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gpio: hisi: Convert to immutable irq_chip

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

The IRQ chip was unnamed which seems unwise, so we just
assign the name "HISI-GPIO".

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 08:45:56 +01:00 committed by Bartosz Golaszewski
parent 150a988035
commit 39bdd6bdad
1 changed files with 15 additions and 10 deletions
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25
drivers/gpio/gpio-hisi.c
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@ -37,7 +37,6 @@ struct hisi_gpio {
struct device *dev;
void __iomem *reg_base;
unsigned int line_num;
struct irq_chip irq_chip;
int irq;
};
@ -100,12 +99,14 @@ static void hisi_gpio_irq_set_mask(struct irq_data *d)
struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
hisi_gpio_write_reg(chip, HISI_GPIO_INTMASK_SET_WX, BIT(irqd_to_hwirq(d)));
gpiochip_disable_irq(chip, irqd_to_hwirq(d));
}
static void hisi_gpio_irq_clr_mask(struct irq_data *d)
{
struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
gpiochip_enable_irq(chip, irqd_to_hwirq(d));
hisi_gpio_write_reg(chip, HISI_GPIO_INTMASK_CLR_WX, BIT(irqd_to_hwirq(d)));
}
@ -191,20 +192,24 @@ static void hisi_gpio_irq_handler(struct irq_desc *desc)
chained_irq_exit(irq_c, desc);
}
static const struct irq_chip hisi_gpio_irq_chip = {
.name = "HISI-GPIO",
.irq_ack = hisi_gpio_set_ack,
.irq_mask = hisi_gpio_irq_set_mask,
.irq_unmask = hisi_gpio_irq_clr_mask,
.irq_set_type = hisi_gpio_irq_set_type,
.irq_enable = hisi_gpio_irq_enable,
.irq_disable = hisi_gpio_irq_disable,
.flags = IRQCHIP_IMMUTABLE,
GPIOCHIP_IRQ_RESOURCE_HELPERS,
};
static void hisi_gpio_init_irq(struct hisi_gpio *hisi_gpio)
{
struct gpio_chip *chip = &hisi_gpio->chip;
struct gpio_irq_chip *girq_chip = &chip->irq;
/* Set hooks for irq_chip */
hisi_gpio->irq_chip.irq_ack = hisi_gpio_set_ack;
hisi_gpio->irq_chip.irq_mask = hisi_gpio_irq_set_mask;
hisi_gpio->irq_chip.irq_unmask = hisi_gpio_irq_clr_mask;
hisi_gpio->irq_chip.irq_set_type = hisi_gpio_irq_set_type;
hisi_gpio->irq_chip.irq_enable = hisi_gpio_irq_enable;
hisi_gpio->irq_chip.irq_disable = hisi_gpio_irq_disable;
girq_chip->chip = &hisi_gpio->irq_chip;
gpio_irq_chip_set_chip(girq_chip, &hisi_gpio_irq_chip);
girq_chip->default_type = IRQ_TYPE_NONE;
girq_chip->num_parents = 1;
girq_chip->parents = &hisi_gpio->irq;