davinci: Macro to convert GPIO signal to GPIO pin number

Adds a macro to convert the GPIO signal passed as bank number
and signal to GPIO pin number.

Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/arm/mach-davinci/include/mach/gpio.h b/arch/arm/mach-davinci/include/mach/gpio.h
index 4f032b38cd6e..f3b8ef878158 100644
--- a/arch/arm/mach-davinci/include/mach/gpio.h
+++ b/arch/arm/mach-davinci/include/mach/gpio.h
@@ -42,6 +42,9 @@
  */
 #define GPIO(X)         (X)             /* 0 <= X <= (DAVINCI_N_GPIO - 1) */
 
+/* Convert GPIO signal to GPIO pin number */
+#define GPIO_TO_PIN(bank, gpio) (16 * (bank) + (gpio))
+
 struct gpio_controller {
         u32     dir;
         u32     out_data;