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gpio: pci-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/20200722110649.202223-1-linus.walleij@linaro.org
This commit is contained in:
Linus Walleij 2020-07-22 13:06:49 +02:00
parent 866e863edb
commit 4530a840e7
1 changed files with 22 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/gpio/gpio-pci-idio-16.c
View File

@ -280,6 +280,17 @@ static const char *idio_16_names[IDIO_16_NGPIO] = {
"IIN8", "IIN9", "IIN10", "IIN11", "IIN12", "IIN13", "IIN14", "IIN15" "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 and clear any pending interrupt */
iowrite8(0, &idio16gpio->reg->irq_ctl);
iowrite8(0, &idio16gpio->reg->in0_7);
return 0;
}
static int idio_16_probe(struct pci_dev *pdev, const struct pci_device_id *id) static int idio_16_probe(struct pci_dev *pdev, const struct pci_device_id *id)
{ {
struct device *const dev = &pdev->dev; struct device *const dev = &pdev->dev;
@ -287,6 +298,7 @@ static int idio_16_probe(struct pci_dev *pdev, const struct pci_device_id *id)
int err; int err;
const size_t pci_bar_index = 2; const size_t pci_bar_index = 2;
const char *const name = pci_name(pdev); const char *const name = pci_name(pdev);
struct gpio_irq_chip *girq;
idio16gpio = devm_kzalloc(dev, sizeof(*idio16gpio), GFP_KERNEL); idio16gpio = devm_kzalloc(dev, sizeof(*idio16gpio), GFP_KERNEL);
if (!idio16gpio) if (!idio16gpio)
@ -323,6 +335,16 @@ static int idio_16_probe(struct pci_dev *pdev, const struct pci_device_id *id)
idio16gpio->chip.set = idio_16_gpio_set; idio16gpio->chip.set = idio_16_gpio_set;
idio16gpio->chip.set_multiple = idio_16_gpio_set_multiple; idio16gpio->chip.set_multiple = idio_16_gpio_set_multiple;
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); raw_spin_lock_init(&idio16gpio->lock);
err = devm_gpiochip_add_data(dev, &idio16gpio->chip, idio16gpio); err = devm_gpiochip_add_data(dev, &idio16gpio->chip, idio16gpio);
@ -331,17 +353,6 @@ static int idio_16_probe(struct pci_dev *pdev, const struct pci_device_id *id)
return err; return err;
} }
/* Disable IRQ by default and clear any pending interrupt */
iowrite8(0, &idio16gpio->reg->irq_ctl);
iowrite8(0, &idio16gpio->reg->in0_7);
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, pdev->irq, idio_16_irq_handler, IRQF_SHARED, err = devm_request_irq(dev, pdev->irq, idio_16_irq_handler, IRQF_SHARED,
name, idio16gpio); name, idio16gpio);
if (err) { if (err) {