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-rw-r--r--drivers/gpio/mx31_gpio.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpio/mx31_gpio.c b/drivers/gpio/mx31_gpio.c
index 737aafa..b07f038 100644
--- a/drivers/gpio/mx31_gpio.c
+++ b/drivers/gpio/mx31_gpio.c
@@ -71,3 +71,18 @@ void mx31_gpio_set(unsigned int gpio, unsigned int value)
l &= ~(1 << gpio);
__REG(gpio_ports[port] + GPIO_DR) = l;
}
+
+int mx31_gpio_get(unsigned int gpio)
+{
+ unsigned int port = gpio >> 5;
+ u32 l;
+
+ if (port >= ARRAY_SIZE(gpio_ports))
+ return -1;
+
+ gpio &= 0x1f;
+
+ l = (__REG(gpio_ports[port] + GPIO_DR) >> gpio) & 0x01;
+
+ return l;
+}