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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.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/gpio/pl061.c b/drivers/gpio/pl061.c
index 3ad1eeb49609..105701a1f05b 100644
--- a/drivers/gpio/pl061.c
+++ b/drivers/gpio/pl061.c
@@ -24,6 +24,7 @@
#include <linux/device.h>
#include <linux/amba/bus.h>
#include <linux/amba/pl061.h>
+#include <linux/slab.h>
#define GPIODIR 0x400
#define GPIOIS 0x404
@@ -90,6 +91,12 @@ static int pl061_direction_output(struct gpio_chip *gc, unsigned offset,
gpiodir = readb(chip->base + GPIODIR);
gpiodir |= 1 << offset;
writeb(gpiodir, chip->base + GPIODIR);
+
+ /*
+ * gpio value is set again, because pl061 doesn't allow to set value of
+ * a gpio pin before configuring it in OUT mode.
+ */
+ writeb(!!value << offset, chip->base + (1 << (offset + 2)));
spin_unlock_irqrestore(&chip->lock, flags);
return 0;
@@ -182,7 +189,7 @@ static int pl061_irq_type(unsigned irq, unsigned trigger)
gpioibe &= ~(1 << offset);
if (trigger & IRQ_TYPE_EDGE_RISING)
gpioiev |= 1 << offset;
- else
+ else if (trigger & IRQ_TYPE_EDGE_FALLING)
gpioiev &= ~(1 << offset);
}
writeb(gpioibe, chip->base + GPIOIBE);
@@ -203,7 +210,7 @@ static struct irq_chip pl061_irqchip = {
static void pl061_irq_handler(unsigned irq, struct irq_desc *desc)
{
- struct list_head *chip_list = get_irq_chip_data(irq);
+ struct list_head *chip_list = get_irq_data(irq);
struct list_head *ptr;
struct pl061_gpio *chip;
@@ -296,9 +303,9 @@ static int __init pl061_probe(struct amba_device *dev, struct amba_id *id)
goto iounmap;
}
INIT_LIST_HEAD(chip_list);
- set_irq_chip_data(irq, chip_list);
+ set_irq_data(irq, chip_list);
} else
- chip_list = get_irq_chip_data(irq);
+ chip_list = get_irq_data(irq);
list_add(&chip->list, chip_list);
for (i = 0; i < PL061_GPIO_NR; i++) {