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authorLinus Walleij <linus.walleij@linaro.org>2020-07-22 13:06:49 +0200
committerLinus Walleij <linus.walleij@linaro.org>2020-07-23 15:11:26 +0200
commit4530a840e74eface949dc4255b66ad640c0521b9 (patch)
treeeb0a0060b9fd8a9436b5b1d27f609c38635eb6c9 /drivers/gpio/gpio-pci-idio-16.c
parentgpio: pcie-idio-24: Use irqchip template (diff)
downloadlinux-4530a840e74eface949dc4255b66ad640c0521b9.tar.xz
linux-4530a840e74eface949dc4255b66ad640c0521b9.zip
gpio: pci-idio-16: Use irqchip template
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
Diffstat (limited to 'drivers/gpio/gpio-pci-idio-16.c')
-rw-r--r--drivers/gpio/gpio-pci-idio-16.c33
1 files changed, 22 insertions, 11 deletions
diff --git a/drivers/gpio/gpio-pci-idio-16.c b/drivers/gpio/gpio-pci-idio-16.c
index 638d6656ce73..9acec76e0b51 100644
--- a/drivers/gpio/gpio-pci-idio-16.c
+++ b/drivers/gpio/gpio-pci-idio-16.c
@@ -280,6 +280,17 @@ 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 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)
{
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;
const size_t pci_bar_index = 2;
const char *const name = pci_name(pdev);
+ struct gpio_irq_chip *girq;
idio16gpio = devm_kzalloc(dev, sizeof(*idio16gpio), GFP_KERNEL);
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_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);
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;
}
- /* 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,
name, idio16gpio);
if (err) {