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gpio: 104-idio-16: Use irqchip template

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This makes the driver use the irqchip template to assign
properties to the gpio_irq_chip instead of using the
explicit call to gpiochip_irqchip_add().

The irqchip is instead added while adding the gpiochip.
Also move the IRQ initialization to the special .init_hw()
callback.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Cc: William Breathitt Gray <vilhelm.gray@gmail.com>
Link: https://lore.kernel.org/r/20200722105517.186137-1-linus.walleij@linaro.org
This commit is contained in:
Linus Walleij 2020-07-22 12:55:17 +02:00
parent 44b01cf5d2
commit 82e4613d3d
1 changed files with 22 additions and 11 deletions
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33
drivers/gpio/gpio-104-idio-16.c
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@ -224,10 +224,22 @@ static const char *idio_16_names[IDIO_16_NGPIO] = {
"IIN8", "IIN9", "IIN10", "IIN11", "IIN12", "IIN13", "IIN14", "IIN15"
};
static int idio_16_irq_init_hw(struct gpio_chip *gc)
{
struct idio_16_gpio *const idio16gpio = gpiochip_get_data(gc);
/* Disable IRQ by default */
outb(0, idio16gpio->base + 2);
outb(0, idio16gpio->base + 1);
return 0;
}
static int idio_16_probe(struct device *dev, unsigned int id)
{
struct idio_16_gpio *idio16gpio;
const char *const name = dev_name(dev);
struct gpio_irq_chip *girq;
int err;
idio16gpio = devm_kzalloc(dev, sizeof(*idio16gpio), GFP_KERNEL);
@ -256,6 +268,16 @@ static int idio_16_probe(struct device *dev, unsigned int id)
idio16gpio->base = base[id];
idio16gpio->out_state = 0xFFFF;
girq = &idio16gpio->chip.irq;
girq->chip = &idio_16_irqchip;
/* This will let us handle the parent IRQ in the driver */
girq->parent_handler = NULL;
girq->num_parents = 0;
girq->parents = NULL;
girq->default_type = IRQ_TYPE_NONE;
girq->handler = handle_edge_irq;
girq->init_hw = idio_16_irq_init_hw;
raw_spin_lock_init(&idio16gpio->lock);
err = devm_gpiochip_add_data(dev, &idio16gpio->chip, idio16gpio);
@ -264,17 +286,6 @@ static int idio_16_probe(struct device *dev, unsigned int id)
return err;
}
/* Disable IRQ by default */
outb(0, base[id] + 2);
outb(0, base[id] + 1);
err = gpiochip_irqchip_add(&idio16gpio->chip, &idio_16_irqchip, 0,
handle_edge_irq, IRQ_TYPE_NONE);
if (err) {
dev_err(dev, "Could not add irqchip (%d)\n", err);
return err;
}
err = devm_request_irq(dev, irq[id], idio_16_irq_handler, 0, name,
idio16gpio);
if (err) {