '')
| -rw-r--r-- | drivers/gpio/gpiolib.c | 22 |
1 files changed, 18 insertions, 4 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 8252a671d720..ed8397a88dea 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1507,9 +1507,8 @@ static int gpiochip_hierarchy_irq_domain_translate(struct irq_domain *d, unsigned int *type) { /* We support standard DT translation */ - if (is_of_node(fwspec->fwnode) && fwspec->param_count == 2) { - return irq_domain_translate_twocell(d, fwspec, hwirq, type); - } + if (is_of_node(fwspec->fwnode)) + return irq_domain_translate_twothreecell(d, fwspec, hwirq, type); /* This is for board files and others not using DT */ if (is_fwnode_irqchip(fwspec->fwnode)) { @@ -1811,11 +1810,26 @@ static void gpiochip_irq_unmap(struct irq_domain *d, unsigned int irq) irq_set_chip_data(irq, NULL); } +static int gpiochip_irq_select(struct irq_domain *d, struct irq_fwspec *fwspec, + enum irq_domain_bus_token bus_token) +{ + struct fwnode_handle *fwnode = fwspec->fwnode; + struct gpio_chip *gc = d->host_data; + unsigned int index = fwspec->param[0]; + + if (fwspec->param_count == 3 && is_of_node(fwnode)) + return of_gpiochip_instance_match(gc, index); + + /* Fallback for twocells */ + return (fwnode && (d->fwnode == fwnode) && (d->bus_token == bus_token)); +} + static const struct irq_domain_ops gpiochip_domain_ops = { .map = gpiochip_irq_map, .unmap = gpiochip_irq_unmap, + .select = gpiochip_irq_select, /* Virtually all GPIO irqchips are twocell:ed */ - .xlate = irq_domain_xlate_twocell, + .xlate = irq_domain_xlate_twothreecell, }; static struct irq_domain *gpiochip_simple_create_domain(struct gpio_chip *gc) |