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gpio: pcie-idio-24: 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: William Breathitt Gray <william.gray@linaro.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 08:46:05 +01:00 committed by Bartosz Golaszewski
parent 141d552756
commit 33886f9257
1 changed files with 9 additions and 3 deletions
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12
drivers/gpio/gpio-pcie-idio-24.c
View file

@ -396,6 +396,8 @@ static void idio_24_irq_mask(struct irq_data *data)
}
raw_spin_unlock_irqrestore(&idio24gpio->lock, flags);
gpiochip_disable_irq(chip, irqd_to_hwirq(data));
}
static void idio_24_irq_unmask(struct irq_data *data)
@ -408,6 +410,8 @@ static void idio_24_irq_unmask(struct irq_data *data)
const unsigned long bank_offset = bit_offset / 8;
unsigned char cos_enable_state;
gpiochip_enable_irq(chip, irqd_to_hwirq(data));
raw_spin_lock_irqsave(&idio24gpio->lock, flags);
prev_irq_mask = idio24gpio->irq_mask >> bank_offset * 8;
@ -437,12 +441,14 @@ static int idio_24_irq_set_type(struct irq_data *data, unsigned int flow_type)
return 0;
}
static struct irq_chip idio_24_irqchip = {
static const struct irq_chip idio_24_irqchip = {
.name = "pcie-idio-24",
.irq_ack = idio_24_irq_ack,
.irq_mask = idio_24_irq_mask,
.irq_unmask = idio_24_irq_unmask,
.irq_set_type = idio_24_irq_set_type
.irq_set_type = idio_24_irq_set_type,
.flags = IRQCHIP_IMMUTABLE,
GPIOCHIP_IRQ_RESOURCE_HELPERS,
};
static irqreturn_t idio_24_irq_handler(int irq, void *dev_id)
@ -535,7 +541,7 @@ static int idio_24_probe(struct pci_dev *pdev, const struct pci_device_id *id)
idio24gpio->chip.set_multiple = idio_24_gpio_set_multiple;
girq = &idio24gpio->chip.irq;
girq->chip = &idio_24_irqchip;
gpio_irq_chip_set_chip(girq, &idio_24_irqchip);
/* This will let us handle the parent IRQ in the driver */
girq->parent_handler = NULL;
girq->num_parents = 0;