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gpio: cadence: Convert to immutable irq_chip 

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 08:45:55 +01:00 committed by Bartosz Golaszewski
parent b11ce7e481
commit 150a988035
1 changed files with 7 additions and 3 deletions
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10
drivers/gpio/gpio-cadence.c
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@ -70,6 +70,7 @@ static void cdns_gpio_irq_mask(struct irq_data *d)
struct cdns_gpio_chip *cgpio = gpiochip_get_data(chip);
iowrite32(BIT(d->hwirq), cgpio->regs + CDNS_GPIO_IRQ_DIS);
gpiochip_disable_irq(chip, irqd_to_hwirq(d));
}
static void cdns_gpio_irq_unmask(struct irq_data *d)
@ -77,6 +78,7 @@ static void cdns_gpio_irq_unmask(struct irq_data *d)
struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
struct cdns_gpio_chip *cgpio = gpiochip_get_data(chip);
gpiochip_enable_irq(chip, irqd_to_hwirq(d));
iowrite32(BIT(d->hwirq), cgpio->regs + CDNS_GPIO_IRQ_EN);
}
@ -138,11 +140,13 @@ static void cdns_gpio_irq_handler(struct irq_desc *desc)
chained_irq_exit(irqchip, desc);
}
static struct irq_chip cdns_gpio_irqchip = {
static const struct irq_chip cdns_gpio_irqchip = {
.name = "cdns-gpio",
.irq_mask = cdns_gpio_irq_mask,
.irq_unmask = cdns_gpio_irq_unmask,
.irq_set_type = cdns_gpio_irq_set_type
.irq_set_type = cdns_gpio_irq_set_type,
.flags = IRQCHIP_IMMUTABLE,
GPIOCHIP_IRQ_RESOURCE_HELPERS,
};
static int cdns_gpio_probe(struct platform_device *pdev)
@ -222,7 +226,7 @@ static int cdns_gpio_probe(struct platform_device *pdev)
struct gpio_irq_chip *girq;
girq = &cgpio->gc.irq;
girq->chip = &cdns_gpio_irqchip;
gpio_irq_chip_set_chip(girq, &cdns_gpio_irqchip);
girq->parent_handler = cdns_gpio_irq_handler;
girq->num_parents = 1;
girq->parents = devm_kcalloc(&pdev->dev, 1,