[PATCH] gpio_direction_output() needs an initial value

[firefly-linux-kernel-4.4.55.git] / arch / arm / mach-sa1100 / generic.c

diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c
index e510295c2580d89591eee0b4675f8d401f966540..edc349e5fcf71eed240875491c657f84472f2793 100644 (file)
--- a/arch/arm/mach-sa1100/generic.c
+++ b/arch/arm/mach-sa1100/generic.c
@@ -138,6 +138,37 @@ unsigned long long sched_clock(void)
        return v;
 }
 
+int gpio_direction_input(unsigned gpio)
+{
+       unsigned long flags;
+
+       if (gpio > GPIO_MAX)
+               return -EINVAL;
+
+       local_irq_save(flags);
+       GPDR &= ~GPIO_GPIO(gpio);
+       local_irq_restore(flags);
+       return 0;
+}
+
+EXPORT_SYMBOL(gpio_direction_input);
+
+int gpio_direction_output(unsigned gpio, int value)
+{
+       unsigned long flags;
+
+       if (gpio > GPIO_MAX)
+               return -EINVAL;
+
+       local_irq_save(flags);
+       gpio_set_value(gpio, value);
+       GPDR |= GPIO_GPIO(gpio);
+       local_irq_restore(flags);
+       return 0;
+}
+
+EXPORT_SYMBOL(gpio_direction_output);
+
 /*
  * Default power-off for SA1100
  */