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path: root/drivers/gpio/pl061.c
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Diffstat (limited to 'drivers/gpio/pl061.c')
-rw-r--r--drivers/gpio/pl061.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/gpio/pl061.c b/drivers/gpio/pl061.c
index 80e483986699..4ee4c8367a3f 100644
--- a/drivers/gpio/pl061.c
+++ b/drivers/gpio/pl061.c
@@ -109,6 +109,16 @@ static void pl061_set_value(struct gpio_chip *gc, unsigned offset, int value)
writeb(!!value << offset, chip->base + (1 << (offset + 2)));
}
+static int pl061_to_irq(struct gpio_chip *gc, unsigned offset)
+{
+ struct pl061_gpio *chip = container_of(gc, struct pl061_gpio, gc);
+
+ if (chip->irq_base == (unsigned) -1)
+ return -EINVAL;
+
+ return chip->irq_base + offset;
+}
+
/*
* PL061 GPIO IRQ
*/
@@ -200,7 +210,7 @@ static void pl061_irq_handler(unsigned irq, struct irq_desc *desc)
desc->chip->ack(irq);
list_for_each(ptr, chip_list) {
unsigned long pending;
- int gpio;
+ int offset;
chip = list_entry(ptr, struct pl061_gpio, list);
pending = readb(chip->base + GPIOMIS);
@@ -209,8 +219,8 @@ static void pl061_irq_handler(unsigned irq, struct irq_desc *desc)
if (pending == 0)
continue;
- for_each_bit(gpio, &pending, PL061_GPIO_NR)
- generic_handle_irq(gpio_to_irq(gpio));
+ for_each_bit(offset, &pending, PL061_GPIO_NR)
+ generic_handle_irq(pl061_to_irq(&chip->gc, offset));
}
desc->chip->unmask(irq);
}
@@ -251,6 +261,7 @@ static int __init pl061_probe(struct amba_device *dev, struct amba_id *id)
chip->gc.direction_output = pl061_direction_output;
chip->gc.get = pl061_get_value;
chip->gc.set = pl061_set_value;
+ chip->gc.to_irq = pl061_to_irq;
chip->gc.base = pdata->gpio_base;
chip->gc.ngpio = PL061_GPIO_NR;
chip->gc.label = dev_name(&dev->dev);