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gpio: rcar: Make the irqchip immutable

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Commit 6c846d026d ("gpio: Don't fiddle with irqchips marked as
immutable") added a warning to indicate if the gpiolib is altering the
internals of irqchips.  Following this change the following warning is
now observed for the gpio-rcar driver:

    gpio gpiochip0: (e6050000.gpio): not an immutable chip, please consider fixing it!

Fix this by making the irqchip in the gpio-rcar driver immutable.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
This commit is contained in:
Geert Uytterhoeven 2022-05-20 12:18:56 +02:00 committed by Bartosz Golaszewski
parent 61550be779
commit 718b972d32
1 changed files with 18 additions and 13 deletions
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31
drivers/gpio/gpio-rcar.c
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@ -44,7 +44,6 @@ struct gpio_rcar_priv {
spinlock_t lock;
struct device *dev;
struct gpio_chip gpio_chip;
struct irq_chip irq_chip;
unsigned int irq_parent;
atomic_t wakeup_path;
struct gpio_rcar_info info;
@ -96,16 +95,20 @@ static void gpio_rcar_irq_disable(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
struct gpio_rcar_priv *p = gpiochip_get_data(gc);
irq_hw_number_t hwirq = irqd_to_hwirq(d);
gpio_rcar_write(p, INTMSK, ~BIT(irqd_to_hwirq(d)));
gpio_rcar_write(p, INTMSK, ~BIT(hwirq));
gpiochip_disable_irq(gc, hwirq);
}
static void gpio_rcar_irq_enable(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
struct gpio_rcar_priv *p = gpiochip_get_data(gc);
irq_hw_number_t hwirq = irqd_to_hwirq(d);
gpio_rcar_write(p, MSKCLR, BIT(irqd_to_hwirq(d)));
gpiochip_enable_irq(gc, hwirq);
gpio_rcar_write(p, MSKCLR, BIT(hwirq));
}
static void gpio_rcar_config_interrupt_input_mode(struct gpio_rcar_priv *p,
@ -203,6 +206,17 @@ static int gpio_rcar_irq_set_wake(struct irq_data *d, unsigned int on)
return 0;
}
static const struct irq_chip gpio_rcar_irq_chip = {
.name = "gpio-rcar",
.irq_mask = gpio_rcar_irq_disable,
.irq_unmask = gpio_rcar_irq_enable,
.irq_set_type = gpio_rcar_irq_set_type,
.irq_set_wake = gpio_rcar_irq_set_wake,
.flags = IRQCHIP_IMMUTABLE | IRQCHIP_SET_TYPE_MASKED |
IRQCHIP_MASK_ON_SUSPEND,
GPIOCHIP_IRQ_RESOURCE_HELPERS,
};
static irqreturn_t gpio_rcar_irq_handler(int irq, void *dev_id)
{
struct gpio_rcar_priv *p = dev_id;
@ -481,7 +495,6 @@ static int gpio_rcar_probe(struct platform_device *pdev)
{
struct gpio_rcar_priv *p;
struct gpio_chip *gpio_chip;
struct irq_chip *irq_chip;
struct gpio_irq_chip *girq;
struct device *dev = &pdev->dev;
const char *name = dev_name(dev);
@ -531,16 +544,8 @@ static int gpio_rcar_probe(struct platform_device *pdev)
gpio_chip->base = -1;
gpio_chip->ngpio = npins;
irq_chip = &p->irq_chip;
irq_chip->name = "gpio-rcar";
irq_chip->irq_mask = gpio_rcar_irq_disable;
irq_chip->irq_unmask = gpio_rcar_irq_enable;
irq_chip->irq_set_type = gpio_rcar_irq_set_type;
irq_chip->irq_set_wake = gpio_rcar_irq_set_wake;
irq_chip->flags = IRQCHIP_SET_TYPE_MASKED | IRQCHIP_MASK_ON_SUSPEND;
girq = &gpio_chip->irq;
girq->chip = irq_chip;
gpio_irq_chip_set_chip(girq, &gpio_rcar_irq_chip);
/* This will let us handle the parent IRQ in the driver */
girq->parent_handler = NULL;
girq->num_parents = 0;