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authorLinus Walleij <linus.walleij@linaro.org>2020-07-22 12:19:38 +0200
committerLinus Walleij <linus.walleij@linaro.org>2020-07-23 15:08:55 +0200
commitfceb7ab3854b7b8d13d771b9164ef0be546af673 (patch)
tree1be2495fd8463905e7e02e63ba223a0551a8f9c2 /drivers/gpio
parentbde8c0e64c78633612aaf283692f72bef0bbc549 (diff)
gpio: ws16c48: 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/20200722101938.151265-1-linus.walleij@linaro.org
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpio-ws16c48.c39
1 files changed, 25 insertions, 14 deletions
diff --git a/drivers/gpio/gpio-ws16c48.c b/drivers/gpio/gpio-ws16c48.c
index cb510df2b014..2d89d0529135 100644
--- a/drivers/gpio/gpio-ws16c48.c
+++ b/drivers/gpio/gpio-ws16c48.c
@@ -365,10 +365,25 @@ static const char *ws16c48_names[WS16C48_NGPIO] = {
"Port 5 Bit 4", "Port 5 Bit 5", "Port 5 Bit 6", "Port 5 Bit 7"
};
+static int ws16c48_irq_init_hw(struct gpio_chip *gc)
+{
+ struct ws16c48_gpio *const ws16c48gpio = gpiochip_get_data(gc);
+
+ /* Disable IRQ by default */
+ outb(0x80, ws16c48gpio->base + 7);
+ outb(0, ws16c48gpio->base + 8);
+ outb(0, ws16c48gpio->base + 9);
+ outb(0, ws16c48gpio->base + 10);
+ outb(0xC0, ws16c48gpio->base + 7);
+
+ return 0;
+}
+
static int ws16c48_probe(struct device *dev, unsigned int id)
{
struct ws16c48_gpio *ws16c48gpio;
const char *const name = dev_name(dev);
+ struct gpio_irq_chip *girq;
int err;
ws16c48gpio = devm_kzalloc(dev, sizeof(*ws16c48gpio), GFP_KERNEL);
@@ -396,6 +411,16 @@ static int ws16c48_probe(struct device *dev, unsigned int id)
ws16c48gpio->chip.set_multiple = ws16c48_gpio_set_multiple;
ws16c48gpio->base = base[id];
+ girq = &ws16c48gpio->chip.irq;
+ girq->chip = &ws16c48_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 = ws16c48_irq_init_hw;
+
raw_spin_lock_init(&ws16c48gpio->lock);
err = devm_gpiochip_add_data(dev, &ws16c48gpio->chip, ws16c48gpio);
@@ -404,20 +429,6 @@ static int ws16c48_probe(struct device *dev, unsigned int id)
return err;
}
- /* Disable IRQ by default */
- outb(0x80, base[id] + 7);
- outb(0, base[id] + 8);
- outb(0, base[id] + 9);
- outb(0, base[id] + 10);
- outb(0xC0, base[id] + 7);
-
- err = gpiochip_irqchip_add(&ws16c48gpio->chip, &ws16c48_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], ws16c48_irq_handler, IRQF_SHARED,
name, ws16c48gpio);
if (err) {