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>

diff --git a/arch/arm/mach-davinci/include/mach/gpio.h b/arch/arm/mach-davinci/include/mach/gpio.h
index 4f032b38cd6ed874762af30a772db54d7bbeb8fd..f3b8ef878158f2e9d144ab34fb464a64d46cc68a 100644 (file)
--- 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;