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gpio: stmpe: Convert to immutable irq_chip 

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

Cc: Marc Zyngier <maz@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
This commit is contained in:
Linus Walleij 2023-03-20 10:55:10 +01:00 committed by Bartosz Golaszewski
parent 5ff8240e47
commit 32585b565f
1 changed files with 6 additions and 2 deletions
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8
drivers/gpio/gpio-stmpe.c
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@ -234,6 +234,7 @@ static void stmpe_gpio_irq_mask(struct irq_data *d)
int mask = BIT(offset % 8);
stmpe_gpio->regs[REG_IE][regoffset] &= ~mask;
gpiochip_disable_irq(gc, offset);
}
static void stmpe_gpio_irq_unmask(struct irq_data *d)
@ -244,6 +245,7 @@ static void stmpe_gpio_irq_unmask(struct irq_data *d)
int regoffset = offset / 8;
int mask = BIT(offset % 8);
gpiochip_enable_irq(gc, offset);
stmpe_gpio->regs[REG_IE][regoffset] |= mask;
}
@ -357,13 +359,15 @@ static void stmpe_dbg_show(struct seq_file *s, struct gpio_chip *gc)
}
}
static struct irq_chip stmpe_gpio_irq_chip = {
static const struct irq_chip stmpe_gpio_irq_chip = {
.name = "stmpe-gpio",
.irq_bus_lock = stmpe_gpio_irq_lock,
.irq_bus_sync_unlock = stmpe_gpio_irq_sync_unlock,
.irq_mask = stmpe_gpio_irq_mask,
.irq_unmask = stmpe_gpio_irq_unmask,
.irq_set_type = stmpe_gpio_irq_set_type,
.flags = IRQCHIP_IMMUTABLE,
GPIOCHIP_IRQ_RESOURCE_HELPERS,
};
#define MAX_GPIOS 24
@ -511,7 +515,7 @@ static int stmpe_gpio_probe(struct platform_device *pdev)
}
girq = &stmpe_gpio->chip.irq;
girq->chip = &stmpe_gpio_irq_chip;
gpio_irq_chip_set_chip(girq, &stmpe_gpio_irq_chip);
/* This will let us handle the parent IRQ in the driver */
girq->parent_handler = NULL;
girq->num_parents = 0;