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pinctrl: at91: Make the irqchip immutable

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To help gpiolib not fiddle around with the internals of the irqchip
flag the chip as immutable, adding the calls into the gpiolib core
required to do so.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230216-gpio-at91-immutable-v2-1-326ef362dbc7@kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Mark Brown 2023-03-07 12:51:27 +00:00 committed by Linus Walleij
parent f7fc5768e5
commit d61955da32
1 changed files with 24 additions and 1 deletions
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25
drivers/pinctrl/pinctrl-at91.c
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@ -1526,6 +1526,20 @@ static void at91_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
#define at91_gpio_dbg_show NULL
#endif
static int gpio_irq_request_resources(struct irq_data *d)
{
struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(d);
return gpiochip_lock_as_irq(&at91_gpio->chip, irqd_to_hwirq(d));
}
static void gpio_irq_release_resources(struct irq_data *d)
{
struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(d);
gpiochip_unlock_as_irq(&at91_gpio->chip, irqd_to_hwirq(d));
}
/* Several AIC controller irqs are dispatched through this GPIO handler.
* To use any AT91_PIN_* as an externally triggered IRQ, first call
* at91_set_gpio_input() then maybe enable its glitch filter.
@ -1545,6 +1559,9 @@ static void gpio_irq_mask(struct irq_data *d)
struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(d);
void __iomem *pio = at91_gpio->regbase;
unsigned mask = 1 << d->hwirq;
unsigned gpio = irqd_to_hwirq(d);
gpiochip_disable_irq(&at91_gpio->chip, gpio);
if (pio)
writel_relaxed(mask, pio + PIO_IDR);
@ -1555,6 +1572,9 @@ static void gpio_irq_unmask(struct irq_data *d)
struct at91_gpio_chip *at91_gpio = irq_data_get_irq_chip_data(d);
void __iomem *pio = at91_gpio->regbase;
unsigned mask = 1 << d->hwirq;
unsigned gpio = irqd_to_hwirq(d);
gpiochip_enable_irq(&at91_gpio->chip, gpio);
if (pio)
writel_relaxed(mask, pio + PIO_IER);
@ -1721,12 +1741,15 @@ static int at91_gpio_of_irq_setup(struct platform_device *pdev,
at91_gpio->pioc_hwirq = irqd_to_hwirq(d);
gpio_irqchip->name = "GPIO";
gpio_irqchip->irq_request_resources = gpio_irq_request_resources;
gpio_irqchip->irq_release_resources = gpio_irq_release_resources;
gpio_irqchip->irq_ack = gpio_irq_ack;
gpio_irqchip->irq_disable = gpio_irq_mask;
gpio_irqchip->irq_mask = gpio_irq_mask;
gpio_irqchip->irq_unmask = gpio_irq_unmask;
gpio_irqchip->irq_set_wake = pm_ptr(gpio_irq_set_wake);
gpio_irqchip->irq_set_type = at91_gpio->ops->irq_type;
gpio_irqchip->flags = IRQCHIP_IMMUTABLE;
/* Disable irqs of this PIO controller */
writel_relaxed(~0, at91_gpio->regbase + PIO_IDR);
@ -1737,7 +1760,7 @@ static int at91_gpio_of_irq_setup(struct platform_device *pdev,
* interrupt.
*/
girq = &at91_gpio->chip.irq;
girq->chip = gpio_irqchip;
gpio_irq_chip_set_chip(girq, gpio_irqchip);
girq->default_type = IRQ_TYPE_NONE;
girq->handler = handle_edge_irq;