1 files changed, 10 insertions, 13 deletions

diff --git a/arch/arm/mach-davinci/include/mach/gpio.h b/arch/arm/mach-davinci/include/mach/gpio.h
index 5e7c36b202f1..efe3281364e6 100644
--- a/arch/arm/mach-davinci/include/mach/gpio.h
+++ b/arch/arm/mach-davinci/include/mach/gpio.h
@@ -28,23 +28,18 @@
  * go through boot loaders.
  *
  * the gpio clock will be turned on when gpios are used, and you may also
- * need to pay attention to PINMUX0 and PINMUX1 to be sure those pins are
+ * need to pay attention to PINMUX registers to be sure those pins are
  * used as gpios, not with other peripherals.
  *
  * On-chip GPIOs are numbered 0..(DAVINCI_N_GPIO-1).  For documentation,
- * and maybe for later updates, code should write GPIO(N) or:
- *  - GPIOV18(N) for 1.8V pins, N in 0..53; same as GPIO(0)..GPIO(53)
- *  - GPIOV33(N) for 3.3V pins, N in 0..17; same as GPIO(54)..GPIO(70)
- *
- * For GPIO IRQs use gpio_to_irq(GPIO(N)) or gpio_to_irq(GPIOV33(N)) etc
- * for now, that's != GPIO(N)
+ * and maybe for later updates, code may write GPIO(N).  These may be
+ * all 1.8V signals, all 3.3V ones, or a mix of the two.  A given chip
+ * may not support all the GPIOs in that range.
  *
  * GPIOs can also be on external chips, numbered after the ones built-in
  * to the DaVinci chip.  For now, they won't be usable as IRQ sources.
  */
-#define GPIO(X)         (X)             /* 0 <= X <= 70 */
-#define GPIOV18(X)      (X)             /* 1.8V i/o; 0 <= X <= 53 */
-#define GPIOV33(X)      ((X)+54)        /* 3.3V i/o; 0 <= X <= 17 */
+#define GPIO(X)         (X)             /* 0 <= X <= (DAVINCI_N_GPIO - 1) */
 
 struct gpio_controller {
         u32     dir;
@@ -73,12 +68,14 @@ __gpio_to_controller(unsigned gpio)
 {
         void *__iomem ptr;
 
-        if (gpio < 32)
+        if (gpio < 32 * 1)
                 ptr = IO_ADDRESS(DAVINCI_GPIO_BASE + 0x10);
-        else if (gpio < 64)
+        else if (gpio < 32 * 2)
                 ptr = IO_ADDRESS(DAVINCI_GPIO_BASE + 0x38);
-        else if (gpio < DAVINCI_N_GPIO)
+        else if (gpio < 32 * 3)
                 ptr = IO_ADDRESS(DAVINCI_GPIO_BASE + 0x60);
+        else if (gpio < 32 * 4)
+                ptr = IO_ADDRESS(DAVINCI_GPIO_BASE + 0x88);
         else
                 ptr = NULL;
         return ptr;