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Diffstat (limited to 'arch/arm/plat-mxc/include/mach/gpio.h')
-rw-r--r--arch/arm/plat-mxc/include/mach/gpio.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/plat-mxc/include/mach/gpio.h b/arch/arm/plat-mxc/include/mach/gpio.h
index af33b74f569e..0044e2f1bea8 100644
--- a/arch/arm/plat-mxc/include/mach/gpio.h
+++ b/arch/arm/plat-mxc/include/mach/gpio.h
@@ -23,6 +23,11 @@
#include <mach/hardware.h>
#include <asm-generic/gpio.h>
+
+/* There's a off-by-one betweem the gpio bank number and the gpiochip */
+/* range e.g. GPIO_1_5 is gpio 5 under linux */
+#define IMX_GPIO_NR(bank, nr) (((bank) - 1) * 32 + (nr))
+
/* use gpiolib dispatchers */
#define gpio_get_value __gpio_get_value
#define gpio_set_value __gpio_set_value
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