diff options
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/pl061.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpio/pl061.c b/drivers/gpio/pl061.c index cc3b5e0b595..2196f318114 100644 --- a/drivers/gpio/pl061.c +++ b/drivers/gpio/pl061.c @@ -91,6 +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; |