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gpio: ath79: Convert to immutable irq_chip

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Convert the driver to immutable irq-chip with a bit of
intuition.

Cc: Marc Zyngier <maz@kernel.org>
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
This commit is contained in:
Linus Walleij 2023-03-09 08:45:54 +01:00 committed by Bartosz Golaszewski
parent c5dcf76805
commit b11ce7e481
1 changed files with 6 additions and 2 deletions
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8
drivers/gpio/gpio-ath79.c
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@ -71,6 +71,7 @@ static void ath79_gpio_irq_unmask(struct irq_data *data)
u32 mask = BIT(irqd_to_hwirq(data));
unsigned long flags;
gpiochip_enable_irq(&ctrl->gc, irqd_to_hwirq(data));
raw_spin_lock_irqsave(&ctrl->lock, flags);
ath79_gpio_update_bits(ctrl, AR71XX_GPIO_REG_INT_MASK, mask, mask);
raw_spin_unlock_irqrestore(&ctrl->lock, flags);
@ -85,6 +86,7 @@ static void ath79_gpio_irq_mask(struct irq_data *data)
raw_spin_lock_irqsave(&ctrl->lock, flags);
ath79_gpio_update_bits(ctrl, AR71XX_GPIO_REG_INT_MASK, mask, 0);
raw_spin_unlock_irqrestore(&ctrl->lock, flags);
gpiochip_disable_irq(&ctrl->gc, irqd_to_hwirq(data));
}
static void ath79_gpio_irq_enable(struct irq_data *data)
@ -169,13 +171,15 @@ static int ath79_gpio_irq_set_type(struct irq_data *data,
return 0;
}
static struct irq_chip ath79_gpio_irqchip = {
static const struct irq_chip ath79_gpio_irqchip = {
.name = "gpio-ath79",
.irq_enable = ath79_gpio_irq_enable,
.irq_disable = ath79_gpio_irq_disable,
.irq_mask = ath79_gpio_irq_mask,
.irq_unmask = ath79_gpio_irq_unmask,
.irq_set_type = ath79_gpio_irq_set_type,
.flags = IRQCHIP_IMMUTABLE,
GPIOCHIP_IRQ_RESOURCE_HELPERS,
};
static void ath79_gpio_irq_handler(struct irq_desc *desc)
@ -274,7 +278,7 @@ static int ath79_gpio_probe(struct platform_device *pdev)
/* Optional interrupt setup */
if (!np || of_property_read_bool(np, "interrupt-controller")) {
girq = &ctrl->gc.irq;
girq->chip = &ath79_gpio_irqchip;
gpio_irq_chip_set_chip(girq, &ath79_gpio_irqchip);
girq->parent_handler = ath79_gpio_irq_handler;
girq->num_parents = 1;
girq->parents = devm_kcalloc(dev, 1, sizeof(*girq->parents),