diff options
Diffstat (limited to 'arch/arm/mach-pxa')
| -rw-r--r-- | arch/arm/mach-pxa/generic.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c index 2263a84844a..1c34946ee16 100644 --- a/arch/arm/mach-pxa/generic.c +++ b/arch/arm/mach-pxa/generic.c @@ -105,6 +105,44 @@ int pxa_gpio_mode(int gpio_mode) EXPORT_SYMBOL(pxa_gpio_mode); +int gpio_direction_input(unsigned gpio) +{ + unsigned long flags; + u32 mask; + + if (gpio > pxa_last_gpio) + return -EINVAL; + + mask = GPIO_bit(gpio); + local_irq_save(flags); + GPDR(gpio) &= ~mask; + local_irq_restore(flags); + + return 0; +} +EXPORT_SYMBOL(gpio_direction_input); + +int gpio_direction_output(unsigned gpio, int value) +{ + unsigned long flags; + u32 mask; + + if (gpio > pxa_last_gpio) + return -EINVAL; + + mask = GPIO_bit(gpio); + local_irq_save(flags); + if (value) + GPSR(gpio) = mask; + else + GPCR(gpio) = mask; + GPDR(gpio) |= mask; + local_irq_restore(flags); + + return 0; +} +EXPORT_SYMBOL(gpio_direction_output); + /* * Return GPIO level */ |